US20150085417A1 - Electrical energy saving system - Google Patents
Electrical energy saving system Download PDFInfo
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- US20150085417A1 US20150085417A1 US14/559,328 US201414559328A US2015085417A1 US 20150085417 A1 US20150085417 A1 US 20150085417A1 US 201414559328 A US201414559328 A US 201414559328A US 2015085417 A1 US2015085417 A1 US 2015085417A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Definitions
- Embodiments of the present invention solve the above-mentioned problems and provide a distinct advance in the art of supplying alternating current (AC) electric power to a load. More particularly, embodiments of the invention provide methods and systems that condition the power supplied to a load from an AC electric power supply in order to save electrical energy.
- AC alternating current
- the first set surge arresters 24 may include two surge arresters 24 a, 24 b, as depicted in FIG. 1 .
- the surge arresters 24 a, 24 b may include surge suppressors or lightning arresters or other devices that operate on the general principle of presenting an open circuit or high impedance between two ports when the voltage between the two ports is less than or equal to a given value and presenting a short circuit or low impedance between the two ports when the voltage therebetween exceeds the given value.
- one of the ports may be coupled to one of the phases 16 , 18 , 20 and the other port may be coupled to the neutral line.
- the surge arresters 24 a, 24 b may be generally passive elements and may include such components as metal-oxide varistors or the like.
- surge arresters 24 a, 24 b of different current ratings may be included in some embodiments, it may be possible to include surge arresters 24 a, 24 b of different current ratings as long as the sum of the current ratings for all the surge arresters 24 a, 24 b, etc. is equal to or greater than the total current drawn by the load 12 .
- the surge arrester 24 a may be oriented in the system 10 such that the first port 36 a is coupled to the first phase 16 , the second port 36 b is coupled to the second phase 18 , and the ground port 36 c is coupled to the neutral line 22 .
- the surge arrester 24 b may be oriented in the system 10 such that the first port 36 d is coupled to the first phase 16 , the second port 36 e is coupled to the second phase 18 , and the ground port 36 f is coupled to the neutral line 22 .
- the third set of surge arresters 28 may also include two surge arresters 28 a, 28 b, which may function substantially the same way as the surge arresters 24 a , 24 b described above.
- the surge arrester 28 a may include a first port 40 a, a second port 40 b, and a ground port 40 c.
- the surge arrester 28 b may include a first port 40 d, a second port 40 e, and a ground port 40 f.
- the surge arrester 28 a may be oriented in the system 10 such that the first port 40 a is coupled to the second phase 18 , the second port 40 b is coupled to the third phase 20 , and the ground port 40 c is coupled to the neutral line 22 .
- the surge arrester 28 b may be oriented in the system 10 such that the first port 40 d is coupled to the second phase 18 , the second port 40 e is coupled to the third phase 20 , and the ground port 40 f is coupled to the neutral line 22 .
- the three-phase surge suppressor 30 may present a low impedance between the second port 44 and the ground port 48 if the voltage therebetween exceeds a rated value, and may present a low impedance between the third port 46 and the ground port 48 if the voltage therebetween exceeds a rated value.
- the three-phase surge suppressor 30 may be oriented in the system 10 such that the first port 42 is coupled to the first phase 16 , the second port 44 is coupled to the second phase 18 , the third port 46 is coupled to the third phase 20 , and the ground port 48 is coupled to the neutral line 22 .
- the plurality of capacitors 32 generally maintains the voltage level of any of the first phase 16 , the second phase 18 , or the third phase 20 with respect to one another whenever the load 12 changes, such as whenever a load is added as may occur during the starting of an electric motor.
- the plurality of capacitors 32 may also serve to correct the power factor by reducing the reactive power consumed by highly inductive loads such as electric motors.
- the plurality of capacitors 32 may include many types of capacitors such as electrolytic or polypropylene dielectric capacitors.
- the plurality of capacitors 32 may include at least a first capacitor 50 , a second capacitor 52 , and a third capacitor 54 .
- the three capacitors may be substantially similar.
- the first capacitor 50 , the second capacitor 52 , and the third capacitor 54 may include one or more physical capacitors coupled in parallel. Examples of the first capacitor 50 , the second capacitor 52 , and the third capacitor 54 may include the HID 4446-P 280 VAC, 28 microfarad capacitor from Aerovox Corporation of New Bedford, Mass.
- the surge arresters 112 a, 112 b may have an electric current rating which may be used to determine the number of surge arresters 112 a, 112 b, etc. included in the first set of surge arresters 112 . For example, if the surge arresters 112 a, 112 b has a current rating of 10 A and the total amount of current drawn by the load 104 is 50 A, then the first set of surge arresters 112 may include five surge arresters 112 a, 112 b, etc.
- the system 100 may further include a second set of surge arresters 118 , including surge arresters 118 a, 118 b, that are substantially similar to the surge arresters 112 .
- the surge arrester 116 a includes a first port 136 a coupled to the second phase 108 , a second port 136 b coupled to the first phase 106 , and a ground port 136 c coupled to the neutral line 110 .
- the surge arrester 118 b includes a first port 136 d coupled to the second phase 108 , a second port 136 e coupled to the first phase 106 , and a ground port 136 f coupled to the neutral line 110 .
- the single-phase surge suppressor 114 may include surge suppressors, surge protectors, surge arresters, combinations thereof, and the like.
- the single-phase surge suppressor 114 may be a generally passive element and may include such components as metal-oxide varistors or the like.
- the single-phase surge suppressor 114 may include a first port 120 , a second port 122 , and a ground port 124 .
- the single-phase surge suppressor 114 may provide a low impedance to the ground port 124 if the voltage between the first port 120 and the second port 122 exceeds a rated value, or if the voltage between either port 120 , 122 and the ground port 124 exceeds a rated value.
- the single-phase surge suppressor 114 may be oriented in the system 100 such that the first port 120 is coupled to the first phase 106 , the second port 122 is coupled to the second phase 108 , and the ground port 124 is coupled to the neutral line 110 .
- FIG. 3 To illustrate the performance of the system 100 , applicant implemented the system 100 at a residence and measured various power parameters both with the system 100 operating and with the system 100 not operating. The results of the measurement are shown in FIG. 3 .
- the real power, the apparent power, the reactive power, and the power factor were measured in the vicinity of the system 100 at regular intervals on a particular day.
- a first plot 300 shows the real power measured in kiloWatts (kW) vs. the time of day (in military time).
- a second plot 302 shows the apparent power measured in kiloVoltAmps (kVA) vs. time of day.
- a third plot 304 shows the reactive power measured in kiloVoltAmps Reactive (kVAR) vs. time of day.
- a fourth plot 306 shows the power factor (in a range from approximately zero to approximately one) vs. time of day.
- the system 100 was in operation.
- the magnitudes of the real power and the apparent power reflected the activity of various loads 104 .
- the reactive power averaged approximately 0 kVAR and the power factor averaged approximately 1.
- the system 100 was decoupled from the electric power supply 102 and the load 104 .
- the magnitudes of the real power and the apparent power increased.
- the magnitude of the reactive power increased in the negative direction, and the power factor averaged at a value less than 1.
- the load 104 consumed greater real power, apparent power, and reactive power.
- the power factor reduced to less than 1.
Abstract
A system for conditioning the three-phase alternating current electric power, including a first phase, a second phase, a third phase, and a neutral line, supplied to a load includes a plurality of first surge arresters, a plurality of second surge arresters, a plurality of third surge arresters, a three-phase surge suppressor, and a plurality of capacitors. The surge arresters minimize the amount by which the voltage between two phases and the neutral line exceeds a rated value. The three-phase surge suppressor minimizes the amount by which the voltage between the three phases and the neutral line exceeds a rated value. The capacitors minimize the amount by which the voltage between two phases falls below a rated value.
Description
- The current patent application is a continuation patent application which claims priority benefit, with regard to all common subject matter, of earlier-filed U.S. patent application titled “ELECTRICAL ENERGY SAVING SYSTEM”, Ser. No. 12/579,030, filed Oct. 14, 2009. The identified earlier-filed application is hereby incorporated by reference in its entirety into the present application.
- 1. Field of the Invention
- Embodiments of the present invention relate to methods and systems for supplying alternating current (AC) electric power to a load. More particularly, embodiments of the present invention relate to methods and systems that condition the power supplied to a load from an AC electric power supply in order to save electrical energy.
- 2. Description of the Related Art
- AC electric power supplied from a utility company may include transient spikes or surges in the line voltage, wherein the voltage level is greater than it should be, as a result of lightning or electrical storm activity or various other phenomena. In addition, the line voltage may experience droops or sags, wherein the voltage level is less than it should be, as a result of increased loading of the power supply. These variations in the level of the voltage supplied to a load may lead to additional wear on devices connected to the power supply and increased electrical energy consumed in the form of additional heat produced in the electrical system wiring and additional start-up current load.
- Embodiments of the present invention solve the above-mentioned problems and provide a distinct advance in the art of supplying alternating current (AC) electric power to a load. More particularly, embodiments of the invention provide methods and systems that condition the power supplied to a load from an AC electric power supply in order to save electrical energy.
- One embodiment of the invention is a system for conditioning the three phase alternating current electric power, including a first phase, a second phase, a third phase, and a neutral line, supplied to a load. The system broadly comprises a plurality of first surge arresters, a plurality of second surge arresters, a plurality of third surge arresters, a three-phase surge suppressor, and a plurality of capacitors. The first surge arresters may be coupled to the first phase, the second phase, and the neutral line and may minimize the amount by which the voltage between two phases and the neutral line exceeds a rated value. The second surge arresters may be coupled to the second phase, the third phase, and the neutral line and may minimize the amount by which the voltage between two phases and the neutral line exceeds the rated value. The third surge arresters may be coupled to the first phase, the third phase, and the neutral line and may minimize the amount by which the voltage between two phases and the neutral line exceeds the rated value. The three phase surge suppressor may be coupled to the first phase, the second phase, the third phase, and the neutral line and may minimize the amount by which the voltage between the three phases and the neutral line exceeds the rated value. The capacitors may include a first capacitor coupled to the first phase and the second phase, a second capacitor coupled to the second phase and the third phase, and a third capacitor coupled to the first phase and the third phase, and may minimize the amount by which the voltage between two phases falls below the rated value.
- Another embodiment of the invention is a system for conditioning a single phase alternating current electric power, including a first phase, a second phase, and a neutral line, supplied to a load. The system broadly comprises a plurality of first surge arresters, a single phase surge suppressor, and a capacitor. The first surge arresters may be coupled to the first phase, the second phase, and the neutral line and configured to minimize the amount by which the voltage between the first phase and the second phase exceeds a rated value by presenting a low impedance to the neutral line when the voltage between the first phase and the second phase exceeds the rated value. The single phase surge suppressor may be coupled to the first phase, the second phase, and the neutral line and configured to minimize the amount by which the voltage between the two phases and the neutral line exceeds a rated value by presenting the low impedance to the neutral line when either the first phase or the second phase exceeds the rated value. The capacitor may be coupled to the first phase and the second phase and configured to minimize the amount by which the voltage between the first phase and the second phase falls below the rated value.
- This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
- Other aspects and advantages of the present invention will be apparent from the following detailed description of the embodiments and the accompanying drawing figures.
- Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:
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FIG. 1 is a block diagram of a system constructed in accordance with at least one embodiment of the present invention for conditioning a three phase alternating current electric power supplied to a load; -
FIG. 2 is a block diagram of a system constructed in accordance with another embodiment of the invention for conditioning a single phase alternating current electric power supplied to a load; and -
FIG. 3 is a graph of four plots of measured parameters of theFIG. 2 embodiment of the system implemented at a residence. - The drawing figures do not limit the present invention to the specific embodiments disclosed and described herein. The drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the invention.
- The following detailed description of the invention references the accompanying drawings that illustrate specific embodiments in which the invention can be practiced. The embodiments are intended to describe aspects of the invention in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments can be utilized and changes can be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense. The scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled.
- A
system 10 constructed in accordance with various embodiments of the present invention for conditioning the power supplied to aload 12 from an alternating current (AC)electric power supply 14 is shown inFIG. 1 . Theelectric power supply 14, in various embodiments, may be a three-phase electric power source and may represent the electric power supplied from a utility company, a generator, or similar source. Theelectric power supply 14 may present afirst phase 16, asecond phase 18, athird phase 20, and aneutral line 22, wherein the angular difference of the voltage between any two phases is 120 degrees, as known to those skilled in the art. Theload 12 may be any commonly implemented load that draws electric power such as motors, compressors, turbines, lighting, heating, combinations thereof, or other industrial, commercial, or residential loads. Theload 12 may be balanced between thefirst phase 16, thesecond phase 18, and thethird phase 20, or theload 12 may be unbalanced. - The
system 10 may broadly comprise a first set ofsurge arresters 24, a second set ofsurge arresters 26, a third set ofsurge arresters 28, a three-phase surge suppressor 30, and a plurality ofcapacitors 32. Thesystem 10 is generally positioned between theelectric power supply 14 and theload 12, and may be utilized with existingelectric power supply 14 structures in an industrial, commercial, or residential setting. Or, thesystem 10 may be integrated into a new residence or other building. In embodiments for usage with a newelectric power supply 14 structure, the components of thesystem 10 may be incorporated in an electric power distribution control panel. In other embodiments for usage with an existing residence or building, thesystem 10 may be enclosed in a housing or insulated box, typically in close proximity to the electric power delivery point, such as a wiring panel, for a facility, building, or residence. The housing may be designed to output four wires that couple with each of thephases neutral line 22 of the existing electric power wiring. - In one embodiment, the first
set surge arresters 24 may include two surge arresters 24 a, 24 b, as depicted inFIG. 1 . The surge arresters 24 a, 24 b may include surge suppressors or lightning arresters or other devices that operate on the general principle of presenting an open circuit or high impedance between two ports when the voltage between the two ports is less than or equal to a given value and presenting a short circuit or low impedance between the two ports when the voltage therebetween exceeds the given value. In various embodiments, one of the ports may be coupled to one of thephases - In various embodiments, the surge arrester 24 a may present a single phase, two-pole, three-wire configuration, and may include a first port 36 a, a second port 36 b, and a ground port 36 c. An example of the surge arrester 24 a may include the AG2401C from Intermatic of Spring Grove, Ill. The two-pole surge arrester 24 a may monitor the voltage between two set of ports independently—between the first port 36 a and the ground port 36 c, and between the second port 36 b and the ground port 36 c. Thus, the surge arrester 24 a may present a low impedance between the first port 36 a and the ground port 36 c if the voltage therebetween exceeds a rated value. Likewise, the surge arrester 24 a may present a low impedance between the second port 36 b and the ground port 36 c if the voltage therebetween exceeds a rated value. The surge arrester 24 a may have an additional mode of operation, wherein the surge arrester 24 a presents a low impedance from either or both of the first port 36 a and the second port 36 b to the ground port 36 c when the voltage between the first port 36 a and the second port 36 b exceeds a rated value. The surge arrester 24 b may be substantially similar to the surge arrester 24 a and may include a first port 36 d, a second port 36 e, and a ground port 36 f.
- The surge arrester 24 a may further include an electric current rating which corresponds to the rated amount of current that can be handled by the surge arrester 24 a. Thus, the number of surge arresters 24 a, 24 b, etc. included in the plurality of
first surge arresters 24 is related to the total amount of current theload 12 is expected to draw divided by the current rating of each surge arrester 24 a, 24 b. For example, if the total current drawn by theload 12 is 200 amperes (A) and each surge arrester 24 a, 24 b is rated for 40 A, then there may be 200A/40A=5 surge arresters 24 a, 24 b, etc. included in the plurality offirst surge arresters 24. In some embodiments, it may be possible to include surge arresters 24 a, 24 b of different current ratings as long as the sum of the current ratings for all the surge arresters 24 a, 24 b, etc. is equal to or greater than the total current drawn by theload 12. - The surge arrester 24 a may be oriented in the
system 10 such that the first port 36 a is coupled to thefirst phase 16, the second port 36 b is coupled to thesecond phase 18, and the ground port 36 c is coupled to theneutral line 22. The surge arrester 24 b may be oriented in thesystem 10 such that the first port 36 d is coupled to thefirst phase 16, the second port 36 e is coupled to thesecond phase 18, and the ground port 36 f is coupled to theneutral line 22. - The second set of
surge arresters 26 may also include two surge arresters 26 a, 26 b, which may function substantially the same way as the surge arresters 24 a, 24 b described above. The surge arrester 26 a may include a first port 38 a, a second port 38 b, and a ground port 38 c. The surge arrester 26 b may include a first port 38 d, a second port 38 e, and a ground port 38 f. The surge arrester 26 a may be oriented in thesystem 10 such that the first port 38 a is coupled to thesecond phase 18, the second port 38 b is coupled to thethird phase 20, and the ground port 38 c is coupled to theneutral line 22. The surge arrester 26 b may be oriented in thesystem 10 such that the first port 38 d is coupled to thesecond phase 18, the second port 38 e is coupled to thethird phase 20, and the ground port 38 f is coupled to theneutral line 22. - The third set of
surge arresters 28 may also include two surge arresters 28 a, 28 b, which may function substantially the same way as the surge arresters 24 a, 24 b described above. The surge arrester 28 a may include a first port 40 a, a second port 40 b, and a ground port 40 c. The surge arrester 28 b may include a first port 40 d, a second port 40 e, and a ground port 40 f. The surge arrester 28 a may be oriented in thesystem 10 such that the first port 40 a is coupled to thesecond phase 18, the second port 40 b is coupled to thethird phase 20, and the ground port 40 c is coupled to theneutral line 22. The surge arrester 28 b may be oriented in thesystem 10 such that the first port 40 d is coupled to thesecond phase 18, the second port 40 e is coupled to thethird phase 20, and the ground port 40 f is coupled to theneutral line 22. - The three-
phase surge suppressor 30 may include surge suppressors, surge protectors, surge arresters, combinations thereof, and the like. The three-phase surge suppressor 30 may be a generally passive element and may include such components as metal-oxide varistors or the like. The three-phase surge suppressor 30 may include afirst port 42, asecond port 44, athird port 46, and aground port 48. An example of the three-phase surge suppressor 30 includes the 120 Volt AC (VAC) transient voltage surge suppressor from Innovative Technology of Moon Township, Pa. In a similar fashion to the surge arrester 34 discussed above, the three-phase surge suppressor 30 may present a low impedance between thefirst port 42 and theground port 48 if the voltage therebetween exceeds a rated value. Likewise, the three-phase surge suppressor 30 may present a low impedance between thesecond port 44 and theground port 48 if the voltage therebetween exceeds a rated value, and may present a low impedance between thethird port 46 and theground port 48 if the voltage therebetween exceeds a rated value. The three-phase surge suppressor 30 may be oriented in thesystem 10 such that thefirst port 42 is coupled to thefirst phase 16, thesecond port 44 is coupled to thesecond phase 18, thethird port 46 is coupled to thethird phase 20, and theground port 48 is coupled to theneutral line 22. - The plurality of
capacitors 32 generally maintains the voltage level of any of thefirst phase 16, thesecond phase 18, or thethird phase 20 with respect to one another whenever theload 12 changes, such as whenever a load is added as may occur during the starting of an electric motor. The plurality ofcapacitors 32 may also serve to correct the power factor by reducing the reactive power consumed by highly inductive loads such as electric motors. The plurality ofcapacitors 32 may include many types of capacitors such as electrolytic or polypropylene dielectric capacitors. - The plurality of
capacitors 32 may include at least afirst capacitor 50, asecond capacitor 52, and athird capacitor 54. In various embodiments, the three capacitors may be substantially similar. Further, thefirst capacitor 50, thesecond capacitor 52, and thethird capacitor 54 may include one or more physical capacitors coupled in parallel. Examples of thefirst capacitor 50, thesecond capacitor 52, and thethird capacitor 54 may include the HID 4446-P 280 VAC, 28 microfarad capacitor from Aerovox Corporation of New Bedford, Mass. -
First capacitor 50 may include a first terminal 56 a coupled to thefirst phase 16 and a second terminal 56 b coupled to thesecond phase 18.Second capacitor 52 may include a first terminal 58 a coupled to thesecond phase 18 and a second terminal 58 b coupled to thethird phase 20.Third capacitor 54 may include a first terminal 60 a coupled to thethird phase 20 and a second terminal 60 b coupled to thefirst phase 16. - A second embodiment of the
system 100 that may be utilized with a single phaseelectric power supply 102 is shown inFIG. 2 . Theelectric power supply 102 may be similar to that which is delivered to a residence or small business wherein 120 VAC is supplied to theload 104. The electric power supply may include afirst phase 106, asecond phase 108, and aneutral line 110.Typical loads 104 may include common household or business items such as small appliances, lighting, entertainment devices, computing devices, combinations thereof, and the like. Similar tosystem 10 described above,system 100 may be enclosed in a housing or insulated box, typically in close proximity to the electric power delivery point for the house or business. Alternatively, the components of thesystem 100 may be incorporated in an electric power distribution control panel. Thesystem 100 may broadly comprise a first set ofsurge arresters 112, a single-phase surge suppressor 114, and a plurality ofcapacitors 116. - The first set of
surge arresters 112 may perform a substantially similar function as thefirst surge arresters 24 described above, wherein the voltage between thefirst phase 106 and thesecond phase 108 is monitored, or the voltage between eitherphase neutral line 110 is monitored. The first set ofsurge arresters 112 may include two surge arresters 112 a, 112 b. The surge arresters 112 a, 112 b may provide a low impedance path to theneutral line 110 if the voltage between thefirst phase 106 and thesecond phase 108 exceeds a rated value, or if the voltage between eitherphase neutral line 110 exceeds a rated value. - Like the surge arresters 24 a, 24 b discussed above, the surge arresters 112 a, 112 b may have an electric current rating which may be used to determine the number of surge arresters 112 a, 112 b, etc. included in the first set of
surge arresters 112. For example, if the surge arresters 112 a, 112 b has a current rating of 10 A and the total amount of current drawn by theload 104 is 50 A, then the first set ofsurge arresters 112 may include five surge arresters 112 a, 112 b, etc. - The surge arrester 112 a includes a first port 134 a coupled to the
first phase 106, a second port 134 b coupled to thesecond phase 108, and a ground port 134 c coupled to theneutral line 110. The surge arrester 112 b includes a first port 134 d coupled to thefirst phase 106, a second port 134 e coupled to thesecond phase 108, and a ground port 134 f coupled to theneutral line 110. - In various embodiments, the
system 100 may further include a second set ofsurge arresters 118, including surge arresters 118 a, 118 b, that are substantially similar to thesurge arresters 112. The surge arrester 116 a includes a first port 136 a coupled to thesecond phase 108, a second port 136 b coupled to thefirst phase 106, and a ground port 136 c coupled to theneutral line 110. The surge arrester 118 b includes a first port 136 d coupled to thesecond phase 108, a second port 136 e coupled to thefirst phase 106, and a ground port 136 f coupled to theneutral line 110. - The single-
phase surge suppressor 114 may include surge suppressors, surge protectors, surge arresters, combinations thereof, and the like. The single-phase surge suppressor 114 may be a generally passive element and may include such components as metal-oxide varistors or the like. The single-phase surge suppressor 114 may include afirst port 120, asecond port 122, and aground port 124. The single-phase surge suppressor 114 may provide a low impedance to theground port 124 if the voltage between thefirst port 120 and thesecond port 122 exceeds a rated value, or if the voltage between eitherport ground port 124 exceeds a rated value. The single-phase surge suppressor 114 may be oriented in thesystem 100 such that thefirst port 120 is coupled to thefirst phase 106, thesecond port 122 is coupled to thesecond phase 108, and theground port 124 is coupled to theneutral line 110. - The plurality of
capacitors 116 generally provides a substantially similar function to the plurality ofcapacitors 32 above, wherein thecapacitors first phase 106 and thesecond phase 108 and may provide power factor correction of theelectric power supply 102. The plurality ofcapacitors 116 may include at least afirst capacitor 126, which, like thefirst capacitor 50, includes a first terminal 128 a and a second terminal 128 b. The first terminal 128 a may be coupled to thefirst phase 106, and the second terminal 128 b may be coupled to thesecond phase 108. In various embodiments, the plurality ofcapacitors 116 may also include asecond capacitor 132, with a first terminal 130 a coupled to thesecond phase 108 and a second terminal 130 b coupled to thefirst phase 106. - The applicant believes that the
systems 10, 100: elevate and stabilize voltage from theelectric power supply electric power supply load phases systems systems phases load - To illustrate the performance of the
system 100, applicant implemented thesystem 100 at a residence and measured various power parameters both with thesystem 100 operating and with thesystem 100 not operating. The results of the measurement are shown inFIG. 3 . With thesystem 100 implemented between theelectric power supply 102 and theload 104, the real power, the apparent power, the reactive power, and the power factor were measured in the vicinity of thesystem 100 at regular intervals on a particular day. Afirst plot 300 shows the real power measured in kiloWatts (kW) vs. the time of day (in military time). Asecond plot 302 shows the apparent power measured in kiloVoltAmps (kVA) vs. time of day. Athird plot 304 shows the reactive power measured in kiloVoltAmps Reactive (kVAR) vs. time of day. Afourth plot 306 shows the power factor (in a range from approximately zero to approximately one) vs. time of day. - As seen in
FIG. 3 , from the time of approximately 13:00 until approximately 14:30, thesystem 100 was in operation. The magnitudes of the real power and the apparent power reflected the activity ofvarious loads 104. The reactive power averaged approximately 0 kVAR and the power factor averaged approximately 1. At around 14:30, thesystem 100 was decoupled from theelectric power supply 102 and theload 104. The magnitudes of the real power and the apparent power increased. The magnitude of the reactive power increased in the negative direction, and the power factor averaged at a value less than 1. Thus, with thesystem 100 not implemented between theelectric power supply 102 and theload 104, theload 104 consumed greater real power, apparent power, and reactive power. Furthermore, the power factor reduced to less than 1. - Although the invention has been described with reference to the embodiments illustrated in the attached drawing figures, it is noted that equivalents may be employed and substitutions made herein without departing from the scope of the invention as recited in the claims.
Claims (8)
1. A system for conditioning a single phase alternating current electric power, including a first line, a second line, and a neutral line, supplied to a load, the system comprising:
a plurality of first surge arresters including a first terminal connected to the first line, a second terminal connected to the second line, and a third terminal connected to the neutral line and configured to minimize an amount by which the voltage between the first line and the second line exceeds a rated value by presenting a low impedance to the neutral line when the voltage between the first line and the second line exceeds the rated value; and
a capacitor including a first terminal connected to the first line and a second terminal connected to the second line and configured to minimize an amount by which the voltage between the first line and the second line falls below the rated value.
2. The system of claim 1 , wherein each of the first surge arresters includes an electric current rating, such that the number of first surge arresters is related to the electric current requirement of the load divided by the electric current rating.
3. The system of claim 1 , further comprising a single phase surge suppressor coupled to the first line, the second line, and the neutral line and configured to minimize an amount by which the voltage between the two lines and the neutral line exceeds a rated value by presenting the low impedance to the neutral line when either the first line or the second line exceeds the rated value.
4. The system of claim 3 , wherein the first surge arresters and the single phase surge suppressor are passive.
5. A system for conditioning a single phase alternating current electric power, including a first line, a second line, and a neutral line, supplied to a load, the system comprising:
a single phase surge suppressor coupled to the first line, the second line, and the neutral line and configured to minimize an amount by which the voltage between the two lines and the neutral line exceeds a rated value by presenting the low impedance to the neutral line when either the first line or the second line exceeds the rated value;
a plurality of first surge arresters including a first terminal connected to the first line, a second terminal connected to the second line, and a third terminal connected to the neutral line and configured to minimize an amount by which the voltage between the first line and the second line exceeds a rated value by presenting a low impedance to the neutral line when the voltage between the first line and the second line exceeds the rated value; and
a capacitor including a first terminal connected to the first line and a second terminal connected to the second line and configured to minimize an amount by which the voltage between the first line and the second line falls below the rated value.
6. The system of claim 5 , wherein each of the first surge arresters includes an electric current rating, such that the number of first surge arresters is related to the electric current requirement of the load divided by the electric current rating.
7. The system of claim 5 , wherein the first surge arresters and the single phase surge suppressor are passive.
8. A system for conditioning a single phase alternating current electric power, including a first line, a second line, and a neutral line, supplied to a load, the system comprising:
a single phase surge suppressor coupled to the first line, the second line, and the neutral line and configured to minimize an amount by which the voltage between the two lines and the neutral line exceeds a rated value by presenting the low impedance to the neutral line when either the first line or the second line exceeds the rated value;
a plurality of first surge arresters including a first terminal connected to the first line, a second terminal connected to the second line, and a third terminal connected to the neutral line and configured to minimize an amount by which the voltage between the first line and the second line exceeds a rated value by presenting a low impedance to the neutral line when the voltage between the first line and the second line exceeds the rated value, each first surge arrester including an electric current rating, such that the number of first surge arresters is related to the electric current requirement of the load divided by the electric current rating; and
a capacitor including a first terminal connected to the first line and a second terminal connected to the second line and configured to minimize an amount by which the voltage between the first line and the second line falls below the rated value.
Priority Applications (1)
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US14/559,328 US20150085417A1 (en) | 2008-10-14 | 2014-12-03 | Electrical energy saving system |
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US19603608P | 2008-10-14 | 2008-10-14 | |
US12/579,030 US8971007B2 (en) | 2008-10-14 | 2009-10-14 | Electrical energy saving system |
US14/559,328 US20150085417A1 (en) | 2008-10-14 | 2014-12-03 | Electrical energy saving system |
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US12/579,030 Division US8971007B2 (en) | 2008-10-14 | 2009-10-14 | Electrical energy saving system |
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US20150085417A1 true US20150085417A1 (en) | 2015-03-26 |
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US12/579,030 Active 2031-05-28 US8971007B2 (en) | 2008-10-14 | 2009-10-14 | Electrical energy saving system |
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US (2) | US8971007B2 (en) |
EP (1) | EP2342792A4 (en) |
JP (1) | JP2012506229A (en) |
KR (1) | KR20110071003A (en) |
CN (1) | CN102187541A (en) |
CA (1) | CA2739450C (en) |
MX (1) | MX2011003794A (en) |
WO (1) | WO2010045349A2 (en) |
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US20160072290A1 (en) * | 2013-06-28 | 2016-03-10 | Korea Electric Power Corporation | Apparatus and method for operating distributed generator in connection with power system |
CN105633937A (en) * | 2016-02-29 | 2016-06-01 | 长沙群瑞电子科技有限公司 | Single-phase power supply series-wound type overvoltage protector |
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DK200801782A (en) * | 2008-12-15 | 2010-06-16 | Danfoss Ventures As | Power saving system and method |
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US9014868B2 (en) * | 2012-03-29 | 2015-04-21 | International Business Machines Corporation | Power factor |
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IT201700036805A1 (en) * | 2017-04-04 | 2018-10-04 | Eteco S R L | "SYSTEM FOR THE REDUCTION OF MAGNETIC AND MECHANICAL THERMAL LOSSES IN ELECTRIC NETWORKS" |
US10530151B2 (en) * | 2018-01-09 | 2020-01-07 | Timothy A Carty | System and method for suppressing electromagnetic pulse-induced electrical system surges |
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Also Published As
Publication number | Publication date |
---|---|
WO2010045349A2 (en) | 2010-04-22 |
JP2012506229A (en) | 2012-03-08 |
WO2010045349A3 (en) | 2010-07-29 |
US20100091423A1 (en) | 2010-04-15 |
EP2342792A2 (en) | 2011-07-13 |
CA2739450A1 (en) | 2010-04-22 |
MX2011003794A (en) | 2011-07-29 |
KR20110071003A (en) | 2011-06-27 |
CN102187541A (en) | 2011-09-14 |
EP2342792A4 (en) | 2012-09-26 |
US8971007B2 (en) | 2015-03-03 |
CA2739450C (en) | 2017-07-04 |
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