CN103280975A - Extendable high direct voltage input power supply and extension method - Google Patents
Extendable high direct voltage input power supply and extension method Download PDFInfo
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- CN103280975A CN103280975A CN201310179568XA CN201310179568A CN103280975A CN 103280975 A CN103280975 A CN 103280975A CN 201310179568X A CN201310179568X A CN 201310179568XA CN 201310179568 A CN201310179568 A CN 201310179568A CN 103280975 A CN103280975 A CN 103280975A
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Abstract
The invention discloses an extendable high direct voltage input power supply and an extension method. The power supply comprises more than two power units, an output unit and a control unit, wherein the primary sides of the power units adopt a serial connection mode, and the secondary sides of the power units adopt a parallel connection mode, i.e. the secondary sides of transformers in all the power units are connected in parallel, and then, the voltage is output as an output voltage after the rectification, filtration and voltage stabilization of the output unit; the output signals of current detection units of all the power units are summed through a summing unit, and the summed signal is sent to the control unit; and the control unit reads the summed current signal and the output voltage signal and forms a drive signal through calculation, and the drive signal is used for driving switching devices in all the power units and controlling the on/off of all the switching devices. The power supply can be suitable for inputting high direct voltage and provides a wide input voltage scope.
Description
Technical field
The present invention relates to a kind of high voltage source, especially a kind of extendible high voltage direct current input power supply and extended method.
Background technology
Along with the progress at full speed of power electronics semiconductor technology in recent years, the novel power semiconductor device that turn-offs of high voltage, big electric current, for example IGBT, IEGT etc. begin to be widely used in the power engineering.Each turn-off semiconductor device has supporting with it control and driver element, and they all are based on traditional design of electronic circuits, works under the conventional analog-and digital-circuit supply voltage (15V, 5V or 3.3V).Turn-off semiconductor device and control thereof and driver element are formed power cell jointly, and a plurality of power cells insert high voltage dc bus by serial or parallel connection, form the power equipment that can be applicable to multiple purpose.
At present, for providing a kind of common way of control power supply, power cell is to use an extra supply line.But when this extra supply line broke down, the control circuit of power cell can't normally cut out high voltage dc bus because losing power supply, may cause serious accident.For realizing the self-starting of this class power engineering equipment, its control unit power supply can only obtain from its high voltage dc bus.This just needs the Switching Power Supply of a kind of high voltage input of design, voltage output.
And the traditional switch power technology is subject to the withstand voltage level (the highest withstand voltage 4000V of individual devices) that has semiconductor device now, and input voltage can only be accomplished about the highest 1000V～2000V; Simultaneously input voltage range is narrower, has only input range about 3 times (for example 300～1000V) usually.
Summary of the invention
The embodiment of the invention provides a kind of extendible high voltage direct current input power supply.
The embodiment of the invention provide a kind of extendible high voltage direct current input power supply, by constituting with the lower part:
Two with last power cell: described power cell primary side adopts the connected mode of series connection, the low side high-end, second power cell that is second power cell of low side connection of first power cell connects the high-end of the 3rd power cell, the primary side of described power cell adopts connected mode in parallel, the secondary lateral parallel that is about to transformer in each power cell gets up, and exports as output voltage by after the voltage stabilizing of output unit rectifying and wave-filtering then;
Output unit: the current detecting unit output signal of each described power cell is delivered to control unit through the adder summation;
Control unit: described control unit reads electric current and signal and output voltage signal, drives signal by calculating to form, and described driving signal is used for driving the switching device in each power cell, controls the break-make of each switching device.
Preferably, described power cell comprises with the lower part:
Transformer: comprise primary side winding, primary side winding;
Switching device: described switching device is solid switch device;
Current detecting unit: the current signal that described current detecting unit will flow through transformer primary and switching device is converted to voltage signal.
Preferably, the quantity of the power cell of described high voltage direct current input power supply can be for a plurality of, each power cell has a maximum input voltage, the quantity of the power cell that adopts is determined by the input voltage of equipment and the maximum input voltage of single power cell, when the input voltage of equipment increases, the more power of then connecting unit.
Accordingly, the invention provides a kind of extended method of extendible high voltage direct current input power supply, it is characterized in that, may further comprise the steps:
The primary side of described power cell adopts connected mode in parallel, the secondary lateral parallel that is about to transformer in each power cell gets up, export as output voltage by after the voltage stabilizing of output unit rectifying and wave-filtering then, the current detecting unit output signal of each described power cell is through the adder summation, deliver to control unit, described control unit reads electric current and signal and output voltage signal, drive signal by calculating to form, described driving signal is used for driving the switching device in each power cell, controls the break-make of each switching device.
Preferably, the described current detecting unit current signal that will flow through transformer primary and switching device is converted to voltage signal.
The embodiment of the invention has following characteristics with respect to prior art:
Ratio is in existing product, and the power supply that the present invention realizes no longer is subject to the withstand voltage level of single switch device, can realize that input voltage is higher than the voltage transformation of single switch device withstand voltage level far away.
The novel energy power supply of getting is by the series connection of a plurality of semiconductor device, not only can realize the high voltage input, the thermal losses of single semiconductor device in the traditional switch power supply is evenly distributed on a plurality of semiconductor device, greatly reduce the device heat load, prolong device lifetime, improve equipment dependability.
The novel energy power supply of getting has not only been realized high input voltage by the series connection of a plurality of semiconductor device, has also realized wide input range.In our present engineering practice, realized about 15 times input range (but under 200～3000V input voltage all operate as normal), this just can guarantee to adopt novel electric power system of getting the energy power supply can start working at the starting stage control and the driver element that start, and system safety is controlled.
Description of drawings
Fig. 1 is schematic diagram of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that described herein only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to the scope of protection of the invention.
The embodiment of the invention provide a kind of extendible high voltage direct current input power supply, by constituting with the lower part:
Two with last power cell: described power cell primary side adopts the connected mode of series connection, the low side high-end, second power cell that is second power cell of low side connection of first power cell connects the high-end of the 3rd power cell, the primary side of described power cell adopts connected mode in parallel, the secondary lateral parallel that is about to transformer in each power cell gets up, and exports as output voltage by after the voltage stabilizing of output unit rectifying and wave-filtering then;
Output unit: the current detecting unit output signal of each described power cell is delivered to control unit through the adder summation;
Control unit: described control unit reads electric current and signal and output voltage signal, drives signal by calculating to form, and described driving signal is used for driving the switching device in each power cell, controls the break-make of each switching device.
Preferably, described power cell comprises with the lower part:
Transformer: comprise primary side winding, primary side winding;
Switching device: described switching device is solid switch device;
Current detecting unit: the current signal that described current detecting unit will flow through transformer primary and switching device is converted to voltage signal.
Preferably, the quantity of the power cell of described high voltage direct current input power supply can be for a plurality of, each power cell has a maximum input voltage, the quantity of the power cell that adopts is determined by the input voltage of equipment and the maximum input voltage of single power cell, when the input voltage of equipment increases, the more power of then connecting unit.
Accordingly, the invention provides a kind of extended method of extendible high voltage direct current input power supply, it is characterized in that, may further comprise the steps:
The primary side of described power cell adopts connected mode in parallel, the secondary lateral parallel that is about to transformer in each power cell gets up, export as output voltage by after the voltage stabilizing of output unit rectifying and wave-filtering then, the current detecting unit output signal of each described power cell is through the adder summation, deliver to control unit, described control unit reads electric current and signal and output voltage signal, drive signal by calculating to form, described driving signal is used for driving the switching device in each power cell, controls the break-make of each switching device.
Preferably, the described current detecting unit current signal that will flow through transformer primary and switching device is converted to voltage signal.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (5)
1. an extendible high voltage direct current input power supply is characterized in that, by constituting with the lower part:
Two with last power cell: described power cell primary side adopts the connected mode of series connection, the low side high-end, second power cell that is second power cell of low side connection of first power cell connects the high-end of the 3rd power cell, the primary side of described power cell adopts connected mode in parallel, the secondary lateral parallel that is about to transformer in each power cell gets up, and exports as output voltage by after the voltage stabilizing of output unit rectifying and wave-filtering then;
Output unit: the current detecting unit output signal of each described power cell is delivered to control unit through the adder summation;
Control unit: described control unit reads electric current and signal and output voltage signal, drives signal by calculating to form, and described driving signal is used for driving the switching device in each power cell, controls the break-make of each switching device.
2. a kind of extendible high voltage direct current as claimed in claim 1 is imported power supply, it is characterized in that described power cell comprises with the lower part:
Transformer: comprise primary side winding, primary side winding;
Switching device: described switching device is solid switch device;
Current detecting unit: the current signal that described current detecting unit will flow through transformer primary and switching device is converted to voltage signal.
3. a kind of extendible high voltage direct current as claimed in claim 1 or 2 is imported power supply, it is characterized in that, the quantity of the power cell of described high voltage direct current input power supply can be for a plurality of, each power cell has a maximum input voltage, the quantity of the power cell that adopts is determined by the input voltage of equipment and the maximum input voltage of single power cell, when the input voltage of equipment increases, the more power of then connecting unit.
4. the extended method of an extendible high voltage direct current input power supply is characterized in that, may further comprise the steps:
The primary side of described power cell adopts connected mode in parallel, the secondary lateral parallel that is about to transformer in each power cell gets up, export as output voltage by after the voltage stabilizing of output unit rectifying and wave-filtering then, the current detecting unit output signal of each described power cell is through the adder summation, deliver to control unit, described control unit reads electric current and signal and output voltage signal, drive signal by calculating to form, described driving signal is used for driving the switching device in each power cell, controls the break-make of each switching device.
5. the extended method of a kind of extendible high voltage direct current input power supply as claimed in claim 4 is characterized in that, may further comprise the steps: state the current signal that current detecting unit will flow through transformer primary and switching device and be converted to voltage signal.
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| CN201310179568XA CN103280975A (en) | 2013-05-16 | 2013-05-16 | Extendable high direct voltage input power supply and extension method |
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| CN201310179568XA CN103280975A (en) | 2013-05-16 | 2013-05-16 | Extendable high direct voltage input power supply and extension method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5796595A (en) * | 1994-02-25 | 1998-08-18 | Astec International Limited | Interleaved continuous flyback power converter system |
| CN1335668A (en) * | 2001-08-24 | 2002-02-13 | 深圳市安圣电气有限公司 | Voltage balancer circuit for power converter |
| CN1885701A (en) * | 2006-06-07 | 2006-12-27 | 深圳市英威腾电气有限公司 | DC/DC transformation topology circuit of high-voltage switch power supply |
| CN202135056U (en) * | 2011-06-29 | 2012-02-01 | 深圳市核达中远通电源技术有限公司 | Equalization circuit used in power supply converter |
-
2013
- 2013-05-16 CN CN201310179568XA patent/CN103280975A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5796595A (en) * | 1994-02-25 | 1998-08-18 | Astec International Limited | Interleaved continuous flyback power converter system |
| CN1335668A (en) * | 2001-08-24 | 2002-02-13 | 深圳市安圣电气有限公司 | Voltage balancer circuit for power converter |
| CN1885701A (en) * | 2006-06-07 | 2006-12-27 | 深圳市英威腾电气有限公司 | DC/DC transformation topology circuit of high-voltage switch power supply |
| CN202135056U (en) * | 2011-06-29 | 2012-02-01 | 深圳市核达中远通电源技术有限公司 | Equalization circuit used in power supply converter |
Non-Patent Citations (1)
| Title |
|---|
| DESHAN SHA ET AL.: "Cross-Feedback Output-Current-Sharing Control for Inpu-Series-Output-Parallel Modular DC-DC Converters", 《IEEE TRANSACTIONS ON POWER ELECTRONICS》, vol. 25, no. 11, 30 November 2010 (2010-11-30), XP011343814, DOI: doi:10.1109/TPEL.2010.2049504 * |
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