Auxiliary power supply starting device and auxiliary power supply
A technology of auxiliary power supply and starting device, which is applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical components, etc., can solve the problems of large starting resistance, large energy consumption of starting resistance, and reduced power efficiency.
Inactive Publication Date: 2019-09-03
XJ POWER CO LTD +3
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Problems solved by technology
[0003] The purpose of the present invention is to provide a starting device for auxiliary power supply, which is used to solve the problem that the power supply efficiency is greatly reduced due to the large energy consumption of the starting resistor when the starting resistor is used to start the auxiliary power supply in the prior art; the present invention An auxiliary power supply is also provided, which is used to solve the problem that the efficiency of the power supply is greatly reduced due to the large energy consumption of the starting resistor when the starting resistor is used to start the auxiliary power supply in the prior art
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[0029] The technical solution of the present invention will be further described below in conjunction with specific embodiments.
[0030] Device example:
[0031] This embodiment provides a starting device for an auxiliary power supply, which is used to control the start-up of the auxiliary power supply in a cascaded chain H-bridge structure, and solves the problem of large energy consumption due to the start-up resistor when the start-up resistor is used to start the auxiliary power supply in the prior art. And lead to the problem that the power supply efficiency is greatly reduced.
[0032] The auxiliary power starting device provided in this embodiment has a structural principle diagram as shown in figure 1 As shown, it includes a startup circuit and a shutdown circuit, and the shutdown circuit is used to control the shutdown of the startup circuit.
[0033] In the starting device for auxiliary power provided in this embodiment, the starting circuit includes at least two ...
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The invention provides an auxiliary power supply starting device and an auxiliary power supply, and belongs to the technical field of power supply control. The starting device comprises a starting circuit and a turn-off circuit for turning off the starting circuit. The starting circuit comprises starting sub-modules connected in series. The first input end of the starting sub-module is connected to the control end of a first power transistor through a charging branch, and is connected to the positive end of the first power transistor through a first connection line. The control end and the negative end of the first power transistor are connected through a first voltage stabilizing tube. The negative end of the first power transistor is connected to a first output end. The first output endof the last starting sub-module is a voltage output end. The second input end of the turn-off circuit is connected to the control end of a second power transistor through a second connection line. Thenegative end of the second power transistor is grounded. The positive end of the second power transistor is connected to the control end of the first power transistor in the last starting sub-module.The starting device can reduce the energy consumption during the startup process of the auxiliary power supply, and solve the problem that the efficiency of the auxiliary power supply is reduced dueto excessive high energy consumption.
Description
technical field [0001] The invention belongs to the technical field of power supply control, and in particular relates to an auxiliary power starting device and an auxiliary power supply. Background technique [0002] The chained H-bridge cascaded structure is widely used in high-voltage direct current transmission, flexible direct current transmission, high-voltage static reactive power compensation device and high-voltage shore power supply technology. In the chained H-bridge cascaded structure, each IGBT needs a driver and Control the high-voltage auxiliary power supply, the start-up voltage of the auxiliary power supply is sometimes as low as 300V, sometimes as high as 4500V, and the voltage variation range is relatively wide. If the start-up of the auxiliary power supply is realized by connecting the start-up resistor in series with the conventional flyback auxiliary power supply, the resistance value of the start-up resistor is usually relatively large. For example, wh...
Claims
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Login to View More IPC IPC(8): H02M1/36
CPCH02M1/36H02M1/0048Y02B70/10
Inventor 常志国甘江华陈天锦曹智慧邵春梅于越马瑞穆广宁石伟高鹏王聪慧边慧萍张亚平何雨濛吕劲松杨江浩王伟张博丁晓伟
Owner XJ POWER CO LTD