Bidirectional isolation type DC-DC buck-boost rectification power supply module
A DC-DC, bidirectional isolation technology, applied in the field of converters, can solve the problems of unstable output power and power, poor output volt-ampere characteristic curve, hydrogen fuel cell power supply, etc., and achieve the effect of high practicability and promotion value
Pending Publication Date: 2020-12-29
成都通用整流电器研究所
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[0003] At present, hydrogen energy is rich in resources and widely used, and there is no pollution in the process of hydrogen production and hydrogen fuel generation. It is a high-quality new energy source. In the process of using hydrogen energy, hydrogen fuel cells are usually used to generate electricity. When the battery generates electricity, the output volt-ampere characteristic curve is poor, and the output power and power are unstable, which will bring certain difficulties in the actual engineering application process. Due to the output characteristics of the hydrogen fuel cell, it cannot directly supply power to the load.
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[0041]Such asfigure 1 As shown, a two-way isolated DC-DC buck-boost rectifier power module of the present invention includes a DC power supply, a DC / DC chopping up-and-down module, a two-way isolated DC / DC conversion unit module, a filter circuit, and load equipment. The DC power supply inputs the DC voltage to the DC / DC chopper lifting module to regulate the magnitude of the DC voltage, and the bidirectional DC / DC chopper lifting module and the bidirectional isolated DC / DC conversion unit module realize the charging or discharging of the load equipment Then, the two-way isolated DC / DC conversion unit module is isolated and rectified, and then flows into the filter circuit. After processing, a stable DC voltage flows into the load device to supply power. The two-way isolated DC / DC conversion unit module increases the input DC power supply. The AC component in the pulsating DC voltage is reduced by the filter circuit, and a stable DC voltage is obtained and applied to the load equipm...
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The invention discloses a bidirectional isolation type DC-DC buck-boost rectification power supply module, and relates to the technical field of converters. The bidirectional isolation type DC-DC buck-boost rectification power supply module comprises a DC / DC chopper boost-buck module, a bidirectional isolation DC / DC conversion unit module and a filter circuit. According to the invention, through adirect current microgrid, the power generation characteristics of a hydrogen fuel cell, and a grid-connected DC / DC module, a mixed type bidirectional isolation DC / DC converter module is constructed by a bidirectional non-isolation converter and a bidirectional isolation type DC / DC converter composed of Bboot and Buck, so that the mixed type bidirectional isolation DC / DC converter module can be used for DC / DC conversion of DC voltage generated by hydrogen fuel power generation, DC / DC conversion of electric equipment and direct current voltage regulation and control of the energy storage systembattery of the direct current microgrid; and an H-bridge PWM inversion unit in the bidirectional isolation DC / DC conversion unit module inverts a direct-current power supply into PWM high-frequency alternating-current square-wave pulses, and the power supply module not only has the function of bidirectional DC / DC power conversion, but also has the characteristic of input / output electrical isolation.
Description
Technical field[0001]The invention relates to the technical field of converters, in particular to a bidirectional isolated DC-DC buck-boost rectifier power module.Background technique[0002]DC / DC converter technology is to convert non-adjustable DC voltage into adjustable or fixed DC voltage. It is a technology to efficiently control power conversion by switching conditions. The modified technology is currently used in various distributed power systems, solar energy Power supply, fuel cell, switching power supply and DC speed control system.[0003]At present, hydrogen energy is rich in resources and widely used, and there is no pollution in the process of hydrogen production and hydrogen fuel generation. It is a high-quality new energy. In the process of hydrogen energy use, hydrogen fuel cells are usually used to generate electricity. However, hydrogen fuel When the battery generates power, it has a poor output volt-ampere characteristic curve, and there is a problem of unstable outp...
Claims
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Login to View More IPC IPC(8): H02M3/158H02M3/335
CPCH02M3/1582H02M3/33584H02M1/0067
Inventor 江之奎张建保罗军江瀛
Owner 成都通用整流电器研究所