Isolated flyback DC chopper-type single-stage multi-input inverter for parallel time-sharing power supply

A DC chopper and DC chopper technology, applied in the direction of converting DC power input to DC power output, AC power input converting to DC power output, adjusting electrical variables, etc., can solve the problem of two-stage power conversion, low conversion efficiency, Practical limitations and other issues, to achieve the effects of high reliability, high conversion efficiency, and small output capacity

Inactive Publication Date: 2018-05-29
QINGDAO UNIV
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Problems solved by technology

The distributed power generation system realizes multiple input sources simultaneously supplying power to loads and prioritizing the utilization of energy, which improves the stability and f

Method used

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  • Isolated flyback DC chopper-type single-stage multi-input inverter for parallel time-sharing power supply
  • Isolated flyback DC chopper-type single-stage multi-input inverter for parallel time-sharing power supply
  • Isolated flyback DC chopper-type single-stage multi-input inverter for parallel time-sharing power supply

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described below in conjunction with the drawings and embodiments of the specification.

[0029]Parallel time-sharing power supply isolated flyback DC chopper type single-stage multi-input inverter is a multi-input and single-output combined isolated bidirectional flyback DC chopper that combines multiple input filters with common ground and a common output filter The circuit connection structure, each input end of the multi-input single-output combined isolation bidirectional flyback DC chopper is connected with the output end of each input filter in one-to-one correspondence, and the multi-input single output combined isolation bidirectional flyback DC chopper The output end is connected with the output filter circuit, and the multi-input and single-output combined isolation bidirectional flyback DC chopper is composed of a multi-channel parallel connection time-sharing selection four-quadrant power switch...

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Abstract

The invention relates to an isolated flyback DC chopper-type single-stage multi-input inverter for parallel time-sharing power supply. A circuit structure of the isolated flyback DC chopper-type single-stage multi-input inverter is formed by connecting multiple common-ground input filters and a common output filter circuit through a multi-input and single-output combined isolated bi-directional flyback DC chopper; each input end of the multi-input and single-output combined isolated bi-directional flyback DC chopper is connected with an output end of each input filter in a manner of one-to-onecorrespondence; and the output end of the multi-input and single-output combined isolated bi-directional flyback DC chopper is connected with the output filter circuit. The inverter has the characteristics of common-ground input sources, time-sharing power supply, electric isolation of output and input, a simple circuit topology, single-stage power conversion, high power density, high conversionefficiency, high reliability in a short circuit of load, low output capacity and a wide application prospect, and a key technology is laid for a low-capacity distributed power supply system for combined power supply of multiple new energy sources.

Description

technical field [0001] The invention relates to a parallel time-sharing power supply isolated flyback DC chopper type single-stage multi-input inverter, which belongs to the power electronic conversion technology. Background technique [0002] The inverter is a static converter device that uses power semiconductor devices to convert an unstable and inferior DC power into a stable and high-quality AC power for AC loads or AC grid connection. Inverters with low-frequency electrical isolation or high-frequency electrical isolation between the output AC load or the AC grid and the input DC power supply are called low-frequency link and high-frequency link inverters, respectively. The electrical isolation components mainly play the following roles in the inverter: (1) realize the electrical isolation between the output and input of the inverter, and improve the safety, reliability and electromagnetic compatibility of the inverter operation; (2) realize The matching between the o...

Claims

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Application Information

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IPC IPC(8): H02M7/537H02M3/335H02M7/5387
CPCH02M3/33592H02M7/537H02M7/53871H02M1/007
Inventor 陈道炼
Owner QINGDAO UNIV
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