Multi-winding component-time power supply isolated flyback DC chopper type single-stage multi-input inverter

Abstract

The invention relates to a multi-winding component-time power supply isolation flyback DC chopper type single-stage multi-input inverter, the circuit structure of which is a combined multi-input single-output isolation The input filter is connected with a common output filter circuit. Each input terminal of the combined multi-input single-output isolated bidirectional flyback DC chopper is connected to the output terminal of each input filter one by one. The filter circuit is connected. This inverter has multiple input source electrical isolation, time-sharing power supply, output and input electrical isolation, simple circuit topology, single-stage power conversion, high power density, high conversion efficiency, high reliability when the load is short-circuited, small output capacity, Wide application prospects and other characteristics have laid a key technology for realizing the small-capacity distributed power supply system of multiple new energy joint power supply.

Description

technical field [0001] The multi-winding group timed power supply isolation flyback DC chopper type single-stage multi-input inverter involved in the invention 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 ...

AI Technical Summary

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 flexibility of the system, but there are defects such as two-stage power conversion, low power density, low conversion efficiency, and high cost. Its practicality is limited to a large extent

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