| 英文摘要 |
A bidirectional flyback converter was devised, built and tested. Such a device would be useful as part of a larger DC microgridsystem that may be installed as part of a residential energy storage solution. Two bidirectional flyback converters were connected inparallel with an interleaved duty cycle control to decrease ripple currents on the input voltage and output load. When energy storageunits such as batteries are charged from the DC bus, the flyback delivers power from the DC microgrid to either the load or storageside. When the energy of the energy storage unit is released, the flyback mechanism reverses the power flow and releases the storedenergy back through the DC microgrid. The principle benefit of such a device is the relative simplicity of the circuit, and fewerpowered devices. No fast recovery diode is used in this design, improving efficiency. The operational principles, systemcharacteristics, design example and control characteristics are provided in detail. A hardware circuit with a 190 V input and 48V/8.33 A output was constructed. The feasibility of the tested device was substantiated by the test results and waveform outputs. |
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