To provide a power conversion system capable of utilizing power supplied from an external power supply other than an overhead power line.SOLUTION: A power conversion system includes: a power conversion device for travelling; a power conversion device for auxiliary power supply for converting AC power supplied via the transformer and outputting it to the drive power of an AC load and a DC load; a battery device connected to a power line for connecting an AC-DC power conversion part for load and a DC-AC power conversion part for load DC power, and a power line for connecting an AC-DC power for load conversion part for travelling and a DC-AC power conversion part for travelling; and an auxiliary machine connected to a power line for connecting the power conversion device for auxiliary power supply and the battery device. The power conversion device for auxiliary power supply includes: an external power supply connection detection part; a chopper circuit for converting a voltage of DC power outputted from the AC-DC power conversion part for load into a predetermined value and outputting it; and a load power control part which, when the connection of an external power supply is detected, operates the AC-DC power conversion part for load and the chopper circuit to charge the battery device.SELECTED DRAWING: Figure 2
【課題】 架線以外の外部電源から供給される電力を利用可能な電力変換システムを提供する。【解決手段】 実施形態による電力変換システムは、走行用電力変換装置と、変圧器を介して供給された交流電力を変換して交流負荷および直流負荷の駆動電力に出力する補助電源用電力変換装置と、負荷用交流−直流電力変換部と負荷用直流−交流電力変換部直流電力とを接続する電力線、および、走行用交流−直流電力変換部と走行用直流−交流電力変換部とを接続する電力線に接続されたバッテリ装置と、補助電源用電力変換装置とバッテリ装置とを接続する電力線に接続された補機と、を備え、補助電源用電力変換装置は、外部電源接続検知部と、負荷用交流−直流電力変換部から出力される直流電力の電圧を所定の値に変換して出力するチョッパ回路と、外部電源の接続が検知されたときに、負荷用交流−直流電力変換部とチョッパ回路を動作させて、バッテリ装置を充電させる。【選択図】図2
POWER CONVERSION SYSTEM
電力変換システム
2021-03-18
Patent
Elektronische Ressource
Japanisch
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