To provide a power conversion system capable of continuing operation of an electric vehicle even when part of apparatuses fails.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 battery device includes: a third contactor for switching the connection of the power line for supplying power from a battery pack to the DC-AC power conversion part for load; and a fourth contactor for switching the connection of the battery pack and the power line. The power line for supplying power from the battery pack to the auxiliary machine branches from the power line between the third contactor and the fourth contactor.SELECTED DRAWING: Figure 2
【課題】 一部の機器の故障時でも電気車の運行を継続させることが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、バッテリ装置は、組電池から負荷用直流−交流電力変換部へ電力を供給する電力線の接続を切替える第3接触器と、組電池と電力線との接続を切替える第4接触器と、を備え、組電池から補機へ電力を供給する電力線は、第3接触器と第4接触器との間の電力線から分岐している。【選択図】図2
POWER CONVERSION SYSTEM
電力変換システム
2021-03-18
Patent
Elektronische Ressource
Japanisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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