SWITCHING DEVICE, SWITCHING POWER SUPPLY DEVICE, AND VEHICLE

To inhibit occurrence of inrush current flowing through a switching circuit without using an inrush current prevention circuit.SOLUTION: A switching device 10 including a plurality of power conversion circuits corresponding to respective phases of a multi-phase AC power supply, an external power sup...

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Bibliographische Detailangaben
Hauptverfasser: SHIBANO YUJI, TOMINAGA REIJI, HARIMOTO SHUJI, KODERA YUJI, TOMIE SATOSHI, MIYAMOTO TAKAO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To inhibit occurrence of inrush current flowing through a switching circuit without using an inrush current prevention circuit.SOLUTION: A switching device 10 including a plurality of power conversion circuits corresponding to respective phases of a multi-phase AC power supply, an external power supply, comprises: a switching circuit including a switching relay capable of switching a connection destination of one power conversion circuit, of the plurality of power conversion circuits, other than a specific power conversion circuit corresponding to a specific phase of the external power supply to a phase corresponding to the one power conversion circuit or the specific phase; and a control unit for controlling operation of the switching relay at time of zero cross of AC voltage estimated on the basis of the AC voltage.SELECTED DRAWING: Figure 2 【課題】突入電流防止回路を用いることなく切替回路に流れる突入電流の発生を抑制する。【解決手段】スイッチング装置10は、外部電源である複数相交流電源の各相に対応する複数の電力変換回路を有するスイッチング装置であって、複数の電力変換回路のうち、外部電源の特定の相に対応する特定の電力変換回路以外の他の電力変換回路の接続先を、当該他の電力変換回路に対応する相又は特定の相に切り替え可能な切替リレーを有する切替回路と、交流電圧に基づき推定された前記交流電圧がゼロクロスする時刻に前記切替リレーの動作を制御する制御部と、を備える。【選択図】図2