To effectively reduce the number of breaking circuits each connected to a power conversion device in the power conversion device configured by connecting a plurality of power conversion circuits in parallel.SOLUTION: According to one embodiment of the present invention, there are provided a first power conversion circuit group configured by connecting at least one power conversion circuit in parallel; a second power conversion circuit group configured by connecting a plurality of power conversion circuits in parallel, that have the same or substantially the same characteristic as that of the power conversion circuits in the first power conversion circuit group; a cut-off unit for cutting off a circuit during occurrence of abnormality, that is connected onto an input side and/or an output side of the power conversion circuits in the first power conversion circuit group; and a control circuit operated in such a manner that a time average output of the power conversion circuits in the second power conversion circuit group is smaller than another time average output of the power conversion circuits in the first power conversion circuit group.SELECTED DRAWING: Figure 1
【課題】複数の電力変換回路を並列に接続して構成される電力変換装置において、電力変換装置に接続する遮断回路の数量を効果的に削減する。【解決手段】本発明の一態様は、少なくとも一つの電力変換回路を並列に接続して構成される第1の電力変換回路群と、その第1の電力変換回路群の電力変換回路と同じ又は実質的に同じ特性を持つ複数の電力変換回路を並列に接続して構成される第2の電力変換回路群と、第1の電力変換回路群の電力変換回路の入力側及び/又は出力側に接続され、異常発生時に回路を遮断する遮断部と、第2の電力変換回路群の電力変換回路の時間平均の出力が、第1の電力変換回路群の電力変換回路の時間平均の出力よりも小さくなるように運転する制御回路と、を備える。【選択図】図1
POWER CONVERSION DEVICE AND ELEVATOR
電力変換装置及びエレベーター
2019-05-23
Patent
Electronic Resource
Japanese
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B66B Aufzüge , ELEVATORS |