PROBLEM TO BE SOLVED: To provide a power conversion device capable of appropriately limiting restart by a user when an overcurrent is detected.SOLUTION: A power conversion device 1, converting DC power into AC power to drive an AC motor 2, includes: a shunt resistance element 12 for detecting a determination voltage value corresponding to both of a current and a variation in the current; a control part 10 which instructs an operation stop when the determination voltage value is above a first determination threshold and which performs permanent stop processing for limiting an operation restart of power conversion after an operation stop of power conversion when the determination voltage value is above a second determination threshold larger than the first determination threshold.SELECTED DRAWING: Figure 1
【課題】過電流が検出された場合において、利用者による再起動の制限を適切に行うことができる電力変換装置を提供する。【解決手段】直流から交流に電力変換して交流モータ2を駆動させる電力変換装置1は、電流と当該電流の変化量と、の両方に応じた判定用電圧値を検出するシャント抵抗素子12と、判定用電圧値が第1判定閾値を上回った場合に、電力変換の運転停止を指示し、かつ、判定用電圧値が第1判定閾値よりも大きい第2判定閾値を上回った場合に、電力変換の運転停止後において、電力変換の運転再開を制限する永久停止処理を施す制御部10を備えている。【選択図】図1
POWER CONVERSION DEVICE, AIR-CONDITIONING SYSTEM, CONTROL METHOD FOR POWER CONVERSION DEVICE AND PROGRAM
電力変換装置、空調システム、電力変換装置の制御方法及びプログラム
2016-10-06
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 / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
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