PROBLEM TO BE SOLVED: To stabilize the output voltage of an inverter device.SOLUTION: An auxiliary power supply apparatus 10 according to the present invention comprises an inverter device 14 for converting a DC voltage supplied from a DC power supply to an AC voltage, a filter capacitor 12 connected to the input side of the inverter device 14 in parallel with the inverter device 14, and a control circuit 16 for setting a filtered FC (Filter Capacitor) voltage so as to follow the FC voltage and controlling the inverter device 14 on the basis of the set filtered FC voltage. The control circuit 16, when the difference D between the filtered FC voltage and the FC voltage is within a predetermined range, causes the filtered FC voltage to follow the FC voltage at a speed according to a predetermined filter constant T, and, at the time point when the difference D becomes out of the predetermined range, sets the FC voltage at that time point is set as the filtered FC voltage.SELECTED DRAWING: Figure 1
【課題】インバータ装置の出力電圧の安定化を図る。【解決手段】本発明に係る補助電源装置10は、直流電源から供給された直流電圧を交流電圧に変換するインバータ装置14と、インバータ装置14の入力側に、インバータ装置14に並列に接続されたフィルタコンデンサ12と、FC電圧に追従するようにフィルタ付きFC電圧を設定し、設定したフィルタ付きFC電圧に基づき、インバータ装置14を制御する制御回路16と、を備え、制御回路16は、フィルタ付きFC電圧とFC電圧との差分Dが所定の範囲内にある場合には、予め定められたフィルタ定数T1に応じた速さでフィルタ付きFC電圧をFC電圧に追従させ、差分Dが所定の範囲を外れた時点で、その時点でのFC電圧をフィルタ付きFC電圧として設定する。【選択図】図1
AUXILIARY POWER SUPPLY APPARATUS
補助電源装置
2018-04-12
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 |
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