POWER CONVERSION DEVICE AND CONTROL METHOD THEREOF

• Main Authors: TOBARI KAZUAKI, HADINATA AGNES, NAKAMURA ATSUHIKO, SUGIMOTO TAKUYA, IWAJI YOSHITAKA, KONUMA YUSAKU
• Format: Patent
• Language: English; Japanese
• Published: 23.05.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide a power conversion device in which a power converter does not fall into an overcurrent or an overvoltage when an inertia moment value of a machine attached to a motor is large in acceleration/deceleration operation of the motor.SOLUTION: A power conversion device that controls a DC voltage Eof a power converter 2 that drives a motor 1 and an output frequency and an output current, the power conversion device including: a frequency command correction operation section 6 that automatically adjusts a frequency command, in which the frequency command is automatically adjusted so that the power converter 2 does not fall into overvoltage or overcurrent in an acceleration/deceleration operation of the motor 1.SELECTED DRAWING: Figure 1 【課題】モータの加減速運転において、モータに取り付ける機械の慣性モーメント値が大きい場合に、電力変換器が過電流や過電圧に陥らない電力変換装置を提供する。【解決手段】モータ１を駆動する電力変換器２の直流電圧ＥＤＣと出力周波数および出力電流を制御する電力変換装置であって、周波数指令の自動調整を行う周波数指令修正演算部６を有し、モータ１の加減速運転において電力変換器２が過電圧や過電流に陥らないよう周波数指令の自動調整を行うように構成する。【選択図】図１