CONTROL DEVICE FOR POWER CONVERTER, POWER CONVERSION SYSTEM, COMPRESSOR DRIVE SYSTEM, FLYWHEEL POWER GENERATION SYSTEM, AND CONTROL METHOD FOR POWER CONVERTER

PROBLEM TO BE SOLVED: To make vibration suppression of a drive system compatible with fluctuation suppression of power that is supplied from an AC power source or regenerated to the AC power source.SOLUTION: A system comprises: a forward converter 2 for converting AC power of a power source 1 into DC power; a backward converter 4 for converting DC power into AC power; a capacitor 3 which is provided between the forward converter 2 and the backward converter 4 and charges and discharges DC power; and a rotary electric machine 6 which is driven by being supplied with AC power from the backward converter 4 or regenerates AC power through the backward converter 4 and the forward converter 2 to the power source 1. The system also comprises a control device 8A for power converter characterized in including: a vibration suppression control part 83 which outputs a torque current command correction value for cancelling axial vibrations caused by a vibration frequency of a transmission system including the rotary electric machine 6 to a current control part 84 of the backward converter 4; and an output compensation control part 88 which outputs a correction value for suppressing the AC power of the power source that is fluctuated by the vibration suppression control part 83, to a voltage control part 89 of the forward converter 2.SELECTED DRAWING: Figure 1 【課題】駆動系の振動抑制と、交流電源から供給、または交流電源に回生する電力の変動抑制を両立させる。【解決手段】電源１の交流電力を直流電力に変換する順変換器２と、直流電力を交流電力に変換する逆変換器４と、順変換器２と逆変換器４との間に設けた直流電力を充電および放電するコンデンサ３と、逆変換器４から交流電力を供給されて駆動または、逆変換器４と順変換器２を通して電源１に交流電力を回生する回転電機６とを備えるシステムにおいて、回転電機６を含む伝達系の振動周波数による軸振動成分を打ち消すためのトルク電流指令補正値を逆変換器４の電流制御部８４に出力する振動抑制制御部８３と、振動抑制制御部８３によって変動する電源１の交流電力を抑制するための補正値を、順変換器２の電圧制御部８９に出力する出力補償制御部８８とを備えることを特徴とする電力変換器用の制御装置８Ａを有する。【選択図】図１