| 摘要 |
PROBLEM TO BE SOLVED: To provide a power converter which can stably and highly reliably supply electric power to a load by suppressing a high-order higher harmonic circulating current between inverters flowing from the capacitor of an AC filter, while maintaining the high-speed voltage control response of the converter. SOLUTION: A power converter takes out a current having a resonance frequency component from the output current of an inverter by means of a band-pass filter 15 (15a or 15b) which is matched to the resonance frequency of the inductance of wiring connecting the capacitor of an AC filter to a power source, and corrects reversely the output of the voltage control circuit 16 (16a or 16b) of the inverter, so that the output of the converter is suppressed. Therefore, the vibration of an LC resonance current caused by the reactance amount and capacitor amount of the wiring can be converged forcibly. |
