| 摘要 |
PROBLEM TO BE SOLVED: To obtain a highly reliable power supply harmonics suppressor having enhanced suppression capability. SOLUTION: The power supply harmonics suppressor comprises means for detecting the phase of power supply voltage, means for operating a compensation output command value at each period in the same phase, means for operating the error between the compensation output command and an actual compensation output at each phase, means for integrating the error for a specified time after starting operation of the harmonics suppressor at each phase and storing the integrated error, means for operating the control amount of compensation output from the integrated error, and means for outputting a control signal for the main circuit of the harmonics suppressor based on the control amount, wherein a control circuit for the harmonics suppressor performs on/off control of switching elements in the main circuit of the harmonics suppressor based on the control signal. |
