| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply regenerative converter which is capable of restraining fluctuations in the DC output voltage of the power supply regenerative converter at the time of regenerative operation, as well as fluctuations in the torque of the motor caused by it. SOLUTION: This inverter includes a voltage detector 39 for detecting the DC voltage of an inverter 40 on input side and outputting DC voltage information, a current detector 37 for detecting current on commercial power supply side, a power voltage phase detector 32 for detecting phase on a commercial power supply side, and a power running/regenerative determining part 11 for determining which of the power running or regenerative running should be conducted, based on the detection results from the respective detectors. |
