| 摘要 |
PROBLEM TO BE SOLVED: To reduce a current leaked from a compressor with less power loss in a power conversion device in which the compressor is used as a load.SOLUTION: In a power conversion device, there is provided a compensation current output part (80) which flows a compensation current (Ic) compensating a leakage current (Ia) therethrough. A control part 50 switches the compensation current output part (80) from operation to stopping when detection signals of a rotation speed sensor (55) for detecting the number of revolutions of a compressor (CM) are received, and the number of revolutions, in a state where the compensation current output part (80) is not operated, the number of revolutions is increased to the set number of revolutions in which the leakage current (Ia) becomes equal to or lower than the limit value (for example, the limit value specified by the Electrical Appliances and Material Safety Act or IEC) (Lmax).SELECTED DRAWING: Figure 1 |
