| 摘要 |
PROBLEM TO BE SOLVED: To provide a control apparatus which is simple and inexpensive and which can suppress the abnormal vibration in motor current. SOLUTION: An inverter which drives a motor compressor is constituted in such a way that it is provided with a voltage detection pat which detects the DC voltage of an inverter main circuit, that it judges the vibration of a motor current on the basis of a change in a detected voltage and that it changes an output voltage so as to suppress the vibration of the motor current. Since this suppression apparatus does not use a comparatively high-cost current detector, it is low-cost, it judges a change in the motor current on the basis of the change in the detected voltage value, it changes an output current, and it can suppress the oscillation in motor current. |
