| 摘要 |
PROBLEM TO BE SOLVED: To accurately determine whether there are any anomalies in current detection sections connected to an output side of an inverter.SOLUTION: An MPU 42 functioning as a desired value setting section 42a sets desired current values that are desired values of a motor current Im to be applied to a compressor motor M12. A driving voltage output section 35 generates driving voltages SU-SW to be output to the compressor motor M12 on the basis of the desired current values. Current detection sections 38a, 38b are connected to an output side of the driving voltage output section 35 to detect the motor current Im applied to the compressor motor M12. The MPU 42 functioning as an anomaly determination section 42b compares the detection results of the current detection sections 38a, 38b with the desired current values, respectively, and determines whether there are any anomalies in the current detection sections 38a, 38b on the basis of the comparison results. More specifically, if the desired current value is smaller than a predetermined desired value, the anomaly determination section 42b stops determining whether there are any anomalies in each current detection section 38a, 38b. |
