To miniaturize a motor driving device which simultaneously vector-controls a plurality of motors.
A rotary drum driving motor (first motor) 4A and a heat pump compressor motor (second motor) 4B are controlled by a first current detecting means which detects a motor current or a second current detecting means, and a controlling means 6 through a first inverter circuit 3A and a second inverter circuit 3B. In this case, the rotary drum driving motor (first motor) 4A converts a DC power into an AC power by a plurality of inverter circuits consisting of the first inverter circuit 3A and the second inverter circuit 3B. The current detecting means which is constituted of a plurality of shunt resistors and a current signal amplifying means is integrated as a current detecting module, and is arranged to be proximal to the inverter circuits. Thus, the current detection with a high precision becomes possible, and the driving device can be made compact.
COPYRIGHT: (C)2008,JPO&INPIT
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