| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and a device for detecting and identifying a failure in a plurality of BLDC three-phase motors that operate by a single inverter. <P>SOLUTION: In the method and device for detecting a failure in a plurality of BLDC three-phase DC motors by a single inverter, one phase of one unit in the motors is coupled in series with each of current sensors less in number by one than the motors, and two phases different from the one phase of all the residual motors are coupled independently to each sensor. Whether there is a failed motor or not is determined and the failed motor is identified by switching of the output of the inverter and a difference in the output, such as positive, negative or zero current value of each phase. <P>COPYRIGHT: (C)2011,JPO&INPIT |
