Patent ID: 8963462
Filing Date: 2015-02-24
Classification: H02P

Abstract:
1. A driving apparatus for a multiplex-winding rotary machine, the driving apparatus comprising: a multiplex-winding rotary machine having a plurality of winding groups each including windings for a plurality of phases; rotational position detection means which detects the rotational position of the multiplex-winding rotary machine; failure determination means which determines whether or not the rotational position detection means has failed; control means which calculates a voltage instruction with respect to the plurality of winding groups, based on the rotational position detected by the rotational position detection means; and a plurality of voltage application means which apply voltage to the plurality of winding groups, based on the voltage instruction, wherein the control means, when the failure determination means has determined that the rotational position detection means has failed, outputs a voltage instruction for rotational position estimation to the voltage application means corresponding to at least one of the plurality of winding groups, and estimates the rotational position, based on at least one of voltage and current obtained from the winding group in accordance with the voltage instruction.