Patent ID: 9099954
Filing Date: 2015-08-04
Classification: H02P

Abstract:
1. A method of controlling a motor to enforce a zero voltage loop using a controller and a converter circuit, the method comprising the steps of: determining one of a switching period, a fundamental cycle, and a current target threshold per phase leg of the motor having at least one high voltage transition point; determining applicability of the zero voltage loop; determining a dwell period to be enforced at the transition point between an engagement of a first switch of the phase leg of the converter circuit and an engagement of a second switch of the phase leg of the converter circuit, each of the first switch and the second switch being selectively engageable between a first state and a second state; engaging the first switch from the first state to the second state at the transition point; and engaging the second switch from the first state to the second state after the transition point and upon expiration of the dwell period when the zero voltage loop is applicable.