2019-02-262019-02-262018-03-13http://hdl.handle.net/10919/87834Switches of a switching circuit used to control operation of an electric motor such as in an electrically powered vehicle connect respective windings of the electric motor as a single phase inductor during battery charging. The inductor can then store inherent low frequency, second order ripple power and return that power to a load presented by a battery during battery charging to deliver substantially constant current. Storage of ripple power in the inductor allows the capacitance value, size, weight and cost of a filter capacitor of a power factor correction circuit providing input power to a battery charger to be reduced by an order of magnitude or more. Direction of current flow through the inductor is periodically reversed to avoid magnetizing the motor.application/pdfenPatenthttp://pimg-fpiw.uspto.gov/fdd/62/143/099/0.pdf14139059B60L11/1803B60L11/1812B60L2210/14B60L2220/54B60L2240/526B60L2240/527B60L2240/529H02M1/14H02M1/4225H02M7/5387Y02T10/641Y02T10/7005Y02T10/7072Y02T10/7225Y02T90/127Y02T90/149914362