CPC H02P 6/185 (2013.01) [H02P 6/08 (2013.01); H02P 6/17 (2016.02)] | 20 Claims |
1. A system comprising:
a direct current (DC) power source connected to an inverter circuit;
an electric motor comprising a rotor and a stator, wherein an output of the inverter circuit is connected to a plurality of phase windings attached to the stator; and
a controller configured to operate the electric motor and the inverter circuit, wherein the controller is further configured to:
determine one or more inactive phase windings from the plurality of phase windings;
supply a voltage to the one or more inactive phase windings;
receive, from a current sensor connected to the electric motor, a current for each inactive phase winding of the one or more inactive phase windings;
determine an inductance for each inactive phase winding of one or more the inactive phase winding based on the current; and
determine a position of the rotor in the electric motor based on the inductance for each inactive phase winding.
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