| CPC H02P 25/22 (2013.01) [H02P 25/184 (2013.01); H02P 2207/05 (2013.01)] | 20 Claims |
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1. An electric motor, comprising:
a rotor including a permanent magnet;
a stator including coils disposed circumferentially therearound;
first and second pairs of power input terminals for receiving direct current (DC) electrical power;
a first capacitor and a second capacitor; and
a plurality of switches selectively openable and closable so that each coil is operable between a first powered mode and a first regeneration mode, wherein, in the first powered mode, the coil is electrically coupled to the first pair of power input terminals, the first capacitor, or both the first pair of power input terminals and the first capacitor to allow transfer of electric power from at least one of the first pair of power input terminals and the first capacitor to the coil, and, in the first regeneration mode, the coil is electrically coupled to the first capacitor to allow transfer of energy stored in the coil to the first capacitor;
the plurality of switches being further selectively openable and closable so that each coil is operable between a second powered mode and a second regeneration mode, wherein, in the second powered mode, the coil is electrically coupled to the second pair of power input terminals, the second capacitor, or both the second pair of power input terminals and the second capacitor to allow transfer of energy from at least one of the second power input terminals and the second capacitor to the coil, and, in the second regeneration mode, the coil is electrically coupled to the second capacitor to allow transfer of energy stored in the coil to the second capacitor;
wherein the stator includes delta coils connected to each other in a delta configuration defining three edges and three vertices, and wye coils connected to each other in a wye configuration defining three branches each defining opposed proximal and distal ends, the proximal ends being substantially equipotentially electrically linked to each other.
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