ELECTRIC DRIVE WITH RECONFIGURABLE WINDING

摘要

An electric drive system for a PM electric machine, where the machine includes a stator, a rotor and an inverter. Each phase of the machine includes a stator winding separated into a first winding section and a second winding section and two switches in the inverter electrically coupled to the winding sections. The drive system includes a switch assembly for each phase electrically coupled to the inverter switches and the first and second winding sections, where the switch assembly includes at least two switch states. A first switch state of the switch assembly electrically couples the first winding section and the second winding section in series to the inverter switches and a second switch state electrically couples the second winding section to the inverter switches and electrically disconnects the first winding section from the inverter switches.

主权项

1. A drive system for a permanent magnet (PM) electric machine, said machine including a stator, a rotor and an inverter, said drive system comprising:
at least one stator winding in the stator including a first winding section and a second winding section; at least two inverter switches in the inverter electrically coupled to the first and second winding sections; and a switch assembly electrically coupled to the inverter switches and the first and second winding sections, said switch assembly including at least two switch states where a first switch state electrical couples the first winding section and the second winding section in series to the inverter switches and a second switch state electrically couples the second winding section to the inverter switches and electrically disconnects the first winding section from the inverter switches.