Cummins Inc.

Oliver Daniel Wilson

Akm Arafat

A multiphase motor control system and method of operation. Discloses embodiments comprise receiving multiphase reference commands, transforming the multiphase reference commands into corresponding reference symmetrical components, receiving feedback information representative of multiphase drive signals in a motor, transforming the feedback information into corresponding feedback symmetrical components, generating multiphase motor control symmetrical components based on the reference symmetrical components and the feedback symmetrical components, and transforming the multiphase motor control symmetrical components into corresponding multiphase motor drive control signals.

Symmetrical components domain control in a multiphase machine system

The present disclosure provides a debounced solid state switching device comprised of at least two insulated-gate bipolar transistors ('IGBTs') within a parallel architecture. Multiple pairs of IGBTs may be used in a parallel architecture to extend ampacity and improve voltage withstand capability. The device provides improved flexibility and portability to facilitate time and cost efficiency, as the size and complexity of the device is directly dependent on the needs of the user. Furthermore, the procurement of the components of the device is simple, providing greater accessibility.

Debounced solid state switching device

A method and system for bidirectional charging in an electric vehicle include controlling a multi-phase machine in the electric vehicle. In response to determining that a direction of energy flow is from an electric grid to the electric vehicle, the method and system include operating a first set of phases in the multi-phase machine at a grid frequency of the electric grid and connecting the first set of phases in the multi-phase machine to the electric grid. In response to connecting the first set of phases in the multi-phase machine to the electric grid, the method and system include operating a second set of phases in the multi-phase machine, where the second set of phases in the multi-phase machine generates energy via electrical coupling to the first set of phases in the multi-phase machine. The method and system also include providing the energy generated by the second set of phases in the multi-phase machine to charge an energy source of the electric vehicle.

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Fridley, MN, United States of America

Oliver Daniel Wilson