Electric machines with efficient torque transitions
AssigneeTula eTechnology, Inc.
InventorsPaul Carvell, Amnish Singh, Tate Allen Cooper
Life of this patent
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Abstract
An electric machine is provided. A polyphase machine is provided. A power inverter is electrically connected to the polyphase machine. A controller is electrically connected to the power inverter, wherein the controller provides switching signals to the power inverter, wherein the controller comprises a trajectory calculator that provides an optimized trajectory for transitioning the polyphase machine from a first torque to a second torque.
Claims20
An electric machine, comprising:
- a polyphase machine;
- a power inverter electrically connected to the polyphase machine;
- and
- a controller electrically connected to the power inverter, wherein the controller receives a user torque command request for the polyphase machine to transition from a first torque to a second torque and wherein the controller provides switching signals to the power inverter, wherein the controller comprises a trajectory calculator that provides an optimized trajectory for transitioning the polyphase machine from the first torque to the second torque.
An electric machine, comprising:
- a polyphase machine;
- a power inverter electrically connected to the polyphase machine;
- a controller electrically connected to the power inverter, wherein the controller provides switching signals to the power inverter, wherein the controller comprises a trajectory calculator that provides an optimized trajectory for transitioning the polyphase machine from a first torque to a second torque;
- and
- a pulsed torque controller connected to the controller that provides pulsed torque signals to the controller.
A method for transitioning a polyphase machine from a first torque level to a second torque level, where the polyphase machine is controlled by a controller, comprising:
- receiving a user torque command request for the polyphase machine to transition from a first torque to a second torque;
- and
- providing an optimized trajectory from the controller to the polyphase machine, wherein the optimized trajectory provides an optimized trajectory for transitioning the polyphase machine from the first torque level to the second torque level.
A method for transitioning a polyphase machine from a first torque level to a second torque level, where the polyphase machine is controlled by a controller, comprising:
- providing an optimized trajectory from the controller to the polyphase machine, wherein the optimized trajectory provides an optimized trajectory for transitioning the polyphase machine from the first torque level to the second torque level, wherein the controller provides a series of voltages to the polyphase machine in order to provide the optimized trajectory, wherein the controller further provides a vector voltage angle.
A method for transitioning a polyphase machine from a first torque level to a second torque level, where the polyphase machine is controlled by a controller, comprising:
- providing an optimized trajectory from the controller to the polyphase machine, wherein the optimized trajectory provides an optimized trajectory for transitioning the polyphase machine from the first torque level to the second torque level;
- and
- providing pulsed torque signals to provide a pulsed periodic torque operation between a first torque level and a second torque level, wherein the pulsed periodic torque operation has a period of less than one second.
Dependencies are inferred from the claim text.