Controller of multiphase rotating electric machine
AssigneeDenso Corporation
InventorsTakashi Suzuki, Hiroyasu Otake
Life of this patent
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Abstract
A controller of a multiphase rotating electric machine has two inverters outputting an alternating current to two sets of windings, and a control section driving a motor by switching between a “two-system driving mode” supplying power from the two inverters to the two sets of winding and a “one-system driving mode” supplying power from one of the two inverters to the corresponding set of windings, The control section in the one-system driving mode changes at least one of a maximum amplitude and a current phase of the alternating current used in the two-system driving mode to compensate for a reluctance torque generated by a mutual inductance of the two sets of winding in the two-system driving mode.
Claims9
A controller for controlling a power supply of a multiphase rotating electric machine with two sets of windings to generate a total torque as a combination of a magnet torque and a reluctance torque, the controller comprising:
- a first power converter configured to supply an alternating current to a first set of windings, wherein the first power converter and the first set of windings are configured to operate together as a first system;
- a second power converter configured to supply an alternating current to a second set of windings, wherein the second power converter and the second set of windings are configured to operate together as a second system;
- and
- a control section configured to control the power supply to the multiphase rotating electric machine to drive the multiphase rotating electric machine in one of a
- a two-system driving mode, in which the first power converter supplies the alternating current to the first set of windings and the second power converter supplies the alternating to the second set of windings, and
- a one-system driving mode, in which one of the first power converter or the second power converter supplies the alternating current to the corresponding first set of windings or second set of windings, wherein
- the control section is further configured to change at least one of a maximum amplitude of the alternating current and a current phase of the alternating current when driving the multiphase rotating electric machine in the one-system driving mode.
Dependencies are inferred from the claim text.