Voltage modulation for controlling a motor
AssigneeInfineon Technologies AG
InventorsBenjamin Jahn, Stanislav Gerber, Bastian Schindler, Michael Brückner
Life of this patent
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Abstract
A circuit for controlling a motor that includes control circuitry configured to generate, for a phase of the motor, a switching signal indicating to couple the phase to a first terminal of a supply for an entire portion of each switching cycle of a first plurality of switching cycles corresponding to a first range of electrical angles for the rotor and to couple the phase to a second terminal of the supply for a portion of each switching cycle of a second plurality of switching cycles corresponding to a second range of electrical angles for the rotor. The control circuitry is further configured to control the motor based on the switching signal.
Claims21
A circuit for controlling a motor, the circuit comprising:
- driver circuitry configured to drive the motor based on a switching signal;
- and
- control circuitry comprising one or more processors configured to:
- generate, for a phase of the motor, a switching signal indicating to couple the phase to a first terminal of a supply for an entire portion of each switching cycle of a first plurality of switching cycles corresponding to a first range of electrical angles for the rotor and to couple the phase to a second terminal of the supply for a portion of each switching cycle of a second plurality of switching cycles corresponding to a second range of electrical angles for the rotor;
- and
- output, to the driver circuitry, the switching signal, wherein the driver circuitry is configured to control the motor based on the switching signal.
A method comprising:
- generating for a phase of the motor, a switching signal indicating to couple the phase to a first terminal of a supply for an entire portion of each switching cycle of a first plurality of switching cycles corresponding to a first range of electrical angles for the rotor and to couple the phase to a second terminal of the supply for a portion of each switching cycle of a second plurality of switching cycles corresponding to a second range of electrical angles for the rotor;
- and
- controlling the motor based on the switching signal.
A system comprising:
- a motor;
- driver circuitry configured to drive the motor based on a switching signal;
- and
- control circuitry comprising one or more processors configured to:
- generate, for a phase of the motor, the switching signal to indicate to couple the phase to a first terminal of a supply for an entire portion of each switching cycle of a first plurality of switching cycles corresponding to a first range of electrical angles for the rotor and to couple the phase to a second terminal of the supply for a portion of each switching cycle of a second plurality of switching cycles corresponding to a second range of electrical angles for the rotor;
- and
- output, to the driver circuitry, the switching signal.
Dependencies are inferred from the claim text.