ELECTRICAL SYSTEM FOR PULSE-WIDTH MODULATED CONTROL OF A POWER INVERTER USING PHASE-SHIFTED CARRIER SIGNALS AND RELATED OPERATING METHODS
First Claim
1. An electrical system for use in a vehicle, the electrical system comprising:
- an energy source;
a motor having a first set of windings and a second set of windings, the first set of windings being electrically isolated from the second set of windings;
an inverter module coupled between the energy source and the motor, the inverter module comprising;
a first set of phase legs coupled to the first set of windings; and
a second set of phase legs coupled to the second set of windings; and
a controller coupled to the inverter module, the controller being configured to achieve a desired power flow between the energy source and the motor by;
modulating the first set of phase legs using a first carrier signal; and
modulating the second set of phase legs using a second carrier signal, the second carrier signal being phase-shifted relative to the first carrier signal.
13 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods are provided for pulse-width modulated control of power inverter using phase-shifted carrier signals. An electrical system comprises an energy source and a motor. The motor has a first set of windings and a second set of windings, which are electrically isolated from each other. An inverter module is coupled between the energy source and the motor and comprises a first set of phase legs coupled to the first set of windings and a second set of phase legs coupled to the second set of windings. A controller is coupled to the inverter module and is configured to achieve a desired power flow between the energy source and the motor by modulating the first set of phase legs using a first carrier signal and modulating the second set of phase legs using a second carrier signal. The second carrier signal is phase-shifted relative to the first carrier signal.
50 Citations
20 Claims
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1. An electrical system for use in a vehicle, the electrical system comprising:
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an energy source; a motor having a first set of windings and a second set of windings, the first set of windings being electrically isolated from the second set of windings; an inverter module coupled between the energy source and the motor, the inverter module comprising; a first set of phase legs coupled to the first set of windings; and a second set of phase legs coupled to the second set of windings; and a controller coupled to the inverter module, the controller being configured to achieve a desired power flow between the energy source and the motor by; modulating the first set of phase legs using a first carrier signal; and modulating the second set of phase legs using a second carrier signal, the second carrier signal being phase-shifted relative to the first carrier signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An automotive drive system comprising:
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an energy source; an electric motor comprising a first winding and a second winding, the first winding and the second winding being electrically isolated, wherein the first winding and the second winding each correspond to a first phase of the electric motor; an inverter module coupled to the energy source, the inverter module comprising; a first phase leg coupled to the first winding; and a second phase leg coupled to the second winding; and a controller coupled to the inverter module, the controller being configured to; modulate the first phase leg using a first carrier; and modulate the second phase leg using a second carrier, the second carrier being phase-shifted relative to the first carrier. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for operating an inverter module for an electric motor, the electric motor having a first set of windings coupled to a first set of phase legs of the inverter module and a second set of windings coupled to a second set of phase legs of the inverter module, the method comprising:
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modulating the first set of phase legs using a first carrier signal; and modulating the second set of phase legs using a second carrier signal, the second carrier signal having a phase shift relative to the first carrier signal. - View Dependent Claims (18, 19, 20)
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Specification