Electrical motor power management system
First Claim
Patent Images
1. A power control system for an electric traction motor in a vehicle comprising:
- at least one inverter for providing conditioned electrical power to the electric traction motor;
a plurality of power stages for providing DC power to said at least one inverter, each stage including a battery and boost/buck DC—
DC converter, said power stages wired in parallel; and
wherein the power stages are controlled to maintain an output voltage to said at least one inverter.
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Accused Products
Abstract
A power control system for an electric traction motor in a vehicle comprising at least one inverter for providing conditioned electrical power to the electric traction motor, a plurality of power stages for providing DC power to the at least one inverter, each stage including a battery and boost/buck DC—DC converter, the power stages wired in parallel, and where the power stages are controlled to maintain an output voltage to the at least one inverter.
181 Citations
20 Claims
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1. A power control system for an electric traction motor in a vehicle comprising:
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at least one inverter for providing conditioned electrical power to the electric traction motor;
a plurality of power stages for providing DC power to said at least one inverter, each stage including a battery and boost/buck DC—
DC converter, said power stages wired in parallel; and
wherein the power stages are controlled to maintain an output voltage to said at least one inverter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle drive system:
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a plurality of power stages, each said power stage including a battery, and a boost/buck DC—
DC converter;
at least one motor inverter electrically coupled to said plurality of power stages for providing conditioned electrical power;
at least one electrical motor electrically coupled to said at least one motor inverter; and
wherein said plurality of power stages are individually current controlled and wherein said plurality of power stages are jointly controlled to regulate an output voltage. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of generating voltage for the operation of an electric motor in a vehicle comprising:
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providing a plurality of power stages connected in parallel, each power stage including a boost/buck DC—
DC converter and low voltage battery;
providing at least one motor inverter for generating conditioned electric power to the electric motor to actuate the electric motor;
sensing the current provided by each power stage;
controlling the current individually in each power stage; and
controlling the overall output voltage of the plurality of power stages wired in parallel. - View Dependent Claims (19, 20)
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Specification