Electric drive system having DC bus voltage control
First Claim
1. An electric drive system, comprising:
- a power source;
a generator operatively connected to the power source and configured to produce a power output;
at least one capacitor configured to store a supply of power;
a common bus configured to direct the power output to the capacitor;
at least one motor configured to receive power from the common bus; and
a controller in communication with the at least one motor and the generator, the controller configured to receive at least one input associated with the motor, to determine a requested motor power as a function of the at least one input, and to operate the generator to produce the requested motor power.
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Accused Products
Abstract
An electric drive system has a power source and a generator operatively connected to the power source. The generator is configured to produce a power output. The electric drive system also has at least one capacitor configured to store a supply of power. The electric drive system further has a common bus configured to direct the power output to the capacitor. The electric drive system also has at least one motor configured to receive power from the common bus. The electric drive system additionally has a controller in communication with the at least one motor and the generator. The controller is configured to receive at least one input associated with the motor, to determine a requested motor power as a function of the at least one input, and to operate the generator to produce the requested motor power.
95 Citations
25 Claims
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1. An electric drive system, comprising:
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a power source;
a generator operatively connected to the power source and configured to produce a power output;
at least one capacitor configured to store a supply of power;
a common bus configured to direct the power output to the capacitor;
at least one motor configured to receive power from the common bus; and
a controller in communication with the at least one motor and the generator, the controller configured to receive at least one input associated with the motor, to determine a requested motor power as a function of the at least one input, and to operate the generator to produce the requested motor power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating an electric drive, comprising:
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operating a power source connected to a generator to produce a power output;
storing power within at least one capacitor connected to the generator via a common bus;
directing power from the common bus to at least one motor;
receiving at least one input associated with the at least one motor;
determining a requested motor power as a function of the at least one input; and
operating the generator to produce the requested motor power. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A work machine, comprising:
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a housing;
at least one traction device configured to support the housing;
an electric drive system, including;
a power source;
a generator operatively connected to the power source and configured to produce a power output;
at least one capacitor configured to store a supply of power;
a common bus configured to direct the power output to the capacitor;
at least one motor configured to receive power from the common bus and to drive the at least one traction device; and
a controller in communication with the at least one motor and the generator, the controller configured to receive at least one input associated with the motor, to determine a requested motor power as a function of the at least one input, and to operate the generator to produce the requested motor power. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification