Electric drive vehicle
First Claim
1. An electric drive vehicle comprising:
- a power generator coupled to an engine;
a first power converter connected with the power generator, for converting the AC power generated by the power generator to DC power;
a second power converter connected with the first power converter, for converting the DC power to AC power;
an electric motor connected with the second power converter;
at least one wheel driven by the electric motor; and
a power consuming device for consuming the DC power, connected to a DC circuit between the first and second power converters,wherein the electric drive vehicle has a first control mode in which the electric drive vehicle is driven by controlling the output of the electric motor and a second control mode in which the power consumption by the power consuming device is controlled, and the second control mode performs such control as to cause the power consuming device to consume the amount of power that corresponds to the power consumed by both the second power converter and the electric motor in the first control mode.
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Accused Products
Abstract
An electric drive vehicle having a power generator coupled to an engine, a first power converter connected with the power generator for converting the AC power generated by the power generator to DC power, a second power converter connected with the first power converter, for converting the DC power to AC power, a power consuming device for consuming the DC power, connected to a DC circuit between the first and second power converters, an electric motor connected with the second power converter, and at least one wheel driven by the electric motor, wherein the vehicle has a first control mode for controlling the output of the electric motor and a second control mode for controlling the power consumed by the power consuming device, and the second control mode performs such control that the operations of the second power converter and the electric motor in the first control mode are simulated.
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Citations
12 Claims
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1. An electric drive vehicle comprising:
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a power generator coupled to an engine; a first power converter connected with the power generator, for converting the AC power generated by the power generator to DC power; a second power converter connected with the first power converter, for converting the DC power to AC power; an electric motor connected with the second power converter; at least one wheel driven by the electric motor; and a power consuming device for consuming the DC power, connected to a DC circuit between the first and second power converters, wherein the electric drive vehicle has a first control mode in which the electric drive vehicle is driven by controlling the output of the electric motor and a second control mode in which the power consumption by the power consuming device is controlled, and the second control mode performs such control as to cause the power consuming device to consume the amount of power that corresponds to the power consumed by both the second power converter and the electric motor in the first control mode. - View Dependent Claims (2, 3, 4)
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5. An electric drive vehicle comprising:
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a power generator coupled to an engine; a first power converter connected with the power generator, for converting the AC power generated by the power generator to DC power; a second power converter connected with the first power converter, for converting the DC power to AC power; an electric motor connected with the second power converter; at least one wheel driven by the electric motor; a power consuming device for consuming the DC power, connected to a DC circuit between the first and second power converters; and a power command calculator, wherein the electric drive vehicle has a first control mode for controlling the output of the electric motor in accordance with the power command from the power command calculator and driving the electric drive vehicle, and a second control mode for controlling the power consumption by the power consuming device in accordance with the power command, are provided; and
the second control mode performs such control as to cause the power consuming device to consume the amount of power that corresponds to the power consumed by both the second power converter and the electric motor in the first control mode. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. An electric drive system comprising:
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an electric generator coupled to an engine; a first power converter connected with the electric generator, for converting the AC power delivered from the electric generator to DC power; a second power converter connected with the first power converter, for converting the DC power to AC power; an electric motor connected with the second power converter; and a power consuming device for consuming the DC power, connected to a DC circuit between the first and second power converters, the electric drive system having a function of performing a load test for the engine by controlling the power consumed by the power consuming device.
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Specification