System and method of commonly controlling power converters
First Claim
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1. A power system for controlling power transfers to an electric machine, comprising:
- a power system electronic housing including three phase terminals for coupling to the electric machine;
an alternating current/direct current (AC/DC) power converter disposed within the power system electronic housing and operable to convert alternating current (AC) power received from the electric machine into direct current (DC) power when the electric machine is operating as a generator, and operable to convert received DC power from at least one DC power source into AC power when the electric machine is operating as a motor;
at least one direct current/direct current (DC/DC) power converter disposed within the power system electronic housing and operable to convert a low DC voltage to a high DC voltage;
a multi-converter system controller disposed within the power system electronic housing and operable to control the AC/DC power converter and the DC/DC power converter.
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Abstract
A system and method for controlling power converters are disclosed. Briefly described, one embodiment is a method comprising communicating at least one first control signal to an alternating current/direct current (AC/DC) power converter from a multi-converter system controller, the AC/DC power converter and the multi-converter system controller residing in a power system electronics housing, and communicating at least one second control signal to a direct current/direct current (DC/DC) power converter from the multi-converter system controller, the DC/DC power converter residing in a power system electronics housing.
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Citations
24 Claims
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1. A power system for controlling power transfers to an electric machine, comprising:
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a power system electronic housing including three phase terminals for coupling to the electric machine; an alternating current/direct current (AC/DC) power converter disposed within the power system electronic housing and operable to convert alternating current (AC) power received from the electric machine into direct current (DC) power when the electric machine is operating as a generator, and operable to convert received DC power from at least one DC power source into AC power when the electric machine is operating as a motor; at least one direct current/direct current (DC/DC) power converter disposed within the power system electronic housing and operable to convert a low DC voltage to a high DC voltage; a multi-converter system controller disposed within the power system electronic housing and operable to control the AC/DC power converter and the DC/DC power converter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling power converters, the method comprising:
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coupling an electric machine to three phrase terminals supported within a power system electronics housing; communicating at least one first control signal to an alternating current/direct current (AC/DC) power converter from a multi-converter system controller, the AC/DC power converter and the multi-converter system controller residing in the power system electronics housing; communicating at least one second control signal to a direct current/direct current (DC/DC) power converter from the multi-converter system controller, the DC/DC power converter residing in the power system electronics housing; converting alternating current (AC) power generated by the electric motorinto direct current (DC) power by the AC/DC power converter in accordance with the received first control signal; transferring the DC power from the AC/DC power converter to the DC/DC power converter over a high voltage DC bus, where the high voltage DC bus is disposed within the power system electronics housing; and converting received DC power from a high DC voltage to a low DC voltage in accordance with the received second control signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A processor-readable medium storing instructions for causing a processor to control power transfers by:
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determining at least one first control signal that is communicated to an alternating current/direct current (AC/DC) power converter from a multi-converter system controller, the AC/DC power converter and the multi-converter system controller residing in a power system electronics housing; determining at least one second control signal that is communicated to a direct current/direct current (DC/DC) power converter from the multi-converter system controller, the DC/DC power converter residing in the power system electronics housing; and determining at least one third control signal that is communicated to a discharge resistor to control voltage across a high voltage DC bus within the power system electronics housing and coupled between the AC/DC power converter an the DC/DC power converter. - View Dependent Claims (18)
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19. A modular power system that controls power transfers between an electric machine and at least one direct current (DC) power source, comprising:
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a power system electronics housing; an alternating current/direct current (AC/DC) power converter residing in the power system electronics housing, operable to convert alternating current (AC) power received from the electric machine into DC power when the electric machine is operating as a generator, and operable to convert received DC power from the DC power source into AC power when the electric machine is operating as a motor; at least one direct current/direct current (DC/DC) power converter residing in the power system electronics housing, and operable to convert a low DC voltage to a high DC voltage; a multi-converter system controller residing in the power system electronics housing, operable to control the AC/DC power converter by communicating at least one first control signal to the AC/DC power converter, and operable to control the DC/DC power converter by communicating at least one second control signal to the AC/DC power converter a high voltage (HV) DC bus residing in the power system electronics housing, the HVDC bus coupling the AC/DC power converter and the DC/DC power converter; and a switchable discharge resistor coupled to the HVDC bus and operable to discharge the HVDC bus when actuated by the multi-converter system controller. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification