Rebalancing pulse width modulation signals for power systems
AssigneeCummins Power Generation Inc.
InventorsOliver Daniel Wilson, Denise Maria Christine Athaide
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Abstract
Presented herein are systems, devices, and methods of rebalancing pulse width modulation (PWM) signals. A device can receive a plurality of PWM signals to be provided to a plurality of legs of an inverter. The device can identify a minimum value and a maximum value from at least a subset of the plurality of PWM signals. The device can determine a rebalance value based on a spread between the minimum value and the maximum value. The device can modify, using the rebalance value, a first PWM signal of the plurality of PWM signals to generate a second PWM signal to provide to a leg of the plurality of the legs of the inverter.
Claims20
A device for rebalancing pulse width modulation (PWM) signals, comprising:
- a computer-readable medium having instructions stored thereon;
- and
- at least one processor configured to execute the instructions to:
- receive a plurality of PWM signals to be provided to a plurality of legs of an inverter;
- identify a minimum value and a maximum value from at least a subset of the plurality of PWM signals;
- determine a rebalance value based on a spread between the minimum value and the maximum value;
- and
- modify, using the rebalance value, a first PWM signal of the plurality of PWM signals to generate a second PWM signal to provide to a leg of the plurality of the legs of the inverter.
A system for providing electrical power using pulse width modulation (PWM) signals, comprising:
- a power source configured to provide electrical power;
- a controller structured to be coupled with the power generator, the controller configured to convert the electrical power to a first plurality of PWM signals;
- a power inverter structured to be coupled with the controller, the power inverter comprising a plurality of legs to receive a second plurality of PWM signals;
- and
- a signal rebalancer structured to be coupled with the controller and the power inverter, the signal rebalancer configured to:
- receive the first plurality of PWM signals from the controller;
- identify a minimum value and a maximum value from at least a subset of the first plurality of PWM signals;
- calculate a rebalance value based on a spread between the minimum value and the maximum value;
- adjust, using the rebalance value, the first plurality of PWM signals to generate the second plurality of PWM signals;
- and
- provide the second plurality of PWM signals to the plurality of legs of the power inverter.
A method of rebalancing pulse width modulation (PWM) signals, comprising:
- receiving, by a processor, a plurality of PWM signals to be provided to a plurality of legs of an inverter;
- determining, by the processor, a spread between a minimum value and a maximum value from at least a subset of the plurality of PWM signals;
- generating, by the processor, a rebalance value based on the spread between the minimum value and the maximum value;
- modifying, by the processor, using the rebalance value, at least one PWM signal of the plurality of PWM signals;
- and
- providing, by the processor, the at least one PWM signal to a leg of the plurality of the legs of the inverter.
Dependencies are inferred from the claim text.