Systems and methods for inverter and DC/DC converter operation
AssigneeSchneider Electric It Corporation
InventorsQinghong Yu, Jing Huang
Life of this patent
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Abstract
Examples of the disclosure include a power system comprising a power-system output configured to be coupled to, and provide an output AC waveform to, one or more loads, a positive DC bus, a negative DC bus, an inverter coupled to the positive DC bus and the negative DC bus, the inverter including an inverter output coupled to the power-system output, and a DC/DC converter coupled between the inverter output and at least one of the positive DC bus or the negative DC bus.
Claims21
A power system comprising:
- a power-system output configured to be coupled to, and provide an output AC waveform including a positive cycle and a negative cycle to, one or more loads;
- a positive DC bus;
- a negative DC bus;
- an inverter coupled to the positive DC bus and the negative DC bus, the inverter including an inverter output coupled to the power-system output;
- a DC/DC converter coupled between the inverter output and at least one of the positive DC bus or the negative DC bus;
- and
- at least one controller configured to control the inverter to provide the output AC waveform to the power-system output, and
- control the inverter to execute one or both of during the positive cycle of the output AC waveform, coupling the positive DC bus to the DC/DC converter and isolating the negative DC bus from the DC/DC converter, or
- during the negative cycle of the output AC waveform, coupling the negative DC bus to the DC/DC converter and isolating the positive DC bus from the DC/DC converter.
A non-transitory computer-readable medium storing thereon sequences of computer-executable instructions for controlling a power system including a positive DC bus, a negative DC bus, an output, an inverter including an inverter output, and a DC/DC converter coupled between the inverter output and at least one of the positive DC bus or the negative DC bus, the sequences of computer-executable instructions including instructions that instruct at least one processor to:
- control the inverter to provide an output AC waveform to the output;
- control, during a positive portion of the output AC waveform, the inverter to provide positive-voltage power to the DC/DC converter;
- and
- control, during a negative portion of the output AC waveform, the inverter to provide negative-voltage power to the DC/DC converter.
A method for controlling a power system including a positive DC bus, a negative DC bus, an output, an inverter including an inverter output, and a DC/DC converter coupled between the inverter output and at least one of the positive DC bus or the negative DC bus, the method comprising:
- providing, by the inverter, an output AC waveform to the output;
- providing, by the inverter during a positive portion of the output AC waveform, positive-voltage power to the DC/DC converter;
- and
- providing, by the inverter during a negative portion of the output AC waveform, negative-voltage power to the DC/DC converter.
Dependencies are inferred from the claim text.