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US 12,671,347 B2Granted
Solar inverter with multiple dynamic current sources
AssigneeNorth Carolina State University
InventorWensong Yu
Life of this patent
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Abstract
Various examples are provided related to photovoltaic systems that utilize multiple current source inverters. In one example, a solar inverter system includes DC-DC current source converters coupled to a DC link and a grid-frequency inverter coupled to the DC link. The DC power can be converted from energy obtained from a photovoltaic (PV) panel coupled to the DC-DC current source converters and the grid-frequency inverter can generate AC power from the DC power provided to the DC link.
Claims15
A solar inverter system, comprising:
- a plurality of DC-DC current source converters coupled to a DC link, each DC-DC current source converter configured to provide DC power to the DC link, the DC power converted from energy obtained from at least one photovoltaic (PV) panel coupled to the plurality of DC-DC current source converters, where an individual DC-DC converter of the plurality of DC-DC current source converters comprises hybrid switches each having a Si-IGBT switch in parallel with a SiC-MOSFET switch, wherein switching of the hybrid switches in the individual DC-DC converter is controlled based at least in part upon comparison of an on-state voltage of the individual DC-DC converter to a first defined voltage level associated with the SiC-MOSFET switch and comparison of the on-state voltage to a second defined voltage level associated with the Si-IGBT switch;
- and
- a grid-frequency inverter coupled to the DC link, the grid-frequency inverter configured to generate AC power from the DC power provided to the DC link.
Dependencies are inferred from the claim text.