Dc/dc converter for distributed storage and solar systems
AssigneeNextracker LLC
InventorYang Liu
Life of this patent
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Abstract
A multi-power distributed storage system including a first power source; a second power source electrically connected to a common bus with the first power source; a single input port inverter electrically connected to the common bus. The system including a controller configured to communicate with at least the second power source, and the single input port inverter. The second power source including a plurality of battery banks and a plurality of bi-directional DC/DC converters configured to charge and discharge the plurality of battery banks and provide DC to the single input port inverter.
Claims1
A method for implementing a multi-power distributed power storage and generation system comprising:
- feeding a single input port inverter an output voltage from a solar power plant and a DC storage plant via a common bus, the DC storage plant including a plurality of bi-directional DC/DC converters configured to charge and discharge a plurality of battery banks;
- maintaining constant power output of the DC storage plant in an MPPT region of the solar power plant for a given load using the power droop method;
- ramping down an output power of the DC/DC converters when a bus voltage is higher than the MPPT region;
- ramping up an output power of the DC/DC converters when a bus voltage is higher than the MPPT region;
- and
- maintaining maximum power output of the solar power plant;
- wherein the ramping up and ramping down of an output power is achieved, at least initially, without active control of the DC/DC converters.
Dependencies are inferred from the claim text.