Maximized Power in a Photovoltaic Distributed Power System
AssigneeSolaredge Technologies Ltd.
InventorsIlan Yoscovich, Ofir Bieber, Tzachi Glovinsky
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Abstract
A power harvesting system including multiple parallel-connected photovoltaic strings, each photovoltaic string includes a series-connection of photovoltaic panels. Multiple voltage-compensation circuits may be connected in series respectively with the photovoltaic strings. The voltage-compensation circuits may be configured to provide respective compensation voltages to the photovoltaic strings to maximize power harvested from the photovoltaic strings. The voltage-compensation circuits may be include respective inputs which may be connected to a source of power and respective outputs which may be connected in series with the photovoltaic strings.
Claims22
1-12. (canceled)
A system comprising:
- a plurality of photovoltaic modules;
- and
- a plurality of photovoltaic power devices,
- wherein one or more of the plurality of photovoltaic power devices is configured to receive input power at an input from at least one of the photovoltaic modules and is configured to output power from an output based on predetermined criteria, and
- wherein the input is directly connected to the output.
A method comprising:
- coupling inputs of a power converter to a photovoltaic module;
- connecting a first input of the inputs of the power converter to an output of the power converter via a conductor;
- and
- dividing a current output by the photovoltaic module into:
- a first portion that flows into the first input, and
- a second portion that flows directly from the first input to the output via the conductor.
A system comprising:
- a plurality of parallel-connected compensated photovoltaic strings, each compensated photovoltaic string including:
- a photovoltaic string having a series-connection of photovoltaic cells;
- and
- a voltage-compensation circuit having a voltage output connected in series with the photovoltaic string, wherein the voltage-compensation circuit includes an input connected to a source of power separate from power provided by the photovoltaic string, wherein the voltage-compensation circuit is configured to provide at the voltage output an adjustable compensation voltage in series with a voltage generated by the photovoltaic string, wherein the adjustable compensation voltage is configurable as a positive or a negative voltage with respect to the voltage generated by the photovoltaic string.
A method comprising:
- monitoring a parameter associated with a photovoltaic string;
- receiving, by a voltage-compensation circuit, a source of power separate from power provided by photovoltaic cells within the photovoltaic string;
- generating, by the voltage-compensation circuit and from the source of power, a compensation voltage based on the monitored parameter, wherein the compensation voltage is configurable as a positive or a negative voltage with respect to a photovoltaic voltage generated by the photovoltaic string;
- and
- adding serially the compensation voltage with the photovoltaic voltage generated by the photovoltaic string.
Dependencies are inferred from the claim text.