Systems for Highly Efficient Solar Power Conversion
First Claim
1. A highly efficient method of series string solar energy power conversion comprising the steps of:
- establishing a plurality of solar energy sources, each providing a DC photovoltaic output;
creating a plurality of high voltage highly varying DC photovoltaic outputs from said plurality of solar energy sources;
individually establishing each of said high voltage, highly varying DC photovoltaic outputs as an individual DC photovoltaic input to a plurality of individual high efficiency switchmode photovoltaic DC-DC converters;
individually high efficiency conversion duty cycle controlling operation of a plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters;
photovoltaic boundary condition controlling said plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters;
maximum photovoltaic power point controlling said plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters slaved to said step of photovoltaic boundary condition controlling said plurality of switch elements;
feeding each of said high voltage, highly varying DC photovoltaic outputs through a photovoltaic voltage increase modality of photovoltaic DC-DC power conversion;
feeding each of said high voltage, highly varying DC photovoltaic outputs through a photovoltaic voltage decrease modality of photovoltaic DC-DC power conversion responsive to said photovoltaic voltage increase modality of photovoltaic DC-DC power conversion;
slavedly individual panel dedicated maximum photovoltaic power point DC-DC converting each of said high voltage, highly varying DC photovoltaic outputs;
boundary condition DC-DC converting said high voltage, highly varying DC photovoltaic outputs;
individually substantially power isomorphically converting each said high voltage, highly varying DC photovoltaic outputs into a plurality of converted DC photovoltaic outputs while accomplishing said step of individual dedicated maximum photovoltaic power point converting said DC photovoltaic input from each of said plurality of solar panels;
serially connecting said plurality of converted DC photovoltaic outputs to create a combined higher voltage converted DC photovoltaic output from said plurality of solar panels;
establishing said combined higher voltage converted DC photovoltaic output as a converted DC photovoltaic input to a high voltage, high power photovoltaic DC-AC inverter; and
inverting said converted DC photovoltaic input into a high power inverted AC photovoltaic output.
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Accused Products
Abstract
A high efficiency photovoltaic DC-DC converter achieves solar power conversion from high voltage, highly varying photovoltaic power sources to harvest maximum power from a solar source or strings of panels for DC or AC use, perhaps for transfer to a power grid at high power levels with coordinated control possible for various elements. Photovoltaic DC-DC converters can achieve efficiencies in conversion that are extraordinarily high compared to traditional through substantially power isomorphic photovoltaic DC-DC power conversion capability that can achieve 97%, 98%, 99.2% efficiency, or even only wire transmission losses. Switchmode impedance or voltage conversion circuit embodiments may have pairs of photovoltaic power interrupt switch elements and pairs of photovoltaic power shunt switch elements to first increase voltage and then decrease voltage as part of the desired photovoltaic DC-DC power conversion.
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Citations
20 Claims
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1. A highly efficient method of series string solar energy power conversion comprising the steps of:
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establishing a plurality of solar energy sources, each providing a DC photovoltaic output; creating a plurality of high voltage highly varying DC photovoltaic outputs from said plurality of solar energy sources; individually establishing each of said high voltage, highly varying DC photovoltaic outputs as an individual DC photovoltaic input to a plurality of individual high efficiency switchmode photovoltaic DC-DC converters; individually high efficiency conversion duty cycle controlling operation of a plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters; photovoltaic boundary condition controlling said plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters; maximum photovoltaic power point controlling said plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters slaved to said step of photovoltaic boundary condition controlling said plurality of switch elements; feeding each of said high voltage, highly varying DC photovoltaic outputs through a photovoltaic voltage increase modality of photovoltaic DC-DC power conversion; feeding each of said high voltage, highly varying DC photovoltaic outputs through a photovoltaic voltage decrease modality of photovoltaic DC-DC power conversion responsive to said photovoltaic voltage increase modality of photovoltaic DC-DC power conversion; slavedly individual panel dedicated maximum photovoltaic power point DC-DC converting each of said high voltage, highly varying DC photovoltaic outputs; boundary condition DC-DC converting said high voltage, highly varying DC photovoltaic outputs; individually substantially power isomorphically converting each said high voltage, highly varying DC photovoltaic outputs into a plurality of converted DC photovoltaic outputs while accomplishing said step of individual dedicated maximum photovoltaic power point converting said DC photovoltaic input from each of said plurality of solar panels; serially connecting said plurality of converted DC photovoltaic outputs to create a combined higher voltage converted DC photovoltaic output from said plurality of solar panels; establishing said combined higher voltage converted DC photovoltaic output as a converted DC photovoltaic input to a high voltage, high power photovoltaic DC-AC inverter; and inverting said converted DC photovoltaic input into a high power inverted AC photovoltaic output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A highly efficient method of series string solar energy power conversion comprising the steps of:
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establishing a plurality of solar energy sources, each providing a DC photovoltaic output; creating a plurality of high voltage highly varying DC photovoltaic outputs from said plurality of solar energy sources; individually establishing each of said high voltage, highly varying DC photovoltaic outputs as an individual DC photovoltaic input to a plurality of individual high efficiency switchmode photovoltaic DC-DC converters; individually high efficiency conversion duty cycle controlling operation of a plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters; maximum photovoltaic power point controlling said plurality of switch elements within each of said individual high efficiency switchmode photovoltaic DC-DC converters; feeding each of said high voltage, highly varying DC photovoltaic outputs through a photovoltaic voltage increase modality of photovoltaic DC-DC power conversion; feeding each of said high voltage, highly varying DC photovoltaic outputs through a photovoltaic voltage decrease modality of photovoltaic DC-DC power conversion responsive to said photovoltaic voltage increase modality of photovoltaic DC-DC power conversion; individual panel dedicated maximum photovoltaic power point DC-DC converting each of said high voltage, highly varying DC photovoltaic outputs; individually substantially power isomorphically converting each said high voltage, highly varying DC photovoltaic outputs into a plurality of converted DC photovoltaic outputs while accomplishing said step of individual dedicated maximum photovoltaic power point converting said DC photovoltaic input from each of said plurality of solar panels; serially connecting said plurality of converted DC photovoltaic outputs to create a combined higher voltage converted DC photovoltaic output from said plurality of solar panels; establishing said combined higher voltage converted DC photovoltaic output as a converted DC photovoltaic input to a traditional high voltage, high power photovoltaic DC-AC inverter; and traditionally inverting said converted DC photovoltaic input into a high power inverted AC photovoltaic output. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification