Distributed energy storage and power quality control in photovoltaic arrays
First Claim
1. A distributed electrical energy device, comprising:
- at least one of;
a photovoltaic device or an energy storage device; and
a controller, sensing alternating current (AC) power parameters of an electric power system and using active feedback-control, configured to synchronize an output of the photovoltaic device or the energy storage device to the electrical power system.
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Abstract
A solar electric system comprises photovoltaic elements having integrated energy storage and control, ideally on each PV-panel. The energy storage media may be primary or secondary cylindrical cells interconnected into a battery and/or an array of capacitors (or super-capacitors) and are accompanied by an electronic control circuit which may perform a variety of functions, including but not limited to power quality control, load following, pulse powering, active line transient suppression, local sensing, remote reporting, wireless or wired communications allowing two way programmable control through local or remote operation. The operation of the system may yield direct current or with the integration of bidirectional micro-inverters create distributed alternating current generation enhanced with energy storage and control two way energy flows between the solar system and the grid.
51 Citations
41 Claims
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1. A distributed electrical energy device, comprising:
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at least one of;
a photovoltaic device or an energy storage device; anda controller, sensing alternating current (AC) power parameters of an electric power system and using active feedback-control, configured to synchronize an output of the photovoltaic device or the energy storage device to the electrical power system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A distributed electrical energy device, comprising:
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at least one of;
a photovoltaic device or an energy storage device; anda controller, sensing alternating current (AC) power parameters of an electric power system and using active feedback-control, configured to control an output current of at least one of;
an output of the photovoltaic device or an output of the energy storage device, based on an electric load connected to the distributed electric energy device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A distributed electrical energy device, comprising:
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at least one of;
a photovoltaic device or an energy storage device; anda controller, sensing alternating current (AC) power parameters of an electric power system and using active feedback-control, configured to provide an early warning indicator, and wherein the early warning indicator is representative of a reduction in output power of the at least one photovoltaic device. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A distributed electrical energy device, comprising:
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a photovoltaic device and an energy storage device; and a controller, sensing alternating current (AC) power parameters of an electric power system and using active feedback-control, configured to charge the energy storage device via the electrical power system based on electric energy stored in the energy storage device. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification