Distributed power harvesting systems using DC power sources
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A technology of distributed power supply and power supply, applied in the direction of DC network circuit device, AC network circuit, control/regulation system, etc., can solve problems such as failure to point out the power loss of solar panel 101, malfunction of solar array, poor installation or maintenance, etc.
Inactive Publication Date: 2011-01-19
SOLAREDGE TECH LTD
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Therefore, the performance information provided by the inverter 104 monitoring function is often insufficient to understand whether power loss is due to environmental conditions, malf
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[0055] The topology provided by the present invention solves many of the problems associated with existing topologies and has many advantages over existing topologies. For example, the invented topology allows series connection of unmatched power sources such as unmatched solar panels, panels of different models and power ratings or even panels made of different manufacturers and semiconductor materials. This topology allows series connection of power supplies that operate under different conditions, for example, solar panels under different light or temperature conditions. This topology can also be used to install panels in series on different orientations or sections of the roof or building. This and other features and advantages are apparent from the following detailed description.
[0056] Aspects of the present invention provide systems and methods for combining the power of multiple DC sources into a single source. In aspects of the invention, each DC power source is a...
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Abstract
A system and method for combining power from DC power sources. Each power source is coupled to a converter. Each converter converts input power to output power by monitoring and maintaining the input power at a maximum power point. Substantially all input power is converted to the output power, and the controlling is performed by allowing output voltage of the converter to vary. The converters are coupled in series. An inverter is connected in parallel with the series connection of the converters and inverts a DC input to the inverter from the converters into an AC output. The inverter maintains the voltage at the inverter input at a desirable voltage by varying the amount of the series current drawn from the converters. The series current and the output power of the converters, determine the output voltage at each converter.
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[0001] Related Application Cross Reference [0002] This application claims priority over the following U.S. provisional patent applications entitled "Monitoring, Management, and Maintenance of Distributed Solar Distributed Power Harvesting System for Power Sources" (Serial No. 60 / 868,893, submitted on December 6, 2006), entitled "System, Method and Device for Chemical Independent Battery Control" (Serial No. 60 / 868,962, submitted on December 7, 2006) , titled "Distributed Power Source Electric Energy Harvesting System and Method" (Serial No. 60 / 908,095, March 26, 2007), titled "Harvesting Electric Energy from DC Power Sources" (Serial No. 60 / 916,815, submitted on May 9, 2007) . The entire contents of the aforementioned patents are incorporated by reference into this patent application. Moreover, this patent application and common U.S. patent application No. 11 / 950,224, filed on December 4, 2007, entitled "Current Bypass of Distributed Electric Energy Harvesting System Using D...
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