Method for limiting voltage of module, and apparatus and system for applying the same

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United States of America Patent

PATENT NO 12081167
APP PUB NO 20210367555A1
SERIAL NO

16652252

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Abstract

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A method for component voltage limitation, and an apparatus and a system for applying the same. At least one photovoltaic cell in a photovoltaic-cell string is controlled to operate in a voltage-limited mode, in response to receiving an instruction for enabling voltage limitation. Thereby, the voltage of the photovoltaic-cell string is reduced. A quantity of photovoltaic modules connected in series can be increased, while a highest voltage of the system is guaranteed not to exceed a corresponding requirement. A system cost is reduced. The photovoltaic cell operating in the voltage-limited mode is controlled to resume a normal output, in response to receiving the instruction for suspending voltage limitation. The output voltage of the photovoltaic-cell string is increased. Thereby, a rate of utilization on a direct voltage, and a PVIR of DC/AC are improved for the photovoltaic system.

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Patent Owner(s)

Patent OwnerAddress
SUNGROW POWER SUPPLY CO LTDNO 1699 XIYOU RD NEW & HIGH TECHNOLOGY INDUSTRIAL DEVELOPMENT ZONE HEFEI ANHUI 230088 230088

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cao, Renxian Anhui, CN 7 13
Yang, Zongjun Anhui, CN 29 56

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