REACTIVE POWER SHARING METHOD FOR PARALLEL INVERTERS BASED ON VIRTUAL IMPEDANCE AND DYNAMIC DROOP COEFFICIENT

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United States of America

APP PUB NO 20250096565A1
SERIAL NO

18470394

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Abstract

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The present invention discloses a reactive power sharing method for parallel inverters based on virtual impedance and a dynamic droop coefficient. The virtual impedance is constructed through the parameter design of voltage and current double-closed loop controllers and a line impedance observer, to realize power decoupling. A dynamic droop coefficient is constructed to adjust the output voltage of a virtual synchronous generator adaptively, and the output reactive power of inverters is controlled indirectly to achieve reactive power sharing according to capacities. The present invention does not need a communication network between the inverters, and only needs the local variable information of each inverter, so that a microgrid has the function of “plug and play”.

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Patent Owner(s)

Patent OwnerAddress
HUNAN UNIVERSITY OF TECHNOLOGYNO 569 YUELU AVENUE YUELU DISTRICT CHANGSHA HUNAN 410000 CHANGSHA CITY HUNAN PROVINCE 410000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
LI, SHENGQING ZHUZHOU, CN 2 0
LI, XIN ZHUZHOU, CN 946 7137

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