Islanding detection mothod for inverter and apparatus

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United States of America Patent

PATENT NO 11777322
SERIAL NO

17240761

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Abstract

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The present disclosure provides an islanding detection method for an inverter and a corresponding apparatus. The islanding detection method includes: step A1: obtaining a parameter of an output voltage of a three-phase AC system and a steady-state value corresponding to the parameter within a period of time; step A2: obtaining a disturbance signal based on the parameter and the steady-state value; step A3: superimposing the disturbance signal on at least one reference value of a droop control; and step A4: detecting the parameter added with the disturbance signal, and determining that island occurs in response to the parameter greater than an upper limit or less than a lower limit.

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Patent Owner(s)

  • DELTA ELECTRONICS (SHANGHAI) CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Li Shanghai, CN 916 8390
Qiu, Aibin Shanghai, CN 11 77
Wang, Changyong Shanghai, CN 31 533

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