Improved pre-synchronization grid-connected control method based on second-order linear active disturbance rejection

The invention discloses an improved pre-synchronization grid-connected control method based on second-order linear active disturbance rejection, and relates to the technical field of power electronics, and the method comprises the steps: obtaining the output voltage of an inverter and the voltage of...

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Hauptverfasser:	LI ANJUN, LIU ZHUOYA, LI HUAPENG, LIU ANJIANG, DENG SONG, WANG MINGWEI, ZHANG HENGRONG, YANG FUXIANG, HE PENG, LONG QIUFENG, FAN LEI, ZHANG YANG, PAN FUXIANG, ZHENG SHUYI, LI YUE, LYU QIANSU, GUO DAO, ZENG SHIJIE, LUO CHAOYI, HE MINGJUN, WU CONGCONG, XU YUTAO, HAO SHUQING, LI QIANMIN, WU YINGSHUANG, HUANG RUYUN, HUA LONG, CAI YONGXIANG, YANG YEKUI, ZHANG SONG, DAI JIYULEI, LI XINHAO, WANG ZHUOYUE, XIONG JINHANG, ZHOU XINAN, WU PENG, LIU LIANG, WANG ZHU, WANG YANG, CHEN YU, YANG ZHONG, LI WEI, DING JIANGQIAO, FAN KE, CHEN YAO, FAN RUOYUN, KIM GYEONG-WON, XIAO XIAOBING, BAN SHIXUE, MIAO YU, ZHENG YOUZHUO, WANG MIAN, ZHANG RUIFENG, SONG ZIHONG, YANG YUQING, CHEN KAILEI, HE XINYI, TANG KANG, TIAN CHENG, SUN LI, DU HAO, HE XIAOMENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	The invention discloses an improved pre-synchronization grid-connected control method based on second-order linear active disturbance rejection, and relates to the technical field of power electronics, and the method comprises the steps: obtaining the output voltage of an inverter and the voltage of a power grid; performing data processing on the output voltage of the inverter and the voltage of the power grid, and formulating an improved pre-synchronization control strategy without a phase-locked loop to realize phase and amplitude synchronization; and combining the improved pre-synchronization control strategy without the phase-locked loop with second-order linear active disturbance rejection control, formulating an improved pre-synchronization grid-connected control strategy based on second-order linear active disturbance rejection, and reducing frequency fluctuation of the system during grid connection. A phase-locked loop structure is omitted, only a PI regulator is needed, the variation amplitude of vol