Performances Analyzing of Parallel Inverter System Based on an Improved Fuzzy Control Method

Abstract:

The parallel inverter system will produce the phenomenon of circulating current when each inverter’s output voltage is inconsistent. This phenomenon increases the burden of switching elements. Furthermore this system will be crashed, and it could lead to a power interruption. In this paper, the property of the circulating current is analyzed deeply for double-loop parallel inverter system. An improved fuzzy PID control and LCL filter are adapted to make up the really redundancy system. Besides, a hot-swappable system is putted into practice. The simulation results reflect that this method have better inhibitory effect on the circulating current of the parallel inverter system.

• Periodical: Applied Mechanics and Materials (Volume 302)
• Pages: 671-678
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.302.671
• Online since: February 2013
• Authors: Hui Ling Wang, Jun Wang, Ming Qing Wang, Xiao Rong Cui, Li Lin, Zhang Sun
• Keywords: Fuzzy PID-Control, LCL Filter, Master-Slave Control, Parallel Inverters

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