Research on Power Distribution for Parallel Inverters in Micro-grids

doi:10.11985/2020.04.006

Abstract

Abstract:

An inverter is the interface of the distributed generation in micro-grids. With the increasing proportion of renewable energy, the operation of inverters in parallel becomes a key technology. In this case, the droop control method without communication interconnection is widely used in micro-grids. For the inverter parallel control system, the basic principle of traditional droop control method is analyzed. Because of the different impedances of the transmission line, the accurate distribution of reactive power is affected by the control method. Therefore, an improved droop control method based on PI regulator is presented. Matlab/Simulink simulation software is used to verify the correctness and effectiveness of the proposed control method.

Key words: Improved droop control, parallel operation, inverter, power distribution

CLC Number:

TM464

ZHAO Kai, YOU Rui, HAN Dongxu, LIU Xin. Research on Power Distribution for Parallel Inverters in Micro-grids[J]. Journal of Electrical Engineering, 2020, 15(4): 52-58.

Figures/Tables 20

References 20

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