A droop control method for improving load distribution in an island microgrid

作者：Du, Yan^*; Su, Jianhui; Chang, Liuchen; Yang, Xiangzhen

来源：Automation of Electric Power Systems, 2015, 39(15): 24-29 and 125.

DOI：10.7500/AEPS20140818004

• Droop control
• Droop control method
• Dynamic performance
• Load distributions
• Micro grid
• Microgrid inverters
• Paralleled inverters
• Voltage drop compensations

The deteriorated effects on proportional load distribution are caused by mismatch of the output impedance and the feeder impedance in the conventional droop-control of multi-microgrid inverters (MGIs). The matching condition between output impedance and feeder impedance are revealed in the condition of sharing the load in proportional to their power rating among multi-paralleled inverters. A novel droop controller with adaptive droop coefficients and voltage drop compensations is proposed to share the load accurately in both dynamic and steady state. Additional, the design procedure of the parameters in this proposed controller are provided as well. The simulation and experiment are provided to validate its feasibility and validity.

• 出版日期2015
• 单位合肥工业大学