State of Charge Control Strategy of VSG in Microgrid

doi:10.11985/2016.04.005

Abstract

Abstract:

Virtual synchronous generator (VSG) in microgrid requires storage module to meet the needs of continuous power supply demand. It is vital to control the state of charge (SOC) of the storage module. To solve this problem, based on the traditional VSG control, SOC control section is added on the basis of proportional integral (PI) controller, and regulator parameter is established through pole assignment on the basis of small signal model, which makes the system a good dynamic performance. At last, the correctness and feasibility of the control strategy is verified by simulation.

Key words: Virtual synchronous generator, state of charge, pole assignment

CLC Number:

TM464

Guo Lizhi,Zhang Xing,Hu Chao,Liu Fang. State of Charge Control Strategy of VSG in Microgrid[J]. Journal of Electrical Engineering, 2016, 11(4): 29-34.

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References 9

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参数名称	数值	参数名称	数值
额定功率/kW	20	滤波电感L/mH	0.9
额定线电压/V	380	滤波电容C/μF	10
频率/Hz	50	虚拟惯性J/kg·m²	1.1
采样频率/kHz	16	调频系数k_ω	8 000
开关频率/kHz	16	SOC比例系数k_p	10 000
储能容量/A·s	600	SOC比例系数k_i	12 500