直流微网储能系统的自适应惯量阻尼控制  

An adaptive inertia damping control of DC micro-grid energy storage system

作　　者：李铭昕 杨向宇[1] 赵世伟[1] 黄奇林 Li Mingxin;Yang Xiangyu;Zhao Shiwei;Huang Qilin(School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学电力学院

出　　处：《电测与仪表》2019年第12期110-115,共6页Electrical Measurement & Instrumentation

摘　　要：由于无需考虑无功及相位且对于可再生能源发电并网更加友好,近年来,关于直流微网的研究越来越多。但直流微网中惯性较低,当系统受到外界因素干扰时,直流母线电压鲁棒性较低,严重时甚至影响系统的稳定运行。针对该问题,提出一种用于直流微网储能系统的自适应惯量阻尼控制策略,并充分利用了虚拟参数灵活可调的特点,使储能系统可以向微网提供惯性,并建立了系统的小信号模型,利用Middlebrook判据分析了系统的小信号稳定性。最后,通过Simulink仿真对所提控制策略的有效性进行了验证。Since there is no need to consider reactive power and phase and is more friendly to renewable energy power generation grid-connection, there are more and more researches on DC microgrids in recent years. But the inertia of DC micro-grid is low. When the system is disturbed by external factors, the DC bus voltage is less robust, and it even affects the stable operation of the system. In order to solve this problem, an adaptive inertia damping control strategy for DC micro-grid energy storage system is proposed, and the characteristics of flexible and adjustable virtual parameters are fully utilized. The energy storage system can provide inertia to the micro-grid, and the small signal model of the system is established, and the stability of the system is analyzed by the Middlebrook criterion. Finally, the effectiveness of the proposed control strategy is verified by Simulink simulation.

关 键 词：虚拟直流发电机 自适应控制 惯性控制 

分 类 号：TM912[电气工程—电力电子与电力传动]