独立微网逆变器VSG控制惯量阻尼系数自适应研究  

Adaptive Research on Inertia and Damping Coefficient of VSG Control of Independent Microgrid Inverter

作　　者：高明宇 刘金宁 冯长江 GAO Mingyu;LIU Jinning;FENG Changjiang(Department of Electrical Engineering, Army Engineering University of PLA, Shijiazhuang 050003, China)

机构地区：[1]陆军工程大学石家庄校区车辆与电气工程系,石家庄050003

出　　处：《兵器装备工程学报》2020年第9期46-50,共5页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(51307184)。

摘　　要：针对独立微网中新能源逆变器和发电机组在并联过程中功率振荡和稳态误差大等问题,基于逆变器虚拟同步机控制参数灵活可调的技术优势,提出了一种基于分段自适应惯量、阻尼控制方法,在未明确发电机组的惯量和阻尼参数大小的情况下,以功率差值为计算参数,根据频率变化率分阶段进行惯量与阻尼系数自适应控制,以改善功率分配状态。在Matlab/Simulink中建立仿真进行实验,验证了该控制策略能够有效抑制逆变器与发电机组之间的功率波动和差值,提升独立型微电网中逆变器-发电机组并联系统的稳定性。Aiming at the problems of power oscillation and large steady-state error in parallel operation of new energy inverter and generator set in independent microgrid,based on the technical advantages of flexible and adjustable control parameters of the inverter virtual synchronous machine,a piecewise adaptive inertia and damping control method was proposed.Without defining the specific values of inertia and damping parameters of generator set,the inertia and damping coefficient were adaptively controlled in stages to improve the power distribution state according to the frequency change rate.The simulation results in Matlab/Simulink show that the control strategy can effectively suppress the power fluctuation and difference between the inverter and the generator set,and improve the stability of the inverter generator parallel system in the independent microgrid.

关 键 词：微电网 虚拟同步机控制 惯量系数 阻尼系数 自适应控制 

分 类 号：TM46[电气工程—电器]