基于改进型二阶广义积分器-锁频环的储能变换器惯量模拟方法  

A INERTIA SIMULATION METHOD BASED ON IMPROVED SECOND-ORDER GENERALIZED INTEGRATOR-FREQUENCY-LOCKED LOOP

作　　者：石荣亮 张烈平[1] 王文成[1] 于雁南 张兴[2] Shi Rongliang;Zhang Lieping;Wang Wencheng;Yu Yannan;Zhang Xing(College of Mechanical and Control Engineering,Guilin University of Technology,Guilin 541004,China;School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]桂林理工大学机械与控制工程学院,桂林541004 [2]合肥工业大学电气与自动化工程学院,合肥230009

出　　处：《太阳能学报》2021年第12期428-434,共7页Acta Energiae Solaris Sinica

基　　金：广西自然科学基金(2020GXNSFBA297124);桂林理工大学科研启动基金(GUTQDJJ2019167)。

摘　　要：针对基于二阶广义积分器-锁频环(SOGI-FLL)原理的储能变换器惯量模拟方法,易受电网电压中所包含的特征次谐波干扰而存在高频纹波的问题,提出一种基于改进型SOGI-FLL (ISOGI-FLL)准确检测频率微分信号的惯量模拟方法,即在SOGI-FLL的控制回路中嵌入频率自适应陷波器以形成基于ISOGI-FLL原理的惯量模拟改进方案,然后给出ISOGI-FLL的参数设计方法,并利用Matlab/Simulink仿真结果验证并分析其有效性。最后建立一套包含1台440 kW柴油发电机组与2台100 kVA储能变换器的柴储微网实验平台,实验结果验证了所述控制方法的正确性。The second order generalized integrator-frequency locked loop(SOGI-FLL)is usually used to realize virtual inertia control of the energy storage converter(ESC). However,However, it is easy to be disturbed by the characteristic sub-harmonics contained in the grid voltage and has the problem of high frequency ripple. To deal with this problem,this paper investigates an improved virtual inertia control method using a frequency adaptive notch filter based improved SOGI-FLL(ISOGI-FLL),which takes into full consideration the limited filtering capacities of the SOGI-FLL. In addition,the parameter design method of ISOGI-FLL is presented. Its effectiveness is verified and analyzed by Matlab/Simulink simulation results. Finally,the proposed strategy is demonstrated in detail and validated with a mircogrid consisting of a 440 kW-diesel generator set and two 100 kVA-ESCs under various conditions.

关 键 词：二阶广义积分器-锁频环 储能变换器 惯量模拟 谐波干扰 频率微分 

分 类 号：TK5I4[动力工程及工程热物理—热能工程]