基于矩阵变换器的飞轮储能模型预测控制策略  

Model Predictive Control Strategy of Flywheel Energy Storage System Based on Matrix Converter

作　　者：王云辉 张建伟[1,2] 田桂珍[1,2] 刘广忱[1,2] WANG Yunhui;ZHANG Jianwei;TIAN Guizhen;LIU Guangchen(College of Electric Power,Inner Mongolia University of Technology,Hohhot 010080;Engineering Research Center of Large Energy Storage Technology,Ministry of Education,Inner Mongolia University of Technology,Hohhot 010080)

机构地区：[1]内蒙古工业大学电力学院,呼和浩特010080 [2]内蒙古工业大学大规模储能技术教育部工程研究中心,呼和浩特010080

出　　处：《电气工程学报》2024年第2期26-33,共8页Journal of Electrical Engineering

基　　金：内蒙古高校青年科技英才(NJYT22082);内蒙古自治区直属高校基本科研业务费(JY20230009,JY20220092);内蒙古自治区科技重大专项(2020ZD0014)资助项目。

摘　　要：飞轮储能系统常用的背靠背变换器中间存在直流环节及电解电容,使得变换器体积庞大,而且直流环节电解电容器会带来直流电压控制、寿命和维护成本等问题。针对上述问题,采用矩阵变换器作为飞轮储能系统的控制变换器,有效地融入了矩阵变换器的优势,避免了背靠背变流器中直流环节及电解电容带来的问题。在分析储能系统工作原理的基础上,考虑到矩阵变换器电压传输比的限制,通过理论计算得出基于矩阵变换器的飞轮储能系统的运行范围。通过理论分析得到了飞轮储能系统功率与飞轮转速的关系,然后利用转速外环电流内环的双闭环控制方式实现对飞轮储能系统的控制。电流内环采用模型预测控制策略对矩阵变换器进行控制,从而实现飞轮储能系统的充放电控制。Matlab/Simulink中的仿真结果验证了运行范围分析的准确性和所提控制策略的有效性.The commonly used converter topology in the flywheel energy storage system(FESS)is the back-to-back converter.However,due to the intermediate DC link electrolytic capacitor,the converter is bulky.The electrolytic capacitor also brings problems such as DC voltage control,life and maintenance cost.To solve the above problems,the matrix converter is used to drive the FESS and the benefits of the matrix converter can be effectively integrated into FESS,avoiding the issues associated with the back-to-back converter.Based on the theoretical analysis of the system principle and considering the limit of voltage transfer ratio of the matrix converter,the operating range of the matrix converter-based FESS is derived.The relationship between the FESS system power and flywheel velocity is obtained by theoretical analysis,and then the FESS control is realized by the scheme of the outer speed control loop combined with the inner current control loop.The model predictive control is employed for the inner control loop to control the matrix converter,thus realizing the charging and discharging control of FESS.The correctness of the operating range analysis and the effectiveness of the proposed control strategy are verified by the simulation results obtained in Matlab/Simulink.

关 键 词：飞轮储能系统 充放电控制 矩阵变换器 永磁同步电机 模型预测控制 运行范围 

分 类 号：TM921[电气工程—电力电子与电力传动]