摘要
为克服传统电池/超级电容混合储能系统(hybrid energy storage system, HESS)中电气或机械耦合方式下存在的多级功率不平衡、机械零件不匹配等问题,本文基于双三相永磁同步电机(permanent magnet synchronous machine, PMSM)进行HESS设计,并结合电动汽车典型运行工况提出一种分布式转矩控制方法。文中首先建立双三相PMSM混合储能系统数学模型,推演分析了电机双绕组转矩关系,设计了适用于双三相PMSM的分布式转矩控制系统。在此基础上,考虑HESS中电池组和UCs特性差异,分析了高功率、低功率以及UCs能量调节三种HESS模式下的转矩关系,并完成了高低频转矩的分频协调控制。最后,基于5kW测试平台对所提方法进行测试与分析,结果表明该系统可在全速域加速、加减载、负载扰动等多模式下实现HESS稳态和暂态功率的高性能调节,同时,磁链解耦调节环节有效增强了HESS的暂态响应能力,有效地抑制了负载扰动下的系统低频振荡。
To overcome the multi-stage power imbalance,mechanical parts poor matching and other problems when the traditional battery/supercapacitor hybrid energy storage system(HESS)is in an electrical or mechanical coupling mode.We design a HESS based on dual three-phase permanent magnet synchronous machine(PMSM),and a distributed torque control method is proposed considering the typical operating conditions of electric vehicles.In this paper,the mathematical model of the dual three-phase PMSM HESS is firstly established,the torque relationship of double-winding motor is deduced and analyzed,and a distributed torque control system suitable for dual three-phase PMSM is designed.On this basis,considering the characteristics difference between the battery and ultra capacitors(UCs)of HESS,the torque relationship is analyzed under three HESS modes,such as high power,low power and UCs energy regulation.Then the frequency division coordination control for high and low frequency torque is completed.Finally,the proposed method is tested and analyzed on a 5kW test platform,and the results show that the system can achieve high performance regulation of HESS steady state and transient power in multiple modes,such as full-speed domain acceleration,load addition and load reduction,load disturbance.At the same time,the flux decoupling regulation link effectively enhances the transient response capacity of HESS,and the low frequency oscillation of the system under load disturbance is effectively suppressed.
作者
刘嘉
胡晋智
黄璟
孙文
LIU Jia;HU Jinzhi;HUANG Jing;SUN Wen(Department of Mechanical Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China;State Grid Power Research Institute Limited Corporation,Nanjing 211106,China)
出处
《大电机技术》
2023年第3期66-73,共8页
Large Electric Machine and Hydraulic Turbine
基金
山西省高校科技创新项目(2020L0629)
太原工业学院院士工作站项目(TYSYSGZZ201903)。
关键词
混合储能系统
双三相永磁同步电机
分布式转矩
磁链解耦调节
hybrid energy storage system
dual three-phase permanent magnet synchronous machine
distributed torque
flux decoupling regulation
作者简介
刘嘉(1982-),2011年毕业于中北大学机械设计及理论专业,硕士,研究方向:电动汽车动力系统测试,智能机电系统设计,副教授。
