基于DPWMMIN调制策略的感应电机驱动系统
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摘要
为了减小调制过程的开关动作次数与开关损耗,对7段式SVPWM调制策略进行改进,采用DPWMMIN调制策略实现对电压源型逆变器输出电压的精确调制,推导出DPWMMIN调制策略的实现过程。同时在两相旋转坐标系下建立感应电机与逆变桥的数学模型,对定子电流控制器参数进行设计。仿真与实验结果表明,本文采用的DPWMMIN调制方法能够实现对目标电压矢量的精确调制,控制系统具有良好的稳态与动态性能,说明本文采用的调制策略以及控制方法的可行性与正确性。
In order to reduce the number of switching actions and switching losses in the modulation process,the 7-segment SVPWM modulation strategy was improved,DPWMMIN modulation strategy was adopted to accurately modulate output voltage for voltage source inverter,and the implementation process was derived.The math model of inductor motor and inverter bridge was established in two phase rotating reference frame,stator current controller parameters was designed. Simulation and experimental results show that the target voltage vector DPWMMIN modulation strategy can be accurate modulated by DPWMMIN modulation strategy adopted in this paper,control system has good steady and dynamic performance,which demonstrates the proposed modulation strategy and control method are correct and feasible.
In order to reduce the number of switching actions and switching losses in the modulation process,the 7-segment SVPWM modulation strategy was improved,DPWMMIN modulation strategy was adopted to accurately modulate output voltage for voltage source inverter,and the implementation process was derived.The math model of inductor motor and inverter bridge was established in two phase rotating reference frame,stator current controller parameters was designed. Simulation and experimental results show that the target voltage vector DPWMMIN modulation strategy can be accurate modulated by DPWMMIN modulation strategy adopted in this paper,control system has good steady and dynamic performance,which demonstrates the proposed modulation strategy and control method are correct and feasible.
引文
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[6]杜会卿,刁利军,陈杰,等.三相电压源逆变器最小损耗PWM算法性能优化[J].中国电机工程学报,2016,36(11):3005-3016.
[7]肖英.基于不连续PWM的单电阻相电流重构方法研究[D].重庆:重庆大学,2015.
[8]安少亮,孙向东,陈樱娟,等.一种新的不连续PWM统一化实现方法[J].中国电机工程学报,2012,32(24):59-66.
[9]郭东山,杨亚洲.基于dSPACE平台的PMSM矢量控制弱磁增速算法研究[J].微电机,2016,49(12):65-69.
[2]Hak-Jun L,J Sungho,S Seung-Ki.A Current Controller Design for Current Source Inverter-Fed AC Machine Drive System[J].IEEETransactions on Power Electronics,2013,28(3):1366-1381.
[3]张兴,张崇巍.PWM整流器及其控制[M].北京:机械工业出版社,2012.
[4]周卫国,吴正国,唐劲松,等.SVPWM的等效算法及SVPWM与SPWM的本质联系[J].中国电机工程学报,2006,26(2):133-137.
[5]刘小俊,邓歆,张广明,等.多种空间矢量调制方法的谐波分析[J].微电机,2016,49(4):62-66.
[6]杜会卿,刁利军,陈杰,等.三相电压源逆变器最小损耗PWM算法性能优化[J].中国电机工程学报,2016,36(11):3005-3016.
[7]肖英.基于不连续PWM的单电阻相电流重构方法研究[D].重庆:重庆大学,2015.
[8]安少亮,孙向东,陈樱娟,等.一种新的不连续PWM统一化实现方法[J].中国电机工程学报,2012,32(24):59-66.
[9]郭东山,杨亚洲.基于dSPACE平台的PMSM矢量控制弱磁增速算法研究[J].微电机,2016,49(12):65-69.