三相电压型PWM整流器滑模控制算法研究
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摘要
三相电压型PWM整流器通常采用传统的线性双闭环控制器结构,由于PI控制的滞后性,双闭环PI控制难以保证系统在扰动下具有良好的动态性能。考虑三相电压型PWM整流器的非线性特征,利用滑模变结构对外部干扰和系统参数变化的强鲁棒性,设计了一种采用滑模变结构非线性控制算法。在Matlab/Simulink中搭建了PWM整流器控制系统仿真模型。滑模变结构控制算法与双闭环PI控制算法调节性能的对比表明,滑模变结构控制算法具有更好的动稳态性能。
The three-phase voltage source PWM rectifier usually adopts the traditional linear double closed-loop controller structure.Due to the hysteresis of PI control,the double closed-loop PI control is difficult to ensure the system has good dynamic performance under disturbance.Considering the nonlinear characteristics of three-phase voltage source PWM rectifier,a nonlinear control algorithm based on sliding mode variable structure is designed by using the strong robustness of sliding mode variable structure to external disturbances and system parameter changes.The simulation model of PWM rectifier control system is built in Matlab/Simulink.The comparison between the regulation performance of the sliding mode variable structure control algorithm and the double closed-loop PI control algorithm shows that the sliding mode variable structure control algorithm has better dynamic steady state performance.
The three-phase voltage source PWM rectifier usually adopts the traditional linear double closed-loop controller structure.Due to the hysteresis of PI control,the double closed-loop PI control is difficult to ensure the system has good dynamic performance under disturbance.Considering the nonlinear characteristics of three-phase voltage source PWM rectifier,a nonlinear control algorithm based on sliding mode variable structure is designed by using the strong robustness of sliding mode variable structure to external disturbances and system parameter changes.The simulation model of PWM rectifier control system is built in Matlab/Simulink.The comparison between the regulation performance of the sliding mode variable structure control algorithm and the double closed-loop PI control algorithm shows that the sliding mode variable structure control algorithm has better dynamic steady state performance.
引文
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[5]陆翔,谢运祥,桂存兵,等.基于多滑模变结构控制的三相PWM整流器非线性控制[J].电工技术学报,2016(04):79-87.
[6]Hedayati M H,Acharya A B,John V.Common-Mode Filter Design for PWM Rectifier-Based Motor Drives[J].IEEE Transactions on Power Electronics,2013,28(11):5364-5371.
[7]许鹏.PWM整流控制策略研究[D].哈尔滨:哈尔滨工程大学,2013:2-16.
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[2]黄江波,王万宝.三相电压型SVPWM整流器的研究与设计[J].山西电子技术,2010(04):75-78.
[3]许鹏.PWM整流控制策略研究[D].哈尔滨:哈尔滨工程大学,2013:2-16.
[4]高日辉,陈燕,马春燕,等.基于滑模控制的三相PWM整流器结构设计与性能仿真[J].太原理工大学学报,2018(02):258-263.
[5]陆翔,谢运祥,桂存兵,等.基于多滑模变结构控制的三相PWM整流器非线性控制[J].电工技术学报,2016(04):79-87.
[6]Hedayati M H,Acharya A B,John V.Common-Mode Filter Design for PWM Rectifier-Based Motor Drives[J].IEEE Transactions on Power Electronics,2013,28(11):5364-5371.
[7]许鹏.PWM整流控制策略研究[D].哈尔滨:哈尔滨工程大学,2013:2-16.
[8]张崇巍,张兴.PWM整流器及其控制[M].北京:机械工业出版社,2003.
[9]胡开埂,杨贵杰.基于DSP的三相PWM可控整流系统的设计[J].电气应用,2007,26(10):51-54.