Nonlinear Control of Three-Phase PWM Rectifier Based on Multi-Sliding Mode Variable Structure Control
Lu Xiang1, 2, Xie Yunxiang1, Gui Cunbing1, Cheng Li1
1. School of Electric Power South China University of Technology Guangzhou 510641 China; 2. College of Physical Science and Technology Guangxi University Nanning 530004 China
Abstract：A multi-sliding mode variable structure control strategy is proposed combined input-output feedback linearization control with sliding mode variable structure control, according to the nonlinear characteristics of three-phase PWM rectifier. Voltage outer loop uses sliding mode variable structure control strategy based on the index reaching law, to ensure output voltage stable and provide a reference current instruction to the current loop. After building two-input and two-output affine nonlinear model of three-phase PWM rectifier, the current inner loop was linearized, and the inner current loop controller was designed by sliding mode control theory. Simulation model in Matlab/Simulink and a 15 kW experimental prototype were built . The results verify the control scheme. The rectifier using the proposed control scheme has such advantages as good system dynamic characteristics, strong robustness, strong anti-jamming ability, etc. At the same time, the drawback that input-output feedback linearization requires precise mathematical model is overcome.
[1] 张兴, 张崇巍. PWM整流器及其控制[M]. 北京: 机械工业出版社, 2012. [2] 魏克新, 杜吉飞, 杜明星. 三相PWM整流器电压外环PI调节过程分析[J]. 高电压技术, 2010, 36(9): 2236-2240. Wei Kexin, Du Jifei, Du Mingxing. Analysis of three phase PWM rectifier voltage outer loop PI regulating process[J]. High Voltage Engineering, 2010, 36(9): 2236-2240. [3] 王晓刚, 谢运祥, 帅定新, 等. 三相电压型脉宽调制整流器的非线性预测控制[J]. 中国电机工程学报, 2009, 29(21): 27-33. Wang Xiaogang, Xie Yunxiang, Shuai Dingxin, et al. Nonlinear prediction control of three-phase voltage source pulse width modulation rectifiers[J]. Pro- ceedings of the CSEE, 2009, 29(21): 27-33. [4] 赵振波, 李和明, 董淑惠. 采用电流滞环调节器的电压矢量控制PWM整流器系统[J]. 电工技术学报, 2004, 19(1): 31-34, 41. Zhao Zhenbo, Li Heming, Dong Shuhui. Voltage vector-controlled PWM rectifier system with current hysteresis regulatorsr[J]. Transactions of China Electrotechnical Society, 2004, 19(1): 31-34, 41. [5] 张志, 谢运祥, 乐江源, 等. 三相电压型PWM整流器的反馈线性化和滑模控制[J]. 华南理工大学学报(自然科学版), 2009, 37(11): 71-75. Zhang Zhi, Xie Yunxiang, Le Jiangyuan, et al. Feedback linearization and sliding-mode control of three-phase voltage source PWM rectifier[J]. Journal of South China University of Technology (Natural Science Edition), 2009, 37(11): 71-75. [6] 王久和, 张巧杰, 王勉. 三相四线电压型PWM 整流器混合无源控制[J]. 电工技术学报, 2013, 28(7): 212-217. Wang Jiuhe, Zhang Qiaojie, Wang Mian. Passivity based controller of three-phase four-wire voltage source PWM rectifier[J]. Transactions of China Electrotechnical Society, 2013, 28(7): 212-217. [7] Lee T S. Input-output linearization and zero- dynamics control of three-phase AC/DC voltage source converters[J]. IEEE Transactions on Power Electronics, 2003, 18(1): 11-22. [8] 邓卫华, 张波, 丘东元, 等. 三相电压型PWM整流器状态反馈精确线性化解耦控制研究[J].中国电机工程学报, 2005, 25(7): 97-103. Deng Weihua, Zhang Bo, Qiu Dongyuan, et al. The research of decoupled state variable feedback linearization control method of three-phase voltage source PWM rectifier[J]. Proceedings of the CSEE, 2005, 25(7): 97-103. [9] 张平化, 杨贵杰, 李铁才. 三相PWM整流器的反馈线性化直接电压控制[J]. 中国电机工程学报, 2010, 30(18): 39-46. Zhang Pinghua, Yang Guijie, Li Tiecai. Direct voltage control of three-phase PWM rectifier based on feedback linearization[J]. Proceedings of the CSEE, 2010, 30(18): 39-46. [10] 丁祖军, 刘保连, 倪伟. PWM整流器中优化变结构控制策略的设计[J]. 电力自动化设备, 2012, 32(1): 76-79, 83. Ding Zujun, Liu Baolian, Ni Wei. Design of improved variable structure control for PWM rectifier[J]. Electric Power Automation Equipment, 2012, 32(1): 76-79, 83. [11] 张晓华, 郭源博, 佟雷, 等. 三相PWM整流器的dSPACE实时仿真与控制器参数整定[J]. 电工技术学报, 2013, 28(2): 219-224, 232. Zhang Xiaohua, Guo Yuanbo, Tong Lei, et al. dSPACE real-time simulation and controller parameters tuning for three-phase PWM rectifier[J]. Transactions of China Electrotechnical Society, 2013, 28(2): 219- 224, 232 [12] Kim J H, Jou S T, Choi D K, et al. Direct power control of three-phase Boost rectifiers by using a sliding-mode scheme[J]. Journal of Power Electr- onics, 2013, 13(6): 1000-1007. [13] 陈志梅, 王贞艳, 张井岗. 滑模变结构控制理论及[M]. 北京: 电子工业出版社, 2012. [14] 李大东, 孙秀霞, 董文瀚, 等. 基于线性化反馈的滑模变结构重装空投纵向控制律设计[J]. 控制理论与应用, 2013, 30(1): 54-60. Li Dadon, Sun Xiuxia, Dong Wenhan, et al. Pitch control for flight in heavy-weight airdrop based on feedback linearization theory and variable-structure control[J]. Control Theory & Applications, 2013, 30(1): 54-60. [15] 胡跃明. 变结构控制理论与应用[M]. 北京: 科学出版社, 2003.
2016, Vol. 31 
