Abstract：In the three-phase VSR control system, in order to solve the errors caused by direct current drift and initial value in flux estimation under the traditional no voltage sensors control, a new adaptive sliding-mode observer with virtual flux orientation under non-line voltage sensors control is presented in direct power control(DPC) system. In the new observer, the power supply voltage value is estimated by the switching function based on Sigmoid function. Meanwhile, we design a novel adaptive controller to adjust the compensated reference flux based on virtual flux linkage to be perpendicular to grid voltage. This adaptive sliding-mode observer has improved the virtual flux estimation precision, according to the justified tendency of reduction of the number of the sensors. As an efficient solution to improve the power quality used in DPC system, the proposed control strategy has effectively inhibited the bus voltage fluctuation and harmonic interference. The good dynamic and static performance is verified by simulation and experiment.
肖雄,张勇军,王京,李华德. 无电压传感PWM整流器的虚拟磁链自适应滑模观测研究[J]. 电工技术学报, 2015, 30(12): 152-161.
Xiao Xiong,Zhang Yongjun,Wang Jing,Li Huade. PWM Rectifiers Based on Adaptive Sliding-mode Observer with Virtual Flux Orientation under Non-line Voltage Sensors Control. Transactions of China Electrotechnical Society, 2015, 30(12): 152-161.
[1] Z.F. Song, C.L. Xia, T. Liu. Predictive current control of three-phase grid-connected converters with constant switching frequency for wind energy systems[J]. IEEE Transactions on Industrial Electronics, 2013,60 (6):2451-2464. [2] 张巍, 尚晓磊, 周元钧, 刘欣博. 一种适用于航空电力作动器负载的三相PWM整流器最大功率控制[J]. 电工技术学报, 2011, 26(8): 91-98. Zhang Wei, Shang Xiaolei, Zhou Yuanjun, et al. A maximum power control method of three-phase voltage source rectifiers adapted to aircraft electric actuator load[J]. Transactions of China Electrotech- nical Society, 2011, 26(8): 91-98. [3] 汪万伟, 尹华杰, 管霖. 双闭环矢量控制的电压型PWM 整流器参数整定[J]. 电工技术学报, 2010, 25(2): 67-72. Wang Wanwei, Yin Huangjie, Guan Lin. Parameter setting for double closed-loop vector control of voltage source PWM rectifier[J]. Transactions of China Electrotechnical Society, 2010, 25(2): 67-72. [4] P. Antoniewicz, M. P. Kazmierkowski. Virtual flux based predictive direct power control of AC/DC converters with on-line inductance estimation[J]. IEEE Transactions on Industrial Electronics, 2013,55 (12): 4381-4390. [5] 姚志垒, 肖岚. 基于改进DPC-SVM的三相并网逆变器[J]. 电力系统保护与控制, 2013, 41(4): 142-147. Yao Zhilei, Xiao Lan. Three-phase grid-connected inverters with improved DPC-SVM[J]. Power System Protection and Control, 2013, 41(4): 142-147. [6] 张辉, 谭国俊, 钱苗旺. 基于H ∞ 控制与最优跟踪控制相结合的的三相PWM 整流器控制策略[J]. 电工技术学报, 2012, 27(12): 103-108. Zhang Hui, Tan Guojun, Qian Miaowang. Study of three-phase PWM rectifier based on a mixture of H ∞ Control and optimal tracking control[J]. Transactions of China Electrotechnical Society, 2012, 27(12): 103-108. [7] 邹学渊, 王京, 张勇军. 三电平电压型PWM整流器的SVPWM算法研究[J]. 电气传动, 2010, 40(6): 28-31. Zou Xueyuan, Wang Jing, Zhang Yongjun. SVPWM Algorithm research of three-level voltage-type PWM [J]. Electric Drive, 2010, 40(6): 28-31. [8] Malinowski M, Kazmierkowski M P, Hansen S, et al. Virtual-flux-based direct power control of three-phase PWM rectifiers[J]. IEEE Transactions on Industry Applications, 2001, 37(8): 1019-1027. [9] 赵仁德,贺益康．无电网电压传感器三相PWM整流器虚拟电网磁链定向矢量控制研究[J]．中国电机工程学报,2005,25(20):56-61． Zhao Rende,He Yikang. Virtual line-flux-linkage oriented vector control of three-phase voltage source PWM rectifier without line voltage sensors[J]. Procee- dings of the CSEE,2005,25(20):56-61． [10] 吴凤江, 汪之文, 孙立. PWM 整流器的改进虚拟磁链定向矢量控制[J]. 电机与控制学报, 2008, 12(5): 504-508. Wu Fengjiang, Wang Zhiwen, Sun Li. Improved virtual flux oriented vector control of PWM rectifier [J]. Electric Machines and Control, 2008, 12(5): 504-508. [11] 蒋连钿, 张明, 庄革, 等. 三相PWM整流器中基于虚拟无功的锁相环[J]. 电工技术学报, 2013, 28(8):212-217. Jiang Liandian, Zhang Ming, Zhuang Ge, et al. A phase-locked loop method for three-phase PWM rectifier based on virtual reactive power[J]. Transac- tions of China Electrotechnical Society, 2013, 28(8): 212-217. [12] Dannehl J, Wessels C, Fuchs F W. Limitations of voltage-oriented PI current control of grid-connected PWM rectifiers with LCL filters[J]. IEEE Transactions on Industrial Electronics, 2009, 56(2): 380-388. [13] 杨兴武, 姜建国. 电压型 PWM 整流器预测直接功率控制[J]. 中国电机工程学报, 2011, 31(3): 34-39. Yang Xingwu, Jiang Jianguo. Predictive direct power control for three-phase voltage source PWM rectifiers [J]. Proceedings of the CSEE, 2011, 31(3): 34-39. [14] 王颖杰,伍小杰,戴鹏,等．采用参数辨识及新型主动阻尼控制的LCL滤波脉宽调制整流器[J]．中国电机工程学报,2012,32(15):31-39． Wang Yingjie,Wu Xiaojie,Dai Peng,et al．PWM rectifier with LCL filter based on parameter iden- tification and a new active damping control[J]. Proceedings of the CSEE,2012,32(15):31-39． [15] 赵葵银. PWM整流器的模糊滑模变结构控制[J]. 电工技术学报, 2006, 21(7): 49-53. Zhao Kuiyin. PWM Rectifier With Fuzzy Sliding Mode Variable Structure Control[J]. Transactions of China Electrotechnical Society, 2006, 21(7): 49-53. [16] 陈瑶, 金新民, 童亦斌. 基于滑模控制的三相电压型PWM整流器系统仿真[J]. 系统仿真学报, 2007, 19(8): 1849-1852. Chen Yao, Jin Xinmin, Tong Yibin. Simulation of three-phase voltage source PWM rectifier based on sliding-mode control[J]. Journal of System Simulation, 2007, 19(8): 1849-1852. [17] 汪万伟, 尹华杰, 管霖. 三相电压型PWM整流器滑模变结构直接功率控制[J]. 华南理工大学学报, 2009, 37(11): 84-87. Wang Wanwei, Yin Huajie, Guan Lin. Sliding-mode variable-structure direct power control of three-phase voltage source PWM rectifier[J]. Journal of South China University of Technology, 2009, 37(11): 84-87. [18] 王继东, 苏海滨, 王玲花, 等. 基于虚拟磁链直接功率控制的光伏并网逆变器控制策略研究[J]. 电力系统保护与控制, 2009, 37(11): 70-74. Wang Jidong, Shu Haibin, Wang Linghua, et al. Study on grid-connected inverter used in PV generation system based on virtual flux-linkage direct power control[J]. Power System Protection and Control, 2009, 37(11): 70-74. [19] Su Chen. Direct Power Control of Active Filter with Averaged Switching Frequency Regulation[J]. IEEE Transaction on Power Electronics, 2008, 23(6): 2729-2737.
2015, Vol. 30 
