Abstract：The inductance of synchronous reluctance motor (SynRM) varies with current in operation. If the inductor is linearized during the control process, it will cause a large error on the result. Therefore, it is necessary to identify the inductance of the SynRM. Because the rotor structure of the motor has strong salient polarity, it is easy to genarate the large harmonic components in the current, which will affect the accuracy of inductance identification. Aiming at the error caused by harmonic components, a signal amplitude demodulation scheme based on directional rotation transformation by injecting the rotating voltage is proposed in this paper. The scheme eliminates the need to use filters and avoids the problem of distortion of the identification result due to the filter. At the same time, the recursive DFT is used in the scheme to calculate the amplitude of positive and negative sequence currents in the stationary shafting. The algorithm has the advantages of small computation and easy digital implementation. Finally, the comparative verification experiments were carried out on the 5.5kW SynRM experimental platform. The experimental results show that the experimental process does not depend on the rotor position estimation, and the proposed scheme has higher detection accuracy.
杨淑英, 刘威, 李浩源, 刘世园张兴. 基于旋转注入的同步磁阻电机电感辨识方案[J]. 电工技术学报, 2019, 34(zk1): 97-104.
Yang Shuying, Liu Wei, Li Haoyuan, Liu Shiyuan, Zhang Xing. Inductance Identification Scheme of Synchronous Reluctance Motor Based on Rotary Injection. Transactions of China Electrotechnical Society, 2019, 34(zk1): 97-104.
[1] 柳志飞, 杜贵平, 杜发达. 有限集模型预测控制在电力电子系统中的研究现状和发展趋势[J]. 电工技术学报, 2017, 32(22): 58-69. Liu Zhifei, Du Guiping, Du Fada.Research status and development trend of finite control set model predictive control in power electronics[J]. Transa- ctions of China Electrotechnical Society, 2017, 32(22): 58-69. [2] 雷亚雄, 李建文, 李永刚. 基于准PR调节器电流双闭环LCL三相并网逆变器控制[J]. 电力系统保护与控制, 2014, 42(12): 44-50. Lei Yaxiong, Li Jianwen, Li Yonggang.Control strategy of three-phase LCL grid-connected inverter based on quasi-PR adjuster[J]. Power System Protection and Control, 2014, 42(12): 44-50. [3] Busada C A, Jorge S G, Solsona J A.Full-state feedback equivalent controller for active damping in LCL-filtered grid-connected inverters using a reduced number of sensors[J]. IEEE Transactions on Industrial Electronics, 2015, 62(10): 5993-6002. [4] 周乐明, 罗安, 陈燕东, 等. 单相LCL型并网逆变器功率控制及有源阻尼优化方法[J]. 电工技术学报, 2016, 31(6): 144-154. Zhou Leming, Luo An, Chen Yandong, et al.A single-phase grid-connected power control and active damping optimization strategy with LCL filter[J]. Transactions of China Electrotechnical Society, 2016, 31(6): 144-154. [5] 金亮亮, 周荔丹, 姚钢, 等. 适用于并网逆变器的新型LCL滤波器[J]. 电力系统保护与控制, 2016, 44(11): 1-8. Jin Liangliang, Zhou Lidan, Yao Gang, et al.A novel LCL filter adopted in grid-connected inverter[J]. Power System Protection and Control, 2016, 44(11): 1-8. [6] 刘怀远, 徐殿国, 武健, 等. 并网换流器系统谐振的分析、检测与消除[J]. 中国电机工程学报, 2016, 36(4): 1061-1074. Liu Huaiyuan, Xu Dianguo, Wu Jian, et al.Analysis, detection and mitigation of resonance in grid- connected converter systems[J]. Proceedings of the CSEE, 2016, 36(4): 1061-1074. [7] Wu Weimin, He Yuanbin, Tang Tianhao, et al.A new design method for the passive damped LCL and LLCL filter-based single-phase grid-tied inverter[J]. IEEE Transactions on Industrial Electronics, 2013, 60(10): 4339-4350. [8] 许德志, 汪飞, 阮毅. LCL、LLCL和LLCCL滤波器无源阻尼分析[J]. 中国电机工程学报, 2015, 35(18): 4726-4736. Xu Dezhi, Wang Fei, Ruan Yi.Passive damping of LCL, LLCL and LLCCL filters[J]. Proceedings of the CSEE, 2015, 35(18): 4726-4736. [9] 刘宝泉, 郭华, 朱一昕, 等. 三相变流器无源阻尼型LCL滤波器的分析与设计[J]. 电工技术学报, 2017, 32(2): 195-205. Liu Baoquan, Guo Hua, Zhu Yixin, et al.Analysis and design of a passively damping LCL filter in three-phase converters[J]. Transactions of China Electrotechnical Society, 2017, 32(2): 195-205. [10] Dannehll J, Fuchs F W, Hansen S, et al.Investigation of active damping approaches for pi-based current control of grid-connected pulse width modulation converters with LCL filters[J]. IEEE Transactions on Industry Applications, 2010, 46(4): 1509-1517. [11] 陈新, 韦徵, 胡雪峰, 等. 三相并网逆变器LCL滤波器的研究及新型有源阻尼控制[J]. 电工技术学报, 2014, 29(6): 71-79. Chen Xin, Wei Zheng, Hu Xuefeng, et al.Research on LCL filter in three-phase grid-connected inverter and novel active damping control strategy[J]. Transa- ctions of China Electrotechnical Society, 2014, 29(6): 71-79. [12] 鲍陈磊, 阮新波, 王学华, 等. 基于PI调节器和电容电流反馈有源阻尼的LCL型并网逆变器闭环参数设计[J]. 中国电机工程学报, 2012, 32(25): 133-142. Bao Chenlei, Ruan Xinbo, Wang Xuehua, et al.Design of grid-connected inverters with LCL filter based on PI regulator and capacitor current feedback active damping[J]. Proceedings of the CSEE, 2012, 32(25): 133-142. [13] Lin Zhuang, Yao Wenxi, Bai Zhihong, et al.Study on active damping of LCL filter resonance based on grid current feedback compensation[C]//IEEE Inter- national Symposium on Industrial Electronics (ISIE), Taipei, 2013: 1-6. [14] Ricchiuto D, Liserre M, Kerekes T, et al.Robustness analysis of active damping methods for an inverter connected to the grid with an LCL-filter[C]//IEEE Energy Conversion Congress and Exposition (ECCE), Phoenix, 2011: 2028-2035. [15] Peña-Alzola R, Liserre M, Blaabjerg F, et al.A self-commissioning notch filter for active damping in a three-phase LCL-filter-based grid-TIE converter[J]. IEEE Transactions on Power Electronics, 2014, 29(12): 6754-6761. [16] Hu Guozhen, Chen Changsong, Duan Shanxu.New active damping strategy for LCL-filter-based grid- connected inverters with harmonics compensation[J]. Journal of Power Electronics, 2013, 13(2): 287-295. [17] Lee J, Jeong H, Lee K.Active damping for wind power systems with LCL Filters using a DFT[J]. Journal of Power Electronics, 2012, 12(2): 326-332. [18] Hu Jiefeng, Zhu Jianguo, Dorrell D G.Model predictive control of inverters for both islanded and grid-connected operations in renewable power generations[J]. IET Renewable Power Generation, 2014, 8(3): 240-248. [19] 杨勇, 赵方平, 阮毅, 等. 三相并网逆变器模型电流预测控制技术[J]. 电工技术学报, 2011, 26(6): 153-159. Yang Yong, Zhao Fangping, Ruan Yi, et al.Model current predictive control for three-phase grid- connected inverters[J]. Transactions of China Elec- trotechnical Society, 2011, 26(6): 153-159. [20] Hong S, Hyun S, Kang J, et al.Model predictive control of 3-level NPC AC/DC PWM converter for DC distribution using LCL filter[C]//IEEE Trans- portation Electrification Conference and Expo, Asia- Pacific (ITEC Asia-Pacific), Busan, 2016: 112-117. [21] Espi J M, Castello J, García-Gil R, et al.An adaptive robust predictive current control for three-phase grid-connected inverters[J]. IEEE Transactions on Industrial Electronics, 2011, 58(8): 3537-3546. [22] Ahmed K H, Massoud A M, Finney S J, et al.A modified stationary reference frame-based predictive current control with zero steady-state error for LCL coupled inverter-based distributed generation systems[J]. IEEE Transactions on Industrial Electronics, 2011, 58(4): 1359-1370. [23] Panten N, Hoffmann N, Fuchs F W.Finite control set model predictive current control for grid-connected voltage-source converters with LCL filters: a study based on different state feedbacks[J]. IEEE Transa- ctions on Power Electronics, 2016, 31(7): 5189-5200. [24] Scoltock J, Geyer T, Madawala U K.A model predictive direct current control strategy with predi- ctive references for MV grid-connected converters with LCL-filters[J]. IEEE Transactions on Power Electronics, 2015, 30(10): 5926-5937. [25] Ferreira S C, Gonzatti R B, Pereira R R, et al.Finite control set model predictive control for dynamic reactive power compensation with hybrid active power filters[J]. IEEE Transactions on Industrial Electronics, 2018, 65(3): 2608-2617. [26] Mariethoz S, Morari M.Explicit model-predictive control of a PWM inverter with an LCL filter[J]. IEEE Transactions on Industrial Electronics, 2009, 56(2): 389-399. [27] Castelló J, Espí J M, García-Gil R.A new generalized robust predictive current control for grid-connected inverters compensates anti-aliasing filters delay[J]. IEEE Transactions on Industrial Electronics, 2016, 63(7): 4485-4494. [28] Zhang Xing, Wang Yangjun, Yu Changzhou, et al.Hysteresis model predictive control for high-power grid-connected inverters with output LCL filter[J]. IEEE Transactions on Industrial Electronics, 2016, 63(1): 246-256. [29] Falkowski P, Sikorski A.Finite control set model predictive control for grid-connected AC-DC con- verters with LCL filter[J]. IEEE Transactions on Industrial Electronics, 2018, 65(4): 2844-2852. [30] Bosch S, Staiger J, Steinhart H.Predictive current control for an active power filter with LCL-filter[J]. IEEE Transactions on Industrial Electronics, 2018, 65(6): 4943-4952. [31] Serpa L A, Ponnaluri S, Barbosa P M, et al.A modified direct power control strategy allowing the connection of three-phase inverters to the grid through LCL filters[J]. IEEE Transactions on Industry Applications, 2007, 43(5): 1388-1400.
2019, Vol. 34 
