PI and Sliding Mode Speed Control of Permanent Magnet Synchronous Motor Fed from Three Phase Four Switch VSI
Author(s):
Ashok Kumar R, Dr. Balaji K
Affiliation(s):
ABSTRACT: Variable speed permanent magnet synchronous motor drives require a high performance dynamic speed controller capable of tracking reference speed even under varying load conditions. Vector control of permanent magnet synchronous motor fed from three phase four switch inverter with sliding mode controller as speed regulator is proposed. An observer is used to estimate load torque of PMSM motor which improves the performance of sliding mode controller during load variations. In the proposed PMSM drive system only four power electronic switches are used in the voltage source inverter. The use of reduced number of power switches decreases switching losses and overall cost of the drive. An appropriate vector control technique is employed in the drive which uses two PI controllers to regulate stator current and a single band hysteresis comparator to generate PWM pulse for three phase four switch inverter fed PMSM drive. The proposed vector control technique improves the overall performance of the PMSM drive and a detailed analysis is made between PI and sliding mode controller as speed regulator for the proposed system. Sliding mode controller shows excellent speed regulation performance during starting and varying load conditions in comparison with PI controller. The merits of the proposed PMSM drive system using TPFSI is verified by simulations in Simulink/MATLAB environment.
Keywords : Permanent Magnet Synchronous Motor (PMSM), Proportional Integral Controller (PI), Sliding Mode Controller (SMC), Three Phase Four Switch Inverter (TPFSI), Load Torque Observer.
[2] C. Xia, S. Wang, X. Gu, Y. Yan and T. Shi, “Direct Torque Control for VSI-PMSM Using Vector Evaluation Factor Table,” in IEEE Transactions on Industrial Electronics, vol. 63, no. 7, pp. 4571-4583, July 2016.
[3] W. Liang, J. Wang, P. C. K. Luk, W. Fang and W. Fei, “Analytical Modeling of Current Harmonic Components in PMSM Drive With Voltage-Source Inverter by SVPWM Technique,” in IEEE Transactions on Energy Conversion, vol. 29, no. 3, pp. 673-680, Sept. 2014.
[4] S. Zaim, B. Nahid-Mobarakeh and F. Meibody-Tabar, “Robust Position Sensorless Control of Nonsalient PMSM at Standstill and Low Speeds,” in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 2, no. 3, pp. 640-650, Sept. 2014.
[5] H. C. Chen, K. Y. Chen and W. Y. Chen, “High-Efficiency Current Control Methods Based on Multidimensional Feedback Quantization and Its Application to Three-Phase PMSM,” in IEEE Transactions on Industrial Electronics, vol. 61, no. 11, pp. 5820-5829, Nov. 2014.
[6] C. Xia, J. Zhao, Y. Yan and T. Shi, “A Novel Direct Torque and Flux Control Method of Matrix Converter-Fed PMSM Drives,” in IEEE Transactions on Power Electronics, vol. 29, no. 10, pp. 5417-5430, Oct. 2014.
[7] K. Jezernik, R. Horvat and M. Čurkovič, “A Switching Control Strategy for the Reduction of Torque Ripple for PMSM,” in IEEE Transactions on Industrial Informatics, vol. 9, no. 3, pp. 1272-1279, Aug. 2013.
[8] Y. Yan, S. Wang, C. Xia, H. Wang and T. Shi, “Hybrid Control Set-Model Predictive Control for Field-Oriented Control of VSI-PMSM,” in IEEE Transactions on Energy Conversion, vol. 31, no. 4, pp. 1622-1633, Dec. 2016.
[9] Q. Liu and K. Hameyer, “Torque Ripple Minimization for Direct Torque Control of PMSM With Modified FCSMPC,” in IEEE Transactions on Industry Applications, vol. 52, no. 6, pp. 4855-4864, Nov.-Dec. 2016.
[10] L. Xiaoquan, L. Heyun and H. Junlin, “Load disturbance observer-based control method for sensorless PMSM drive,” in IET Electric Power Applications, vol. 10, no. 8, pp. 735-743, 9 2016.
[11] Q. Yuan and R. Zhao, “DC-link capacitor voltage offset suppression with no filters for three-phase four-switch inverter fed PMSM drives,” in Electronics Letters, vol. 53, no. 11, pp. 746-748, 5 25 2017.
[12] C. Zhu, Z. Zeng and R. Zhao, “Comprehensive Analysis and Reduction of Torque Ripples in Three-Phase Four-Switch Inverter-Fed PMSM Drives Using Space Vector Pulse-Width Modulation,” in IEEE Transactions on Power Electronics, vol. 32, no. 7, pp. 5411-5424, July 2017.
[13] Z. Zeng, C. Zhu, X. Jin, W. Shi and R. Zhao, “Hybrid Space Vector Modulation Strategy for Torque Ripple Minimization in Three-Phase Four-Switch Inverter-Fed PMSM Drives,” in IEEE Transactions on Industrial Electronics, vol. 64, no. 3, pp. 2122-2134, March 2017.
[14] C. Zhu, Z. Zeng and R. Zhao, “Comprehensive Analysis and Reduction of Torque Ripples in Three-Phase Four-Switch Inverter-Fed PMSM Drives Using Space Vector Pulse-Width Modulation,” in IEEE Transactions on Power Electronics, vol. 32, no. 7, pp. 5411-5424, July 2017.
[15] W. Xu, Y. Jiang and C. Mu, “Novel Composite Sliding Mode Control for PMSM Drive System Based on Disturbance Observer,” in IEEE Transactions on Applied Superconductivity, vol. 26, no. 7, pp. 1-5, Oct. 2016.
[16] S. H. Chang, P. Y. Chen, Y. H. Ting and S. W. Hung, “Robust current control-based sliding mode control with simple uncertainties estimation in permanent magnet synchronous motor drive systems,” in IET Electric Power Applications, vol. 4, no. 6, pp. 441-450, July 2010.
[17] Y. Jiang, W. Xu and C. Mu, “Robust Sliding Mode Speed Control with Adaptive Torque Observer for High Performance PMSM,” 2016 IEEE Vehicle Power and Propulsion Conference (VPPC), Hangzhou, 2016, pp. 1-6.
[18] J. Liu, H. Li and Y. Deng, “Torque Ripple Minimization of PMSM based on Robust ILC via Adaptive Sliding Mode Control,” in IEEE Transactions on Power Electronics, vol. PP, no. 99, pp. 1-1.
[19] M. S. Zaky and M. K. Metwaly, “A Performance Investigation of a Four-Switch Three-Phase Inverter-Fed IM Drives at Low Speeds Using Fuzzy Logic and PI Controllers,” in IEEE Transactions on Power Electronics, vol. 32, no. 5, pp. 3741-3753, May 2017.
[20] X. Zhang, L. Sun, K. Zhao and L. Sun, “Nonlinear Speed Control for PMSM System Using Sliding-Mode Control and Disturbance Compensation Techniques,” in IEEE Transactions on Power Electronics, vol. 28, no. 3, pp. 1358-1365, March 2013.