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Efficiency Optimization Control of an IPMSM Drive System for Electric Vehicles (EVs)

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  • Control Theory and Applications
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Abstract

Electric vehicles are a key technology to decarbonize the transport sector where interior permanent magnet synchronous motors (IPMSMs) are the best performer at the heart of the electrical drive system. In order to optimize their operational efficiency, the model-based method associated with parameter identification is widely adopted. However, efficiency optimization and parameter identification in the existing methods are implemented independently by different strategies in a sequential execution manner, which does not produce an optimized system-level solution. In this paper, the two methods are combined to deal with a constrained optimization problem in an IPMSM drive. Firstly, the problem is converted into a variational problem based on the variational principle and projection dynamic theory. Then, a unified projection dynamic equation (UPDE) is used to estimate the parameters and determine the solution of optimal current (OC) of the IPMSM. Further, a recursive neural network (RNN) corresponding to the UPDE is developed to implement the developed fast efficiency optimization of the IPMSM drive. The results of simulation experiments show the proposed method is effective to identify motor parameters and determine the OC of the drive system rapidly and accurately. Thus, it can rapidly realize efficiency optimization of an IPMSM drive-system. Because the designed RNN can be easily implemented in the hardware, such as a field-programmable gate array (FPGA) or dedicated neural network chip, the method can achieve instantaneous efficiency optimization of the IPMSM drive system and therefore improve the widespread application of IPMSMs in EVs.

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Correspondence to Xiang-Ping Chen.

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This study was funded by National Natural Science Foundation of China (grant number 51867006, 51867007) and Natural Science and Technology Foundation of Guizhou province of China (grant number [2018]5781, [2018]1029).

Qin-Mu Wu received his Ph.D. degree in control science and engineering from Huazhong University of Science and Technology in Wuhan, China. And he received his B.S. degree in automation and M.S. degree in control science and engineering at Guizhou University of Technology in 2001. From 2001 to 2003, he was a worker with Huawei Technologies Company. He is currently a Professor and an M.S. Supervisor with the College of Electrical Engineering at Guizhou University. He has authored over 30 papers more than 10 articles included by SCI or EI. His current research interests include control theory and applications, networked control, electric vehicle transmission control, and deep learning.

Yu Zhan graduated from Guizhou University with a bachelor’s degree in measurement and control technology and instrumentation in 2019. Currently she is studying for a master’s degree in control science and engineering at Guizhou University. Her research interests include control theory and its applications, electric vehicles.

Mei Zhang received her doctorate degree in automation from Université Paul Sabatier of Toulouse, France in 2017. She is now an associated professor of Electrical Engineering School of Guizhou University, China. Her research interests are on the field of advanced control and diagnosis in real time of dynamic systems with emphasis on dynamical invertible system.

Xiang-Ping Chen received her Ph.D. degree in electronic and electrical engineering from University of Newcastle upon Tyne, UK, in 2013. She currently works at Guizhou University, China as a professor. Her research interests include renewable energy, energy management and energy storage technologies. Her expertise also lies in optimal operation in multi-vector energy systems and their applications in smart grids.

Weng-Ping Cao received his B.Eng. degree in electrical engineering from Beijing Jiaotong University, Beijing, China, in 1991, and a Ph.D. degree in electrical machines and drives from the University of Nottingham, Nottingham, U.K., in 2004. He is currently a Professor of the School of Electrical Engineering and Automation, Anhui University, P. R. China. His research interests include fault analysis and condition monitoring of electrical machines and power electronics. Prof. Cao is the Chairman for the Industrial Electronics Society, IEEE UK and Ireland Section, and also a “Royal Society Wolfson Research Merit Award” holder, U.K. He was a semi-finalist at the “Annual MIT-CHIEF Business Plan Contest”, U.S.A., in 2015; the “Dragon’s Den Competition Award” winner from Queen’s University Belfast, U.K., in 2014, the “Innovator of the Year Award” winner from Newcastle University, U.K., in 2013. He received the “Best Paper Awards” from the IET International Conference on Renewable Power Generation (RPG) in 2019, and the 9th International Symposium on Linear Drives for Industry Applications (LDIA) in 2013.

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Wu, QM., Zhan, Y., Zhang, M. et al. Efficiency Optimization Control of an IPMSM Drive System for Electric Vehicles (EVs). Int. J. Control Autom. Syst. 19, 2716–2733 (2021). https://doi.org/10.1007/s12555-019-0723-z

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