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研究生： 制越花
Che Viet hoa
論文名稱： 基於馬達常數之最佳化方法以提升電助自行車輪殼馬達高效率操作區間
An Optimization Method to Maximize High-Efficiency Operating Range of E-bike Hub Motor based on Motor Constant
指導教授： 謝旻甫
Hsieh, Min-Fu
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2022
畢業學年度： 110
語文別： 英文
論文頁數： 83
外文關鍵詞： Spoke type permanent magnet motor, motor constant, high torque density, magnetic flux leakage, flux concentration factor, optimization
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    • A Motor constant can be used to evaluate the performance and efficiency of electrical motors; however, iron loss is not considered in the convention motor constant definition. This thesis proposes a new definition of motor constant that includes both iron loss and copper loss of electric motors to make it become a comprehensive indicator for motor performance and efficiency. Many factors in motor design must be considered in order to improve the efficiency and the performance of permanent magnet synchronous machine at the same time. Therefore, the multi-objective optimization methods are often used to maximize the motor efficiency, although it has inherent drawbacks of complicated algorithms and huge computation cost to work with finite element analysis. By using the proposed motor constant, the multi-objective optimization problem is converted into a single objective optimization problem, thereby simplifying the optimization method. Genetic algorithm (GA) optimization method using motor constant as the fitness function is employed to find the optimal parameters of the motor stator to maximize high-efficiency operating range of the motor. The research results show that the new motor constant can accurately present the motor efficiency, and based on it, the Genetic Algorithm optimization method can provide optimal design with better high-efficiency operating range. The electromagnetic characteristics of the motor designs are investigated and verified by finite element analysis with JMAG software. Finally, a 250W motor, whose performance had matched the requirements of the E-bike application, is fabricated to test its performance to verify the accuracy of simulation analysis.

    Abstract I Acknowledge Ⅲ Contents Ⅳ List of Figures and Tables Ⅵ CHAPTER 1. INTRODUCTION 1 1.1 Application Requirements 1 1.2 Motivation 4 CHAPTER 2. LITERATURE REVIEW 6 2.1 Mathematical Modelling 6 2.2 Loss Analysis of Permanent Magnet Synchronous Machine 11 2.3 Different Topologies of PMSM 13 2.4 Optimization Method 17 CHAPTER 3. BASIC DESIGN OF A SPOKE-TYPE MACHINE 19 3.1 Equivalent Magnetic Circuit of PMSM 19 3.2 Application Requirement 24 3.3 Design Process of Spoke-Type Machine 25 3.3.1 Determination of Torque Constant and Back-EMF constant 27 3.3.2 Selection of Slot/Poles Combination and TRV 28 3.3.3 Preliminary design 30 3.3.4 Magnetic Loading and Electrical Loading 33 3.3.5 Rotor Arc Poles Shaping to Reduce Cogging Torque 36 3.3.6 Bridge Design to Reduce Leakage Flux 39 3.4 Simulation Results 42 CHAPTER 4. OPTIMIZATION METHOD BASED ON NEW DEFINITION OF MOTOR CONSTANT 49 4.1 Definition of Motor Constant 49 4.1.1 New Definition of Motor Constant 50 4.1.2 Validation of Performance Indicator Km 52 4.2 Optimization Method 53 4.2.1 Genetic Algorithm (GA) 53 4.2.2 Genetic algorithm (GA) Optimization Method Using New Definition of Motor Constant 56 4.3 Optimization Result 59 4.4 Performance Comparison between Optimized Design and Initial Design 61 4.5 Comparison between Conventional Motor Constant and Proposed Motor Constant 65 CHAPTER 5. PROTOTYPING AND TESTING 69 5.1 Introduction 69 5.2 Prototype 70 5.3 Experiments 72 5.3.1 No-load Test 72 5.3.2 Rated Load Test 74 5.4 Summary 76 CHAPTER 6. CONCLUSION AND FUTURE WORK 78 6.1 Conclusions 78 6.2 Future works 79 REFERENCES 80

    [1]. "Analysis of Bicycle Industry Trend", [online]:https://www.market-prospects. com/articles/bicycle-industry-trend.
    [2]. M. Si, X. Yu Yang, S. Wei Zhao, S. Gong. "Design and analysis of a novel spoke‐type permanent magnet synchronous motor". IET Electric Power Applications. 2016;10(6):571-80.
    [3]. Y. Zhang, W. Cao, S. Mcloone, J. Morrow. "Design and Flux-Weakening Control of an Interior Permanent Magnet Synchronous Motor for Electric Vehicles". IEEE Transactions on Applied Superconductivity. 2016;26(7):1-6.
    [4]. "MCU with FPU allows advanced Motor Control Solutions", [online]:https://www.powersystemsdesign.com/articles/mcu-with-fpu-allows-advanced-motor-control-solutions/30/5447.
    [5]. M. De Soricellis, H. Rapp. "Current and voltage shaping method via modified d–q transformation for the torque ripple compensation in PMSMs". The Journal of Engineering. 2019;2019(17):3812-7.
    [6]. T.-Y. Ho, C.-K. Huynh, T.-H. Lin, S.-W. Yang. "The Design and Implementation of a Sensorless Power Tool Based on a Microcontroller". Electronics. 2020;9(6).
    [7]. C.J. O'rourke, M.M. Qasim, M.R. Overlin, J.L. Kirtley. "A Geometric Interpretation of Reference Frames and Transformations: dq0, Clarke, and Park". IEEE Transactions on Energy Conversion. 2019;34(4):2070-83.
    [8]. Naggar H. Saad, Ahmed A. El-Sattar, M.A. Gad. "Sensorless Field Oriented Control Based on Improved MRAS Speed Observer for Permanent Magnet Synchronous Motor Drive". 2016 Eighteenth International Middle East Power Systems Conference (MEPCON)2016. p. 991-8.
    [9]. "What Is a Motor?", [online]: https://www.nidec.com/en/technology/motor/ basic/00001/.
    [10]. M.-R.P.D.-Y. Kim. "Design of High Torque Density Multi-Core Concentrated Flux-type Synchronous Motors considering Vibration Characteristic". 2017 IEEE International Electric Machines and Drives Conference (IEMDC)2017.
    [11]. G.-H.K. Byoung-Kuk Lee. "Design of spoke type BLDC motors with high power density for traction applications".
    [12]. P.C.-K. Luk, H.A. Abdulrahem, B. Xia. "Low-cost high-performance ferrite permanent magnet machines in EV applications: A comprehensive review". eTransportation. 2020;6.
    [13]. S.G. Lee, J. Bae, W.-H. Kim. "A Study on the Maximum Flux Linkage and the Goodness Factor for the Spoke-Type PMSM". IEEE Transactions on Applied Superconductivity. 2018;28(3):1-5.
    [14]. K.S. Kim, B.H. Lee. "Comparative study of concentrated flux synchronous motor and multi‐layer IPMSM for traction drives using non‐rare earth permanent magnet". IET Electric Power Applications. 2020;14(9):1686-91.
    [15]. A. Konak, D.W. Coit, A.E. Smith. "Multi-objective optimization using genetic algorithms: A tutorial". Reliability Engineering & System Safety. 2006;91(9):992-1007.
    [16]. X. Sun, Z. Shi, G. Lei, Y. Guo, J. Zhu. "Multi-Objective Design Optimization of an IPMSM Based on Multilevel Strategy". IEEE Transactions on Industrial Electronics. 2021;68(1):139-48.
    [17]. G. Lei, J. Zhu, Y. Guo, C. Liu, B. Ma. "A Review of Design Optimization Methods for Electrical Machines". Energies. 2017;10(12).
    [18]. D.F. Jones. "Multi-objective meta-heuristics: An overview of the currentstate-of-the-art". European Journal of Operational Research 137 (2002) 1-9. 2001.
    [19]. P. Bajpai. "Genetic algorithm–an approach to solve global optimization problems". Indian Journal of computer science and engineering 2010.199–206.
    [20]. D. Hanselman. Brushless Permanent Magnet Motor Design: Midpoint Trade Books Inc; 2003.
    [21]. "36V 17.4Ah Super High Power Lithium Ion Battery" [online]:https://www. bixpower.com/BAT-BX3618-p/bat-bx3618h.htm.
    [22]. Y.-Y. Choe, S.-Y. Oh, S.-H. Ham, I.-S. Jang, S.-Y. Cho, J. Lee, et al. "Comparison of Concentrated and Distributed Winding in an IPMSM for Vehicle Traction". Energy Procedia. 2012;14:1368-73.
    [23]. A.M. El-Refaie, T.M. Jahns. "Optimal Flux Weakening in Surface PM Machines Using Fractional-Slot Concentrated Windings". IEEE Transactions on Industry Applications. 2005;41(3):790-800.
    [24]. E. Carraro, N. Bianchi, S. Zhang, M. Koch. "Design and Performance Comparison of Fractional Slot Concentrated Winding Spoke Type Synchronous Motors With Different Slot-Pole Combinations". IEEE Transactions on Industry Applications. 2018;54(3):2276-84.
    [25]. "Product manual: Electrical steel", [online]:https://www.csc.com.tw/ csc/pd/doc/spec_es_e_2016.pdf.
    [26]. S.-B.R. Kyu-Yun Hwang. "Shape Optimization of Rotor Pole in Spoke type Permanent Magnet Motor for Reducing Partial Demagnetization effect and Cogging Torque". Proceeding of International Conference on Electrical Machines and Systems 2007, Oct 8~11; Seoul, Korea 2007.
    [27]. M. Onsal, B. Cumhur, Y. Demir, E. Yolacan, M. Aydin. "Rotor Design Optimization of a New Flux-Assisted Consequent Pole Spoke-Type Permanent Magnet Torque Motor for Low-Speed Applications". IEEE Transactions on Magnetics. 2018;54(11):1-5.
    [28]. G.Z. X, Q, Zhu. J, B, Li. J, T, Chen., editor A spoke-type IPM machine with novel alternate airspace barriers and reduction of unipolar leakage flux by step-staggered rotor. 2015 IEEE International Electric Machines & Drives Conference (IEMDC); 2015 10-13 May 2015; Coeur d'Alene: IEEE.
    [29]. D. Beasley, D.R. Bull. "An Overview of Genetic Algorithms : Part 1, Fundamentals". 1993.
    [30]. "Genetic Algorithm in AI", [online]:https://www.gatevidyalay.com/genetic-algorithm-in-ai-operators-working/.
    [31]. M.F. Bramlette. "Initialization, Mutation and Selection Methods in Genetic Algorithms for Function Optimization.". ICGA. 1991.
    [32]. "42 big motor coil inserting machine", [online]: https://www.youtube.com/ watch?v=cBme1llBnaY.

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