Abstract：Aim at the demands of the high efficiency and fast dynamic response for electric vehicle drive systems, an efficiency optimization control strategy of direct torque controlled induction motor drives is proposed. Firstly, considering the core losses, the mathematical model of induction motor is established in the stator-field-oriented frame. Secondly, the function relationship between the power losses and the output torque, speed and stator flux is analyzed, and the computational formulation of the stator flux amplitude which makes the power losses minimization is derived at different operation conditions. Consequently, the efficiency optimization control for direct torque controlled induction motor drive systems is achieved. The simulation and experimental results show that the proposed control method not only preserves the fast torque dynamic response, but also improves the operation efficiency of the driving system at light load and lengthens the travel distance of electric vehicles.
张兴华, 孙振兴, 王德明. 电动汽车用感应电机直接转矩控制系统的效率最优控制[J]. 电工技术学报, 2013, 28(4): 255-260.
Zhang Xinghua, Sun Zhenxing, Wang Deming. Optimal Efficiency Control of Direct Torque Controlled Induction Motor Drives for Electric Vehicles. Transactions of China Electrotechnical Society, 2013, 28(4): 255-260.
[1] Iuseppe G, Buja S, Marian PKazmierkowski. Direct torque control of PWM inverter-fed ac motors-a survey[J]. IEEE Trans. Industrial Electronics, 2004, 51(4): 744-757. [2] Abdelhakin Haddoun, Hohamed El Hachemi Benbouzid, Demba Diallo, et al. A loss minimization DTC scheme for EV induction motors[J]. IEEE Trans. Vehicular Technology 2007, 56(1): 81-88. [3] Takahashi I, Noguchi T. A new quick-response and high-efficiency control strategy of an induction motor[J]. IEEE Trans. Industry Applications, 1986, 22(5): 820-827. [4] 韩建群, 郑萍. 一种用于电动汽车的永磁同步电机直接转矩控制的简化方法[J]. 电工技术学报, 2009, 24(1): 76-80. Han Jianqun, Zheng Ping. A simplified direct torque control method of PMSM applied in electric vehicles [J]. Transactions of China Electrotechnical Society, 2009, 24(1): 76-80. [5] 崔纳新, 张承慧, 杜春水. 变频调速异步电动机效率优化控制的研究进展[J]. 电工技术学报, 2004, 19(5): 36-42 Cui Naxin, Zhang Chenghui, Du Chunshui. Advances in efficiency optimization control of inverter-fed induction motor drives[J]. Transactions of China Electrotechnical Society, 2004, 19(5): 36-42. [6] Famouri P, Cathey J. Loss minimization control of an induction motor drive[J]. IEEE Trans. Industry Applications, 1991, 27(1): 32-37 [7] Kouki Matsuse, Shotaro Taniguchi, Tatsuya Yoshizumi, et al. A speed-sensorless vector control of induction motor operating at high efficiency taking core loss in account[J]. IEEE Trans. Industry Applications, 2001, 37(2): 548-558 [8] Shahriyar Kaboli, Mohammad Reza Zolghadri, Esmaeel Vahdati Khajeh. A fast flux search controller for DTC-based induction motor drives[J]. IEEE Trans. Industrial Electronics, 2007, 54(5): 2407-2416 [9] Levi E. Impact of iron loss on behavior of vector controlled induction machines[J]. IEEE Trans on Industry Applications, 1995, 31(6): 1287-1296. [10] 李坷, 张承慧, 崔纳新. 考虑铁损的电动汽车用感应电机矢量控制及其能量优化策略[J]. 控制理论与应用, 2007, 24(6): 959-968. Li Ke, Zhang Chenghui, Cui Naxin. Vector control of induction motor for electric vehicle considering iron losses and its energy optimization strategy[J].Control Theory and Applications, 2007, 24(6): 959-968.
2013, Vol. 28 
