Abstract：A reduced structure of deatbeat direct torque control based on space vector modulation (SVM-DTC)is proposed in this paper. The main ideal is choosing the reference voltage vector in two phase stator reference frame previously and real-time calculating the pulse width of the reference voltage vector which diminish the error of torque. The improved structure not have to frequently logical judge and repeatedly solve a quadratic equation in extraordinary case. It has a higher dynamic response ability by contrast with the SVM-DTC and greatly improve the switching frequency and adjusting the torque more accurately in comparison with the classical DTC. The theoretical analysis and experimental results show that the proposed method retains the advantages of conciseness in classic DTC and improves the control performance.
廖永衡, 冯晓云, 王珍. 无差拍空间矢量调制直接转矩控制简化设计[J]. 电工技术学报, 2011, 26(6): 95-101.
Liao Yongheng, Feng Xiaoyun, Wang Zhen. Simplified Design of Deadbeat Direct Torque Control Based on Space Vector Modulation. Transactions of China Electrotechnical Society, 2011, 26(6): 95-101.
[1] Toshihiko Noguch, Seiji Kondo, Isao Takahashi, et al. A new quick-response and high-efficiency control strategy of induction motor[J]. IEEE Transactions on Industry Application, 1986, 22(5): 820-827. [2] Depenbrock M. Direkte selbstregelung (DSR) fur hochdynamische drehfeldantriebe mit umrichters- peisung[J]. ETZ Archiv, 1985, 7(7): 211-218. [3] 李夙．异步电动机直接转矩控制[M]. 北京：机械工业出版社, 1994. [4] Andreas Steimel. Direct self-control and synchronous pulse techniques for high-power traction inverters in comparison[J]. IEEE Transactions on Indusitrial Electronics, 2004, 51(4): 810-820. [5] 尚敬, 刘可安, 冯江华, 等．牵引电动机无速度传感器及带速度重投控制[J]. 中国电机工程学报, 2006, 26(15): 118-123． Shang Jing, Liu Kean, Feng Jianghua, et al．Speed sensorless control and restarting at unknown speed of traction motor[J]. Proceedings of the CSEE, 2006, 26(15): 118-123. [6] Hableter T G, Profumo F, Pastorelli M, et al．Direct torque control of induction machines using space vector modulation[J]. IEEE Transactions on Industrial Application, 1992, 28(5): 1045-1053. [7] Kim Jang Hwan, Choi JongWoo, Sul Seung Ki, et al. Novel rotor-flux observer using observer characteristic function in complex vector space for field-oriented induction motor drives[J]. IEEE Transactions on Industry Applications, 2002, 38(5): 1334-1343. [8] Casadei D, Profumo F, Tani A. FOC and DTC: two viable schemes for induction motors torque control[J]. IEEE Transactions on Power Electronics, 2002, 17(5): 779-787. [9] Casadei D, Serra G, Tani A. Implementation of a direct torque control algorithm for induction motors based on discrete space vector modulation[J]. IEEE Transactions on Power Electronics, 2000, 15(4): 769- 777. [10] Griva G, Habetler T G, Profumo F, et al. Performance evaluation of a direct torque controlled drive in the continuous PWM-square wave transition region[J]. IEEE Transactions on Power Electronics, 1995, 10(4): 464-471. [11] Griva G, Habetler T G, Profumo F, et al. Performance evaluation of a direct torque controlled drive in the continuous PWM-square wave transition region[J]. IEEE Transactions on Power Electronics, 1995, 10(4): 464-471.
2011, Vol. 26 
