基于最大转矩电流比的同步磁阻电机DTC-SVM控制策略

doi:10.19595/j.cnki.1000-6753.tces.181688

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Abstract Synchronous reluctance motor (SynRM) has simple structure, low cost and high temperature resistance. However, its efficiency, power factor and other performance need to be improved. Direct torque control (DTC) can improve the torque response of SynRM. In this paper, space vector modulation (SVM) technology is used to improve the performance of traditional DTC. The control model is established on the a-b axis and only one PI controller is added. While maintaining the advantages of traditional DTC, such as simple control structure and fast torque response, the track of the stator flux linkage is more similar to a circle, thereby effectively reducing the torque ripple. In addition, considering the influence of saturation, the maximum torque per-ampere (MTPA) strategy is introduced to the improved DTC. The motor is controlled accurately to further reduce copper losses. The simulation and experimental results show that the control strategy has good performance. The SynRM presents fast speed and torque responses, small torque ripple and smooth flux track under the control.

Key words： Synchronous reluctance motor (SynRM) direct torque control (DTC) space vector modulation (SVM) maximum torque per-ampere (MTPA) strategy saturation and cross saturation

Received: 31 October 2018 Published: 17 January 2020

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TM341

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	Xu Xinyuan
	Wang Yunchong
	Shen Jianxin

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Xu Xinyuan,Wang Yunchong,Shen Jianxin. Direct Torque Control-Space Vector Modulation Control Strategy of Synchronous Reluctance Motor Based on Maximum Torque Per-Ampere[J]. Transactions of China Electrotechnical Society, 2020, 35(2): 246-254.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181688 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I2/246

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