Transactions of China Electrotechnical Society  2015, Vol. 30 Issue (10): 101-107    DOI:
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A Direct Torque Control Strategy of Counter-Rotating Permanent Magnet Synchronous Motors
Jiang Yan, Huang Zhong, Cheng Shuangyin, Huang Shoudao
National Engineering Research Center of Energy Conversion and Control Hunan University Changsha 410082 China

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Abstract  Considering the problem of counter-rotating permanent magnet synchronous motor (CR-PMSM) out-of-step under unbalance load of bilateral rotor conditions, in this paper, a direct torque control(DTC) strategy based on the bilateral rotor torque angle was proposed from the analysis of mathematical model of CR-PMSM and the spatial relationship between the flux vector. This strategy can realize time-sharing control torque of bilateral rotor, by observing the bilateral rotor angle to real-time regulation of stator flux location. The simulation and experimental results show that the proposed strategy can maintain bilateral rotor speed synchronous tracking for a given speed accurately, and prevent the occurrence phenomenon of bilateral rotor out-of-step under unbalanced load disturbance.
Key wordsCounter-rotating permanent magnet synchronous motor      bilateral rotor of out-of-step      direct torque control      torque angle     
Received: 25 November 2013      Published: 29 June 2015
PACS: TM301.2  
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Jiang Yan
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Jiang Yan,Huang Zhong,Cheng Shuangyin等. A Direct Torque Control Strategy of Counter-Rotating Permanent Magnet Synchronous Motors[J]. Transactions of China Electrotechnical Society, 2015, 30(10): 101-107.
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