Speed-Sensorless Vector Control of Primary Cascaded Linear Induction Motor

MA Jiaqing; ZHOU Dajin; ZHAO Lifeng; ZHANG Yong; ZHAO Yong

doi:10.3969/j.issn.0258-2724.2015.03.005

Volume 28 Issue 3

Jun. 2015

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Journal of Southwest Jiaotong University > 2015 > 28(3): 417-422.

MA Jiaqing, ZHOU Dajin, ZHAO Lifeng, ZHANG Yong, ZHAO Yong. Speed-Sensorless Vector Control of Primary Cascaded Linear Induction Motor[J]. Journal of Southwest Jiaotong University, 2015, 28(3): 417-422. doi: 10.3969/j.issn.0258-2724.2015.03.005

Citation:

MA Jiaqing, ZHOU Dajin, ZHAO Lifeng, ZHANG Yong, ZHAO Yong. Speed-Sensorless Vector Control of Primary Cascaded Linear Induction Motor[J]. Journal of Southwest Jiaotong University, 2015, 28(3): 417-422. doi: 10.3969/j.issn.0258-2724.2015.03.005

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Speed-Sensorless Vector Control of Primary Cascaded Linear Induction Motor

doi: 10.3969/j.issn.0258-2724.2015.03.005

MA Jiaqing^1,2,
ZHOU Dajin^1,2,
ZHAO Lifeng^1,2,
ZHANG Yong^1,2,
ZHAO Yong^{1,2,3
,
,}

Received Date: 20 Oct 2013
Publish Date: 25 Jun 2015

Abstract

Abstract

For investigating the performance of constant and adaptive speed regulation of cascaded linear induction motor (LIM) in maglev system, a new speed-sensorless vector controller was designed based on the Maxwell equations by analyzing the relationship between the thrust of the LIM and the current vector of the primary winding. The reasonability and the effectiveness of this controller were verified by numerical simulation using Matlab/Simulink. The results show that when facing small perturbation of the speed, the controller can automatically adjust the DC bus voltage of the rectifier through the inner current loop and the outer voltage loop to stabilize the speed within 10 ms. When receiving the reference speed value, the frequency of the AC side of the inverter is regulated to obtain a suitable value of the synchronous speed; the regulating time is less than 50 ms and within 3 cycles of power frequency, meeting the requirements of control performance in maglev system.
- LIM(linear induction motor),
- continuous thrust,
- outer voltage loop,
- reference speed

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References(51)

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Speed-Sensorless Vector Control of Primary Cascaded Linear Induction Motor

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