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Vol. 159, Issue 11, November 2013, pp. 190-197




Research on a Novel Deadbeat Hybrid Flux Observer
1 Guifeng Wang, 1 Jianguo Jiang, 1 Shutong Qiao, 2 Fangtian Zhu

1 School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University Shanghai 200030 China

2 School of Information and Electrical Engineering, China University of Mining and Technology Xuzhou 221116 China

Tel: 008613813459613, fax: 008651683882453
E-mail: wgfmy@126.com


Received: 29 August 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems


Abstract: The stability and accuracy of induction motors is seriously influenced by the flux observer. The improvement of motor is restricted by the sensitivity of traditional open-loop current and voltage flux observer to the motor parameter under low or high speed. In order to improve the accuracy and stability of flux observer, a novel close-loop flux observer is implemented, which include the current and voltage flux observer cooperated with phase-compensated transition function. The accuracy and insensitivity to motor parameter are insured in the whole speed range; what's more, the deadbeat stator current observer is added to solve the one sample cycle delay. By the observer characteristic function being utilized to analysis flux observer, along with the simulation and experiment, the accuracy and stability are verified.


Keywords: Hybrid flux, Motor parameter, Sensitivity, Transition function, Deadbeat, Current observer.


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