基于二阶广义积分器-锁频环的异步电机同步角频率估计方法

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Abstract Although the integrator drift problem of the flux observers based on voltage model can be solved by using filters instead of pure integrator, it introduces the amplitude and phase errors. Considering the inaccuracy and bad dynamic performance of the traditional synchronous angular frequency estimation methods, a new method based on second order generalized integrator-frequency locked loop(SOGI-FLL) is proposed in this paper. The speed of the dynamical response of SOGI-FLL is theoretically analyzed. The synchronous angular frequency that is estimated through the new method can be used for dynamic compensation of variable flux observer systems, which can improve the accuracy of flux observer and is easy to implement in industrial application. An induction motor speed control system is built based on the vector control and controlled by TMS320F2812 DSP. Simulation and experimental results prove the effectiveness of the proposed method.

Key words： Flux observer dynamic compensation synchronous angular frequency vector control

Received: 08 July 2013 Published: 16 June 2014

PACS:

TM315

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	Articles by authors
	Xin Zhen
	Zhao Rende
	Guo Baoling
	Ma Shuai

Cite this article:

Xin Zhen,Zhao Rende,Guo Baoling等. New Induction Motor Synchronous Angular Frequency Estimation Method Based on Second Order Generalized Integrator-Frequency Locked Loop[J]. Transactions of China Electrotechnical Society, 2014, 29(1): 116-122.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I1/116

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