In this paper, a simple method for frequency, amplitude and phase estimation of a single sinusoidal signal is proposed. The approach described herein uses an orthogonal signals generator based on a Second-Order Generalized Integrator (SOGI). The frequency, amplitude and phase are estimated on the base of straightforward explicit formulas without any adaption of SOGI parameters. The method is implemented as a dynamic third- or fourth-order system according to specified cost function to be minimized. In case of highly corrupted signal a double-SOGI scheme can be used to further improve the filtering capabilities. The effectiveness of the proposed algorithm is demonstrated through simulated experiments and comparisons with existing methods. (C) 2012 Elsevier Ltd. All rights reserved.
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Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R China
Zheng, Haoyang
Liu, Zeng
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Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R China
Liu, Zeng
An, Ronghui
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Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R China
An, Ronghui
Liu, Jinjun
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Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R China
Liu, Jinjun
Feng, Kaiwen
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Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R China
Feng, Kaiwen
Tu, Yiming
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Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Sch Elect Engn, Xian 710049, Peoples R China