Optimum Performance of Permanent Magnet Synchronous Generators Coupled to Wind Turbines

In this paper a control algorithm for the efficiency improvement of permanent magnet synchronous generators (PMSG) is presented. The proposed algorithm reduces the losses of the generator without affecting its performances. In details, after a description of a dynamic model of the PMSG, which has been purposely modified in order to take into account the iron losses, the basic equations and the constraints to obtain the loss minimization are presented and discussed. Some simulations of a specific PMSG employing the proposed algorithm are performed. The results of these simulations show that enhancement of the efficiency up to 3% can be reached in comparison to a PMSG using a traditional control strategy.

[1]  M. Sanada,et al.  Sensorless output maximization control for variable-speed wind generation system using IPMSG , 2003, IEEE Transactions on Industry Applications.

[2]  Thomas M. Jahns,et al.  Interior Permanent-Magnet Synchronous Motors for Adjustable-Speed Drives , 1986, IEEE Transactions on Industry Applications.

[3]  Yoji Takeda,et al.  Current phase control methods for permanent magnet synchronous motors , 1990 .

[4]  V. I. John,et al.  Adaptive loss minimization control of inverter-fed IPM motor drives , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[5]  Donald W. Novotny,et al.  Efficient Operation of Surface-Mounted PM Synchronous Motors , 1987, IEEE Transactions on Industry Applications.

[6]  Rosario Miceli,et al.  Efficiency enhancement of permanent-magnet synchronous motor drives by online loss minimization approaches , 2005, IEEE Transactions on Industrial Electronics.

[7]  Shigeo Morimoto,et al.  Loss minimization control of permanent magnet synchronous motor drives , 1994, IEEE Trans. Ind. Electron..

[8]  R. S. Colby,et al.  An efficiency-optimizing permanent-magnet synchronous motor drive , 1988 .

[9]  F. Fernandez-Bernal,et al.  Model-based loss minimization for DC and AC vector controlled motors including core saturation , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[10]  Chunting Mi,et al.  Minimization of iron losses of permanent magnet synchronous machines , 2005 .

[11]  Christos Mademlis,et al.  Loss minimization in surface permanent-magnet synchronous motor drives , 2000, IEEE Trans. Ind. Electron..