Yi-Kyu Kang, Hae-Gwang Jeong, Kyo-Beum Lee, Dong-Choon Lee, and Jang-Mok Kim, “Simple Estimation Scheme for Initial Rotor Position and Inductances for Effective MTPA-Operation in Wind-Power Systems using an IPMSM,” Journal of Power Electronics, vol. 10, n > Paper

This paper presents simple schemes used to estimate the initial rotor position and the d- and q-axis inductances for effective

Maximum Torque per Ampere (MTPA) operation in a wind-power system using an IPMSM (Interior Permanent Magnet Synchronous

Machine). An IPMSM essentially requires an exact coordinate transformation and accurate inductance values to use a reluctance

torque caused by the saliency characteristic. In the proposed high-frequency voltage testing method, there is no voltage drop caused

by the resistance and the electromotive force. The initial rotor position and the inductance can be measured through an analysis of

the stator current without turning the rotor. The experimental results are presented in order to illustrate the feasibility of the

proposed method.