Design of Small Wind Turbine with Maximum Power Point Tracking Algorithm

Innovative Construction of the AFPM-Type Electric Machine and the Method for Estimation of Its Performance Parameters on the Basis of the Induction Voltage Shape

“…The proposed method of rotor angular speed estimation ω and the angle of rotation θ makes use of the Jacobian matrix [39,40] formulated according to the following dependency (8). The values of magnetic flux derivatives from permanent magnets coupled with stator winding are expressed in a time-invariant system α, β.…”

“…In the described process of generator performance parameter estimation, the assumption that was adopted is that T L = 0. The variability of the estimated vector of generator condition d dt XEst is determined by using the first two rows of Jacobian matrices (8) and voltage equations in the system of αβ in the way defined by the dependency (13) 13) appear directly in the first two rows of the matrix J from Equation (8).…”

“…One may observe an increasing interest in the application of electric machines of the axial flow of magnetic field in many industrial applications as an alternative to machines of conventional construction. The reason for this situation is that the geometric features of these devices (very big ratio of machine diameter to its axial length) predisposes this type of constructions for such applications as integrated alternators with a combustion engine [1], drive systems of electric vehicles [2][3][4][5], or generators functioning in systems with wind turbines [6][7][8] in particular with the vertical axis of rotation [9,10]. With regard to such a wide range of various applications, there have been many variants of machine constructions with axial flow permanent magnets (AFPM) [11][12][13][14][15][16].…”