| 摘要 |
The invention relates to a method for identifying the magnetic anisotropy of an electric rotary field machine comprising a rotor and a stator. The rotary field machine is actuated by clocked terminal voltages according to a pulse width modulation method. At least four voltage vectors are set during one injection interval, wherein all of the voltage vectors have the same value in a space vector representation after a respective subtraction of the common average value, and the voltage vectors are orthogonal or anti-parallel to one another in pairs. In response to the four voltage vectors, a respective corresponding change of the current vector is ascertained, and the inputs of the anisotropy are inferred from each change of the current vectors while taking into consideration the voltage vectors. Such a method is easy to implement and offers the advantage of a very low computational complexity. |
