ABSTRACT The double stator wound‐excited magnetic field modulation (WMFM) (DS‐WMFM) machine has two stators with field and armature windings, respectively, and the sandwiched rotor with iron pieces. This paper proposes a lumped parameter thermal model (LPTM) for the DS‐WMFM machine. A detailed method for calculating and constructing the LPTM for the DS‐WMFM machine is given in this paper. To validate the prediction accuracy of the established LPTM, four experimental tests including DC test, rated load test, variable condition test and overload test are conducted. The experiments results show that the maximum absolute error of the temperature can be limited within 6.25°C, 3.64°C and 6.14°C in rated load test, variable condition test and overload test, respectively.
Wang et al. (Thu,) studied this question.