Design of doubly salient permanent magnet motor for small displacement ISG mild hybrid

The performance of hybrid motor directly affects hybrid vehicle performance and fuel economy. In this paper, doubly salient permanent magnet motor is selected as vehicle motor of small displacement ISG mild hybrid. Magnet field superposition method is proposed to analyze the static characteristics of doubly salient permanent magnet motor. Namely, the "partition method" is adopted to analyze magnet field static characteristics when excitation windings operate alone. Then two-dimensional finite element is adopted to analyze magnet field static characteristics when permanent magnet operates alone. Doubly salient permanent magnet motor static characteristics are obtained by superposition, and motor structural parameters are designed through analogy. Finally, through physical prototype test, objectively test the performance of the prototype design to achieve the research and design of hybrid doubly salient permanent magnet motor.