Sizing and optimal design of doubly salient permanent magnet motors

Development of the doubly salient permanent magnet (DSPM) motor has shown that the DSPM motor is of high efficiency, high power density with an extremely simple structure. The authors develop a methodology for sizing and optimal design of DSPM motors to meet various customer specified performance requirements. The approach is modeled on the one proposed by V.B. Honsinger (1987) for induction machines. This is a synthesizing process, linking the main dimensions of the motor to the specified performance. The basic principles of the DSPM motor are first reviewed. Next, the sizing relationships of the DSPM motor are explored, which serves as a means for design optimization of the motor. Design of a prototype DSPM motor is then given and, finally, a nonlinear program algorithm, the sequential nonlinear quadratic program (SNQP) is used to double check the methodology proposed