Greater efficiency for electric vehicle motors is demanded nowadays. Significantly, higher efficiency of permanent magnetic type synchronous motor is possible, particulary for the IPM(interior permanent magnetic type) synchronous motor which has great mechanical strength and high efficiency because it uses the reluctance torque efficiently. However, the IPM motor's are influenced by not only induced voltage harmonic but also cogging torque. This paper describes the examinations of magnetic form for the IPM motor. The IPM moter's of trapezoid magnet form with gap have proved characteristics of the induced voltage sinewave form and high efficiency and low cogging torque.
- A member of IEEJ can access the transactions of the Technical Society to which the member belongs. Please enter the My Page login ID in the subscriber number column and the birth date (year/month/date with one-byte characters: for example, 19800303) in the password column.
The transactions of the Institute of Electrical Engineers of Japan.C
The transactions of the Institute of Electrical Engineers of Japan.B
The transactions of the Institute of Electrical Engineers of Japan.A
The Journal of the Institute of Electrical Engineers of Japan