抄録
Permanent magnet synchronous (PM) motors are widely used for industrial applications. The PM motors generally have two classifications such as the surface permanent magnet (SPM) motors where the magnets are mounted on the cylindrical rotor surface and the interior permanent magnet (IPM) motors where the magnets are buried into the rotor core. The geometric difference affects the machine parameters as well as the operating characteristics of the PM motors. In this paper, the operating characteristics of SPM and IPM motors are examined and compared each other based on the several drive tests with respect to the three types of prototype PM motors, where the prototype PM motors have the same stator, but the rotor configurations are different. The suitable control method is also examined in order to expand the operating limits considering the current and voltage constraints. From the examinations, the features of PM motors such as SPM motor and IPM motor are discussed and the preferable applied fields are clarified.
