Super premium efficient line start-up permanent magnet synchronous motor

Induction motors are the workhorses of industry and represent nearly the entire installed base of constant-speed and most variable-speed motors. But the power factor and efficiency of induction motor are limited by its squirrel cage rotor. In the past, the colleagues all over the world tried to research and develop supper premium efficient electrical motor to replace the Premium^® efficient induction motor. The supper premium efficient line start-up permanent magnet synchronous motor is the one of choice for industry application. This paper presents the design and development of the supper premium efficient line start-up permanent magnet synchronous motors, including design techniques for key parameters and performances, advanced digital simulation for the design, improvement and verification, prototype build and test, design and test data analysis and comparison. This may increase the motor efficiency level while reducing the size and weight of the motor by reducing the amount of active material used. Also, the comparisons with Premium^® efficient induction motor on power factor, efficiency, material consumption, frame size, etc. are presented. The results show that the supper premium efficient line start-up permanent magnet synchronous motor has much better power factor, efficiency and power density, smaller frame size and less material consumption.