Features Constant speed, achieving synchronous speed. High power factor: A well-designed motor can achieve a power factor close to the value of 1.0. Compact size, lightweight, and low noise. High efficiency: During normal operation, there is no copper loss in the rotor. The high power factor results in a smaller rotor current and reduced copper losses in the rotor windings. The motor's speed is directly proportional to the frequency, simplifying the control system. The motor can be designed with multiple stages and low-speed high-torque capabilities, eliminating the need for a gearbox and enabling gearless transmission. Wide speed range, with a high-speed design that can reach up to 10,000 revolutions per minute (rpm).