When the power supply voltage is constant, reducing the frequency will increase the magnetic flux and the excitation current, resulting in an increase in the motor current and copper consumption, which will eventually lead to an increase in the temperature rise of the motor.
Enneng permanent magnet motor system uses a low-speed, high-torque motor and controller to replace the original motor and frequency converter, cancels the reducer in the original transmission mechanism, simplifies the mechanical structure of the system