In the case of ac motor, the voltage will be higher or lower in constant voltage, which will affect the motor.
The frequency can affect the speed of the motor, the frequency is high, the motor speed is fast, the frequency is low, the motor speed is slow. The increase of frequency makes the electric motor feel resistant to increase, the voltage is high, the current decreases if the voltage is constant. The decrease of the frequency of the power supply makes the motor feel less resistant, the voltage is low, and if the voltage is constant, the current increases, and the magnetic saturation is possible.
The frequency can affect the speed of the motor, the frequency is high, the motor speed is fast, the frequency is low, the motor speed is slow. Of course, the high frequency of the motor will be higher, but the fan will also be faster, so there is basically no effect.
Induction ac motor, power frequency rise will increase the speed, the rising frequency motor inductance, the current will be reduced, current motor temperature rise will decline. When the frequency of the power supply decreases, the motor speed decreases, the electric current is raised by the decrease of the motor's inductance, and the temperature rises.
