Do voltage fluctuations in the input power supply affect motor operation?

Effect on output torque due to voltage fluctuations of the input power supply

The torque produced by a motor is sensitive to variations in the power supply voltage. This sensitivity arises from the fact that the torque is approximately proportional to the square of the input voltage.

As a result, a low input voltage can lead to inadequate torque output. On the other hand, a high input voltage may cause increased heat generation and vibrations, which can adversely affect the motor's performance and longevity.

To ensure optimal operation, it is essential to maintain a stable power supply that consistently meets the motor's voltage specifications.

AC motor speed torque curve affected by input voltage

Please note that the chart above is intended for illustrative purposes only.