How does supply frequency affect the performance of the moto_Wolong Nanyang Explosion-proof Motor, China Motor Manufacturer

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How does supply frequency affect the performance of the moto

source：未知 time：2025-03-04 09:17nbsp; click：

Frequency is an important performance parameter for the normal operation of the motor. The industrial frequency motor matches the industrial frequency power supply, and there will be no power supply frequency mismatch; however, in order to solve the starting problem of the motor, it may be started through the frequency converter and then run in the industrial frequency band. For variable frequency motors, the output parameters of the motor operation process will be controlled by the frequency converter. For example, when the output frequency of the frequency converter is lower than the base frequency, the motor is in a constant torque output state; when the output frequency of the frequency converter is higher than the base frequency, the motor is in a constant power operation state; therefore, regardless of whether the motor is in a high-frequency or low-frequency operation state, constant torque or constant power ensures the safety of the motor operation, especially the independent fan of the variable frequency motor ensures the heat dissipation requirements of the motor during operation under different frequency operation states; in the actual application of the motor, the operating frequency of some variable frequency motors is relatively fixed, and the motor designer can also determine the motor as a self-fan cooling structure according to the actual operating characteristics.

For motors running at industrial frequency, the ventilation and heat dissipation structure of the motor is self-dissipating, that is, the inner fan or outer fan hood structure coaxial with the rotor operates and dissipates heat autonomously; when the power supply frequency decreases, the motor will have serious consequences such as heating or even burning of the windings due to the failure to meet the heat dissipation conditions; at the same time, when the output power of the motor remains unchanged, due to the reduction in motor speed, the motor's output torque will increase, and the motor's shaft, bearings and other structural parts may have quality risks. When the power supply frequency is high, if the motor's torque is not adjusted, the increase in speed will lead to an increase in motor power, and the corresponding current will increase. Once the rated current is exceeded, the motor's windings will face the risk of heating and burning.

Horizontal motor, NEMA motor, AC Induction motor

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