When choosing a electric motor for a credit card applicatoin, a primary consideration is the speed range it will be speed reducer gearbox operated in. Whenever a motor is operate considerably slower than its rated base speed, several potential adverse effects may come into play, including reduced cooling performance, reduced power effectiveness and a alter in the motor’s acceleration and torque features. To mitigate this problem, some motors and acceleration controllers have already been designed especially to operate a vehicle a load at low speeds with precise control.

Most domestic and industrial motor applications use 3-phase asynchronous induction motors, which operate at a speed that’s determined by the frequency of the supply power. When an application operates at a constant speed, the only thing that is necessary could be a gearbox or rate reducer that brings the motor speed down to the required level. Nevertheless, many applications need the velocity of the motor to be various during operation.

This is usually achieved using a VFD or Adjustable Frequency Drive, which controls the speed by modifying the frequency fed to the motor. Deciding on the best electric motor and VFD type depends on a variety of factors, however, it is necessary to first look at the way the characteristics of a electric motor change when the quickness is reduced.

A motor usually includes a base speed, specific by the product manufacturer, that it is designed to operate at. However, if a motor is managed below the bottom speed, it could experience reduced effectiveness of the cooling system. Especially with commonly used Totally Enclosed Lover Cooled (TEFC) and ODP (Open Drip Evidence) motors, where the cooling system consists primarily of a shaft-mounted enthusiast, a reduction in speed outcomes in decreased airflow over the motor and loss of cooling, and temperature buildup occurs. Especially when the engine is operated with full torque at low speeds, heat can easily build up in the motor to harmful levels.