Permanent Split Capacitor Motor Speed Control

The kbwc series provides infinitely variable speed motor control for shaded pole permanent split capacitor and universal ac dc motors.

Permanent split capacitor motor speed control.

Permanent split capacitor psc motor the permanent split capacitor motor also has a cage rotor and the two windings named as main and auxiliary windings similar to that of a capacitor start and capacitor start capacitor run motor. Permanent split capacitor psc motors are the most popular type of single phase induction motors. Permanent split capacitor motor another variation is the permanent split capacitor or psc motor. 4 permanent split capacitor psc motor.

Units help operate universal shaded pole and psc 1 phase ac motors used to run fans blowers pumps vibratory feeders and heating and lighting applications. 19 also known as a capacitor run motor this type of motor uses a non polarized capacitor with a high voltage rating to generate an electrical phase shift between the run and start windings. This capacitor is permanently connected in series with the start winding. Speed control of permanent split capacitor motors january 22 2015 the speed of a permanently split capacitor motor can be adjusted by connecting it to a variable voltage source such as an auto transformer.

The permanent split capacitor motor will sometimes use an extra capacitor to aid in starting. It has only one capacitor connected in series with the starting winding. This will cause the start winding an auxiliary winding once the motor reached the running speed. The full wave phase control circuitry minimizes power loss thereby reducing energy requirements.

The controls provide infinitely variable speed adjustment which allows the end user to select the desired level of air volume. Adjustable ac speed controls from grainger can operate on 60 50 hz at plus or minus 10 rated line voltage. A permanent split capacitor psc motor has a run type capacitor. This article will discuss different techniques and drive topologies to control the speed of a psc motor in one and two directions.

A photograph of a permanent split capacitor motor is shown in figure 11 25. The permanent split motor also called capacitor motor uses the same value of capacitance for both starting and running operations. A microcontroller is the brain of the system.