Circuit Schematic Diagram Three Phase AC Motor Speed Control

Three phase AC motor speed controller is a three phase sine wave power inverter with variable frequency. Since the motor is synchronized with the line frequency, to control the speed of three phase AC motor can be done by controlling the frequency of the power line supply. Even thought three phase power inverter is a complex circuit, there is an integrated circuit to fulfill this purpose. The schematic circuit diagram is as follows :

3 phase ac motor - 1

3 phase ac motor - 2

The component values shown only that for OB2 channel. The others are similar. Please be careful when designing the layout, because this motor controller use optical isolation. Low and high voltage network have to be separated clearly. This is to minimize the risk of hazardous electrical shock.

10 thoughts on “Circuit Schematic Diagram Three Phase AC Motor Speed Control

  1. Latoria Bosell

    There are several different types of electrical motors for sale on online sites and you can easily purchase it online and get them delivered through the fast delivery and shipping process. The electric motors for sale are available in single phase, three phase electrical motors and also I HP electrical motors. You need to make the right choice for whichever purpose you tool for. Which electric motor is your favorite? We can help you find many for sale.

  2. risoma

    Ola estou trabalhando, para fazer um carrinho eletrico ou adaptar o meu carro ocm um motor eletrico estou recolhendo todas as informaçoes sobre motores potentes e controladores de velocidades…se qlguem tiver algo para eu estudar me manda agradecido

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