Volts/hertz control of three phase induction motor.

Thread starter Encoder
Start date Mar 15, 2013
Tags

Control Induction Induction motor Motor Phase Three phase

In summary, volts/hertz control is a method of regulating the speed of a three phase induction motor by adjusting the voltage and frequency of the power supply. It works by keeping the voltage and frequency in a constant ratio, resulting in smooth and efficient speed control. While it is a simple and cost-effective method, it may not be suitable for applications where precise speed control is required and has a limited range compared to other methods. Volts/hertz control is most commonly used for squirrel cage induction motors and may not be suitable for other types of induction motors.

Mar 15, 2013

Encoder

I am doing project on open loop v/f control of three phase induction motor. How to decide the frequency and amplitude of triangular wave(carrier wave) for sinusoidal PWM ?

Engineering news on Phys.org

Mar 15, 2013

Averagesupernova

Science Advisor

Gold Member

I have wondered this in the past and of course do not know the answer. If you find out elsewhere, let us know please.

What is volts/hertz control of three phase induction motor?

Volts/hertz control is a method used to regulate the speed of a three phase induction motor by adjusting the voltage and frequency of the power supply. It is also known as V/f control.

How does volts/hertz control work?

In volts/hertz control, the voltage and frequency are kept in a constant ratio. As the frequency increases, the voltage is also increased proportionally, resulting in a constant volts/hertz ratio. This allows for smooth and efficient control of the motor's speed.

What are the advantages of volts/hertz control?

Volts/hertz control is a simple and cost-effective method for controlling the speed of a three phase induction motor. It also provides good torque control and allows for a wide range of speed control.

What are the limitations of volts/hertz control?

One limitation of volts/hertz control is that it is not suitable for applications where precise speed control is required. It also has a limited range of speed control compared to other methods such as variable frequency drives.

Can volts/hertz control be used for all types of three phase induction motors?

Volts/hertz control is most commonly used for squirrel cage induction motors. It may not be suitable for wound rotor or synchronous induction motors, as they may require different methods of speed control.