# Can single phase motors be speed controlled?

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## Can you put a speed control on any electric motor?

Yes, you can use voltage to control the speed of an AC motor. NOTE: top speed is ~1500 r/min because the input power is at 50 Hz. For 60 Hz motors, the 1500 r/min would be 1800 r/min.

## Can you control the speed of an AC motor?

The most common way of controlling AC motor speed is changing the motor’s frequency. … The AC frequency can be adjusted using a six-step inverter, vector flux or pulse-width-modulation. A six-step inverter or variable voltage inverter rectifies the AC power to DC power, and then switches to imitate a sine wave.

## Can I use a VFD on a single phase motor?

In general single phase motors cannot be run with VFDs. However, it is possible to input single phase to a VFD and output variable voltage to a 3-phase induction motor.

## What determines the speed of a single phase motor?

Single-phase means that only one voltage waveform is applied to the motor. … The number of poles dictates the rpm of the motor. Standard synchronous speeds available are; 900, 1,200, 1,800, and 3,600 rpm. An induction motor turns slightly slower than a synchronous motor and takes the form of a squirrel-cage motor.

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## Which motor has widest variety of methods for speed control?

Has relatively wider range of speed control.

• A. Synchronous motor.
• Ship ring induction motor.
• Squirrel cage induction motor.
• D.C. shunt motor.

## Can you make any motor variable speed?

To have electronically variable speed you will either need a universal/dc motor with PWM speed controller or a 3-phase inverter-duty induction motor with a variable-frequency inverter to control its speed.

## Can any DC motor be variable speed?

A: In general if you don’t do anything special to it, a DC motor will have variable speed. The main factors are the DC voltage applied to the armature coil and the amount of torque load you are trying to drive. In order to make it into a constant speed DC motor you have to have some sort of electronic feedback.