How do I control the speed of a DC motor?
The speed of a DC motor can be controlled by changing the voltage applied to the armature. The introduction of variable resistance in the armature circuit or field circuit allowed speed control. Modern DC motors are often controlled by power electronics systems which adjust the voltage by “chopping”…
Is the speed of a DC motor proportional to PWM?
The PWM signals controlling the speed of DC motor. In general, the speed of a DC motor is directly proportional to the supplied voltage. So if we reducing the supplied voltage from 9V to 4.5V similarly the speed of DC motor becomes half.
How do you control the speed of an electric motor?
The most efficient and inexpensive method for controlling the speed of an AC motor is a frequency drive inverter. Besides helping you conserve electric power, the inverter offers precise speed control.
What is constant speed DC motor?
Hence, a DC shunt motor is able to self-regulate its speed, and can be referred to as a constant speed motor. When a load is applied to a DC shunt motor, its speed decreases, but the motor is able to self-regulate and quickly compensate for the lost speed. Image credit: electrical4u.com Uses for DC shunt motors
Why can we control the speed of a DC motor?
By controlling the speed of the motor, you can vary the speed of the motor according to the requirements and can get the required operation . The speed control mechanism is applicable in many cases like controlling the movement of robotic vehicles, movement of motors in paper mills, and the movement of motors in elevators where different types of DC motors are used.
How can the speed of a DC motor be controlled?
The speed of DC motor can be controlled by this method by any one of the following ways – Field Diverter Method This method uses a diverter. Tapped Field Control This is another method of increasing the speed by reducing the flux and it is done by lowering number of turns of field winding through which current flows.
What are the speed control methods of a DC motor?
Speed Control Methods of a DC Motor Speed Control of Shunt Motors Speed Control of Series Motors Flux Control Method. In this flux control method, speed of the motor is inversely proportional to the flux. Armature Control Method. Voltage Control Method of DC Motor. Speed Control Of Series Motor.