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gurpreet_leh
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how dc shunt motors are different from the simple dc motors and is there any relation between between generators
gurpreet_leh said:how dc shunt motors are different from the simple dc motors and is there any relation between between generators
Bob S said:The attached URL has torque vs RPM curves for four different types of dc brush motors, the most common of which are the shunt wound, the series wound, and the permanent magnet. The shunt wound dc brush motor has the flattest torque curve. See
http://www.reliance.com/mtr/mtrthrmn.htm
Bob S
I saw that, and was also puzzled.Phrak said:I took a quick glance at the link. Why is the shunt wound DC motor speed-torque curve different than a permanent magnet motor. I find this suprizing. Both would seem to have a constant applied flux. Do you happen to know?
A DC shunt motor is a type of direct current (DC) motor that consists of a stator (stationary part) and a rotor (rotating part). It is called a "shunt" motor because the field winding is connected in parallel (shunt) with the armature winding. This type of motor is commonly used in applications that require a constant speed, such as in industrial machinery and appliances.
A DC shunt motor works by using the forces of attraction and repulsion between two magnetic fields to create motion. When an electric current is passed through the armature winding, it creates a magnetic field that interacts with the magnetic field produced by the field winding. This interaction causes the rotor to rotate, and the speed of rotation is controlled by adjusting the input voltage.
One advantage of using a DC shunt motor is its ability to maintain a constant speed regardless of the load. This makes it suitable for applications that require a consistent output, such as in conveyor belts or pumps. Additionally, DC shunt motors have a simple design and are relatively easy to control and maintain.
One limitation of a DC shunt motor is its speed regulation. While it can maintain a constant speed under varying loads, it cannot adjust its speed to match changing load conditions. DC shunt motors also require regular maintenance, including brush replacements and commutator cleaning, to ensure optimal performance.
The speed of a DC shunt motor can be controlled by adjusting the input voltage. Increasing the voltage will increase the speed, while decreasing the voltage will decrease the speed. Additionally, using a variable resistor or electronic speed controller can provide more precise speed control. Some DC shunt motors also have built-in speed control mechanisms, such as a centrifugal switch or variable field resistance.