Disadvantages of DC Shunt Motor

What is a DC Shunt Motor?

At its core, a DC shunt motor is a direct-current electric motor intended to convert electrical energy into mechanical movement or we can say that it is a self-excited motor where field winding is connected in parallel to armature winding in order to supply voltage. Its name, “shunt,” alludes to how the field winding is associated in parallel with the armature winding. This setup permits the motor to keep an almost steady speed, independent of burden changes, making it an ideal decision for applications requiring consistent speed control....

Construction and Working Principles of DC Shunt Motor

The DC shunt motor development is equivalent to a DC motor . This motor can be developed with fundamental parts like field windings (stator), a commutator, and an armature (rotor). The functioning principle of a DC Shunt motor is, the point at which a DC motor is turned ON, then, at that point, DC streams all through the stator as well as the rotor. This current flow will produce two fields to be specific the pole as well as the armature. In the air gap among armature and field shoes, there are two attractive fields, and they will respond with one another for spinning the armature. The commutator overturns the armature current flow heading at standard gaps. So the armature field is repelled with pole field forever, it continues to spin the armature inside an equal direction....

Back EMF in DC Shunt Motor

Whenever the DC shunt Motor’s armature winding rotates inside the magnetic field which is produced by the field winding. In this way an E.M.F can be stimulated inside the armature winding based on the Faraday’s law (electromagnetic induction). Albeit, as per Lenz’s law, the induced E.M.F can act inside reverse direction toward the armature voltage supply....

Speed Control of DC Shunt Motor

The speed normal for a shunt motor is different contrasted and a series motor. As a DC Shunt motor achieves its complete speed, then, at that point, the armature current can be directly connected with the motor load. At the point when the load is incredibly low inside a shunt motor, then the armature current can also be below. At the point when the DC motor achieves its complete speed, then it stays stable....

Brake Test on DC Shunt Motor

The brake test is the one type of kind test on the dc shunt Motor. By and large, this test should be possible for the low-rated DC machines. The fundamental justification for doing this test is to determine the efficiency and also by utilizing this test, the output of mechanical power can be determined and separated the same by utilizing electrical input. So this is the reason to work out the efficiency of the DC motor, this test is used. Accordingly, this kind of test can’t be utilized on superior-rated machines. So it is basically done for the load test on the motor or DC Shunt motor or it can be done for the low rated DC machines....

Characteristics of DC Shunt Motor

Some of the characteristics of DC shunt motor are:...

Advantages of DC Shunt Motor

High Starting Torque: DC shunt motors give high starting torque, which is fundamental for applications that require the motor to turn over under a heavy load, like lifts, elevators and a few type of crushers. Speed Regulation: DC shunt motors offer great speed regulation over many loads. They can keep a somewhat constant speed in any event, when the load differs, which makes them reasonable for applications where reliable speed is required, for example, conveyor belts and certain industrial machinery. Durability: DC shunt motors are known for their robust construction and durability. They can endure hard core tasks and offer long service life with proper maintenance. Simple Control: DC shunt motors are generally simple to control. By changing the voltage provided to the motors, you can vary the speed and torque output. This simplicity in control makes them appropriate for different applications. Smooth Operation: DC shunt motors offer smooth and calm activity, making them reasonable for applications where commotion and vibrations should be limited....

Disadvantages of DC Shunt Motor

Limited Availability: DC shunt motors are turning out to be more uncommon in a ventures because of headways in engine innovation. Finding new parts or gifted specialists for upkeep can be trying in specific areas. Maintenance: DC shunt motors require more upkeep contrasted with a few different sorts of engines. Brush and commutator support is important to guarantee solid activity, and the brushes might should be supplanted occasionally. Brush Wear: The brushes and commutator in DC shunt motors can wear out over the long haul, prompting expanded upkeep expenses and margin time. Brush wear likewise restricts the most extreme speed of the motors. Limited Efficiency: DC shunt motors are less proficient than a few different kinds of engines, for example, AC enlistment engines. This lower proficiency can bring about higher working expenses, particularly for nonstop obligation applications. Size and Weight: DC shunt motors will quite often be bulkier and heavier contrasted with a few present day options like brushless DC motors. This can be a detriment in applications where space and weight are basic variables....

Applications of DC Shunt Motor

Industrial Machinery: DC shunt motors are many times utilized in modern hardware, including transports, blenders, siphons, and machine devices, where exact speed control and high starting torque are required. Elevators and Lifts: DC shunt motors are well-suited for lift systems, giving the essential high starting torque and smooth control for vertical transportation. Cranes and Hoists: Cranes and Hoists frequently use DC shunt motors in light of their capacity to deal with weighty loads and give exact speed control, which is pivotal for material taking care of hardware. Rolling Factories: DC shunt motors are utilized in moving plants to drive the rollers that shape and cycle materials like steel and aluminum. Their great speed guideline guarantees steady item quality. Print machines: DC shunt motors are utilized in print machines for controlling paper feed and print head development because of their capacity to keep up with steady speed under fluctuating loads. Textile Industry: DC shunt motors track down applications in the material business for driving winding around and turning machines, where exact control of thread tension and speed is basic. Paper Factories: DC shunt motors are utilized in paper factories to work hardware for cutting, rolling, and molding paper because of their solid exhibition and speed control....

Solved Example of DC Shunt Motor

A 240 V DC shunt motor having an armature resistance of 0.3 Ω carries an armature current of 40 Amps and runs at 600 RPM. If the flux is decrease by 15 % by the field rheostat. Find the speed of the motor expecting the load torque remains the same....

Conclusion

DC Motor was used widely because of its flexibility and reliability. This motor gives highlights like simple turning around control, speed guideline, and it is low to begin force. Hence, this motor can be utilized for belt-driven applications inside auto as well as modern applications. The DC shunt engine remains as a demonstration of dependability, flexibility, and persevering through prominence. Whether you are in a modern setting, driving a conveyor belt, controlling the speed of a rolling mill, or essentially changing the volume on an old stereo system, odds are good that you’ve experienced a DC shunt motors at work....

FAQs on DC Shunt Motor

What is a DC shunt motor?...