Dc Series Motor

November 06, 2024 Post a Comment

Dc series motor

The DC motor is the motor which converts the direct current into the mechanical work. It works on the principle of Lorentz Law, which states that “the current carrying conductor placed in a magnetic and electric field experience a force”. And that force is the Lorentz force.

What are the types of DC series motor?

There are 4 main types of DC motors:

Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux.
Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current. ...
Shunt DC Motors.
Compound DC Motors.

What is the main advantage of a DC series motor?

Good speed control DC motors offer highly controllable speed. By changing the armature or field voltage it's possible to achieve wide speed variation and with this level of controllability, DC motors offer the precision required by a wide range of industry applications.

What are the 3 types of DC motors? Types of DC Motor Series DC Motor. Shunt/Parallel DC Motor. Compound DC Motors. Permanent Magnet DC Motor. Types of DC Motor - Series, Shunt, Compound, Permanent Magnet https://byjus.com › physics › types-of-dc-motor Search for: What are the 3 types of DC motors?

Types of DC Motor

Series DC Motor.
Shunt/Parallel DC Motor.
Compound DC Motors.
Permanent Magnet DC Motor.

What is mean by DC series?

Series DC motors are a group of self-excited DC motors in which the field coil is connected in series to the armature winding and thus a higher current passes through it. A series DC motor mission is to turn the electrical energy into mechanical one based on electromagnetic law.

What are the characteristics of DC series motor?

In a DC series motor, the field winding is connected in series with the armature and hence carries the full armature current. When the load on shaft of the motor is increased, the armature current also increases. Hence, the flux in a series motor increases with the increase in the armature current and vice-versa.

What is a series motor?

A series motor is a direct current motor that has two windings that are in series, with the same current flowing through each. Use of series motors is generally limited to cases where a heavy power demand is necessary to bring the machine up to speed, as in the case of certain elevator and hoist installations.

What are the applications of series motor?

Application of DC Series motor

Cranes.
Air compressor.
Lifts.
Elevators.
Winching system.
Electric traction.
Hair drier.
Vacuum cleaner and in speed regulation application.

How do you start a DC series motor?

When we have to start the dc connected motor, the lever turns gradually to the right. When the lever touches the point 1, the field winding gets directly connected across the supply.

Where is DC series motor used?

Series DC motors are generally used where high starting torque is required, and speed variations are possible. These types of direct connection motors are, for instance, used in the traction system, cranes, air compressors, vacuum cleaners, sewing machines, etc.

Which type of DC motor is best?

Series wound DC motors are best for applications that require high startup torque, without the need for speed regulation. Like a shunt motor, as a load is applied to a DC series motor, the motor speed decreases, which reduces the back EMF and increases the net voltage.

What is the difference between a DC shunt and a series motor?

In a DC shunt motor, torque is proportional to armature current (as shown in the torque equation below). In contrast, for a series-wound DC motor, torque increases as the square of armature current.

What is the speed of DC series motor?

The speed of the DC series motor is directly proportional to back EMF and inversely proportional to armature current. As Ia is zero and Ea is a constant value, so the speed of a DC series motor at no-load conditions will be infinite.

Why DC series motor is suitable for traction?

DC series motor has develops high torque at low speeds, low torque at high speed, this is the basic requirement of traction unit. Commutating property of series motor is good so we get sparkles commutation. Torque is unaffected by variation in supply voltage. DC Series motor maintenance cost is less.

Why a DC series motor has a high starting torque?

The armature current (Ia) flows through the field winding, the flux (ɸ) produced in the motor is very high. The torque (T) of the DC series motor is proportional to the square of the armature current. So, DC series motor has a high starting torque.

What is the efficiency of DC series motor?

The motors are normally designed to have maximum efficiency while working at or near full load. The efficiency of a dc motor at normal operating conditions may be as high as 95%.

What is constant in DC series motor?

In DC motors, the back EMF, denoted Ea, is proportional to the flux, times the shaft speed. The constant of proportionality is Ka, the armature constant. The torque developed by the armature is proportional to the product of the magnetic flux and the armature current.

Is DC series motor self starting?

DC motors are always self-starting in nature. In AC motors, the armature is stationary while the magnetic field rotates. In DC motors, the armature rotates while the magnetic field remains stationary.

What is the main disadvantage of a series motor?

Disadvantages of DC Series Motor: Speed regulation in the series motor is quite poor. With the increase in the load speed of the machine decreases, DC shunt motor maintains almost constant speed from no load to full load.

What is a DC series generator?

It is a machine that works on the principle of electromagnetic Induction and it converts the mechanical input given to electrical energy. The field winding is attached in series with the armature winding of this type of machine.