What is the working principle of DC series motor?
What is the working principle of DC series motor?
What is DC 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”.
What is a series DC motor?
A series DC motor connects the armature and field windings in series with a common D.C. power source. The motor speed varies as a non-linear function of load torque and armature current; current is common to both the stator and rotor yielding current squared (I^2) behavior.
What is the series motor and connection?
A series wound DC motor like in the case of shunt wound DC motor or compound wound DC motor falls under the category of self-excited DC motors, and it gets its name from the fact that the field winding in this case is connected internally in series to the armature winding.
What is the structure of DC motor?
DC motor basically consists of two main parts. The rotating part is called the rotor and the stationary part is also called the stator. The rotor rotates with respect to the stator. The rotor consists of windings, the windings being electrically associated with the commutator.
What are the principle characteristics of a series DC motor What are its uses?
DC series motors are always connected to loads by gears so that minimum load is always maintained to keep the speed with in safe limits. Since a series motor develops high starting torques at low speeds and low torque at high speeds, therefore, speed – torque characteristics of a DC series motor is a hyperbola.
What is the chief advantage of a DC series motor?
The primary advantage of the DC motor is that it can develop constant torque over a wide speed application. Power supply is an important consideration in the application of DC motors. The most common way to provide DC voltage to a motor from an AC line is through the use of an electronic drive.
What are the advantages of DC series motor?
Advantages of DC Series Motor Dc series motor have good accelerating torque. Dc series motor have a relatively huge starting torques. Dc series motor delivers high torque during an overload. The dc series motor draws less current and power from the source compared to a shunt or compound motor.
How does DC motor differ from DC generator in construction?
As per my knowledge their is no any difference in construction of DC motor & DC generator,Bcoz we can use DC motro as Generator and vice versa. Their is a difference in just what you given as input. If u give electrical input than it works as motor on the other way if give mechanical input its work as generator.
Which type of starter is used for DC series motor?
3 point starters and 4 point starters are used for starting dc shunt-wound motors and dc compound wound motors. 2 point starter is used for starting dc series motors.
Why is a DC series motor used to start heavy loads?
The starting torque of the DC series motor is proportional to the square of the armature current. That is why DC series motor is capable to produce high starting torque, and it is preferred for driving heavy loads.
What is the construction and principle of DC series motor?
Construction and Principle of Operation of DC Series Motor. The key components of a DC series motor are the armature (rotor), stator, commutator, field windings, axle, and brushes. motor, the stator is made up of two or more electromagnet pole pieces, and the rotor is comprised of the armature, with windings on the core connected to the commutator.
What is the difference between an armature and a DC motor?
The armature is a rotating part that rotates on its axis and is separated from the field coil by an air gap. A DC motor field coil is a non-moving part on which winding is wound to produce a magnetic field. This electro-magnet has a cylindrical cavity between its poles.
Can a DC series motor run on single phase AC supply?
Yes, the DC series motor runs on single-phase AC supply. This is because the torque, which varies as the product of the armature and field current, is always positive. Thus, a positive average torque causes the motor to rotate.
What are the types of self-excited DC motor?
Based on this, the self-excited DC motor can further be classified as: In a shunt wound motor, the field winding is connected parallel to the armature as shown in the figure. In a series wound DC motor, the field winding is connected in series with the armature winding as shown in the figure.