How do you control speed and torque of a DC motor?

How do you control speed and torque of a DC motor?

Torque Control

1. Torque can be controlled directly by controlling the armature current. Fig.
2. In Fig. 10.8a, a phase-controlled rectifier, in combination with a dc-link filter inductor, can be used to create a variable dc-link current which can be applied directly to the armature terminals of the dc motor.
3. In Fig.

What are the two factors influencing the speed of induction motor?

Motor Speed The speed of an AC motor depends on the frequency of the input power and the number of poles for which the motor is wound.

How can you improve the design of a DC machine?

Increased Poles & Conductors Realistic designs for dc machines usually have more than 2 poles. Increasing the number of poles for a particular flux per pole will increase the induced voltage at a given speed and increase the torque available per amp.

What can improve a single loop dc motor?

The design of the DC motor shown in Tutorial 1 has some shortcomings. A motor with just one loop will not be very strong. To improve the strength of the magnetic field in the loop, you can increase the number of loops, increase the current, or include a soft-iron core.

What method is used to classify a DC motor?

field excitation method

What are the different parts of DC machine?

Parts of a DC Generator

• Stator. The main function of the stator is to provide magnetic fields where the coil spins.
• Rotor. A rotor in a DC machine includes slotted iron laminations with slots that are stacked to shape a cylindrical armature core.
• Armature Windings.
• Yoke.
• Poles.
• Pole Shoe.
• Commutator.
• Brushes.

What are the 3 components of a DC generator?

A DC Generator is an electrical device which converts mechanical energy into electrical energy. It mainly consists of three main parts, i.e. magnetic field system, armature and commutator and brush gear.

What are the main part of a DC machine?

Basic Components of a DC Machine There are two main parts, the stator and the rotor. The stator contains parts such as brushes, magnets and housing for the whole motor. The rotor contains the windings, the communicator and the output shaft. The two parts work together when voltage is applied to create a moving motor.

What is the function of DC motor?

A DC motor is any of a class of rotary electrical motors that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields.