What is the formula of armature torque of DC motor?

The sum of the torques due to all armature conductors is known as gross or armature torque (Ta). Now i = Ia/A, B = φ/a where a is the x-sectional area of flux path per pole at radius r. Clearly, a = 2πrl/P. Hence torque in a d.c. motor is directly proportional to flux per pole and armature current.

What is armature torque in DC motor?

The sum of the torques due to all the armature conductors is known as armature torque (τa). The expression in the equation (2) is known as the armature torque of DC motor. Therefore, the armature torque developed in a DC motor is directly proportional to the flux per pole and the armature current.

What is torque and what is the source of torque in DC motor?

Hence torque is produced at the circumference of the rotor and rotor starts rotating. The term torque as best explained by Dr. Huge d Young is the quantitative measure of the tendency of a force to cause a rotational motion, or to bring about a change in rotational motion.

How do you calculate armature torque?

1. Tg = armature or gross torque (N-m) = Force × radius.
2. r = radius of the armature in m.
3. N = speed of the armature in rpm = N/60 rps.

What is torque in DC generator?

When armature conductors of a DC motor carry current in the presence of stator field flux, a mechanical torque is developed between the armature and the stator. Torque is given by the product of the force and the radius at which this force acts.

How do we calculate motor torque?

1. Torque (lb.in) = 63,025 x Power (HP) / Speed (RPM)
2. Power (HP) = Torque (lb.in) x Speed (RPM) / 63,025.
3. Torque (N.m) = 9.5488 x Power (kW) / Speed (RPM)
4. Power (kW) = Torque (N.m) x Speed (RPM) / 9.5488.

What is DC torque?

The MD-Series DC torque control system is a high-performance fastening system that allows manufacturers to optimize the assembly area, reduce labor costs, enhance quality and increase productivity. The durable torque and automation control system is engineered for precise, accurate and repeatable torque control.

How is torque related to armature current?

armature current (Ta-Ia) This characteristic is also known as electrical characteristic. We know that torque is directly proportional to the product of armature current and field flux, Ta ∝ ɸ.

How do you calculate total torque?

Mathematically, torque can be written as T = F * r * sin(theta), and it has units of Newton-meters. When the sum of all torques acting on an object equals zero, it is in rotational equilibrium.

What is the tortorque of DC motor?

Torque in DC Motor depends upon the constructional as well as operational parameters. Constructional parameters include number of poles P, number of conductors Z and number of parallel paths ‘a’ in armature. Operational parameters include armature current Ia and field excitation. Te = KaØIa ……. (1)

What is the torque produced in the armature of a motor?

Where n is the speed in (rps). For a particular DC Motor, the number of poles (P) and the number of conductors per parallel path (Z/A) are constant. Thus, from the above equation (5) it is clear that the torque produced in the armature is directly proportional to the flux per pole and the armature current.

How is torque produced in a DC motor directly proportional to flux?

For a particular DC Motor, the number of poles (P) and the number of conductors per parallel path (Z/A) are constant. Thus, from the above equation (5) it is clear that the torque produced in the armature is directly proportional to the flux per pole and the armature current.

What is the formula for KA in DC motor?

Ka = (PZ/2πa). Since Ka depends upon the constructional design of DC Motor or generator, it is known as armature constant. Here P is number of poles, Z is total number of armature conductor and ‘a’ is the number of parallel paths in armature. Equation (1) is the torque equation for DC machine.