If the speed is to remain constant then the back-emf must also remain constant. Then the only way to increase torque is to increase the armature current and the only way to increase the armature current is to increase the supply voltage. This in effect is how a speed controller works.
How do you increase the torque of a motor?
The way to increase the torque that the motor delivers, mechanically, would be:
- To increase the diameter of the wire in the windings (which is to say, completely remanufacture the motor)
- to have the output shaft coupled to a gear reduction setup, which would lower the final drive rpms, but increase the torque.
What are the factors affecting torque in DC motor?
Output torque of a DC motor is proportional to the product of the main pole flux, armature current, and a machine constant that is a function of armature windings. Therefore, with armature voltage speed control and constant shunt field excitation, the torque is dependent upon the armature current only.
Can you increase torque without increasing horsepower?
To answer your question, yes, torque can be increased in a car without changing the horsepower through gearing. Torque = A measurable a twisting force. It’s measured in an instance with no regard to time. Horsepower = (RPM x Torque) / 5252.
Is torque proportional to current?
Electrical motor torque is proportional to the product of magnetic flux and the armature current. … Motor current varies in relation to the amount of load torque applied. When a motor is running in steady state, the armature current is constant, and the electrical torque is equal and opposite of the mechanical torque.