When a DC machine is loaded either as a motor or as a generator, the rotor conductors carry current. These conductors lie in the magnetic field of the air gap. Thus each conductor experiences a force. … Hence torque is produced at the circumference of the rotor and rotor starts rotating.
How does a motor produce torque?
Torque and power are what engines produce when you turn the key and press the accelerator. Air and fuel ignited in the combustion chambers cause the crankshaft, transmission, and drive axles to do the twist. … Torque is a rotating force produced by an engine’s crankshaft.
How do you increase the torque of a DC motor?
To increase the torque … that a bit harder. All you can do, electrically (as you can do it mechanically via gears), is to reduce the source impedance to maximise the current that can be delivered for a given stator impedance. Rewind it with more turns of thinner wire.
How much torque does a 1 hp motor have?
The 3600 RPM, 1HP motor produces 1.5 ft. lbs. of torque at 3600 RPM. So if your 1HP pump was operating at 1800 RPM, the 1800 RPM motor would be producing 3 ft.
Why do electric motors produce more torque?
The benefit of using an electric motor to power a car is that it can help drivers reach maximum torque from 0 RPM. This is because electric motors use an electric current, which moves through a magnetic field and creates the force necessary to rotate the armature and get the car moving.
How do you increase the torque of a 12v DC motor?
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.
How do you control the torque of a DC motor?
- Torque can be controlled directly by controlling the armature current. Fig. …
- 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.
- In Fig.
What causes a DC motor to lose torque?
When a Series DC motor is overloaded it will lose torque as the rotation of the rotor is resisted, allowing Counter EMF to overcome applied voltage and decrease torque. Unless I have it backwards, In a shunt DC motor, when current to the shunt field increases, additional EMF is created reducing torque AND speed.
How many HP is RPM?
One horsepower is equal to 33,000 foot-pounds of work per minute. Add in the equations relating to torque and velocity, and you’ll find that horsepower always equals torque multiplied by rpm, divided by 5,252. Canceling out the equal variables, you wind up with horsepower equaling torque… at 5,252 rpm.
How do you increase torque?
How You Can Increase Horsepower and Torque?
- Clean House to Increase Horsepower. …
- Perform a Tune-Up on the Engine. …
- Install a Turbo Kit or Supercharger. …
- Install a Cold-Air Intake. …
- Install an Aftermarket Exhaust System. …
- Buy an Engine Tuner. …
Does 2 motors double torque?
(2) motors provide (2x) the torque, at the same speed. Additional motors will provide additional torque. There is no more complicated calculation. It’s that simple.
Do electric motors produce more torque?
That’s possible because at lower speeds, electric motors deliver more torque than gas engines. “Torque is what you need to get a car going,” says Grace, and with more of it, electrics out-accelerate comparable gas engines.
What is the most powerful electric motor?
In other EV news, British company Equipmake has developed what it claims is the “world’s most power-dense permanent magnet electric motor.” The company’s Ampere motor weighs just 22 pounds but develops close to 300 hp.
Do electric vehicles have more torque?
Yes certainly, battery-electric vehicles have better torque performance than internal combustion engines, hence the ‘torque of the town’! If in doubt, look at a traffic light that has both these types of cars. As the signal changes to green, the electric car will quickly leave behind the diesel and petrol cars.