Table of Contents
Does current or voltage affect motor speed?
The speed of a motor is determined by the voltage and the torque by the current. If a motor is running at a certain speed with a constant torque and the load increases, the current will increase and so also the torque to maintain the same speed.
What is the relationship between motor speed and voltage?
The speed of a motor is directly proportional to the applied voltage up to the rated voltage.
How does voltage affect speed?
Back to the original question: how does voltage affect speed? From the analysis above, we can see that when the load (torque) on the motor is constant, speed is directly proportional to supply voltage. And, when the voltage remains constant, an increase in the load (torque) on the motor results in a decrease in speed.
What is the relation between torque and voltage?
Therefore, when supply voltage (V) is constant, torque (T) is inversely proportional to speed (ω). To see the derivation of the DC motor torque equation, check out this article. The inverse relationship means that the torque-speed curve is a descending line, with a negative slope.
What is the relation between voltage and torque of a motor?
Voltage is proportional to speed, and torque is proportional to the current. The maximum current it could take is rated current and the corresponding torque can be found out from speed torque curve (as you know the speed from voltage (rpm=k*v)) where k is the speed constant of the motor).
What is the torque of a permanent magnet brushed DC motor?
The torque from a permanent magnet brushed DC motor is limited by its stator field, which gives it good low end ( low speed ) torque and a limited high end ( high speed ) torque. The permanent magnet brushed DC motor responds very quickly to changes in voltage.
Does a 100 volt motor have more torque than a motor?
Since the 100 volt motor can take more volts, if all else is equal, it can give you a higher maximum speed. But the difference in voltage does not affect the torque. To get more torque to go up a hill, you need to supply your motor with more current.
Does more current equal to more torque?
More current is not equal to more torque. As a matter of fact, the burning smell is caused by too many current because you supplied your 18v motor with 12v voltage input, and the motor was not turning fast enough, so the extra current heated up your motor and produced that burning smell because it was burning.