Table of Contents
How do you know if a machine is a motor or generator?
Both the motor and generator comes under the machine category. The major difference between Motor and Generator is that a motor converts electrical energy into mechanical energy, whereas the generator does the exact opposite. The motor uses electricity whereas the generator produces electricity.
How a motor acts as a generator?
Every motor acts as a generator when rotating. Because you have conductors (coils) linking with magnetic lines you generate a reverse voltage that opposes the applied voltage. Normally this opposing voltage is always lower than the applied voltage.
What is a motor or generator?
motor generator, also called Motor-generator Set, an electric motor coupled to an electric generator to convert electric power from one from to another. Motor generator is also used to denote an electric generator and a driving motor, such as a gasoline or diesel engine.
How are generators and motors the same?
A generator converts mechanical energy into electrical energy, while a motor does the opposite – it converts electrical energy into mechanical energy. Both devices work because of electromagnetic induction, which is when a voltage is induced by a changing magnetic field.
What is the difference between a generator and a motor?
Both generator and motor are known with a general term electric machine. Both of them are same and are capable of being used as a motor or a generator. For changing a motor to generator or vice versa we mainly have to think about the stator and rotor windings and how to give them proper excitation.
What is the working principle of a generator?
To operate the machine as a generator, the rotor is driven by a prime mover. As the rotating field sweeps by the armature conductors, voltages are induced in the armature windings. Because the phases are physically 120° apart, the voltages that are induced in the three phases are out of phase by 120° in time.
How does a synchronous motor work?
FIGURE 1 Synchronous machine operating as a motor. One feature of the synchronous machine is that it has two electrical sources, one for the rotor and one for the stator. Intuitively, it makes sense that as more power is required by the mechanical load on the motor, one or both of the magnetic fields must get stronger.
How do magnetic fields affect the power factor of a motor?
Intuitively, it makes sense that as more power is required by the mechanical load on the motor, one or both of the magnetic fields must get stronger. Essentially, either winding can provide exciting current for the machine, which means the power factor of the motor can be varied by controlling the field current.