Synchronous generator, that is, an alternator with the same rotor speed as the rotating magnetic field of the stator. According to the structure, it can be divided into two types: a rotating armature and a rotating magnetic field.
Synchronous generators are one of the most commonly used alternators. In the modern power industry, it is widely used in hydropower, thermal power, nuclear power generation and diesel power generation.A synchronous motor that operates as a generator is one of the most commonly used alternators. In the modern power industry, it is widely used in hydropower, thermal power, nuclear power generation and diesel engine.
Electricity. Since the synchronous generator generally adopts DC excitation, when the single machine operates independently, the voltage of the generator can be conveniently adjusted by adjusting the excitation current. If it is integrated into the grid operation, the voltage is determined by the grid and cannot be changed. At this time, the result of adjusting the excitation current is to adjust the power factor and reactive power of the motor.
Induction generator is a motor that uses electromagnetic induction between the rotors to induce current in the rotor to achieve electromechanical energy conversion. Induction generator has the advantages of simple structure, firmness, small size, light weight, less auxiliary equipment, convenient operation and maintenance, etc. Especially the independent operation of induction generator makes it very practical for remote mountainous areas or power shortages that cannot be covered by power grid. Towns and villages or as an emergency backup power source.
Also known as "asynchronous generator". An alternator that utilizes an air gap rotating magnetic field between a stator and a rotor to interact with an induced current in a rotor winding.
Induction generator - working principle characteristics
The steering of the rotor is the same as the steering of the rotating magnetic field, but the rotational speed is slightly higher than the synchronous rotational speed of the rotating magnetic field. Often used as a low power hydroelectric generator.