Asynchronous motor – generator

Asynchronous motor – generator
The invention of the Russian engineer Dolivo–Dobrovolsky, who lives in the 19th century — three-phase asynchronous motor, today, enjoys great popularity and is actively used in agriculture and industry, and everyday life.
There are two main types: asynchronous motor with slip-ring rotor or closed.
Squirrel-cage motor are assembled from fixed and movable parts of stator and rotor. The slots of the stator core contain an isolated winding. In the slots of the rotor core is a core coil, or just pour the liquid aluminum. At the ends of the rotor winding is short-circuited rings.
The grooves of the phase of the rotor, in contrast to closed loop, contain a winding, similar to the stator winding. The ends of the liner are connected to rings on the shaft. The brushes sliding on ring, connect the coil with the adjustment or rheostat starter. Induction motors with this type of rotor are more expensive and require good maintenance. In operation they are not very reliable, so would apply only in those areas where without them it is impossible to do. Therefore, asynchronous motors with slip-ring rotor is not very popular and rarely used.
Most often in industrial applications use three-phase asynchronous motors. Series 4A relates to electric motors of this type and is available with a power range up to 400 kW. It is a reliable motor and meet the international standard levels. Such motors can be bought at any specialized organization. PR this link You will be able to buy any motors.
Asynchronous motors can be used as three-phase generators to convert the mechanical energy of the engine into electricity. Unlike other types of generators, asynchronous is no collector-brush mechanism. In fact, this is the big advantage of Assembly, as it guarantees greater durability and reliability.
If the asynchronous motor to be disconnected from the power source and connected to another motor, at the terminals of the stator of our motor is formed of EDS. Connecting to the stator terminals of the battery condenser, it is possible to obtain the magnetizing current. The battery capacity must be higher than the critical point C0, which depends on the configuration of the Autonomous asynchronous generator. As a result, the generator is self-excited on the stator to obtain a three-phase voltage.