What are Motor-Generators?
A motor-generator set is an electric motor coupled to an alternator or generator for the purpose of power conversion. Motor-generators are also known as motor-alternator sets, rotary converters and frequency converters. The motor can be directly coupled to the alternator and is then described as a direct-coupled motor-generator. Many frequency converters are belt driven and can be gearbox-coupled, too.
Motor-generators, when used as frequency converters, can be used to change the frequency of an alternating current supply, from 50 Hz to 60 Hz or vice-versa and also from 50 Hz or 60 Hz to 400 Hz. They can also convert single phase supplies to 3 phase and change the voltage of the supply.
Motor-generators are also used for isolating a load from the supply to provide clean power and can provide short-term run-through of power loss or dips in voltage and frequency. This is useful for sensitive loads such as power electronics.
A motor-generator set can be used for emulating a larger power generator, such as used with a gas or steam turbine in a power station and is useful for training or test and development purposes. Jemelec Generator Training Sets are a good example of this type of application.
What are they used for?
- Frequency Conversion
- Electrical Isolation
- Clean Power for example eliminate spikes and variations in large power supplies. Can be used in such applications as Data Centers.
- Phase Conversion -To provide phase matching between different electrical system.
Large motor–generators were widely used to convert industrial amounts of power while smaller motor–generators were used to convert battery power to higher DC voltages.
Jemelec Ltd can design and build a system to your specification or you can Lease a unit, call us for details, or go to www.frequencyconverterhire.co.uk