Jegsy — synchronous generators and motors with salient-pole rotor, 4 and 6–14 poles

Description

Jegsy is a salient-pole synchronous machine technology combining many years of company experience in this field. Jegsy machines are produced in a four-pole version and in a version with 6–14 poles, and are used as generators for drive from turbines and diesel engines, and also as part of a range of synchronous machines for drives. The key feature is the rotor design: a patented insulation and cooling system for the pole coils which, according to the manufacturer, makes it possible to exclude the risk of electrical damage to the rotor. All stator windings are impregnated globally under vacuum and pressure, and the rotors are equipped with a brushless excitation system with a rotating rectifier. If necessary, impregnation by sections or by bars and excitation through slip rings are possible. Salient-pole machines running at a lower rotational speed than two- and four-pole turbogenerators are used in diesel generator stations, including island stations, in ship power installations, at industrial combined heat and power plants and in drives. Cooling is by air or water coolers, or by open-air cooling. The supply may include digital excitation regulators and protection systems. The specific power and voltage ranges of Jegsy machines are not given on the website and are determined by the project. Production base: specialised plants in France (Champagne-sur-Seine, Carquefou, Étupes) and a plant in India (Vadodara); at the main site there are a 5.4 m diameter impregnation tank, 55 overhead cranes, four test platforms and four balancing stands.

Technical specifications