Four-pole generators with non-salient-pole rotor for high-power applications

Description

Four-pole generators with a non-salient-pole (cylindrical) rotor are intended for high-power applications where a rotational speed of 1500 or 1800 rpm is required: for drive from steam and gas turbines through a gearbox or directly, and also from diesel engines. According to the manufacturer, hundreds of such machines are in operation, and the technologies used are reliable and proven. All stator windings are impregnated globally under vacuum and pressure, and the rotors are equipped with a brushless excitation system. For large dimensions or at the customer request, impregnation by sections or by bars (VPI or Resin rich) and excitation through slip rings are possible. As with other synchronous machines, the generators can have air or water coolers or be cooled by ambient air. According to the manufacturer, the generators are reliable, robust and flexibly adapted to coupling with any turbines available on the market. Digital excitation regulators GLOBALTA NG or HYDRALTA NG and protection systems can be supplied as a set. The specific power range of four-pole machines is not stated on the website. 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