Review on Technology of Seawater Variable Speed Pumped Storage Generator Unit

The working principle and technical characteristics of variable speed pumped-storage generator are very different from that of conventional fixed speed pumped-storage generator. Its core technologies include variable speed mode, variable speed adjustment range, ac excitation system components and topological structure, rotor end fixed form, rotor winding wire rod and so on. Based on the Dawanshan island variable speed pumped storage generator as an example, the key technology of variable speed generator has carried on the comparison and analysis, and combined with its own requirements such as technology, economy, and development of variable speed generator, the key technical parameters and technical route were chosen, this paper provides reference for the design of the same type of variable speed generator.