ALTERNATOR FOR TURBINE ENGINE POWER STATION

Abstract

At the present time many of the foreign companies spend a lot of efforts for development and production of electric and heat generating power stations based on gas turbine engines. Main feature of such stations is a high speed of turbine driving shaft that allows reducing the size and mass of electric generator. However, typical well-known generators when operating at high speed have large magnetic losses that reduce efficiency of power station. This reason makes a demand for a special high-speed alternator which can operate in turbine engine power station providing starter and generator modes. The article presents the research in choosing the permanent magnet synchronous generator comparing with other types of electric machines for using in power stations based on gas turbine engines. The flowchart of electrical power conversion in the power station is described. Based on presented analysis, a prototype of alternator with radial magnetic gap was built; characteristics of prototype like mechanical torque, output voltage and power, efficiency depending on load are shown.