Title :
Cycloconverter for high speed permanent magnet generator units
Author :
Polinder, H. ; Hofmeester, N.H.M. ; Offringa, L.J.J. ; Deleroi, W.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
A generator-converter unit, consisting of a high speed permanent magnet generator and a high frequency cycloconverter, is developed. The generator-converter unit is intended for use in total energy systems connected to the utility grid, or hybrid systems in vehicles, or vessels. It will be driven by a high speed high efficiency gas turbine. The advantages of this variable speed constant frequency (VSCF) system, such as optimal turbine speed and small size and weight, are discussed. The 6-pulse cycloconverter, used to change the 800 Hz generator frequency to 50 Hz, is described in detail. A new combination of control methods results in a substantial improvement of the power factor load of the generator. Individual pulse control of the cycloconverter by means of digital signal processing results in excellent control properties of the generator-converter unit. Measurements are given on a 50 kW experimental system, consisting of a 600 Hz test generator and a single phase cycloconverter
Keywords :
electric generators; gas turbines; permanent magnet machines; power factor; 50 Hz; 50 kW; 800 Hz; digital signal processing; generator-converter unit; high frequency cycloconverter; high speed high efficiency gas turbine; high speed permanent magnet generator units; power factor load; total energy systems; utility grid; variable speed constant frequency;
Conference_Titel :
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location :
Brighton
