Title :
The influence of failures of a multiphase p.m. synchronous generator and a static voltage converter system on the generator electromagnetic torque
Author :
Danilevicz, Y.B. ; Drozdowski, P. ; Mazgaj, W. ; Sobczyk, T.J. ; Szular, Z.
Abstract :
The electrical energy produced by a p.m. synchronous generator can be converted to the desired value by an appropriate power electronic voltage converter. The influence of the converter on the power system composed of the 9-phase p.m. synchronous generator and the driving gas turbine is the subject of this paper. The high speed generator is loaded directly with a multiphase rectifier supplying the output inverter. The main analysed problem is connected with fault cases of the converter which may cause a significant increase in alternating component of the electromagnetic torque. This torque loads the gas turbine. The short circuit and breaking in the generator output are the main analysed failures. This paper additionally elaborates on the increase in the gas turbine velocity and the short circuit in the converter output or short circuit on any diode of the converter.
Keywords :
fault currents; gas turbines; permanent magnet generators; rectifiers; synchronous generators; alternating component; driving gas turbine; electrical energy; fault current; gas turbine velocity; generator electromagnetic torque; high speed generator; multiphase permanent magnet synchronous generator; multiphase rectifier; power electronic voltage converter; static voltage converter system; Circuits; Inverters; Power electronics; Power system analysis computing; Power system faults; Rectifiers; Synchronous generators; Torque converters; Turbines; Voltage; Converters; fault currents; gas turbines; permanent magnet generators; power electronics; synchronous generator;
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
DOI :
10.1109/PTC.2005.4524643
