Simond, J.-J.Sapin, A.Tu Xuan, M.Wetter, R.Burmeister, P.2008-11-282008-11-28200510.1109/IAS.2005.1518781https://infoscience.epfl.ch/handle/20.500.14299/31981The current source thyristor inverter is still today a suitable choice for supplying high power adjustable speed drives for pumps or compressors. This paper presents a 12-pulse LCI (load commutated inverter) synchronous drive for a 20 MW compressor, it focuses on the following main aspects: modeling of the complete drive system, numerical simulation and comparison between calculated and measured values of the pulsating torque components in steady-state operations. The modeling of the six-phase synchronous motor is obtained by using a new virtual test-platform for large electrical machines. The pulsating torque components are measured in real time with a digital transient torque measurement device.12-PulseLCISynchronousSimulationMeasurementstext::conference output::conference paper not in proceedings