Simond, J.-J.Sapin, A.Xuan, M. TuWetter, R.Burmeister, M.2009-01-212009-01-212009-01-21200310.1109/IAS.2005.1518781https://infoscience.epfl.ch/handle/20.500.14299/34171The 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.modelingsimulationtestadjustable speed drivetext::conference output::conference proceedings::conference paper