Wärtsilä Shaft Generator - economical electrical power generation

Wärtsilä’s shaft generator systems are designed with PWM frequency converters using modern IGBT technology. An additional synchronous compensator is no longer needed to generate the reactive power or the short circuit current, and is not required for the voltage control or for the filter circuits in order to lower the harmonics to admissible levels. This configuration has the following features and benefits: PWM frequency converter system with more economic power generation thanks to improved efficiency High mains quality with excellent harmonic distortion con­tent due to high IGBT pulse frequency Just 2 components – shaft generator and the frequen­cy converter panel – to be installed resulting in reduced volume and weight as well as lower costs for foundation, cables and cable work Water cooling of the power electronics with connection to the ship’s fresh water cooling system Geared shaft generator as standard brushless synchro­nous generator No step-up transformer for 400 V, 450 V, 690 V and 6,6 kV solutions