Stand alone adjustable speed power generating set

This paper is focused on the performance of a novel type of adjustable speed power generating set. The set consists of a diesel engine, an axial type permanent magnet generator and AC/AC converter. The engine is designed to operate over a wide speed range powering a high efficiency permanent magnet generator. The generator output is fed to a power electronics controller designed to maintain the voltage and frequency to the requirement of the load. The power to weight ratio of the set is considerably more than conventional set incorporating a wound field generator and RIC engine running at 1500/1800 rpm. The axial flux generator used is light, short and higher in efficiency than conventional type. The unique feature of the system is the control algorithm, which ensures fast system response and accurately map the engine torque curve to load demand. The paper will present the concept and main features of the recently developed variable speed-integrated generating set.