Improvement and simulation study on turbocharged diesel generator set under pulsed load

摘要

In order to ensure the electricity output quality of one turbocharged diesel generator set under pulsed load, some measures were taken to control the speed regulating rate of original power machine. One main reason causing the big diesel speed regulating rate in experiment is the lack of air for combustion in the early period of pulse. The other reason is that the energy stored by set shafting parts when first pulse is loaded is less than other pulses, and the speed regulating rate in first pulse is comparatively big. Aiming at the two problems, strategies of electrical assisting turbo charging and increasing diesel speed before first pulse were put forward. The set dynamic performances before and after improvement were simulated on the basis of GT-power and Matlab. Simulation result shows that the set speed regulating rate decreases from 6.8% to 2.8% after improvement.