王钊轶，蒋炎坤，王珺，陈龙灿，王志行

(华中科技大学 能源与动力工程学院，湖北 武汉 430074)

摘要：以一台V16涡轮增压柴电机组为仿真对象，在Matlab/Simulink平台建立了柴电机组的压气机、中冷器、柴油机本体、调速器和排气涡轮的平均值数学模型。分析表明在空载(小负荷)启动工况，由于排气能量较低，涡轮转速明显滞后于曲轴转速。在负荷突增与突减两种不同工况下，涡轮转速将在某一转速附近来回振荡且振荡的趋势完全相反，之后逐步趋于稳定。而进气质量流量变化主要与曲轴转速有关，其次取决于涡轮转速。柴电机组平均值模型可以迅速反映过渡工况下柴电机组各项性能参数的变化，收敛速度快，且仿真精度高。

关键词：柴电机组；涡轮增压；平均值模型；Simulink

Abstract：On the  simulation object of a V16 turbocharged diesel generator set，the paper builds Mean Value Mathematical Modeling for the compressor , intercooler, diesel engine, speed governor and exhaust turbine. The analysis shows that the turbine speed under starting condition with no-load (small load) will obviously delay to the crankshaft speed due to the low exhaust energy. Under the two working conditions, when load increases or decreases suddenly, the turbine speed oscillates along an opposite trend and then gradually goes to stabilization. The flow rate of intake mass is typically related to the crankshaft speed as well as the turbine speed. The Mean Value Model can rapidly reflect varieties of performance parameters while the diesel engine is under transient condition, presenting advantages of fast convergence speed and high accuracy.

Key words：Diesel Generator Set；Turbocharging； Mean Value Model； Simulink