Naslov
Analysis of the dynamic response improvement of a turbocharged diesel engine driven alternating current generating set

Autori
Katrašnik, Tomaž ; Medica, Vladimir ; Trenc, Ferdinand

Izvornik
Energy conversion and management (0196-8904) 46 (2005), 18-19, November; 2838-2855

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Diesel engine; Alternating current generating set; Turbocharging; Transient operation; Electric assisting systems; Numerical simulation

Sažetak
Reliability of electric supply systems is among the most required necessities of modern society. Turbocharged diesel engine driven alternating current generating sets are often used to prevent electric black outs and/or as prime electric energy suppliers. It is well known that turbocharged diesel engines suffer from an inadequate response to a sudden load increase, this being a consequence of the nature of the energy exchange between the engine and the turbocharger. The dynamic response of turbocharged diesel engines could be improved by electric assisting systems, either by direct energy supply with an integrated starter– generator– booster (ISG) mounted on the engine flywheel, or by an indirect energy supply with an electrically assisted turbocharger. An experimentally verified zero dimensional computer simulation method was used for the analysis of both types of electrical assistance. The paper offers an analysis of the interaction between a turbocharged diesel engine and different electric assisting systems, as well as the requirements for the supporting electric motors that could improve the dynamic response of a diesel engine while driving an AC generating set. When performance class compliance is a concern, it is evident that an integrated starter– generator– booster outperforms an electrically assisted turbocharger for the investigated generating set. However, the electric energy consumption and frequency recovery times are smaller when an electrically assisted turbocharger is applied.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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