The 21st century debuts with intense interest in integrated starter/generator (ISG) systems in the 5-40 kW range. This large increase in available electric power will catalyze many new luxury, performance and convenience features and provide modest amounts of supplemental traction. The mechatronic technology of these systems will be nearly identical to more powerful series hybrid systems. This paper presents a Technologies M4 (TM4), Inc. advanced ISG system for internal combustion (IC) engines and hybrid electric vehicle applications to reduce fuel consumption, reduce emissions, and enhance energy efficiency. The new starter-generator combination provides a more efficient and higher output platform, giving the vehicle designer unique ways to re-engineer many functions under the hood. Virtually any accessory which is presently belt driven may be converted to an electrically powered counterpart, with the availability of more electrical power from the larger alternator component of the system. Hydraulic power steering units, belt driven air conditioning compressors, various fluid pumps and their components could be replaced with more efficient electric motor-driven systems powered by the ISG. Starting motor advantages of the new ISG system include a quiet start feature because the gears and whine of the traditional starter will be eliminated. This system will be able to increase the starting speed and it also supports the acceleration phase. The total system weight is nearly the same. The ISG system provides all the functions of engine starter motor and generator in one electric system installed at the engine without significantly increasing the weight and volume of the vehicle. The system has been demonstrated for passenger cars and it can also be used in commercial vehicles. The TM4's advanced ISG system is an innovative combination of a high power density rare earth permanent magnet motor/generator technology with a sophisticated integration of power electronics and controller technique. Finite element analysis (FEA) and control circuit models were developed ot optimize the permanent magnet machines and its controller circuits. The paper also discusses the future power generation and its usage trend in automotive industry.
Advanced integrated starter-generator technology for automotive applications
2001
8 Seiten, 7 Bilder, 1 Tabelle, 15 Quellen
Conference paper
English
Advanced Integrated Starter-Generator Technology for Automotive Applications
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