A Survey of Some Automotive Integrated-Starter-Generators and their Control
Assoc. Prof. Dorin Dumitru Lucache
Electrical Utilizations,
Electric Drives and Industrial Automation Department,
Faculty of Electrical Engineering,
“Gh.Asachi” Technical University of Iasi,
Bd. D.Mangeron nr. 53, 700050, Iasi,
Romania
E-mail: lukake@tuiasi.ro
Website: http://www.ee.tuiasi.ro/~euedia/dlucache.htm
Phone: +40.(0)740-256827
Abstract: Integrated starter generator (ISG) uses one machine to replace conventional starter and
alternator onboard vehicles and provides greater electrical generation capacity and improves the fuel
economy and emissions.
The main requirements of the ISG control are to ensure:
- the necessary cranking torque as starter in the most unfavorable conditions;
- a constant output voltage irrespective of the input speed (typically between 600 and 8000 rpm) and load,
as generator;
- a high efficiency as generator in the speed range of 600…4000 rpm that corresponds both to I4 and V8
engines;
- an acceptable cost.
The idea is not new, but needs a high complexity control system because of the differences between motoring
and generating regimes, so that only modern motors and high-developed power electronics and digital signal
processors made it practically possible.
This presentation reviews the challenges and opportunities brought by the integration of the internal
combustion engine and ISG into a single power unit. The structure evolution, material enhancement, and
major design challenges are discussed. The electric motors types that are suited to play the role of an
ISG are mostly the alternating current motors and their control algorithms are analyzed and exemplified.
Brief Biography of the Speaker:
Dorin-Dumitru Lucache received the M.S. and Ph.D. degrees from the "Gh.Asachi” Technical University of Iasi,
Romania, in 1986 and 2001, respectively, both in electric engineering. He received also the M.S. in
Mathematics and Bussines Administration from the "A.I.Cuza” University of Iasi, Romania, in 1994 and 2007,
respectively.
From 1986 to 1992, he worked as project engineer in the Land Works Execution and Exploitation Industry,
Iaşi, Romania and as research engineer in the Building-Resistance National Research Institute, Iaşi,
Romania. Beginning 1992 he becomes a member of the "Gh.Asachi” Technical University of Iasi, Romania,
currently acting as Assoc.Professor and Scientific Secretary of the Faculty of Electrical Engineering.
He is a Member of IEEE, of AGIR (General Association of Engineers of Romania) and of CETR (Technical
Experts Council of Romania). He was chairman of some sections in national and international conferences
and organizing committee chairman of three international conferences held in Iasi, Romania and Chisinau,
Rep. Moldavia.
Research fields of interest: permanent-magnet electric machines, magnetic bearings, electric lighting and
heating, mild-hybrid electric vehicles, motion control.
Author/ co-author of more than 80 scientific papers, published in scientific journals and/or presented at
international/national conferences and 2 books published in Romania. Coordinator/ member of the executive
team of over 12 research and education grants, at national level.
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