Jin-Woo Ahn was born in Busan, Korea, in 1958. He received his B.S., M.S., and Ph.D. degrees in Electrical Engineering from Pusan National University, Busan, Korea, in 1984, 1986 and 1992, respectively.
He has been with Kyungsung University, Busan, Korea, as a professor in the Department of Electrical and Mechatronics Engineering since 1992. He was a visiting researcher in the SPEED Lab at Glasgow University, U.K., a visiting professor atWEMPEC at the University of Wisconsin-Madison, USA from July 1998 to July 1999 and at Virginia Tech from July 2006 to June 2007. Prof. Ahn is an adjunct professor of Shenyang University of Technology, China.
He was the director of the Advanced Electric Machinery and Power Electronics Center. The function was to develop advanced motors and drive systems for industrial applications, and to support graduate students in the universities inBusan. He has also been the director of the Smart Mechatronics Advanced Research and Technology(SMART) Institute since 2008 which is authorized and supported by the Ministry of Industry, Commerce and Energy, Korea.
He is the author of five books including switched reluctance motor(SRM), the author of more than 250 papers and has more than 30 national and U.S patents. His current research interests are advanced motor drive systems and electric vehicle drives. He is among the most renowned researchers in SRM. Furthermore, he has received many prizes and awards, among them, the Park Min-Ho Special Prize from the Korean Institute of Electrical Engineers, a prestigious prize in the field of electrical engineers. Prof. Ahn received the Outstanding Paper Award in ICEMS2012, Japan, one of only 3 papers presented at that conference. He is the recipient of the 2011 Busan Science and Technology Award from the Federation of Busan Science and Technology. He also received a Ministerial Citation from the Ministry of Knowledge Economy, Korea, Dec. 2011 for his contributions to electrical engineering and industry, and a Ministerial Citation from the Ministry of Health and Welfare, Korea, June 2013 for his contributions to the development of products for senior citizens. He executed many research projects for the Government as well as private companies.
Prof. Ahn has been a member of the Board and Committee, Korean Institute of Electrical Engineers (KIEE). This year, he is President of Electric Machinery and Energy Conversion Systems Society and Vice President of KIEE. He served as a conference chairman of the International Conference on Electric Machines and Systems (ICEMS) 2013,the International Conference on Industrial Technology (IEEE/ICIT) 2014, and the Transportation Electrification Conference 2016 (ITEC-Asia-Pacific). He was editor-in-chief of the Journal of International Conference on Electric Machines and Systems (JICEMS) from 2010 to 2014.
He is a fellow member of the Korean Institute of Electrical Engineers, a member of the Korean Institute of Power Electronics and a senior member of the IEEE.
Contact Information:
Dept. of Mechatronics Engineering, Kyungsung University, Busan, KOREA
E-mail:
Tel: +82 51 6634773 (O), +82 10 5543 4773(H), Fax: + 82 51 626 4773
Lecture Topics
1.Design and drive of switched reluctance motors
Switched Reluctance Motors (SRM) have inherent advantages such as simple structure with non winding construction on the rotor, fail safe and robustness, low cost with no permanent magnets, and possible operation at high temperatures or in intense temperature variations. This lecture covers the design and drive technologies of switched reluctance motors as well as operational principles and characteristics. The attainment of good designs and satisfactory performance is practically impossible by traditional design methods. This presentation for industrial designers and academics alike presents a detailed account of the properties and capabilities of the switched reluctance motor.
The analysis and design of SRMs from principles includes an introduction of a wide variety of power converters available for driving SRMs. The presentation introduces the techniques for controlling switched reluctance motors, starting from first principles and building up to the most advanced forms of sensor or sensorless control. It covers recent advances in electronic control and includes aspects of motion control, automation, acoustic noise reduction and energy efficiency. The talk also contains applications and case studies.
2. Application of switched reluctance drives
The industrial area is the main place where the need for electric motor is high. Industry needs not only a machine that can rotate but a motor with the ability to work and operate under any condition with little maintenance. SRMs, due their robustness and simple structure, is the answer to these problems. An SRM requires less maintenance compared with other type of motors. So the use of SRM in industry can reduced the machine maintenance cost.
There are many applications in industrial areas where SRMs can be used, such as: compressors, fans, pumps, centrifuges, washing machines as well as automotive. These kinds of industries need motors to run at higher speeds and higher starting torques. SRMs with their unique configuration can run and operate in those conditions. Accordingly, SRMs are being used more and more often, including for electric vehicles. This lecture gives some successful application examples in industry and transportation as well as home appliances.
3.Research trends of switched reluctance drives
There are some advantages of a SRM compared with the other motor types. The SRM has a low rotor inertia and high torque/inertia ratio; the winding losses only appear in the stator because there is no winding on the rotor side; SRM has a rigid structure and absence of permanent magnets and rotor windings; SRMs can be used in extremely high speed applications and the maximum permissible rotor temperature is high, since there are no permanent magnets and rotor windings. However, SRMconstruction with no magnets or windings on the rotor also bring some disadvantages. Since there is only a single excitation source and because of magnetic saturation, the power density of reluctance motor is lower than PM motor.
This lecture covers various aspects of the principle and applications of switched reluctance motors. The motor was proposed relatively recently compared to other motors and its control and drive are not simple. It also needs extra information for excitation and commutation. Many ideas and technologies to the control of the motor are shown. This is a practical guide for engineers to help them understand, design and apply the motor. The SRM is a relative newcomer to the family of electric motors and is unusual both for having salient teeth on rotor and stator and for its complete dependence on its power electronic controls. The lecture gives some experiences and hints for industrial applications.