Improved Moving Coil Electric Machine for Internal Combustion Linear Generator

This paper investigates the use of moving coil linear machines (MCLM) in the internal combustion linear generator (ICLG), which is a novel solution for series hybrid electric vehicles, distributed generation, and emergency power supply. According to the analysis of the basic structure of MCLM, an improved tubular MCLM equipped with quasi-Halbach magnetized magnets is suggested and analyzed with a proposed equivalent magnetic circuit (EMC) model. Measurements on a 4-kN prototype show good agreement with the results from the EMC model. Compared with the reported moving magnet linear machines (MMLM) for the same application, the proposed machine has the merit of less moving mass, faster response, and better controllability.

[1]  Han-Wook Cho,et al.  Dynamic characteristic analysis and experiments of moving-magnet linear actuator with cylindrical Halbach array , 2005, IEEE Transactions on Magnetics.

[2]  W. M. Arshad.  A Low-Leakage Linear Transverse-Flux Machine for a Free-Piston Generator , 2003 .

[3]  P. Zheng,et al.  Research on a Tubular Longitudinal Flux PM Linear Generator Used for Free-Piston Energy Converter , 2007, IEEE Transactions on Magnetics.

[4]  Peter Van Blarigan,et al.  Homogeneous Charge Compression Ignition with a Free Piston: A New Approach to Ideal Otto Cycle Performance , 1998 .

[5]  M. Hippner,et al.  Iron loss analysis in linear dc motor , 1999, IEEE International Magnetics Conference.

[6]  S. Henriot,et al.  Computational design studies for a high-efficiency and low-emissions free piston engine prototype , 2004 .

[7]  Seok-Myeong Jang,et al.  Analysis and experimental verification of moving-magnet linear actuator with cylindrical Halbach array , 2004, IEEE Transactions on Magnetics.

[8]  Jiabin Wang,et al.  Design and Experimental Verification of a Linear Permanent Magnet Generator for a Free-Piston Energy Converter , 2007, IEEE Transactions on Energy Conversion.

[9]  Tsutomu Mizuno,et al.  Iron loss analysis of moving-coil-type linear DC motor , 2000 .

[10]  Douglas Carter,et al.  The Free Piston Power Pack: Sustainable Power for Hybrid Electric Vehicles , 2003 .

[11]  Jiabin Wang,et al.  A Linear Permanent Magnet Generator for a Free-Piston Energy Converter , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[12]  Yuyu Xu,et al.  Cylindrical linear Halbach arrays for permanent magnet tubular linear machines , 2008, 2008 International Conference on Electrical Machines and Systems.

[13]  C. Sadarangani,et al.  Use of transverse-flux machines in a free-piston generator , 2003, IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03..

[14]  J.P. Hong,et al.  Static characteristics of linear BLDC motor using equivalent magnetic circuit and finite element method , 2004, IEEE Transactions on Magnetics.

[15]  Yaohua Li,et al.  Optimization design of linear Halbach array , 2008, 2008 International Conference on Electrical Machines and Systems.

[16]  Xiaoyuan Wang,et al.  Effects of different permanent magnet structures on the air gap magnetic field of linear motors , 2008, 2008 World Automation Congress.

[17]  Xu Wei,et al.  Optimization design of linear Halbach array for EDS Maglev , 2008, 2008 IEEE Vehicle Power and Propulsion Conference.