A linear motor design provides close and secure vehicle separation of many transit vehicles on a guideway



Author: Justin Batelaan


A technical paper with this title will be published in the June 2007 issue of IEEE Transactions on Industrial Electronics.  It is now available on line at IEEE Xplore or through this link, IPELM paper.   Below is a summary of the paper.



Summary Automated urban transit systems have been proposed for some time with limited attention to propulsion and control of many vehicles on a guideway.  This is a particular critical requirement for Personal Rapid Transit (PRT) systems and an urban maglev transit system proposed by MagneMotion, the M3.  The linear synchronous motor (LSM), as proposed for M3, has severe limitations.  A modification of LSM is described, called “individual pole excitation linear motor” (IPELM), to meet the requirements of M3.  The armature of IPELM consists of individual coils, incorporated in the guideway, which are powered separately under central control.  An outline of IPELM design is presented for consideration and further development.  Safety issues are reviewed for this linear motor.  The main advantage of IPELM over LSM is the ability to control many vehicles on the same guideway with a very short headway and space between vehicles.  A further development of IPELM makes it possible to design a continuous, non-stop transit system with a high schedule speed between many on line stations.



Last modified: May 29, 2007