Title :
Electromagnetic and vibrational characteristic of IPM over full torque-speed range
Author :
Zhi Yang ; Krishnamurthy, Mahesh ; Brown, Ian P.
Author_Institution :
Electr. Drives & Energy Conversion Lab., Illinois Inst. of Technol., Chicago, IL, USA
Abstract :
This paper investigates the electromagnetic and vibrational characteristic of an interior permanent magnet machine (IPM) over the entire torque-speed range based on the model of 2004 Toyota Prius IPM motor. First, the dominant electromagnetic radial force directly causing vibration is calculated based on optimal operating plane, which covered by maximum torque per ampere (MTPA), current limit curve, and maximum torque per volt (MTPV) curve. Next, vibration behavior of the stator is studied by using modal and structural analysis in ANSYS workbench environment. It is observed that electric vehicle (EV) application deserves closer attention as more resonant vibration points may appear. To simultaneously meet the efficiency and NVH (noise vibration and harshness) requirements the pole-slot number and control strategy should be carefully chosen.
Keywords :
electric vehicles; electromagnetism; permanent magnet machines; stators; ANSYS; NVH; control strategy; current limit curve; electric vehicle application; electromagnetic characteristic; electromagnetic radial force; full torque-speed range; harshness requirements; interior permanent magnet machine; maximum torque per ampere; maximum torque per volt; modal analysis; noise vibration; pole-slot number; resonant vibration points; stator; structural analysis; vibrational characteristic; Electromagnetics; Force; Harmonic analysis; Stator windings; Torque; Vibrations; Electric Vehicle; Electromagnetic Radial Force; IPM; Vibration;
Conference_Titel :
Electric Machines & Drives Conference (IEMDC), 2013 IEEE International
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-4975-8
Electronic_ISBN :
978-1-4673-4973-4
DOI :
10.1109/IEMDC.2013.6556267
