Title :
Flux-Regulatable Characteristics Analysis of a Novel Switched-Flux Surface-Mounted PM Memory Machine
Author :
Hui Yang ; Heyun Lin ; Shuhua Fang ; Zhu, Z.Q. ; Yunkai Huang
Author_Institution :
Eng. Res. Center for Motion Control, Southeast Univ., Nanjing, China
Abstract :
A novel switched-flux (SF) surface-mounted permanent magnet (PM) memory machine is proposed by incorporating the flux-memorizable concept into the SF structure. It employs a temporary current pulse to magnetize/demagnetize the aluminum-nickel-cobalt (Al-Ni-Co) PMs so that the air-gap flux can be regulated online for extending its high-speed constant-power region. An analytical hysteresis modeling method is formulated and implemented by numerical nonlinear approximation of hysteresis loops, and then coupled with time-stepping finite element method to perform the analyses of both static and transient flux-regulatable characteristics. The preciseness of the coupling solution and the validity of machine design are verified by experimental results.
Keywords :
aluminium alloys; approximation theory; cobalt alloys; finite element analysis; nickel alloys; permanent magnet machines; Al-Ni-Co; SF PM memory machine; air-gap flux; analytical hysteresis modeling method; coupling solution; flux-memorizable concept; high-speed constant-power region; hysteresis loops; machine design; numerical nonlinear approximation; static flux-regulatable characteristics; switched-flux surface-mounted permanent magnet memory machine; temporary current pulse; time-stepping finite element method; transient flux-regulatable characteristics analysis; Couplings; Demagnetization; Magnetic hysteresis; Magnetization; Magnetostatics; Mathematical model; Saturation magnetization; Flux controllability; hysteresis modeling; memory machine; permanent magnet (PM) machine; switched-flux (SF);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2323331
