Title :
Analysis and Optimization of a Novel Tubular Staggered-Tooth Transverse-Flux PM Linear Machine
Author :
Ping Zheng ; Shaohong Zhu ; Bin Yu ; Luming Cheng ; Yuhui Fan
Author_Institution :
State Key Lab. of Robot. & Syst., Harbin Inst. of Technol., Harbin, China
Abstract :
A novel tubular staggered-tooth transverse-flux permanent magnet linear synchronous machine is proposed. The machine is characterized by simple structure and low flux leakage. First, the structure and the operational principle are introduced. Second, the 3-D equivalent magnetic circuit model of the machine is built, and the analytical expression of the electromagnetic force is derived. Last, the force density and the force ripple are optimized with respect to three key dimensional ratios by the 3-D finite-element method. An optimized scheme with the high force density of 2.697 × 105 N/m3 and the low force ripple of 2.78% is achieved. In addition, the characteristics of the proposed machine are compared with other topologies of linear machines.
Keywords :
electromagnetic forces; equivalent circuits; finite element analysis; linear machines; magnetic circuits; optimisation; permanent magnet machines; synchronous machines; 3D equivalent magnetic circuit; 3D finite element method; electromagnetic force; force density; force ripple; low flux leakage; permanent magnet linear synchronous machine; simple structure; tubular staggered-tooth transverse-flux machine; Electromagnetic forces; Force; Integrated circuit modeling; Magnetic circuits; Magnetic cores; Solid modeling; Stator cores; 3-D finite element method (FEM); 3-D finite-element method (FEM); Equivalent magnetic circuit model; equivalent magnetic circuit model; linear machine; thrust force; transverse flux; transverse-flux;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2443182
