Axial-flux permanent magnet machines for micropower generation

被引:125
作者
Holmes, AS [1 ]
Hong, GD
Pullen, KR
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Elect & Elect Engn, London SW7 2BT, England
[2] Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, London SW7 2BX, England
基金
英国工程与自然科学研究理事会;
关键词
axial-flow microturbine; energy harvesting; laser micromachining; permanent magnet machine; power generator; power MEMS;
D O I
10.1109/JMEMS.2004.839016
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper reports on the design, fabrication, and testing of an axial-flux permanent magnet electromagnetic generator. The generator comprises a polymer rotor with embedded permanent magnets sandwiched between two silicon stators with electroplated planar coils. Finite element simulations have been carried out using ANSYS to determine the effects on performance of design parameters such as the number of layers in the stator coils, and the rotor-stator gap. The effect of including soft magnetic pole pieces on the stators has also been studied. A prototype device with a diameter of 7.5 mm has been tested, and shown to deliver an output power of 1.1 mW per stator at a rotation speed of 30000 rpm. The generator has been integrated with a microfabricated axial-flow microturbine to produce a compact power conversion device for power generation and flow sensing applications.
引用
收藏
页码:54 / 62
页数:9
相关论文
共 24 条
[21]   Closely coupled micro coils with integrated flux guidance:: Fabrication technology and application to proximity and magnetoelastic force sensors [J].
Seidemann, V ;
Büttgenbach, S .
IEEE SENSORS JOURNAL, 2003, 3 (05) :615-621
[22]   A new fabrication process of a planar coil using photosensitive polyimide and electroplating [J].
Watanabe, Y ;
Edo, M ;
Nakazawa, H ;
Yonezawa, E .
SENSORS AND ACTUATORS A-PHYSICAL, 1996, 54 (1-3) :733-738
[23]  
WIEGELE TG, 1996, P IECE 96, V4, P2308
[24]  
WILLIAMS CB, 2001, IEE P CIRCUIT DEVICE, V148