Miniaturized Air-Driven Planar Magnetic Generators

作者：Zhao Jingjing; Shi Gengchen; Du Lin^*

来源：Energies, 2015, 8(10): 11755-11769.

DOI：10.3390/en81011755

• magnetic generator
• miniaturized generator
• planar generator
• air-driven generator

This paper presents the design, analysis, fabrication and testing of two miniaturized air-driven planar magnetic generators. In order to reduce the magnetic resistance torque, Generator 1 establishes a static magnetic field by consisting a multilayer planar coil as the stator and two multi-pole permanent-magnet (PM) rotors on both sides of the coil. To further decrease the starting torque and save more space, Generator 2 adopts the multilayer planar coil as the rotor and the multi-pole PMs as the stator, eliminating the casing without compromising the magnetic structure or output performance. The prototypes were tested gathering energy from wind which can work at a low wind speed of 1 similar to 2 m/s. Prototype of Generator 1 is with a volume of 2.61 cm(3) and its normalized voltage reaches 485 mV/krpm. Prototype of Generator 2 has a volume of 0.92 cm(3) and a normalized voltage as high as 538 mV/krpm. Additionally, output voltage can be estimated at better than 96% accuracy by the theoretical model developed in this paper. The two micro generators are capable of producing substantial electricity with little volume to serve as compact power conversion devices.

• 出版日期2015-10
• 单位清华大学; 北京理工大学