Through-Hole Contactless Slipring System Based on Rotating Magnetic Field for Rotary Applications

被引:29
作者
Abdolkhani, Ali [1 ,2 ]
Hu, Aiguo Patrick [1 ,3 ]
Covic, Grant A. [1 ]
Moridnejad, Mahsa [4 ]
机构
[1] Univ Auckland, Auckland 1010, New Zealand
[2] PowerbyProxi Ltd, Auckland 1011, New Zealand
[3] Chongqing Univ, Chongqing 400044, Peoples R China
[4] PowerbyProxi Ldt, Auckland 1011, New Zealand
关键词
Contactless slipring; inductive power transfer; rotary applications; rotating magnetic field; rotating transformer; wireless power transfer; POWER TRANSFER; INFORMATION; INVERTER;
D O I
10.1109/TIA.2014.2312998
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Contactless slipring system based on inductive power transfer is a preferable alternative to mechanical slipring assemblies. They are designed to deliver required output power to a rotary shaft without direct electrical contacts. The current single or multiple-unit through-hole single-phase systems often have limited power transfer capability within a confined physical space; thus, they may not be able to meet the load requirement for certain applications such as wind power pitch control. This paper presents an integrated polyphase through-hole contactless slipring system by generating a rotating primary magnetic field coupled with balanced power pickups at the secondary side with zero mechanical driving torque on the shaft. A new index termed "mutual inductance per pole" is introduced to simplify the analysis of the mutually coupled polyphase system to a single-phase basis. Simulation and practical experiments have demonstrated that, with the same physical size, the proposed contactless slipring setup can transfer 55% more power compared with the existing single-phase counterpart.
引用
收藏
页码:3644 / 3655
页数:12
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