Inhomogeneous Winding for Loosely Coupled Transformers to Reduce Magnetic Loss

Zhou Jing; He Jiazhong; Zhu Fan; Zhou Jing; He Jiazhong; Zhu Fan

doi:10.1155/2021/9453966

2021 Volume 8

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Inhomogeneous Winding for Loosely Coupled Transformers to Reduce Magnetic Loss

1.
Hainan Institute, Zhejiang University, Sanya 572025, China
2.
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
3.
Polytechnic Institute, Zhejiang University, Hangzhou 310015, China

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Corresponding author: Jing Zhou; jingzhou@zju.edu.cn

Wireless Power Transfer 8, Article number: 10.1155/2021/9453966 (2021) | Cite this article

Abstract

Wireless power transfer has been proved promising in various applications. The homogeneous winding method in loosely coupled transformers incurs unnecessary intense magnetic field distribution in the center and causes extra magnetic loss. An inhomogeneous winding method is proposed in this paper, and a relatively homogeneous magnetic field distribution inside the core is achieved. This paper investigated the magnetic loss of homogeneous winding and inhomogeneous winding for wireless power transfer. A theoretical model was built to evaluate magnetic loss under inhomogeneous winding. The coupling coefficient and magnetic loss were investigated individually and comparisons were made between different width ratio combinations. Theoretical analysis was validated in experiments.

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Zhou J, He J, Zhu F. 2021. Inhomogeneous Winding for Loosely Coupled Transformers to Reduce Magnetic Loss. Wireless Power Transfer. 8: 9453966 doi: 10.1155/2021/9453966

Zhou J, He J, Zhu F. 2021. Inhomogeneous Winding for Loosely Coupled Transformers to Reduce Magnetic Loss. Wireless Power Transfer. 8: 9453966 doi: 10.1155/2021/9453966

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Inhomogeneous Winding for Loosely Coupled Transformers to Reduce Magnetic Loss

1.
Hainan Institute, Zhejiang University, Sanya 572025, China
2.
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
3.
Polytechnic Institute, Zhejiang University, Hangzhou 310015, China

Corresponding author: Jing Zhou; jingzhou@zju.edu.cn

Wireless Power Transfer 8, Article number: 10.1155/2021/9453966 (2021) | Cite this article

Abstract: Wireless power transfer has been proved promising in various applications. The homogeneous winding method in loosely coupled transformers incurs unnecessary intense magnetic field distribution in the center and causes extra magnetic loss. An inhomogeneous winding method is proposed in this paper, and a relatively homogeneous magnetic field distribution inside the core is achieved. This paper investigated the magnetic loss of homogeneous winding and inhomogeneous winding for wireless power transfer. A theoretical model was built to evaluate magnetic loss under inhomogeneous winding. The coupling coefficient and magnetic loss were investigated individually and comparisons were made between different width ratio combinations. Theoretical analysis was validated in experiments.

About this article

Cite this article

Zhou J, He J, Zhu F. 2021. Inhomogeneous Winding for Loosely Coupled Transformers to Reduce Magnetic Loss. Wireless Power Transfer. 8: 9453966 doi: 10.1155/2021/9453966

Zhou J, He J, Zhu F. 2021. Inhomogeneous Winding for Loosely Coupled Transformers to Reduce Magnetic Loss. Wireless Power Transfer. 8: 9453966 doi: 10.1155/2021/9453966