Design and Analysis of Oil-Immersed Cooling Stator With Nonoverlapping Concentrated Winding for High-Power Ironless Stator Axial-Flux Permanent Magnet Machines

被引：34

作者：

Liu, Ye ^{[1
]}

Zhang, Zhuoran ^{[1
]}

Wang, Chen ^{[1
]}

Geng, Weiwei ^{[2
]}

Yang, Tao ^{[3
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Ctr More Elect Aircraft Power Syst, Nanjing 211106, Peoples R China

[2] Nanjing Univ Sci & Technol, Sch Automat, Nanjing 210094, Peoples R China

[3] Univ Nottingham, Dept Elect & Elect Engn, Power Elect Machines & Control Grp, Nottingham NG7 2RD, England

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2021年 / 68卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Stator windings; Windings; Cooling; Stator cores; Torque; Energy storage; Axial-flux PM (AFPM) machine; high speed; ironless stator; mechanical strength; oil-immersed forced cooling; PM-MACHINES; OPTIMIZATION; SYSTEM;

D O I：

10.1109/TIE.2020.2978694

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Ironless stator axial-flux permanent magnet (AFPM) machines provide many attractive electromagnetic performances such as high efficiency in high-frequency mode and strong short-term overload ability, which make them more competitive in flywheel energy storage applications. However, designing high-torque-density AFPM machines, particularly their ironless stators, is with significant challenges and needs great efforts. In this article, a high-strength oil-immersed cooling stator with nonoverlapping concentrated winding is proposed for high-power ironless stator AFPM machine applications. This article explains in detail the design, analysis, and manufacturing process of the proposed oil-immersed cooling stator. With the three-dimensional finite-element analysis (3-D FEA), a 9000-r/m/50-kW 12-slot/10-pole prototype for a flywheel energy storage system is successfully designed and developed using the proposed high-strength oil-immersed cooling ironless stator. The experimental test results demonstrate the effectiveness of the cooling design and mechanical strength.

引用

页码：2876 / 2886

页数：11

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