Home > View > Focus

Design and analysis of a high loss density motor cooling system with water cold plates

2023-07-28

【论文推荐】沈阳工业大学赵鑫等：采用水冷板的高损耗密度电机冷却系统设计与分析

摘要

为了降低高损耗密度电机内部冷却的难度，本研究提出放置于电机定子轴向叠片之间的水冷板冷却结构。研究了冷却水流量、水冷板厚度和电机损耗密度对水冷板冷却效果的影响。在相同的损耗密度、冷却水流量和轴向尺寸条件下，以高损耗密度电机为样机建立了两种冷却结构的电机模型，比较水冷板和外螺旋水套冷却结构的冷却性能。结果如下：(1)水冷板结构的最高和平均温度比外螺旋水套电机分别降低了25.5% 和30.5%；(2)与外螺旋水套结构相比，水冷板结构可以减少电机的整体质量和体积。以100 kW高速永磁电机为例，为其设计水冷板冷却系统并分析了电机的温度场分布，结果表明该冷却结构可满足高损耗密度电机的冷却要求。

Design and analysis of a high loss density motor cooling system with water cold plates

采用水冷板的高损耗密度电机冷却系统设计与分析

Xin Zhao¹, Haojie Cui², Yun Teng¹, Zhe Chen³, Guangwei Liu¹

1.School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, P.R.China

2.Zhejiang PanGood Power Technology Co., Ltd., Jinhua 321100, P.R.China

3.Department of Energy Technology, Aalborg University, Aalborg 639220, Denmark

Abstract

Aiming at reducing the difficulty of cooling the interior of high-density motors, this study proposed the placement of a water cold plate cooling structure between the axial laminations of the motor stator. The effect of the cooling water flow, thickness of the plate, and motor loss density on the cooling effect of the water cold plate were studied. To compare the cooling performance of water cold plate and outer spiral water jacket cooling structures, a high-speed permanent magnet motor with a high loss density was used to establish two motor models with the two cooling structures. Consequently, the cooling effects of the two models were analyzed using the finite element method under the same loss density, coolant flow, and main dimensions. The results were as follows. (1) The maximum and average temperatures of the water cold plate structure were reduced by 25.5% and 30.5%, respectively, compared to that of the outer spiral water jacket motor; (2) Compared with the outer spiral water jacket structure, the water cold plate structure can reduce the overall mass and volume of the motor. Considering a 100 kW high-speed permanent magnet motor as an example, a water cold plate cooling system was designed, and the temperature distribution is analyzed, with the result indicating that the cooling structure satisfied the cooling requirements of the high loss density motor.

Keywords

Cooling system design; High loss density motor; Water cold plate; Temperature field analysis

Fig. 1 Internal waterway structure of water cold plate

Fig. 2 High-speed permanent magnet synchronous motor with water cold plate

Fig. 3 Relationship curve between effective cooling length and cooling water flow

Fig. 4 Relationship curve between effective cooling length and water cold plate thickness

Fig. 5 Relationship curve between effective cooling length and motor loss density

Fig. 6 Water cold plate motor and Spiral water jacket motor structure model

Fig. 7 Water cold plate motor and Spiral water jacket motor temperature field

Fig. 8 Comparison of axial temperature distribution of two structures

Fig. 9 Comparison of radial temperature distribution of two structures

Fig. 10 Flow chart of water cold plate design

Fig. 11 Model of 100 kW motor structure

Fig. 12 Temperature field of stator and winding

Fig. 13 Temperature field of sheath and permanent magnet

本文引文信息

Zhao X, Cui HJ, Teng Y, Chen Z, Liu GW (2023) Design and analysis of a high loss density motor cooling system with water cold plates, Global Energy Interconnection, 6(3): 343-354

赵鑫，崔豪杰，滕云，陈哲，刘光伟 (2023) 采用水冷板的高损耗密度电机冷却系统设计与分析. 全球能源互联网（英文）, 6(3): 343-354

Biographies

Xin Zhao

Xin Zhao received her master’s degree in control theory and control Engineering from Shenyang University of Technology,Shenyang, China, in 2008.She joined the Shenyang University of Technology in 2008,where she is currently a researcher in electrical engineering.Her research interests include Special motor and its control system.

Haojie Cui

Haojie Cui received his master’s degree from Shenyang University of Technology,Shenyang, China, in 2021.Now, he is working as an engineer in Zhejiang PanGood Power Technology Co., Ltd.Jinhua, China.His research interests include the design of motor cooling system and axial flux motor.

Yun Teng

Yun Teng received his doctor’s degree in electrical engineering from Shenyang University of Technology, Shenyang, China,in 2009.He joined the Shenyang University of Technology in 2010, where he is currently a professor in electrical engineering.He is a standing director as the IEEE PES DC Distribution Network Technical Subcommittee.His research interests include multi-energy system dispatching automation and smart grid control theory.

Zhe Chen

Zhe Chen received his B.Eng.and M.Sc.degrees from Northeast China Institute of Electric Power Engineering, Jilin City, China,and his Ph.D.degree from the University of Durham, Durham, U.K.He is a full professor with the Department of Energy Technology,Aalborg University, Aalborg, Denmark, where he is the leader of the Wind Power System Research program in the Department of Energy Technology.He is also the Danish Principle Investigator for Wind Energy of the Sino-Danish Centre for Education and Research.His research areas are power systems, power electronics and electric machines; and his main current research interests are wind energy and modern power systems.

Guangwei Liu

Guangwei Liu received his B.Eng., M.Sc.and Ph.D.degrees in electrical engineering from Shenyang University of Technology,Shenyang, China, in 2005, 2008 and 2015 separately.He joined the Shenyang University of Technology in 2008, where he is currently a full professor in school of electrical engineering.His major research interests and activities are in the areas of permanent magnet electrical machines and its drive.

编辑：王彦博

审核：王伟

郑重声明

根据国家版权局相关规定，纸媒、网站、微博、微信公众号转载、摘编本网站作品，需包含本网站名称、二维码等关键信息，并在文首注明《全球能源互联网》原创。个人请按本网站原文转发、分享。

Design and analysis of a high loss density motor cooling system with water cold plates

【论文推荐】沈阳工业大学 赵鑫等：采用水冷板的高损耗密度电机冷却系统设计与分析

郑重声明

【论文推荐】沈阳工业大学赵鑫等：采用水冷板的高损耗密度电机冷却系统设计与分析