Investigation of winding cooling enhancement and thermal modelling of large‐power high‐torque‐density direct‐drive PMSM

IF 1.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Iet Electric Power Applications Pub Date : 2023-08-17 DOI:10.1049/elp2.12351

Yongda Song, Yue Zhang, Shi Jin, Zhenyao Xu, Feng Zhang

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引用次数: 1

Abstract

Large‐power high‐torque‐density direct‐drive permanent magnet synchronous motors (LHDPMSM) are more and more frequently used to drive ball mills, belt conveyors, scraper conveyors, etc. Aiming at the characteristics of large copper loss and high winding temperature rise of the LHDPMSM, an effective winding cooling enhancement technology based on winding overall potting (WOP) is presented. The manufacturing process and cooling principle of WOP is described in detail and compared with the traditional vacuum pressure impregnation (VPI). In order to solve the problem of complex modelling process and long calculation time of LHDPMSM thermal field caused by large volume and asymmetric fluid cooling structure, the lumped parameter thermal network (LPTN) considering both fluid cooling and winding potting is proposed. Then, the cooling capacity of WOP and VPI are compared by LPTN, and the influence of some major cooling system parameters on LHDPMSM temperature rise are also researched. Finally, in order to verify the correctness of the theoretical calculation results, two 450 kW LHDPMSM prototypes adopt WOP and VPI are manufactured, tested and compared. The theoretical and experimental results are highly consistent, which proves the effectiveness of WOP in winding cooling enhancement of LHDPMSM.

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大功率高转矩密度直驱永磁同步电机绕组冷却增强和热建模研究

大功率高转矩密度直接驱动永磁同步电机（LHDPMSM）越来越频繁地用于驱动球磨机、带式输送机、刮板输送机等，提出了一种基于绕组整体灌封（WOP）的有效绕组冷却增强技术。详细介绍了WOP的制造工艺和冷却原理，并与传统的真空压力浸渍（VPI）进行了比较。为了解决大体积、不对称流体冷却结构导致LHDPMSM热场建模过程复杂、计算时间长的问题，提出了同时考虑流体冷却和绕组灌封的集总参数热网络（LPTN）。然后，通过LPTN对WOP和VPI的冷却能力进行了比较，并研究了一些主要冷却系统参数对LHDPMSM温升的影响。最后，为了验证理论计算结果的正确性，制造了两台采用WOP和VPI的450 kW LHDPMSM样机，并进行了测试和比较。理论和实验结果高度一致，证明了WOP对LHDPMSM绕组冷却增强的有效性。

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来源期刊

Iet Electric Power Applications 工程技术-工程：电子与电气

CiteScore

4.80

自引率

5.90%

发文量

104

审稿时长

3 months

期刊介绍： IET Electric Power Applications publishes papers of a high technical standard with a suitable balance of practice and theory. The scope covers a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis are also sought, provided that the arguments are conveyed succinctly and the conclusions are clear. The scope of the journal includes the following: The design and analysis of motors and generators of all sizes Rotating electrical machines Linear machines Actuators Power transformers Railway traction machines and drives Variable speed drives Machines and drives for electrically powered vehicles Industrial and non-industrial applications and processes Current Special Issue. Call for papers: Progress in Electric Machines, Power Converters and their Control for Wave Energy Generation - https://digital-library.theiet.org/files/IET_EPA_CFP_PEMPCCWEG.pdf