Thermal Field Calculation Method for Deep-sea Permanent Magnet Synchronous Motor Considering High-pressure Environment

HUANG Juyan; XU Yongxiang; XIAO Lijun; ZOU Jibin; {{custom_author.name_en}}

doi:10.13334/j.0258-8013.pcsee.250656

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Thermal Field Calculation Method for Deep-sea Permanent Magnet Synchronous Motor Considering High-pressure Environment

更新时间：2026-10-12

- Thermal Field Calculation Method for Deep-sea Permanent Magnet Synchronous Motor Considering High-pressure Environment
- Vol. 46, Issue 8, Pages: 3407-3418(2026)
- 作者机构：
  
  哈尔滨工业大学电气工程及自动化学院,黑龙江省,哈尔滨市,150006
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.250656
  CLC：
- Received：24 July 2025，
  
  Published：2026
- 稿件说明：
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HUANG Juyan, XU Yongxiang, XIAO Lijun, et al. Thermal Field Calculation Method for Deep-sea Permanent Magnet Synchronous Motor Considering High-pressure Environment[J]. 2026, 46(8): 3407-3418.
DOI：

HUANG Juyan, XU Yongxiang, XIAO Lijun, et al. Thermal Field Calculation Method for Deep-sea Permanent Magnet Synchronous Motor Considering High-pressure Environment[J]. 2026, 46(8): 3407-3418. DOI： 10.13334/j.0258-8013.pcsee.250656.

摘要

该文提出一种考虑深海高压强环境的深海永磁同步电机(deep-sea permanent magnet synchronous motors，DSPMSMs)温度场计算方法，旨在解决该类型电机温度场准确计算的问题。DSPMSMs内流体场变化会影响温度场计算，鉴于深海高压强环境会改变流体的特性，首先，探究不同压强下流体特性的变化规律，基于此分析高压强环境对流体场的影响；然后，针对DSPMSMs中的流体场探讨粘滞阻力损耗和内部端部表面散热系数的计算问题；其次，基于流体场的分析，提出一种计算流体力学(compu- tational fluid dynamics，CFD)法与有限元法(finite element method， FEM)法结合的DSPMSMs的温度场计算方法；最后，通过与传统CFD方法的对比及实验验证，验证了该方法的准确性及优越性。

Abstract

This paper proposes a thermal field calculation method for deep-sea permanent magnet synchronous motors (DSPMSMs) considering the deep-sea high-pressure environment

which aims to solve the issue that the current thermal field calculation method can not balance the accuracy and efficiency of calculation. The change of the fluid field in DSPMSMs affects the temperature field calculation. The change of fluid field in DSPMSMs will affect the temperature field calculation. Given that the deep-sea high-pressure environment alters the fluid properties

this paper first explores the change law of fluid properties under different pressures and analyzes the effect of high-pressure environment on the fluid field accordingly. Then

the calculation of viscous drag loss and internal end-surface heat transfer coefficients for the fluid field in DSPMSMs is explored. Subsequently

based on the analysis of the fluid field

a compu- tational fluid dynamics (CFD) method combined with the finite element method (FEM) method is proposed for the calculation of the thermal field of DSPMSMs. Finally

the accuracy and superiority of the method are verified by comparison with the traditional CFD method and experimental validation.

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