Numerical simulation of the electromagnetic torques of PMSM with two-way magneto-mechanical coupling and nonuniform spline clearance in electric submersible pumping wells  

作　　者：Xin-Fu Liu Chun-Hua Liu Ying Zheng Ji-Fei Yu Wei Zhou Meng-Xiao Wang Peng Liu Yi-Fei Zhou 

机构地区：[1]Key Lab of Industrial Fluid Energy Conservation and Pollution Control(Ministry of Education),Qingdao University of Technology,Qingdao,266520,Shandong,China [2]College of Mechanical and Electronic Engineering,China University of Petroleum(East China),Qingdao,266580,Shandong,China [3]Department of Chemical and Biochemical Engineering,Western University,Ontario,N6A 3K7,Canada [4]CNOOC Research Institute Ltd.,CNOOC,Beijing,100028,China

出　　处：《Petroleum Science》2024年第6期4417-4426,共10页石油科学(英文版)

基　　金：financially supported by National Natural Science Foundation of China(Grant Nos.52074161 and 52005281);Taishan Scholar Project of Shandong Province(Grant No.tsqn202211177);Shandong Provincial Plan for Introduction and Cultivation of Young Pioneers in Colleges and Universities(Grant No.2021-Qing Chuang-30613019);Natural Science Foundation of Shandong Province(Grant Nos.ZR2022ME173 and ZR2023QE011);Projects of CNOOC Research Institute Ltd.(Grant Nos.CCL2023RCPS0237RSN and CCL2023RCPS0319RSN)。

摘　　要：Clearance-fit(side-fit)spline joints are a key component in a permanent magnet synchronous motor(PMSM)in electric submersible pumping wells.The nonuniform spline clearance affects the output performance of a PMSM.A concept for energy conservation is optimized in this study to improve the modeling accuracy of electromagnetic torque.However,most existing computation models are one-way model with a magneto-mechanical simulation.In this study,a more accurate two-way coupling method is presented for simulating the electromagnetic and mechanical characteristics of PMSM.Additionally,importance should be attached to this two-way magneto-mechanical coupling methodology in an actual simulation.The coupled power,electrical and magnetic energy,and electromagnetic torque equations are solved iteratively until convergence for PMSMs with a segmented rotor and a non-segmented rotor.The optimal electromagnetic torque is obtained for different rotor configurations with the change of temperatures and rotational speeds.The results show that the output performance and electromagnetic torque of the PMSM are seriously affected by the effects of two-way magneto-mechanical coupling and nonuniform spline clearance.The proposed two-way coupling model gives more reasonable predictions than other one-way models do,because the power transfer between the electrical and magnetic energy can be modeled more accurately.The self-centralizing performance of clearance-fit splines and the sensitivity to the radial clearance magnitude lead to the reduction of the electromagnetic torque for the PMSM.Additionally,the electromagnetic torques decrease with the enhanced rotor temperatures and rotational speeds.The best rotor temperature and rotational speed are chosen through a comparison of the experimental results,and then the optimal electromagnetic torque is provided to ensure the output performance of the PMSM in electric submersible pumping wells.

关 键 词：Permanent magnet synchronous motor Two-way coupling Magneto-mechanical coupling Nonuniform splineclearance Electromagnetic torque 

分 类 号：TE93[石油与天然气工程—石油机械设备]