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Investigation of an Intensifying-flux Variable Flux-leakage Interior Permanent Magnet Machine for wide speed range

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CES Transactions on Electrical Machines and Systems 2022年第2期6卷 207-215页

作者： Xiping Liu Dabin Liu Siting Zhu Jianwei Liang School of Electrical Engineering and Automation Jiangxi University of science and technologyGanzhou 34100China

In this paper,a novel intensifying-flux variable flux-leakage interior permanent magnet(IFVF-IPM)machine is proposed,in which flux barriers were designed deliberately between the adjacent poles to obtain intensifying-flux effect and variable flux-leakage *** rotor topology and design principles of the proposed machine are also ***,a multi-objective optimization method is adopted based on the sensitivity analysis,and some design variables of IFVF-IPM machine with strong sensitivity are selected to optimization progress by using the non-dominated sorting genetic algorithm-Ⅱ(NSGA-Ⅱ).Moreover,the electromagnetic characteristics of conventional IPM machine,conventional IFVF-IPM machine(CIFVF-IPM)and the novel IFVF-IPM machine are compared based on the finite element analysis(FEA)method which includes flux linkage,inductances characteristic,torque-speed envelops and power characteristic,as well as evaluation of the risk of irreversible ***,the experiment results show that the IFVF-IPM machine has a better performance in flux weakening capability for wide speed range and a lower risk of irreversible demagnetization,which indicates the validity and feasibility of the proposed machine.

关键词： Interior permanent magnet(IPM)machine Intensifying-flux Variable flux-leakage Electromagnetic performance Demagnetization Finite element analysis(FEA) wide speed range

Design and Analysis of wide speed Regulation of Variable Leakage Flux Reverse Salient-pole Motor

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CES Transactions on Electrical Machines and Systems 2023年第3期7卷 284-293页

作者： Xiping Liu Siting Zhu Dabin Liu Jianwei Liang Jiangxi University of Science and Technology Ganzhou 341000China

In this article, a new variable leakage flux reverse salient-pole motor(VLF-RSPM) is raised to widen the speed range. The innovation is to realize both reverse salient-pole characteristics and variable leakage flux characteristics by using a method of adding magnetic bridges and magnetic barriers. Firstly, the evolution of the topological structure and working principle of the motor are introduced. Secondly, based on 2D Finite Element Analysis(FEA), the electromagnetic properties and noise of the motor are analyzed in detail, and the electromagnetic properties are contrasted with that of the conventional V-type synchronous motor(CVTSM). The results show that VLF-RSPM has the advantages of small torque ripple, strong magnetic weakening ability, low noise, high efficiency, and low risk of permanent magnet demagnetization under different conditions. In addition, it is verified that the proposed motor extends the speed range.

关键词： Reverse salient-pole Variable leakage flux FEA wide speed range

Design and Optimization of Reverse Salient Permanent Magnet Synchronous Motor Based on Controllable Leakage Flux

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CES Transactions on Electrical Machines and Systems 2021年第2期5卷 163-173页

作者： Longxin Du Xiping Liu Jiesheng Fu Jianwei Liang Chaozhi Huang Jiangxi University of Science and Technology Ganzhou 341000China

In this paper,a controllable leakage flux reverse salient permanent magnet synchronous motor(CLF-RSPMSM)is designed,which has the advantages of wide speed range and low irreversible demagnetization ***,the principle of controllable leakage flux and reverse saliency effect is introduced,and the design of the rotor flux barrier is emphatically ***,multiple design variables are stratified by the comprehensive sensitivity method,and the main variables are screened *** the relationship between the main variables and the optimization goal is discussed according to the response surface ***,a sequential nonlinear programming algorithm(SNP)is used to optimize the three optimization objectives ***,the electromagnetic performance of the proposed motor is compared with the initial IPM motor,the mechanical strength of the proposed rotor is analyzed,and the results verify the effectiveness of the design and optimization method of the proposed motor.

关键词： Controllable leakage flux reverse saliency comprehensive sensitivity multi-objective optimization wide speed range