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A novel axial reluctance resolver proposal and its winding configuration optimization using winding function method

ENERGY REPORTS 2022年 8卷 705-712页

作者： Ran, Xiaohe Zhao, Meng Shang, Jing Harbin Inst Technol Elect Engn Dept Harbin 150001 Peoples R China

The analytical model of a novel axial reluctance resolver based on finite element method and winding function method is proposed in this paper. The developed resolver is composed of a rotor with half-wave magnetic-bands and a stator with parallel teeth, which can simplify the manufacturing process and convenient for mass production. The anti-interference of the sinusoidal distributed winding configuration is verified using winding function method, and the results of the proposed method under constant and sinusoidal distributed winding configurations are compared with the finite element method in terms of accuracy and computation costs. Additionally, the robustness of the half-wave resolver in the case of axial offset is illustrated and verified with theoretical explanation and numerical simulation. The accuracy of the proposed resolver under healthy and offset conditions are compared and summarized. Compared with the traditional resolver, the half-wave axial reluctance resolver has simpler processing, higher precision and stronger anti-interference. Finally, the results of simulation and the theoretical analysis verified the success of design and analysis processing. (C) 2022 The Author(s). Published by Elsevier Ltd.

关键词： Finite element method Half-wave axial reluctance resolver winding function method Sinusoidal distributed winding

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Design and optimization of a large-scale permanent magnet synchronous generator

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SCIENTIA IRANICA 2022年第1期29卷 217-229页

作者： Alemi-Rostami, M. Rezazadeh, G. Alipour-Sarabi, R. Tahami, F. Minist Sci Res & Technol Aerosp Res Inst Dept Elect Engn Tehran Iran Sharif Univ Technol Dept Elect Engn Tehran Iran

Direct-drive permanent magnet synchronous generators enjoy numerous advantages including improved reliability, low maintenance, long life, and developed performance characteristics. In recent years, many researchers have worked on these generators to enhance their performance, especially for the wind turbine application. The focus of this paper is on the development of a step-by-step method for the design of a permanent magnet synchronous generator. Then, the winding function method is used to model the generator and calculate its output characteristics analytically. The analytical results of the designed generator are validated using Finite Element Analysis (FEA) and it is demonstrated that the obtained results from both methods are in great agreement with the experimental measurements of the Northern Power direct-drive generator. The sensitivity analysis and optimization procedure based on genetic algorithm are employed to design an optimum generator. The optimization goal is obtaining higher efficiency and power factor with lower voltage regulation and required permanent magnet volume compared to the initial design. In addition, the calculation of the voltage Total Harmonic Distortion (THD) is presented and the optimum skew angle for the optimum generator is computed to reduce the voltage THD. (C) 2022 Sharif University of Technology. All rights reserved.

关键词： Direct-drive permanent magnet synchronous generator Design and optimization winding function method Performance calculation Voltage THD calculation Optimum skew angle

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winding MMF and PM MMF Analysis of Axial-Flux Machine with Multi-Phase and Multi-Layer winding

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ENERGIES 2021年第16期14卷 5147页

作者： Chen, Qixu Li, Guoli Cao, Wenping Qian, Zhe Wang, Qunjing Anhui Univ Collaborat Innovat Ctr Ind Energy Saving & Power Minist Educ Engn Res Ctr Power Qual Hefei 230601 Peoples R China

According to star graph and winding distribution, winding MMFs of three kinds of 12-slot/10-pole multi-phase and multi-layer winding layout are analyzed by the improved winding function method. Analysis results show that multi-phase and multi-layer winding can suppress even order and (12n +/- 1) order harmonics, thereby reducing the eddy-current loss in PMs. Based on the unfolded LPMSM model, rotor MMF, air gap flux density, and no-load back-EMF are analyzed by the analytical permeance function method, which is validated by Teslameter and no-load experiment. winding MMF is validated by FEM. An axial-flux integrated starting/generator (ISG) with double-three-phase four-layer (DTP-FL) winding, segmented armature and PM, and centrifugal fan is designed and manufactured. The no-load and load test with two groups of resistance established has validated the reasonability of the mentioned method. Experiments show that the axial-flux ISG prototype can run at a relative temperature rise.

关键词： axial-flux integrated starting generator (ISG) multi-phase multi-layer winding PM MMF winding MMF winding function method air permeance function method

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winding function Model of a 6/7 Variable Flux Reluctance Machine 11

Winding Function Model of a 6/7 Variable Flux Reluctance Mac...

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11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)

作者： Mirnikjoo, Seyed Armin Abbaszadeh, Karim Abdollahi, Seyed Ehsan KN Toosi Univ Technol Dept Elect Engn Tehran Iran Babol Noshirvani Univ Technol Elect & Comp Engn Dept Babol Iran

ISBN: (纸本)9781728158495

Variable Flux Reluctance Machine (VFRM) is robust due to the fact that there isn't any windings or Permanent Magnets (PMs) on its rotor structure. Therefore, VFRMs are potential candidates for so many applications including electric vehicles and wind turbines. Consequently, developing a fast and accurate method for its electromagnetic performance analysis is essential. Although Finite Elements method (FEM) is an accurate method, it is suffering from high simulation time. There are some other methods but they cannot easily apply to all topologies. winding function is a fast modelling method for analyzing electric machines performance. Therefore, in this paper, winding function modeling of a VFRM is proposed. In this regard, the concept of VFRMs and winding function modelling procedure is presented. Also, a 6 stator and 7 rotor poles VFRM is modelled by winding function method (WFM) and the results are compared with the experimental results which proves that WFM is an efficient modelling and analysis tool.

关键词： variable flux reluctance machine finite elements method winding function method magnetic equivalent circuit analysis an imaginary boundary inductance

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A New method to Model Damper windings in the Salient Pole Synchronous Machine 10

A New Method to Model Damper Windings in the Salient Pole Sy...

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10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC)

作者： Hemmati, Siroos Saeid, Seyed Amin Kermanshah Univ Technol Kermanshah Iran Azad Univ Yazd Yazd Iran

ISBN: (纸本)9781538692547

This paper proposes a new method to find winding function for damper bars. The damper bars in a salient pole synchronous machine (SPSM) are shorted together and dissimilar currents can obviously flow in each of the shorted bars and the winding function technique seems to be unable in solving this problem. However, in this paper it will be shown that the winding function Theory can still be used. Using this winding function for the damper bars, machine inductances are computed. To demonstrate the correctness of the proposed method, the Finite Element method (FEM) simulation has been employed.

关键词： damper bars winding function method salient pole synchronous generator

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Influence of winding Distribution on Fault Tolerant Performance in a Fault-Tolerant Permanent Magnet Rim Driven Motor

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IEEE ACCESS 2019年 7卷 183236-183244页

作者： Ma, Rui Zhu, Jingwei Lin, Qianhong Zhang, Yanbin Dalian Maritime Univ Coll Marine Elect Engn Dalian 116026 Peoples R China

The Fault-Tolerant Permanent Magnet Rim Driven Motor (FTPM-RDM) is a high performance, high reliability marine driven motor. The short-circuit current and the mutual inductance voltage generated by the short-circuit current are important parameters to indicate the fault-tolerant performance of a motor. Increasing self-inductance and decreasing mutual inductance is an important method to improve fault tolerance of a FTPM-RDM. In this paper, the influence of positive wounded winding structure and positive and negative wounded winding structure of a 24-slot motor on the self-inductance and mutual inductance is analyzed by the winding function method. The conclusion that the positive and negative wounded winding structure has high self-inductance and low mutual inductance is revealed. This conclusion is generalized to the winding design in a general structure motor, and a generalized method of winding reconstruction is proposed. The simulation results show that the proposed winding reconstruction method can effectively increase self-inductance and significantly reduce mutual inductance to improve the fault tolerance of a FTPM-RDM. A motor prototype is produced and the experimental results have verified the correctness and feasibility of the proposed method.

关键词： Fault-tolerant permanent magnet rim driven motor short-circuit current self-inductance and mutual inductance winding function method winding distribution

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Current analysis of large submersible motor under curved eccentricity by multi-loop method

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INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS 2017年第1期53卷 63-76页

作者： Bao, Xiaohua Cheng, Zhiheng Di, Chong Hefei Univ Technol Sch Elect Engn & Automat Hefei 230009 Anhui Peoples R China

Air-gap eccentricity is commonly occurred in large induction motors, especially submersible motors. Based on this failure, a more accurate curved eccentricity model is established and current analysis of the faulty machine is conducted in this paper. To carry out calculation, winding function method is proposed aiming at calculation of the inductance matrix in the multi-loop model and theoretical derivation is also presented. A curved eccentricity model is set up by simulating the deflection of the shaft and such model is applied to prototype (1200 kW submersible motor). By analyzing harmonic characteristics in line current, the result proves feasibility of current monitoring on curved eccentricity.

关键词： Curved eccentricity winding function method induction motor current analysis

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A detailed model of disk type linear induction machines

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INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS 2015年第9期25卷 1736-1747页

作者： Tosifian, Mohammad Hassan Nazarzadeh, Jalal Islamic Azad Univ Saveh Branch Dept Elect Engn Saveh Iran Shahed Univ Engn Facil Tehran Iran

In this paper, a new dynamic model for disk-type linear induction machines (LIMs) is introduced. In this model, the rotor is divided into two regions where regions 1 and 2 are under and out of stator, respectively. In the second region, the rotor is not magnetically coupled with magnetic circuit of the stator, whereas magnetic circuit of region 1 of the rotor is magnetically coupled with magnetic circuit of the stator. A winding function approach is developed and used for calculation of new model inductances. Also, a prototype disk-type LIM is used to produce the experimental results and show the validity of the introduced model. The results showed that the new model can represent the end effect of LIM, dynamically. Copyright (C) 2014 John Wiley & Sons, Ltd.

关键词： dynamic model end effect linear induction machine rotary machine winding function method

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Analysis on Performance of Linear Induction Motor Basing on winding function method

Analysis on Performance of Linear Induction Motor Basing on ...

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4th IEEE Conference on Industrial Electronics and Applications

作者： Xu, Wei Zhu, Jianguo Guo, Youguang Tan, Longcheng Wang, Shuhong Univ Technol Sydney Fac Engn & Informat Technol Sydney NSW 2007 Australia Acad Sci Inst Elect Engn Chinese Beijing Peoples R China Xi An Jiao Tong Univ Fac Elect Engn Xian Peoples R China

ISBN: (纸本)9781424427994

winding function method is adopted in this paper basing on air-gap magnetic flux density equations, and a new equivalent circuit is presented so as to analyze single linear induction motor (SLIM) applied in linear metro. Steady and dynamic performances of SLIM can be predicted by this circuit considering end effects, half filled slots, saturated iron and skin effect. To begin with, Dynamic situation under constant current constant frequency and several stable cases like constant current constant frequency or variable frequencies, constant voltage constant frequency or variable frequencies are presented in detail. Then, dynamic characteristics of SLIM under slip frequency control in both constant current and voltage drive regions are investigated. Furthermore, comparisons between conclusions on phase current, thrust, efficiency of high power SLIM and experimental results are made. The results indicate that winding function method is definitely reasonable to describe performance of SLIM, especially its end effects. It can be used in the design and performance prediction of SLIM.

关键词： linear induction machine (LIM) end effect edge effect winding function method linear metro performance

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Design and analytical inductance calculations of five-phase fault-tolerant permanent-magnet Machine 17

Design and analytical inductance calculations of five-phase ...

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17th IEEE International Conference on Electrical Machines and Systems (ICEMS)

作者： Wang, Pengfei Zheng, Ping Sui, Yi Wu, Fan Cheng, Luming Li, Tiecai Harbin Inst Technol Sch Elect Engn & Automat Harbin Heilongjiang Peoples R China

ISBN: (纸本)9781479951628

Multiphase fault-tolerant machines have many advantages, such as high reliability, high-power transmission under low voltage and so on. Therefore, they are attracting more and more attention in recent research. A design method for the multiphase fault-tolerant machine is proposed in this paper. The five-phase fault-tolerant permanent-magnet machine designed by the method realizes thermal, magnetic, electrical and physical isolations among phases, and it satisfies all the requirements of the fault-tolerant machine. The inductance parameters of the machine play an important role in designing the control system. Therefore, an analytical approach to calculate the inductance parameters of the machine is put forward. The self-inductance and mutual-inductance are calculated, and the results are precise. The proposed method avoids the complexity caused by establishing the finite-element model of the machine. The inductance parameters obtained by the analytical method are consistent with the finite-element simulation results, which validates the effectiveness of this method.

关键词： Fault-tolerant machine Inductance calculation winding function method

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