scholarly journals An Improvement of Magnetic Flux Linkage in Electrical Generator using the novel Permanent Magnet Arrangement

2018 ◽  
Vol 133 (3) ◽  
pp. 642-644 ◽  
Author(s):  
W. Sriwannarat ◽  
P. Khunkitti ◽  
A. Janon ◽  
A. Siritaratiwat
Keyword(s):  
Magnetic Flux ◽  
Permanent Magnet ◽  
The Novel ◽  
Flux Linkage ◽  
Electrical Generator

scholarly journals Optimal Stator Design of Doubly Salient Permanent Magnet Generator for Enhancing the Electromagnetic Performance

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3201
Author(s):  
Vannakone Lounthavong ◽  
Warat Sriwannarat ◽  
Apirat Siritaratiwat ◽  
Pirat Khunkitti
Keyword(s):  
Magnetic Flux ◽  
Permanent Magnet ◽  
Flux Distribution ◽  
Voltage Regulation ◽  
Design Technique ◽  
Flux Linkage ◽  
Cogging Torque ◽  
Doubly Salient ◽  
Electromagnetic Performance ◽  
Stator Design

An optimal stator design technique of a three-phase doubly salient permanent magnet generator (DSPMG) for improving the output power is proposed. The stator configuration was optimally designed by adjusting the stator pole depth and stator pole arc. The trapezoid outer stator tip was also designed. Then, the output characteristics of the designed DSPMG including the flux linkage, electromotive force (EMF), harmonic, cogging torque, efficiency, magnetic flux distribution and voltage regulation were characterized by using the finite element method. Results were compared to the original structure in the literature. It was found that the flux linkage, EMF, cogging torque, and efficiency of the proposed DSPMG were significantly improved after the stator pole depth and stator pole arc were suitably modified. Further details of optimal stator pole depth and stator pole arc are presented. The EMF produced by the optimal proposed structure was 47% higher than that of the conventional structure, while 56% cogging torque improvement and 20% increased efficiency were achieved. The EMF generated by the proposed structure was classified in the high-range scale compared to the other existing models. The symmetrical magnetic flux distribution of all structures was indicated. The voltage regulation of the modified structure was also significantly improved from the conventional model. The proposed design technique can be utilized to maximize the electromagnetic performance of this particular generator type.

Analysis on the Optimal Geometrical Parameters of Topology Power Optimized Coil Based on a Cylindrical Magnet for Vibration-Based Electromagnetic Energy Harvester

2014 ◽  
Vol 903 ◽  
pp. 332-337
Author(s):  
Wan Hasbullah Mohd Isa ◽  
Ismayuzri Ishak
Keyword(s):  
Magnetic Flux ◽  
Permanent Magnet ◽  
Output Power ◽  
Energy Harvester ◽  
Copper Wire ◽  
Rate Of Change ◽  
Geometrical Parameters ◽  
Induced Voltage ◽  
Flux Linkage ◽  
The Given

This paper presents the analysis on geometrical parameters of the power-optimized coil based on Faradays principle by maximizing the coverage of magnetic flux linkage by the coil using a cylindrical permanent magnet of 6 mm diameter and 6 mm height. Faradays law states that induced voltage is the rate of change of flux linkage, meaning more winding induces more voltage. However it will increase also the resistance of the coil because the length of copper wire will also increase, which will reduce the generated power and power-density by the harvester according to Joules and Ohms laws. Simulation is used to virtually wind the inner and outer geometrical parameters of the coil using the given boundaries and the dimensions with highest output power are determined. The proposed form of the coil is cap-like shape which covers top half of the magnet where the amount of surrounding magnetic flux linkage is maximal. The result showed the induced power could be improved up to 60% using this method compared to usage of conventional ring-shaped coils.

Analysis of structure factors affecting suspension force of permanent magnet system with variable magnetic flux path control

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1495-1504
Author(s):  
Fangchao Xu ◽  
Yongquan Guo ◽  
Ran Zhou ◽  
Junjie Jin ◽  
Chuan Zhao ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Permanent Magnet ◽  
System Structure ◽  
Magnet System ◽  
Load Torque ◽  
Factors Affecting ◽  
Annular Gap ◽  
Path Control ◽  
Structure Factors ◽  
Flux Path

To solve the problem of reduction of suspension force of permanent magnet system with variable magnetic flux path control, according to the structure of the system, suspension principle of the permanent magnet system with variable magnetic flux path control and the generation principle of the load torque, the influence of the mechanical structure of the system on the suspension force is analyzed by changing part of parameters of the system structure. The results show that the existence of magnetic isolation plate is the main reason for the decrease of suspension force, the permanent magnet ring can be thickened to 11.91 mm, the annular gap can be reduced to 1 mm, thickness of the “F” shaped magnetizer can be increased to 9 mm to increase the suspension force.

High-Speed Permanent-Magnet Generator with Controlled Magnetic Flux for Aerospace Application

2019 ◽  
Vol 12 (6) ◽  
pp. 290 ◽  
Author(s):  
Viacheslav Vavilov ◽  
Luca Papini ◽  
Flyur Ismagilov ◽  
Shoujun Song ◽  
Valentina Ayguzina
Keyword(s):  
Magnetic Flux ◽  
Permanent Magnet ◽  
High Speed ◽  
Aerospace Application ◽  
Permanent Magnet Generator

Optimal Stator Design to Improve the Output Voltage of the Novel Three-Phase Doubly Salient Permanent Magnet Generator

2020 ◽  
Vol 8 (4) ◽  
pp. 118
Author(s):  
Vannakone Lounthavong ◽  
Warat Sriwannarat ◽  
Pattasad Seangwong ◽  
Apirat Siritaratiwat ◽  
Pirat Khunkitti
Keyword(s):  
Permanent Magnet ◽  
Output Voltage ◽  
The Novel ◽  
Three Phase ◽  
Doubly Salient ◽  
Stator Design ◽  
Permanent Magnet Generator

Basic Statements of Research and Magnetic Field of Axial Excitation Inductor Generator

2011 ◽  
Vol 28 (1) ◽  
pp. 49-52
Author(s):  
Igors Stroganovs ◽  
Andrejs Zviedris
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Magnetic Flux ◽  
Magnetic System ◽  
System Optimization ◽  
Magnetic Saturation ◽  
The Finite Element Method ◽  
Flux Linkage ◽  
Axial Excitation

Basic Statements of Research and Magnetic Field of Axial Excitation Inductor GeneratorIn this work the main features of axial excitation inductor generators are described. Mathematical simulation of a magnetic field is realized by using the finite element method. The objective of this work is to elucidate how single elements shape, geometric dimensions and magnetic saturation of magnetic system affect the main characteristics of the field (magnetic induction, magnetic flux linkage). The main directions of a magnetic system optimization are specified.

scholarly journals Design of a New 1D Halbach Magnet Array with Good Sinusoidal Magnetic Field by Analyzing the Curved Surface

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2522
Author(s):  
Guangdou Liu ◽  
Shiqin Hou ◽  
Xingping Xu ◽  
Wensheng Xiao
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Permanent Magnet ◽  
Flux Density ◽  
Permanent Magnets ◽  
Air Gap ◽  
Curved Surface ◽  
Magnetic Flux Density ◽  
Sinusoidal Magnetic Field ◽  
The Magnetic Field

In the linear and planar motors, the 1D Halbach magnet array is extensively used. The sinusoidal property of the magnetic field deteriorates by analyzing the magnetic field at a small air gap. Therefore, a new 1D Halbach magnet array is proposed, in which the permanent magnet with a curved surface is applied. Based on the superposition of principle and Fourier series, the magnetic flux density distribution is derived. The optimized curved surface is obtained and fitted by a polynomial. The sinusoidal magnetic field is verified by comparing it with the magnetic flux density of the finite element model. Through the analysis of different dimensions of the permanent magnet array, the optimization result has good applicability. The force ripple can be significantly reduced by the new magnet array. The effect on the mass and air gap is investigated compared with a conventional magnet array with rectangular permanent magnets. In conclusion, the new magnet array design has the scalability to be extended to various sizes of motor and is especially suitable for small air gap applications.

Modeling and Design of Permanent Magnet Vibration-to-Electrical Power Generator’s Induction Coil

2012 ◽  
Vol 588-589 ◽  
pp. 614-617
Author(s):  
Zhi Hua Wang ◽  
Mei Ling Li ◽  
Jian Zhang ◽  
Li Wang ◽  
Yong Xu
Keyword(s):  
Permanent Magnet ◽  
Electrical Power ◽  
Induction Coil ◽  
Test Results ◽  
Coil Design ◽  
Sinusoidal Vibration ◽  
Electrical Generator ◽  
Simulation Results ◽  
Peak Value

The Equivalent Turn Number of Coil (ETNC) is proposed for induction coil design. Simulation results show that the vibrationonthe induction coil’s structure. The optimized coil is composed by two symmetry parts on the condition of sinusoidal vibration. The effective value of output EMF of optimized coil increases 51.39% than uniform coil’s. In the experiment, the optimized and uniform coils are fabricated with 600 turns and comparatively studied in the same vibration-to-electrical generator. The test results show that the peak-to-peak value and effective value of output EMF of the optimized coil can increase up to 52.59% and 48.76%, respectively, compared with the uniform coil.

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