Design and Analysis of Axial Flux Permanent Magnet Synchronous Machine

Jo, Won-Young; Lee, Injae; Cho, Yun‐Hyun; Koo, Dae‐Hyun; Chun, Yon‐Do

doi:10.5370/jeet.2007.2.1.061

Cited by 16 publications

(5 citation statements)

References 4 publications

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“…The change in the mean magnetic flux density caused by slot openings corresponds to a fictitious increase in the air gap [4]. It assumes that the flux density in air gap B g is regular in the axis-direction [7]. The relation between fictitious g' and physical air gap g is expressed with the aid of Carter coefficient k C > 1, i.e.,…”

Section: Methodsmentioning

confidence: 99%

“…The specific permeance between the heads of teeth is (7) should be added to the differential specific permeance of slotted stator windings.…”

Section: Methodsmentioning

confidence: 99%

“…The larger the air gap, the higher the current is that passes through the load, but the lower the efficiency and power factor. Figures 6,7,and 8 show the efficiency, armature current, and power factor with respect to the air gap for the AFWR synchronous generator.…”

Section: Figure 6 Efficiency With Respect To the Air Gapmentioning

confidence: 99%

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Determining the Air Gap Length of an Axial Flux Wound Rotor Synchronous Generator

Multi

Garniwa

Sudibyo

2013

MST

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The air gap length of the designed axial flux wound rotor (AFWR) synchronous generator is determined properly according to the design parameters. One of the distinct advantages of an axial flux (AF) machine is its adjustable air gap. An AF generator's performance might be controlled by adjusting its air gap. The designed generator has a smallscale capacity that has 1 kW, 380 V, and 50 Hz. The windings are laid into slots made from laminated core. The slots are carved in the face of the stator and rotors. The generator has a single-double-sided slotted wound stator sandwiched between twin rotors. The effect of air gap changes on its performance can be seen from the calculation results using the given equations. The results reveal electric quantities suited to the machine's effective performance. The smaller the air gap, the greater the efficiency and power factor and the smaller the armature current and voltage. The efficiency and armature current for 0.1 cm air gap are 85.30 % and 1.815 A, respectively. Abstrak Penentuan Lebar Celah Udara Generator Sinkron Fluks Aksial Rotor Belitan. Lebar celah udara generator sinkron fluks aksial rotor belitan (AFWR) perlu ditentukan dengan tepat sesuai dengan parameter desain. Salah satu kelebihan dari mesin fluks aksial (AF) adalah celah udaranya yang dapat diatur. Kinerja generator AF dapat diatur dengan mengatur celah udaranya. Generator yang dirancang merupakan mesin berkapasitas skala kecil yang memiliki 1 kW, 380 V, dan 50 Hz. Belitan-belitannya diletakkan didalam alur yang terbuat dari inti besi laminasi. Alur-alurnya terletak pada permukaan stator dan rotor. Generator tersebut memiliki satu stator belitan beralur dua sisi yang terletak diantara dua rotor. Pengaruh perubahan celah udara terhadap kinerjanya dapat dilihat dari hasil perhitungan dengan menggunakan persamaan-persamaan tertentu. Hasilnya menunjukkan besaran listrik yang sesuai dengan kinerja efektif mesin. Semakin kecil celah udara, semakin besar efisiensi dan faktor daya sedangkan arus armatur dan tegangannya semakin kecil. Efisiensi dan arus armatur pada celah udara 0,1 cm masing-masing adalah 85,30% dan 1,815 A

show abstract

Section: Methodsmentioning

confidence: 99%

“…The specific permeance between the heads of teeth is (7) should be added to the differential specific permeance of slotted stator windings.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Determining the Air Gap Length of an Axial Flux Wound Rotor Synchronous Generator

Multi

Garniwa

Sudibyo

2013

MST

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“…본 설계에서 파도의 각운동 주파수  는 심 해파도 데이터의 중앙값에 해당하는 5rad/s로 하고, 파고는 보 퍼트 풍력 계급 5의 중앙값에 가까운 2m로 하였다. 발전기는 파도나 풍력과 같이 그 세기가 균일하지 않아서 구 동 토크가 일정하게 유지되기 어려운 경우에는 영구자석식 가 변속 동기발전기나 동기전동기가 유리하다 (18,19) . 본 설계에서 는 정격 출력 용량 5kW, 주파수 60Hz이고 8극의 정격 회전수 …”

Section: 피니언 및 변속기어의 제원(unclassified

Dynamic Design of a Mass-Spring Type Translational Wave Energy Converter

Choi

Lee²,

Hong³

2012

Journal of manufacturing engineering & technology

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This study suggests a dynamic design process for deciding properly design parameters of a mass-spring type Wave Energy Converter (WEC) to achieve sufficient energy conversion from wave to power generator. The WEC mechanism, in this research, consists of a rigid sprung body, a platform, suspension springs and dampers. The rigid sprung body is supported on the platform via springs and dampers and vibrates translationally in the heave direction under wave excitation. At last the resulting heave motion of the sprung body is transmitted to rotating motion of the electric generator by rack and pinion, and transmission gears. For the purpose of vibration analysis, the WEC mechanism has been simply modelled as a mass-spring-damper system under harmonic base excitation. Its maximum displacement transmissibility and steady state response can be determined by using elementary vibration theory if the harmonic ocean wave data were provided. With the vibration analysis results, the suggested dynamic design process of WEC can determine all the design parameters of the WEC mechanism, such as sprung body mass, suspension spring constant, and damping coefficient that can give sufficient relative displacement transmissibility and the associated inertia moment to drive the electric generator and transmission gears.

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“…Nowadays, the PM machine utilizing NdFeB magnet is popular due to its high efficiency, high power density, and simple structure [1,2]. On one hand, according to the manufacturing process, the NdFeB magnet can be classified into sintered and bonded types.…”

Section: Introductionmentioning

confidence: 99%

Residual Magnetic Flux Density Distribution Calculation Considering Effect of Aligning Field for Anisotropic Bonded NdFeB Magnets

Han¹,

Ren²,

Koh³

2016

Journal of Electrical Engineering and Technology

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-This paper presents a calculation method of residual magnetic flux density distribution for a four-pole anisotropic bonded NdFeB permanent magnet (PM) considering the effect of aligning magnetic field during the forming process. To manufacture the anisotropic bonded NdFeB magnet, the magnet powder needs to be aligned with a proper aligning field before magnetizing. Therefore, it is necessary to analyze the magnetizing process based on the aligning field analysis to determine accurate distribution of residual magnetic flux density (B r ) for the anisotropic bonded NdFeB PM. In order to estimate the B r distribution of the anisotropic bonded NdFeB magnet, an analysis method by combining the external electric circuit equation coupled with the transient finite element method and the scalar Jiles-Atherton hysteresis model is proposed.

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Design and Analysis of Axial Flux Permanent Magnet Synchronous Machine

Cited by 16 publications

References 4 publications

Determining the Air Gap Length of an Axial Flux Wound Rotor Synchronous Generator

Determining the Air Gap Length of an Axial Flux Wound Rotor Synchronous Generator

Dynamic Design of a Mass-Spring Type Translational Wave Energy Converter

Residual Magnetic Flux Density Distribution Calculation Considering Effect of Aligning Field for Anisotropic Bonded NdFeB Magnets

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