Optimization of Low-Speed Dual Rotor Axial Flux Generator Design Through Electromagnetic Modelling and Simulation

2021 ◽  
pp. 786-801
Author(s):  
P. Premaratne ◽  
M. Q. Abdullah ◽  
I. J. Kadhim ◽  
B. Halloran ◽  
P. J. Vial
Keyword(s):  
Modelling And Simulation ◽  
Axial Flux ◽  
Low Speed ◽  
Electromagnetic Modelling ◽  
Generator Design

scholarly journals MODELING OF AXIAL FLUX INDUCTION MACHINE WITH SINUSOIDAL WINDING DISTRIBUTION

2014 ◽  
pp. 1-6
Author(s):  
V.RAMESH BABU ◽  
M.P. SONI
Keyword(s):  
Induction Machine ◽  
Axial Flux ◽  
Low Speed ◽  
System Equations ◽  
Lumped Parameters

Axial Flux Machines are favorable option for Low speed applications because of the flexibility to have higher pole number. In this paper, an overview of axial flux machine is given in the first part. In the second part, the lumped parameters are determined for the axial flux induction machine which has sinusoidal winding distribution. And a model is developed based on the system equations derived in the environment of MATLAB.

scholarly journals Axial-Flux Permanent-Magnet Dual-Rotor Generator for a Counter-Rotating Wind Turbine

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2833
Author(s):  
Filip Kutt ◽  
Krzysztof Blecharz ◽  
Dariusz Karkosiński
Keyword(s):  
Wind Turbine ◽  
System Development ◽  
Analytical Calculation ◽  
Fem Simulation ◽  
Simple Construction ◽  
Axial Flux ◽  
Prototype Development ◽  
Novel Approach ◽  
Turbine Design ◽  
Generator Design

Coaxial counter-rotating propellers have been widely applied in ships and helicopters for improving the propulsion efficiency and offsetting system reactive torques. Lately, the counter-rotating concept has been introduced into the wind turbine design. Distributed wind power generation systems often require a novel approach in generator design. In this paper, prototype development of axial-flux generator with a counter-rotating field and armature is presented. The design process was composed of three main steps: analytical calculation, FEM simulation and prototype experimental measurements. The key aspect in the prototype development was the mechanical construction of two rotating components of the generator. Sturdy construction was achieved using two points of contact between both rotors via the placement of the bearing between the inner and outer rotor. The experimental analysis of the prototype generator has been conducted in the laboratory at the dynamometer test stand equipped with a torque sensor. The general premise for the development of such a machine was an investigation into the possibility of developing a dual rotor wind turbine. The proposed solution had to meet certain criteria such as relatively simple construction of the generator and the direct coupling between the generator and the wind turbines. The simple construction and the lack of any gearbox would allow for such a system to be constructed relatively cheaply, which is a key aspect in further system development.

Quasi 3D modelling and simulation of axial flux machines

2014 ◽  
Vol 33 (4) ◽  
pp. 1220-1232 ◽  
Author(s):  
Ossi Niemimäki ◽  
Stefan Kurz
Keyword(s):  
Eddy Currents ◽  
Simulation Models ◽  
Coupled System ◽  
3D Modelling ◽  
Modelling And Simulation ◽  
Future Research ◽  
Axial Flux ◽  
Content Type ◽  
2D Simulation ◽  
Magnetostatic Problem

Purpose – The purpose of this paper is to investigate the theoretical foundation of the so-called quasi 3D modelling method of axial flux machines, and the means for the simulation of the resulting models. Design/methodology/approach – Starting from the first principles, a 3D magnetostatic problem is geometrically decomposed into a coupled system of 2D problems. Genuine 2D problems are derived by decoupling the system. The construction of the 2D simulation models is discussed, and their applicability is evaluated by comparing a finite element implementation to an existing industry-used model. Findings – The quasi 3D method relies on the assumption of vanishing radial magnetic flux. The validity of this assumption is reflected in a residual gained from the 3D coupled system. Moreover, under a modification of the metric of the 2D models, an axial flux machine can be presented as a family of radial flux machines. Research limitations/implications – The evaluation and interpretation of the residual has not been carried out. Furthermore, the inclusion of eddy currents has not been detailed in the present study. Originality/value – A summary of existing modelling and simulation methods of axial flux machines is provided. As a novel result, proper mathematical context for the quasi 3D method is given and the underlying assumptions are laid out. The implementation of the 2D models is approached from a general angle, strengthening the foundation for future research.

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