Multi-disc axial flux stratospheric aircraft propeller drive

Hill-Cottingham, R.J.; Coles, P.C.; Eastham, J.F.; Profumo, F.; Tenconi, Alberto; Gianolio, G.

doi:10.1109/ias.2001.955753

Cited by 40 publications

(27 citation statements)

References 7 publications

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“…(7) (6) (9) la construcción de muchos otros equipos basados en el funcionamiento de las máquinas de flujo axial, estos abarcan elementos como generadores eólicos, micro-turbinas de alta velocidad, motores de alto desempeño para vehículos eléctricos e incluso en vehículos de exploración extraterrestre [13], [14].…”

Section: Cálculo De La Tensión Inducidaunclassified

Diseño De Un Generador De Flujo Axial Usando El Método De Elementos Finitos

Herrera

Alarcon²,

Trujillo

2013

redes ing.

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Palabras clave: campos electromagnéticos, generador de flujo axial, generadores para turbinas eólicas, método de elementos finitos.Key words: axial flux generator, finite elements method, electromagnetic field, wind turbine generator. RESUMENEste artículo presenta las simulaciones y cálculos realizados para el diseño básico de un generador de flujo axial usando el método de elementos finitos. Durante el proceso de diseño se evalúa el comportamiento electromagnético de los imanes seleccionados, se obtiene la característica B vs. Distancia, así mismo se define la geometría a usar para el montaje de las bobinas y los imanes, calculando el flujo máximo. Posteriormente se analiza la variación del flujo magnético dentro de la bobina en función de la posición angular, se define el número mínimo de espiras a usar por polo y se calcula la tensión inducida en la máquina asumiendo que tiene un sistema de 12 polos. ABSTRACTThis paper shows simulations and calculations forthe basic design of an axial flux generator by using the finite elements method. During the design process the electromagnetic behavior of the selected magnets is evaluated, B vs distance characteristic was obtained, same as coil and magnets geometries by calculation of the maximum magnetic flux value. Afterwards the magnetic flux in the coil was analyzedas a function of angular position, thenthe minimum number of turns coil requiredfor one pole was calculatedand finally the induced voltage was obtained assuming a machine with a 12 poles system.

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Section: Cálculo De La Tensión Inducidaunclassified

Diseño De Un Generador De Flujo Axial Usando El Método De Elementos Finitos

Herrera

Alarcon²,

Trujillo

2013

redes ing.

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“…The efficiency approaches 94.2% at 300 rpm. Because there are no core losses, the efficiency of the coreless machine is higher than that of an iron-core machine normally less than 90% [1,7,8,11]. The fabricated generator is relatively small.…”

Section: Prototyping and Testing Of The Machinementioning

confidence: 99%

“…A plastic multi-disc coreless AFPM motor was proposed to directly drive the propeller of a stratospheric unmanned aircraft because of its high efficiency over a wide power range and impressively low weight [7,8]. Coreless AFPM machines are also contenders for many power generation applications, particularly direct-drive designs, over a wide range of operating speeds.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Analysis of Coreless Axial-Flux Permanent-Magnet Generator for Small Wind Turbines

Chung¹,

You²

2014

Journal of Magnetics

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This paper presents an innovative design for a low-speed, direct-drive, axial-flux permanent-magnet (AFPM) generator with a coreless stator and rotor that is intended for application to small wind turbine power generation systems. The performance of the generator is evaluated and optimized by means of comprehensive 3D electromagnetic finite element analysis. The main focus of this study is to improve the power output and efficiency of wind power generation by investigating the electromagnetic and structural features of a coreless AFPM generator. The design is validated by comparing the performance achieved with a prototype. The results of our comparison demonstrate that the proposed generator has a number of advantages such as a simpler structure, higher efficiency over a wide range of operating speeds, higher energy yield, lighter weight and better power utilization than conventional machines. It would be possible to manufacture low-cost, axial-flux permanent-magnet generators by further developing the proposed design.

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“…In [5] a multi-disc axial flux permanent magnet motor rated 1.25 kW for propulsion of a stratospheric unmanned aircraft has been analyzed. It has been shown that the axial flux design with the airgap concentrated second harmonic windings has a 10 % lower mass than a radial flux machine.…”

Section: Introductionmentioning

confidence: 99%

Optimized Design of a Brushless DC Permanent Magnet Motor for Propulsion of an Ultra Light Aircraft

Jurković¹,

Žarko

2012

Automatika

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Original scientific paperThe paper presents an optimized design of a low mass brushless DC (BLDC) permanent magnet motor for propulsion of an ultra light aircraft. The optimization has been carried out using Differential Evolution algorithm implemented in Matlab combined with SPEED and MotorCAD software packages for electromagnetic and thermal modeling of the BLDC motor using ActiveX technology. The credibility of the models created with SPEED and MotorCAD has been confirmed by comparing the results of simulation and measurement performed on a 12 kW synchronous permanent magnet motor available in the laboratory. The goal of the optimization has been to minimize the weight of the motor under condition that the motor delivers rated power of 15 kW at rated speed of 3000 rpm with hot-spot temperature not exceeding the temperature limits of class F insulation (155 • C). Two optimal BLDC motor designs with slot/pole combinations 12/10 and 18/16 have been obtained. The motor with 18 slots and 16 poles yields the highest torque density with the lowest mass of active parts (copper+laminations+magnets) of only 5.1 kg.Key words: Aircraft, Brushless DC motor, Permanent magnet motor, Optimization, Differential evolution Optimirani projekt elektronički komutiranog motora s trajnim magnetima za pogon ultra lake letjelice. Učlanku je prikazan optimirani projekt elektronički komutiranog motora (EKM) s trajnim magnetima male mase za pogon ultra lake letjelice. Optimizacija je provedena korištenjem algoritma pod nazivom Diferencijalna evolucija koji je primijenjen u Matlabu u kombinaciji s programskim paketima SPEED i MotorCAD za elektromagnetski i termički proračun EKM-a koristeći ActiveX tehnologiju. Vjerodostojnost modela načinjenih u SPEED-u i MotorCAD-u je potvr ena usporedbom rezultata simulacije i mjerenja obavljenih na sinkronom motoru s trajnim magnetima koji je bio na raspolaganju u laboratoriju. Cilj optimizacije je bio minimizirati masu motora pod uvjetom da motor razvija nazivnu snagu 15 kW pri nazivnoj brzini vrtnje 3000 min −1 pričemu temperatura najtoplije točke namota ne smije prijeći granicu odre enu klasom izolacije F (155 • C). Načinjena su dva optimalna projekta EKM-a s kombinacijama broja utora i polova 12/10 i 18/16. Motor s 18 utora i 16 polova postiže najveću gustoću momenta uz najmanju masu aktivnih dijelova (bakar+jezgra+magneti) koja iznosi samo 5,1 kg.

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Multi-disc axial flux stratospheric aircraft propeller drive

Cited by 40 publications

References 7 publications

Diseño De Un Generador De Flujo Axial Usando El Método De Elementos Finitos

Diseño De Un Generador De Flujo Axial Usando El Método De Elementos Finitos

Design and Performance Analysis of Coreless Axial-Flux Permanent-Magnet Generator for Small Wind Turbines

Optimized Design of a Brushless DC Permanent Magnet Motor for Propulsion of an Ultra Light Aircraft

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