Design of hts axial flux motor for aircraft propulsion pdf

Experimental validation of a conduction cooled hts motor. Electromagnetic design of a superconducting electric. Axial flux, modular, permanentmagnet generator with a. Choi1, keith hunker2, jason hartwig3, and gerald v. Magnetless machine, axialflux machine, hybrid excitation machine, dualmode machine, superconducting machine, magnetic gear, faulttolerant control renewable energy systems wind power generation, wave power generation, solar power generation electromechanical propulsion technologies. Study of an axial flux disc motor with superconductor rotor. Magnetic flux distribution in the axial type super motor for currents of 0 and 400 a, where 90 turnssection.

Zarko the results presented in 3 which indicate that the straight tooth design yields lower mass of the motor. In this design, the rotor with composite rim acts as the flywheel of the system and is sandwiched between two disk type stators which are made of amorphous metal to reduce iron losses. Design and development of a highspeed axial flux permanentmagnet machine. Safety torque generation in hts propulsion motor for general aviation aircraft ieee transactions on applied superconductivity. Pdf development of allelectric aircraft would enable more efficient, quieter and environmentally friendly vehicles and would contribute to the. Axial flux induction motor for onwheel drive propulsion.

In most of the new more electric aircraft applications, bldc motor needs to be driven from 300 or 600 vdc bus. In order to evaluate the a loss of superconducting stator windings in a rotational machine environment, we designed and built a novel axial flux high temperature superconducting hts machine platform. Static measurements on hts coils of fully superconducting ac. Selection of the optimum electric motor for space flight operations results in a safe, reliable, effective, efficient and economical electric motor power source for space flight. Development of axial flux hts induction motors sciencedirect. Design of hts axial flux motor for aircraft propulsion ieee transactions on applied superconductivity. Superconducting electric machines are electromechanical systems that rely on the use of one or more superconducting elements. Hts motor design motor designs use hts components wound coils of hts tape. Design of axial and radial flux hts permanent magnet. After the wwii, power systems, and railway engineer ing. Fem analysis is one of the most powerful approaches for precise design and modelling of electrical machines. The most important parameter that is of utmost interest in superconducting machine is the generation of a very high magnetic field that is not possible in a conventional machine.

For the purpose of this study, the nasa n3x aircraft concept is selected as baseline configuration, where the different propulsion designs are tested. This airplane design, as shown in figure 2, calls for a 2. In the following sections the low fidelity models will be discussed in the context of the axial flux air core dual rotor rim drive for x57 design case study. Hts machines for applications in allelectric aircraft.

The axial and radial induction factors satisfy the following. A modular permanentmagnet generator with axial flux direction was chosen. High power density superconducting motor for allelectric aircraft propulsion article pdf available in ieee transactions on applied superconductivity 152. Due to heavy cooling penalty, a losses in the hts stator, is one of the key topics in hts machine design. Bulk high temperature superconducting hts materials, such as ybco pellets, have the capacity of trapping magnetic flux thus behaving as. Us20190009902a1 hypersonic aircraft having homopolar. A homopolar electrical machine receives this energy.

In some implementations, the hts ni coil magnets can have a graded resistance design. As the study focuses on performance assessment of the propulsion system, sizing implication issues and aircraft performance installations effects have not been included in the analysis. Axial flux motor technology ideal topology for hybrid. This paper deals with the design and performance analysis of a new onwheel induction motor drive for an experimental electric vehicle. The mission requirement was to design an electric motor powered, radio controlled aircraft capable of carrying multiple payload configurations for the aiaa designlbuildlfly 20072008 competition. The axial flux motor design for examples, see 14,15, in general, provides higher torquepower density than other motor designs 15, and the use of superconductors is expected to. Modeling and dynamics of hts motors for aircraft electric. Uapt hts machine developmentuapt hts machine development hts motor sizing model system studies electromagnetic model thermal model global optimization power rpm material optimization constraints 20 40 60 80 100 k 250 500 750 1250 1500 best statesweight minimum weight or volume hts motor design general aviationhale roasmall jet all. The proposed propulsion system includes two axial flux induction motors, where the rotating part of each motor is fitted into the wheel rim and the stationary part is mounted on the frame structure of the vehicle.

Design of axial and radial flux hts permanent magnet synchronous motors rotor article in ieee transactions on applied superconductivity 203. Design of hts axial flux motor for aircraft propulsion core. Concept design of a high power superconducting generator for future hybridelectric aircraft mykhaylo filipenko1, lars kuhn1, thomas gleixner1, martin thummet1, marc lessmann1, dirk moller1, matthias bohm1, andreas schroter1. In this paper, the authors present a conceptual design of a 2. Mw electric motor for aircraft propulsion put into operation in january 2015 electric motor performance successfully tested at a continuous mechanical power of 261 kw at 2500 rpm excellent thermal behavior motor can drive propeller directly without gearbox motor was developed for aircraft application. Modeling and dynamics of hts motors for aircraft electric propulsion. Optimized design of a brushless dc permanent magnet motor for. Axial ux pm bldc motor design methodology and comparison with. Since superconductors have no dc resistance, they typically have greater efficiency. Highspeed axial flux permanent magnet micromotors with electroplated windings florian herrault, preston galle, and mark g.

The design examples of hts motordrive aircraft that were. A portable power system has a turbine engine generating mechanical energy. Electrical evaluation and results in geometries of 4, 6, and 8 poles of an ironless stator are. Design and test of an ironless axial flux permanent magnet. Brushless dc motor with axial flux design design world. Us20070085427a1 superconducting homopolar inductor. Optimization of an air core dual halbach array axial flux. Bulk high temperature superconducting hts materials, such as ybco pellets, have the capacity of trapping magnetic flux thus behaving as permanent magnets. Hts propulsion motors, ieee transactions on applied superconductivity, 27 4, 5203005. P j masson panel session pes general meeting 2007, tampa, fl towards electric aircraft propulsiontowards electric aircraft propulsion 1974 1980 1994 2000 halsol gossamer penguin. Jay doernhach cn it cd tech rio log ies co rporu t ion prott cg i. The homopolar electrical machine has a single stationary superconducting field coil configured to create a magnetic field.

The first submarine is scheduled to begin construction in 2021 and enter service in 2031. Concept design of a high power superconducting generator for. Aircraft propulsion systems can benefit from electric hts machines in two distinct ways. The machine requirements and drive constraints power, speed, diameter, available bus voltage are used to size the motor. Fully superconducting machine for electric aircraft. The ironless design concept offers the advantage of zero cogging torque resulting in vibrationfree operation inherent in ironcore designs. The axial flux motor design for examples, see 17,18, in general, provides higher torquepower density than other motor designs 18, and the use of superconductors is expected to improve these advantages even further 16. Design and development of a highspeed axial flux permanentmagnet machine citation for published version apa. Assessment of high temperature superconducting hts. To meet the market demand with an attractive costbenefit ratio, dunkermotoren has developed a new axial flux motor design with stacked windings. Basically, the design of this machine is similar to conventionalelectric motor. Ideally, the design team wants the launch vehicle to create little or no vibrations, however, in reality, engine oscillations and other components of the launch vehicle. Background and issues for congress summary the navy in january 2000 selected electricdrive propulsion technology for use on its planned nextgeneration dd21 landattack destroyer and is considering it for use on other kinds of navy ships as well.

Design of a highforcedensity tubular motor, ieee transactions on. Aircraft propulsion systems can benefit from electric hts machines in. Methodology to assess the performance of an aircraft. Allen school of electrical and computer engineering, georgia institute of technology, atlanta, georgia, usa abstract this paper reports the design and microfabrication of electro. The rotor consists of racetrack coils wound using gdbco wire, which is cooled. Experimental validation of a conduction cooled hts motor jules e.

Assessment of high temperature superconducting hts electric motors for rotorcraft propulsion. Late submissions are no longer accepted except for the extreme circumstance of presenting last minute, groundbreaking research. Large capacity hts motors can be used on warships and merchant vessels for electric propulsion jun, z. A novel hts pm vernier motor for directdrive propulsion. This paper presents the design and optimization of a superconductor induction motor in axial flux configuration, using hts bscco2223 tapes. Brushless direct current motors provide the lightest weight alternative for most applications. Taking advantage of moving within a fluid, aircraft propulsion is achieved by airbreathing engines, i. Welcome to the th biennial european conference on applied superconductivity, eucas 2017, organized under the auspices of esas, the european society for applied superconductivity. 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. Axial flux bldc motors, in general, and ironless axial flux bldc motors, in particular, come with very low inductance owing to this, they need special care to limit the magnitude of ripple current in motor winding. Design of hts axial flux motor for aircraft propulsion. Luongo ca 2005 high power density superconducting motor for allelectric aircraft propulsion. Design and implementation of axial flux induction motor.

Development of a 8 kw hts axial flux machine for electric aircraft. National aeronautics and space administration preliminary. Stator design and performance of superconducting motors. Abstractthe development of cryogenic technology and high temperature superconducting hts materials has seen continued interest worldwide in the development of hts machines since the late 1980s. A slightly different design of a hts motor for cessna 172sp optimized in terms of power density is presented in 7. In some implementations, the hts ni coil magnets can include a series of stacked coils, each of the series of coils comprising multiple turns having turntoturn resistance. A second application is machines which act as both motor and generator integrated with highspeed. For a conventional stator copper windings axial flux superconducting machine, there are two. The version of the design code presented in this paper combines low fidelity motor, fan, and electric aircraft range models to tailor a propulsion system design to a given aircraft. Design of permanent magnet motor basic sizing equations are used to develop an algorithm in matlab that calculates axial ux motor main dimensions under the maximum power density conditions, changing the innertoouter diameter ratio for. Pdf high power density superconducting motor for all.

A high efficiency axial flux brushless dc motor assisted by self axial magnetic bearing and used in flywheel energy storage system is proposed in this paper. The permanent magnet used is ndfeb or ferrite magnet with flux guide to focus flux density in the air gap. Design of hts axial flux motor for aircraft propulsion ieee xplore. A hypersonic aircraft having a homopolar motor with high temperature superconducting hts noninsulated ni coil magnets is described. The axial flux motor design for examples, see 14,15, in general, provides higher torquepower density than other motor designs 15, and the use of superconductors is expected to improve these advantages even further. Dodds, hts electrical system for a distributed propulsion aircraft, ieee trans. Aircraft electrical propulsion iii wednesday, 12 july 2017 1530 hrs. Optimized design of a brushless dc permanent magnet motor. In the paper the design and test of an ironless axial flux permanent magnet motor are presented. Design and development of a highspeed axialflux permanent.

Hts axial flux, 191 hts disc type, 189, 196 hts homopolar, 200 hts induction, 192. Zhou et al an overview of rotating machine systems with hightemperature bulk superconductors in supercond. National aeronautics and space administration preliminary design of the superconducting rotor for nasas highefficiency megawatt motor 2 motivation starcabl reduced energy consumption, emissions, and noise of commercial transport aircraft 1 electrified aircraft propulsion eap enables systemlevel benefits to these metrics. Find materials for this course in the pages linked along the left. First, power can be generated by a conventional gas turbine and converted into electrical energy in an hts generator, which in turn is used to power a controlled hts motor driving a propeller. Axial flux configuration trapped flux magnets ybco small jet. Full text of aircraft propulsion 2ed internet archive.

Luongo, scaling up of hts motor based on trapped flux and flux concentration for large aircraft propulsion. Axial flux motor technology ideal topology for hybrid powertrain integration michael u lamperth, adam c malloy, adrian mlot, mark cordner gkn evo edrive systems ltd, unit 14, woking business park, woking gu21 5jy, u. Experimental data show that one single domain ybco pellets could trap up to 17 t at 29 k, which enables the design of very high power density motors that could be used in aircraft propulsion. A new hts dual stator linear permanent magnet vernier. Recent advances in superconducting rotating machines. Static measurements on hts coils of fully superconducting ac electric machines for aircraft electric propulsion system benjamin b.

Optimized design of a brushless dc permanent magnet motor for propulsion of an ultra light aircraft m. The algorithm contains rfpm motors rated output values, material. In 7, moon et al report the design, fabrication and preliminary tests of a megawattclass 2g hts motor, designed specifically for ship propulsion, at doosan heavy industries and construction. Axial flux motor for aircraft propulsion, ieee transactions on applied superconductivity, vol. Ping umpedac, engineering tower, university of malaya, kuala lumpur, malaysia abstractthe design process of a doublesided slotted torus axial. Design of hts axial flux motor for aircraft propulsion pj masson, m breschi, p tixador, ca luongo ieee transactions on applied superconductivity 17 2, 15331536, 2007. The launch vehicle must also be reliable because the payload is expensive. Pdf design of hts axial flux motor for aircraft propulsion. The rotor design consists of optimizing the airgap length and determining magnet dimensions.

This concept utilizes a distributed propulsion system with six electric fans. Electric drive poses issues for congress concerning its costs, benefits and risks, and how the. A homopolar rotor is configured to rotate within the magnetic field such that a rotating magnetic field is created in a stationary winding by. Although still many years away, electric aircraft may be an attractive. Studies of alternative epp contrarotating arrangements have also been carried out whereby the propeller blades are mounted directly to the rotor casing of a highspeed double rotor, axialflux permanent magnet pm motor 10. Sorry, we are unable to provide the full text but you may find it at the following locations. An axialgap type synchronous rotating machine, composed of a flux rotor. In a typical dc motor, there are permanent magnets on the outside and a spinning armature on the inside.

Next generation moreelectric aircraft superconductivity news. Luongodesign of hts axial flux motor for aircraft propulsion. Electric propulsion components with high power densities for. In order to evaluate the a loss of superconducting stator windings in a rotational machine environment, we designed and built a novel axialflux high temperature superconducting hts machine platform. Detailed designs of these variations can be found in. Review of electric power system of distributed electric propulsion aircraft kong xianghao, zhang zhuoran, lu jiawei, li jincai, yu li centre for moreelectricaircraft power system of ministry of industry and information technology, nanjing university of aeronautics and astronautics, nanjing 210016, china. Design and fem analysis of a high efficiency axialflux. Due to the high rotor speed and high frequency of the stator flux variation, the design of a highspeed machine is quite different from designing a conventional machine with low speed and low frequency 11.

This research will explain about the mechanical, electrical design and implementation of the axial fluxinduction motor that consists of single stator and single rotor. The armature of a typical dc motor the article how electric motors work explains how brushed motors work. Superconducting ac homopolar machines for highspeed. Design and construction in axial magnetic flux configuration are a new alternative to develop hts motors. Promising technologies in propulsion and energy sources are identified leading to pathways to sustainable aviation. In most of the new more electric aircraft applications, bldc motor needs to. The discovery of hightemperature superconductors hts in 1986 provided an. Index terms aircraft, electric propulsion, superconducting motor. In this study, the axial flux machine design is assumed to utilise high temperature superconductors in. For a conventional stator copper windings axialflux superconducting machine, there are two. One typical application powers electric aircraft propulsion fans with energy generated from onboard generators directly coupled to highspeed gas turbines 8. This master thesis deals with the design of an axial.

High power density superconducting rotating machines. In 5 a multidisc axial flux permanent magnet motor rated 1. Design of hts axial flux motor for aircraft propulsion article pdf available in ieee transactions on applied superconductivity 172. Reduce fuel use and emissions of biggest aircraft segment key technologies. Ieee transactions on applied superconductivity, 17 2007, pp. Design of an axial flux machine for an inwheel motor application. Concept design of a high power superconducting generator. Brown4 national aeronautics and space adminstration, glenn research center, cleveland, ohio, 445. Future fuels and energy sources are introduced in a separate chapter. Therefore, this research proposes an axial flux induction motor consists of thinstator and rotor. The goal of the university of tennessee team was to design the aircraft to maximize the highest possible score.