VDI Verlag eLibrary

LAND.TECHNIK 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2395 2022

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S. Prufling, B. Langer Latest technology solutions for Charging and e-Machines – how off-road and agriculture applications can benefit from automotive innovations S. 365-380

„… pressures by up to 7 bar. By adding this gap pipe between the stator and rotor the air gap is increased by …” „… Fig. 5: Illustration of Direct Stator Oil Cooling (DOSC) On the one hand, the increased air gap leads …” „… in Fig.6. Fig. 6: Design influences and trade-off between air gap and performance VDI-Berichte …”

doi.org/10.51202/9783181023952

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Dritev – Drivetrain For Vehicles 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2354 2019

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M. Kruse, H. Decker, Sebastian Eulert Optimisation of electric motor acoustics of a hybrid dual clutch gearbox using virtual methods S. II-111-II-124

„… features a method for simulating the excitation of the electric motor in the form of dynamic air gap …” „… amplitudes of the air gap forces over the speed and the torque of the electric motor. The method of …” „… minimisation of the forces from air gap excitation on a virtual basis. The effect of less excitation of the …”

M. Stulrajter, M. Pacha Challenges of sensorless high-speed drives with PM motors S. II-29-II-44

„… between these two motors is in the shape of magnetic field distribution inside the motor air gap. This …” „… brushes reverse the current polarity in rotor winding such way that stator field created by PMs and rotor …”

doi.org/10.51202/9783181023549

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Dritev – Drivetrain For Vehicles 2018

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2328 2018

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M. Werra, A. Ringleb, C. Sieg, F. Küçükay Thermal behavior of 48 V hybrid systems S. I-529-II-VI

„… air gap and heat conduction of the shaft where the EM sits on. First, the air gap with its extremely …” „… the rotor unit. This fact compensate the lower heat transfer from the rotor unit to the air gap and …” „… indirectly and the rotor unit is cooled by the air gap and heat conduction which is not effective. This …”

D. Bauer, M. Alexander Loss-optimized design of a high performance electrical machine for electric and hybrid cars S. II-183-II-196

„… the air gap. This behaviour is independent of the used winding technique (round or rectangular wires …” „… clearly seen that the maximum temperature rises and the hot spot moves towards the air gap …” „… resulting component temperatures is investigated. For example, the additional winding losses due to current …”

doi.org/10.51202/9783181023280

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Model-based diagnosis of electronic cooling fan drive systems

Michael Pagel

Series: Mess-, Steuerungs- und Regelungstechnik

Volume 1262 2018

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Fault Detection and Diagnosis of the electrical motor: Online Parameter Acquisition S. 40-98

„… observer structure, that takes the winding and ambient air temperature as an input to derive the current …” „… heat transfer in the air-gap. Both papers assume a model discretization suitable for machine simulation …” „… not account for forced convection in the air-gap, which render them unsuitable for thermal modeling of …”

Bibliography S. 127-137

„… Electronics Magazine, vol. 8, no. 2, pp. 31 42. Howey, D., P. Childs, and A. Holmes (2012). Air-Gap …” „… . Habetler (2003). An online stator winding resistance estimation technique for temperature monitoring of …” „… Conversion, vol. 20, no. 3, pp. 620 628. Stiebler,M. and Y. Plotkin (2005). Online winding temperature …”

doi.org/10.51202/9783186262080

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Methodische Konstruktion elektrischer Radnabenmotoren für Fahrzeuge

Andreas Zörnig

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 814 2021

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Titelei/Inhaltsverzeichnis S. I-XVIII

„… Keywords: wheel hub motor – wheel hub drive – single wheel drive – direct drive – air gap winding …” „… influenced by a slotless air gap winding in radial flux arrangement. In the conceptual design phase the main …” „… the air gap. The lower the electrical air gap, the higher is the torque. The change of the air gap …”

Literaturverzeichnis S. 165-188

„… novel slotless permanent magnet DC-Motor with air gap winding design. IEEE/ASME International …” „… ; Vittayaphadung, Nitipan ; Kasper, Roland : Deformation and Modes of a Wheel Hub Motor with Air Gap Winding. 11 …” „… Machines by Combining Two Different Winding Types. In: Proceedings of the 7th IFAC Symposium on …”

doi.org/10.51202/9783186814128

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Drivetrain for Vehicles 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2276 2016

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J. Winchester, A. Favale, S. A. Martin Lightweight, Highly Efficient Drive System S. 667-680

„… . The mechanical air gap inside a radial flux motor is a factor that drives the way in which the motor …” „… housing and shaft without increasing the manufacturing complexity or cost. Fig. 7 identifies the air gap …” „… within a radial flux motor. Fig. 7: Mechanical Air Gap VDI-Berichte 2276, 2016 673 5 Applications …”

doi.org/10.51202/9783181022764

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Dritev 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2420 2023

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J. Jung, A. Helm Manufacturing technologies for reduced AC copper losses in hairpin stators – Increasing the efficiency of electric traction machines S. 131-142

„… the otherwise usual flux density values in the air gap between rotor and stator. Despite its low …” „… main drive of automobiles contain windings made of solid copper conductors, so-called hairpins. Due to …” „… system, motivated by the calculation results. The proposed hairpin winding combines the reduced eddy …”

A. Kappes, S. Frei, P. Noone, Stephan Rinderknecht Development and Design of a Range Extended four-speed Two-Drive-Powertrain S. 253-280

„… current ripple due to the inductance of the motor windings. The current ripple in turn results in …” „… , while ohmic losses (e.g. in high-voltage wiring, motor windings, battery cells or semiconductor bulk …” „… stator design, adjusted motor windings will feature twice as many turns while the wire cross-section is …”

doi.org/10.51202/9783181024201

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Geräusch- und Schwingungsreduktion bei permanentmagneterregten Synchronmaschinen durch neuartige Blechschnitte

Marc Vincent Patrick England

Series: Berichte aus dem IAL

Volume 03/2024 2024

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Literaturverzeichnis S. 183-193

„… .: Analytical Mo-deling of Armature Reaction Air-Gap Flux Density Considering the Non-HomogeneouslySaturated …” „… , Z. Q. ; CHAN, C. C.: Analytical Modeling of Open-CircuitAir-Gap Field Distributions in Multisegment …” „… . ; FRANKE, J.: Manufac-turing Influences on the Motor Performance of Traction Drives with Hairpin Winding.In …”

doi.org/10.51202/9783959009270

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DRITEV – Drivetrain for Vehicles 2021

VDI-Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2381 2021

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C. Schmidt, H. Dhejne, J. Karlsson High Efficient 2 speed e-Axle – Highly efficient and shiftable under load S. 145-158

„… closed slots. This design saves an additional tube in the air gap and thus avoids an increased air gap …” „… with the optimal efficiency area of the machine. The winding layout is distributed round wires, which …” „… has been preferred to hairpin winding. Thin wires are used to prevent skin effect even at the maximum …”

R. R. Kasibhatla, P. Neidhardt, K. Caliskan Thermal Simulation according to Maturity Level in E-Drive Development S. 61-76

„… the active electromagnetic components like stator windings, magnets, stator- and rotor sheet packets …” „… contact gap realized (Patankar, 1980). Based on the adapted mathematical model in a CFD simulation …” „… from power electronics, copper windings, magnets, laminations stacks, gearbox, bearings and sealings …”

doi.org/10.51202/9783181023815

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Dritev – Drivetrain for Vehicles 2020

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2373 2020

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S. Rothe, B. Schröder, G. Lührs Coupled topology optimization of an electric drive S. II-75-II-88

„… to the proximity to the air gap. With the help of the optimization the torque ripple can be reduced …” „… permanent magnet electrical machine. The main goal is the identification of highly efficient magnet-iron-air …” „… materials - iron, magnet and air. The coupling of these three materials in the topology optimization can be …”

P. Schwanemann, T. Pfund Market-driven electric motor designs from Schaeffler – Optimized electric motor design process via technology and production kits S. II-1-II-16

„… and finally to the shaft. This issue is more relevant for the P1 E-Machine, as the air gap flux of …” „… winding technologies, etc.). Since these different designs have a direct influence on the required …” „… name just one out of many examples at Schaeffler: Wave winding (radially inserted bar wound continuous …”

P. Lück, K. Bennewitz, J. Tousen, J. Peter The front-axle drive of the MEB – Volkswagen expands the e-drive portfolio S. I-7-I-26

„… dissipated from the rotor to the water jacket via the air gap to the stator. The coolant is conveyed in a …” „… resolver for determining the rotor speed, the temperature sensor system for determining the winding …” „… . Operating principle of the PM synchronous machine The current in the stator's three-phase copper windings …”

P. Tenberge, A. Alnahlaui E-drive and hybrid-drive with 2 high-speed E-motors and a 2-speed gearbox S. I-233-I-252

„… torques decrease. With the same transferable tangential force in the air gap per air gap surface, these …” „… easier than an internal combustion engine which needs a lot of fresh air for the burning process. An …” „… windings or in another grooves. The end windings are also cooled. And, furthermore, the rotor can …”

doi.org/10.51202/9783181023730

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41. Internationales Wiener Motorensymposium 22.-24. April 2020

Bernhard Geringer (ed.), Hans-Peter Lenz (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 813 2020

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T. Hamatani, T. Uehara, K. Akimoto, T. Hayashi, H. Kitadani, T. Aoki, K. Yamanaka, Y. Nishikawa, T. Okochi, M. Kanehara Neuentwicklung des Hybridsystems für die Kompaktklasse/New Development of Hybrid System for Compact Car S. II-1-II-15

„… Deceleration Linear Feeling On the current model, the gap between acceleration feeling and engine …” „… lubrication structure to THS. The generator adopts a high copper space factor concentrated winding versus the …” „… current distribution winding, and has less copper loss when generating. The motor adopts high copper …”

doi.org/10.51202/9783186813121

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38. Internationales Wiener Motorensymposium 27.-28. April 2017

Hans Peter Lenz (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 802 2017

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P. Ramminger, R. Matthé, M. Herrmann, R. Jäger Das elektrische Antriebssystem im neuen Opel Ampera-e/The Electric Propulsion System in the New Opel Ampera-e S. II-1-II-13

„… oil, adding a baffle to further isolate gears from oil and keeping oil out of the motor air gap …” „… requirements of the drive system. Figure 7: Critical Efficiency Operating Points for Motor Design Winding …” „… winding AC effects that increase motor joule losses at higher motor speeds. In order to lower the winding …”

doi.org/10.51202/9783186802125

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39. Internationales Wiener Motorensymposium 26.-27. April 2018

Bernhard Geringer (ed.), Hanz-Peter Lenz (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 807 2018

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C. Hilton ProteanDRIVE®: ein digitales Antriebssystem in den Rädern/ProteanDRIVE®: a Digital Propulsion System in the Wheels S. 512-524

„… option becomes more practical due to the low motor speed and maximizes the radius of the air-gap which …” „… air-gap is protected during cornering the bearing is required to maintain a specified stiffness which is …” „… outer rotor permanent magnet machine with concentrated windings to minimize machine axial length, the …”

doi.org/10.51202/9783186807120

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International Conference on Gears 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2389 2022

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S. Vonderschmidt, A. Ott, A. Vonderschmidt High speed machining with magnetically geared driven tools on rotatory milling machines S. 1415-1428

„… application greatly increases the air gap and thus significantly reduces the transmittable torque, in the case …” „… by driven tools, e.g. via compressed air or high-speed planetary gearboxes. Beside their advantages …” „… conventional gears or the dependence of the speed on the torque of compressed air spindles. For this reason …”

doi.org/10.51202/9783181023891

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Konstruktion

Browse Volumes: Konstruktion

Konstruktion Volume 67 (2015) Issue 06 ISSN Online: 0720-5953

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A. Zörnig, R. Kasper Konstruktion elektrischer Radnabenmotoren mit Luftspaltwicklung für Kraftfahrzeuge S. 40-43

„… ] Zörnig A.; Vittayaphadung N.; Kasper R.: Deformation and Modes of a Wheel Hub Motor with Air Gap …” „… Winding, 11. Magdeburger Maschinenbau- Tage, 2013 Literatur Geht es um elektrische Antriebskonzepte für …”

doi.org/10.37544/0720-5953-2015-06

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