Design Issues Of A Fractional-Slot Windings Axial Flux PM Machine With Soft Magnetic Compound Stator

Marignetti, Fabrizio; Colli, V. Delli; Stefano, R. Di; Cavagnino, Andrea

doi:10.1109/iecon.2007.4460217

Cited by 24 publications

(16 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermal analysis has emphasized that in AFPMM, and especially in fractional slot machines a large contribution to losses comes from the rotor and is mainly due to the harmonic components of the stator MMF [21][22][23].…”

Section: Eddy Currents Modelmentioning

confidence: 99%

“…The model was validated through comparison to experimental tests on an AFPMM prototype detailed in [23]. The concentrated fractional slot winding allows a large number of pole pairs to be designed even in a small machine.…”

Section: Example: Smc Core Fractional Slot Wound Machinementioning

confidence: 99%

“…The influence of rotor eddy-currents on efficiency of fractional slot AFPMM has been emphasized in [23].…”

mentioning

confidence: 99%

“…Slotting and skewing are taken into account also. Stator core losses are computed as suggested in [23]. Rotor iron losses are finally introduced in the model.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Axial Flux PM Machines including stator and rotor core losses

Marignetti

Stefano

Coia

2008

2008 34th Annual Conference of IEEE Industrial Electronics

Self Cite

View full text Add to dashboard Cite

Accurate analysis of electrical machinery is of the outmost importance in the design process. Many studies have demonstrated that accurately assessing the behavior of Axial Flux PM Machines is not an easy task, even using FEM analysis. The model proposed in the paper takes into account MMF harmonics, skewing, stator and rotor core losses with traditional and fractional winding layouts. The model is experimentally verified with no-load and load tests on a prototype of an Axial Flux Soft Magnetic Composite PM Synchronous Machine.

show abstract

Section: Eddy Currents Modelmentioning

confidence: 99%

Section: Example: Smc Core Fractional Slot Wound Machinementioning

confidence: 99%

See 2 more Smart Citations

Analysis of Axial Flux PM Machines including stator and rotor core losses

Marignetti

Stefano

Coia

2008

2008 34th Annual Conference of IEEE Industrial Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…SPP = 6/19, and a DL winding. Marignetti et al [11] propose a single stator single rotor AFPM machine with 24 slots and 28 poles, i.e. SPP = 2/7, and a SL winding: in this paper, in order to simplify construction, the stator core is made of SMC; furthermore, rotor losses have been found to be high particularly in loaded conditions.…”

Section: Introductionmentioning

confidence: 98%

Fractional-slot concentrated-winding axial-flux permanent magnet machine with core-wound coils

Donato

Capponi

Caricchi

2010

2010 IEEE Energy Conversion Congress and Exposition

View full text Add to dashboard Cite

This paper presents the design, finite element analysis (FEA) and experimental verification of a single stator double rotor fractional-slot concentrated-winding (FSCW) axial-flux permanent magnet (AFPM) machine, with core-wound coils. The advantages that are obtained by adopting such coil construction, in terms of shorter end-winding connections, higher fill factor and mechanical robustness of the magnetic structure are highlighted. Machine performances both at no load and at rated load are analyzed through static FEA and a simple index is introduced, in order to compare induced losses in the permanent magnets for various machine configurations. The construction and experimental testing of a full scale prototype is described, in order to confirm the expected performances and to characterize the prototype in terms of losses, cogging torque and main machine parameters. © 2010 IEEE

show abstract

Impact of speed ripple on the back‐emf waveform of permanent magnet synchronous machines

Kooning

Vyver

Vandoorn

et al. 2013

IET Electric Power Applications

View full text Add to dashboard Cite

Abstract-PermanentMagnet Synchronous Machines (PMSMs) are frequently used in industry due to their high efficiency and favorable dynamic properties. Mechanical limitations and design considerations cause several harmonics in the flux and back-emf of these machines. The back-emf harmonics can be measured on the machine terminals if no stator current is present and the neutral point is accessible. The measured harmonics can then be included in a mathematical model of the machine. This measurement is often done for a constant speed. However, when a speed ripple is present, several new harmonics are introduced in the flux and back-emf. Although the existence of this phenomenon is intuitively clear, ithas not yet been investigated in detail and no method exists to calculate these additional harmonics. Nevertheless, the impact of a speed ripple on the back-emf can become significant in some applications. Therefore, in this paper, a mathematical model is presented which allows to accurately calculate the additional back-emf harmonics in the presence of speed ripples. Also, it provides more insight in the interaction between speed ripples and harmonics. The mathematical model is extensively validated by means of simulations and experiments.Index Terms-Permanent magnet machines, Brushless machines, Speed ripple, Back-emf harmonics, Vibrations, Modeling of electrical machines NOMENCLATURE δ E Rms of actual minus constant-speed back-emf δ Ψ Rms of actual minus constant-speed flux

show abstract

Design Issues Of A Fractional-Slot Windings Axial Flux PM Machine With Soft Magnetic Compound Stator

Cited by 24 publications

References 18 publications

Analysis of Axial Flux PM Machines including stator and rotor core losses

Analysis of Axial Flux PM Machines including stator and rotor core losses

Fractional-slot concentrated-winding axial-flux permanent magnet machine with core-wound coils

Impact of speed ripple on the back‐emf waveform of permanent magnet synchronous machines

Contact Info

Product

Resources

About