Design and FEM analysis of five-phase permanent magnet generators for gearless small-scale wind turbines

Andruşcă, Mihai; Benelghali, Seifeddine; Simion, Alecsandru; Outbib, Rachid; Livadaru, Leonard

doi:10.1109/icelmach.2012.6349856

Cited by 7 publications

(6 citation statements)

References 10 publications

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“…In electrical machine design, there are two basic design concepts as output coefficient (machine constant) [10,12,18,24] and rotor tangential stress [12]. The rotor dimensions can be identified by using appropriate tangential stress on rotor surface.…”

Section: General Considerations For Pmsgmentioning

confidence: 99%

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Transient analysis with coupled field-circuit model and experimental assessment of a PMSG used in small-scale wind turbine for water heating purpose

et al. 2019

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This paper introduces the detailed coupled field-circuit analysis including performance characteristics of a 4-kW in-running rotor permanent magnet synchronous generator (PMSG) used in rural-type small-scale wind turbines for water heating purpose. The content of the work consists of design, analysis, optimization, production and testing processes and validation studies. An integrated 2D electromagnetic field and circuit model are used in the design and analysis processes. The electrical machine design involves complex and time-consuming processes. This model provides comprehensive information on machine behavior under different conditions and is an effective to demonstrate compliance with real load conditions prior to the manufacture. The goal of the optimization process is to find a design that offers cost, manufacturability and efficiency as well as generator output values. For this, a multiobjective optimization approach has been used. Typical design and simulation principles are applied to the designed PMSG, respectively, including calculation and evaluation of various output parameters for different simulated wind speed rates and varying load conditions. Furthermore, the analytical studies related to finite element methods and parametric approaches are presented in collaboration with experimental studies carried out for different load rates.

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Section: General Considerations For Pmsgmentioning

confidence: 99%

“…There are important and independent parameters in the design of electrical machines. In the case that an optimal solution is intended in the design, the solution becomes extremely complex unless some of these independent parameters are properly constrained [18]. Many of these independent parameters rarely change.…”

Section: Introductionmentioning

confidence: 99%

Transient analysis with coupled field-circuit model and experimental assessment of a PMSG used in small-scale wind turbine for water heating purpose

et al. 2019

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“…The average electrical torque for each condition was assumed to be the same as the average mechanical torque according to Section II-C. The EMFs of the generator were determined using equation (4). The harmonics were determined from FFT of rotation synchronized measurements of the generator voltage at no-load.…”

Section: Methods a Simulationsmentioning

confidence: 99%

“…By designing the boost converter on the dc-link as a current source, the ripple is decreased according to [3]. Other solutions involve multiphase machines, such as five phases [4], six phases [5] or dual three phase windings, one Y-connected and one ∆-connected [6]. More examples of different passive and active rectifiers are given in [7].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Torque Ripple From a Passive Diode Rectifier in a 12 kW Vertical Axis Wind Turbine

Rossander

Goude

Eriksson

2017

IEEE Trans. Energy Convers.

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PostprintThis is the accepted version of a paper published in IEEE transactions on energy conversion. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Rossander, M., Goude, A., Eriksson, S. (2017) Mechanical torque ripple from a passive diode rectifier in a 12 kW vertical axis wind turbine. Abstract-The influence of passive rectification on the mechanical torque of a permanent magnet generator for a directly driven vertical axis wind turbine has been studied. Passive diode rectification introduce electromagnetic torque ripple from the generator. The conversion of electromagnetic torque ripple into mechanical torque ripple and rotational speed ripple has been modelled, analytically evaluated and simulated. The simulations have been compared to measurements on an open site 12 kW prototype. A parameter study with the model illustrates the impact of shaft torsional spring constant, generator rotor inertia, generator inductance and dc-link capacitance. The results show that the shaft and generator rotor can be an effective filter of electromagnetic torque ripple from diode rectification. The measured mechanical torque ripple amplitude on the prototype is less than ±0.9% of nominal turbine torque. The measurements compare well with the simulations.

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“…The advantages of PMSG can be summarized as more efficient, no power supply is needed for magnetic field excitation, improved thermal properties due PM use for excitation instead of windings, more reliable due to the absence of mechanical components such as brushes and rings, lighter and therefore having higher power density (kVA/kg). However, PMSGs have some disadvantages that can be summarized as follows: limited technology for application in the higher power range (MW), high PM material cost, production difficulties, low material reliability in harsh atmospheric conditions, high temperature PM demagnetization [6][7][8]. However, it could be mentioned that recently PMSGs have been applied more widely for large-scale wind turbine systems, with improved performance and reduced cost of PM materials [9].…”

Section: Introductionmentioning

confidence: 99%

The electromagnetic modeling and the co-simulation of a direct drive axial flux permanent magnet synchronous generator

Akın

Balci

2020

Journal of Energy Systems

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Direct drive (gearless) axial flux permanent magnet synchronous generators (AFPMSG) are designed as multi-pole for use in vertical axis wind turbines. In particular, there are multi-pole core/coreless stator structures with axial flux for use in vertical axis wind turbines (WT) that can be designed in a compact structure at low wind speeds. In this study, the parametric simulation studies have been carried out according to rotor mechanical speeds with certain linear steps depending on different wind speed scenarios for an AFPMSG designed with 16-pole and cored stator for 5 kVA rated power with the finite element analysis (FEA) software. According to the analysis results obtained, the performance of the generator is reported and current, voltage, power losses and the flux distribution are investigated. In addition, the DC link voltage at the output of the DC-DC boost converter circuit due to wind speed changes is adaptively controlled for AFPMSG, which is co-simulated with the power electronics interface used at the generator output. Thus, both power electronics circuit performance and generator side have been simulated simultaneously with electromagnetic modeling. Therefore, the performance of the designed AFPMSG, which is modeled in three dimensions (3D) before the prototype stage, can be determined under more realistic conditions.

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Design and FEM analysis of five-phase permanent magnet generators for gearless small-scale wind turbines

Cited by 7 publications

References 10 publications

Transient analysis with coupled field-circuit model and experimental assessment of a PMSG used in small-scale wind turbine for water heating purpose

Transient analysis with coupled field-circuit model and experimental assessment of a PMSG used in small-scale wind turbine for water heating purpose

Mechanical Torque Ripple From a Passive Diode Rectifier in a 12 kW Vertical Axis Wind Turbine

The electromagnetic modeling and the co-simulation of a direct drive axial flux permanent magnet synchronous generator

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