scholarly journals Performance comparison of axial-flux switched reluctance machines with non-oriented and grain-oriented electrical steel rotors

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 981-988
Author(s):  
Racha Aydoun ◽  
Guillaume Parent ◽  
Abdelmounaïm Tounzi ◽  
Jean-Philippe Lecointe
Keyword(s):  
Electrical Steel ◽  
Performance Comparison ◽  
Axial Flux ◽  
Switched Reluctance ◽  
Machine Performance ◽  
Rotating Machine ◽  
Reluctance Machine ◽  
Switched Reluctance Machines ◽  
The Impact ◽  
Static Torque

Abstract This paper studies the performance of an axial-flux switched reluctance machine (AFSRM) using GOES (grain-oriented electrical steel) in its rotor and comparing it to a NOES (non-oriented electrical steel) rotor. Indeed, the AFSRM structure lends itself well to the use of GOES, especially at the rotor. In order to evaluate the intrinsic capabilities of the AFSRM, self-inductance versus rotor position and static torque were numerically simulated at a given operating point and used as indicators for the NOES and GOES performance comparison. The static torque is also used to determine and compare the torque per volume ratios and grasp the impact of GOES use in a 3D rotating structure. The introduction of GOES in a rotating machine leads to an improvement of the electromagnetic torque mean and maximum values, allowing to evaluate the GOES impact on the machine performance.

scholarly journals Influence of Manufacturing and Assembly Defects and the Quality of Materials on the Performance of an Axial-Flux Switched Reluctance Machine

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4807 ◽  
Author(s):  
Pere Andrada ◽  
Balduí Blanqué ◽  
Eusebi Martínez ◽  
José Ignacio Perat ◽  
José Antonio Sánchez ◽  
...  
Keyword(s):  
Experimental Results ◽  
Switched Reluctance Machine ◽  
Axial Flux ◽  
Switched Reluctance ◽  
Reluctance Machine ◽  
Electric Scooter ◽  
Exhaustive Study ◽  
The Impact ◽  
Static Torque

This paper investigated the influence of manufacturing and assembly defects and the quality of materials on the performance of an axial-flux switched reluctance machine (AFSRM). An AFSRM drive was designed and built for the in-wheel propulsion of an electric scooter. The motor was tested according to the standard IEC 60349-Part 1, but the obtained results were below the expected result. The causes of the discrepancy between the simulated and experimental results were analyzed. After an exhaustive study, manufacturing and assembly deficiencies and the quality of materials were identified as the main causes of the mentioned discrepancies. Static torque was used to assess the impact of the different causes in these discrepancies. Finally, some recommendations are proposed to improve the construction of this kind of machine.

Comparison of 8/6 radial and axial flux switched reluctance machines

2019 ◽  
Vol 38 (6) ◽  
pp. 1756-1769
Author(s):  
Racha Aydoun ◽  
Guillaume Parent ◽  
Mounaim Tounzi ◽  
Jean-Philippe Lecointe ◽  
Krzysztof Komeza
Keyword(s):  
Numerical Models ◽  
Performance Comparison ◽  
Electromagnetic Torque ◽  
Switched Reluctance Machine ◽  
Axial Flux ◽  
Content Type ◽  
Switched Reluctance ◽  
Active Surfaces ◽  
Reluctance Machine ◽  
The Impact

Purpose This paper aims to deal with a performance comparison of an 8/6 radial-flux switched reluctance machine (RFSRM) and an axial-flux switched reluctance machine (AFSRM), presenting equivalent active surfaces. Design/methodology/approach An axial machine was designed based on the equivalent active surfaces of a radial one. After estimating the machine inductances with a reluctance network, finite elements numerical models have been implemented for a more precise inductance determination and to estimate the electromagnetic torque for both machines. Finally, the AFSRM was thoroughly examined by analyzing the impact of some geometric parameters on its performance. Findings The comparison of the RFSRM and AFSRM at equivalent active surfaces showed that the obtained axial machine is more compact along with an improvement in the electromagnetic torque. Practical implications The equivalent AFSRM is more compact, therefore more interesting for transport and on-board applications. Originality/value The RFSRM and AFSRM performance comparison using the same active surfaces has not been done. Moreover, the AFSRM presented has a rare design with no rotor yoke and where the rotor teeth are encapsulated in a nonmagnetic structure, allowing a more compact design.

scholarly journals Investigating the use of grain-oriented electrical steel in axial-flux switched reluctance machines

2020 ◽  
Vol 63 (4) ◽  
pp. 691-703
Author(s):  
Racha Aydoun ◽  
Guillaume Parent ◽  
Jean-Philippe Lecointe ◽  
Abdelmounaïm Tounzi
Keyword(s):  
Electrical Steel ◽  
Axial Flux ◽  
Switched Reluctance ◽  
Switched Reluctance Machines

scholarly journals Efficiency Improvement of Switched Reluctance Generator Using Optimization Techniques

2017 ◽  
Vol 2 (1) ◽  
pp. 74 ◽  
Author(s):  
Márcio Rodrigues da Cunha Reis ◽  
Wanderson Rainer Hilário De Araújo ◽  
Wesley Pacheco Calixto
Keyword(s):  
Power Converter ◽  
Optimization Techniques ◽  
Electrical Machine ◽  
Efficiency Improvement ◽  
Switched Reluctance Machine ◽  
Switched Reluctance ◽  
Machine Performance ◽  
Reluctance Machine ◽  
Several Variables ◽  
Maximum Value

This article introduces the switched reluctance machine operating as a generator. This kind of electrical machine delivers CC power at the output and the energy generated can be controlled through several variables. In this work, the switching angles of the machine's power converter are optimized using deterministic and heuristic techniques so that the output power is kept constant via PI controller while guaranteeing maximum value for machine performance, even for different excitation values and mechanical power on the shaft.

scholarly journals Design of a Novel Modular Axial-Flux Double Rotor Switched Reluctance Drive

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1161 ◽  
Author(s):  
Pere Andrada ◽  
Balduí Blanqué ◽  
Eusebi Martínez ◽  
José Ignacio Perat ◽  
José Antonio Sánchez ◽  
...  
Keyword(s):  
Design Procedure ◽  
Experimental Measurements ◽  
Axial Flux ◽  
Element Analysis ◽  
Switched Reluctance ◽  
Flux Reversal ◽  
Switched Reluctance Machines ◽  
Output Torque ◽  
Rotor Poles ◽  
New Distribution

Nowadays, there is a renewed interest in switched reluctance machines and especially in axial-flux switched reluctance machines (AFSRM). This paper presents a comprehensive design procedure for modular AFSRM with an inner stator and two exterior rotors that have a new distribution of the stator and rotor poles, resulting in short magnetic paths with no flux reversal. After a description of the proposed machine, the output torque equation is derived from a simplified non-linear energy conversion loop and guidelines for its design are given. Once the preliminary sizing has been carried out the different modules of the AFSRM, the magnetically active parts made with SMC, are reshaped or refined using 3D printing and 3D electromagnetic finite element analysis until they reach their definitive shape and dimensions. Finally, an AFSRM has been built following the proposed design procedure and has been validated by experimental measurements.

Torque Optimization of Double-Stator Switched Reluctance Machine

2013 ◽  
Vol 313-314 ◽  
pp. 45-50 ◽  
Author(s):  
Mohammadali Abbasian ◽  
Vahid Hanaeinejad
Keyword(s):  
Finite Element ◽  
Acoustic Noise ◽  
Optimization Method ◽  
Torque Ripple ◽  
Radial Force ◽  
Switched Reluctance Machine ◽  
Switched Reluctance ◽  
Torque Density ◽  
Reluctance Machine ◽  
Switched Reluctance Machines

Double-stator switched reluctance machines benefit from a high torque density and a low radial force level in comparison with conventional switched reluctance machines resulting in a lower vibration and acoustic noise. Therefore, they are suitable candidate for automotive applications. However, torque pulsation which is also a source for vibration is still remained and should be alleviate by dimension optimization of the machine. This paper presents a design optimization of a double-stator switched reluctance machine for improving the magnetic torque quality of the machine. For this purpose finite element method along with response surface methodology is used to optimize three parameters of the machine to maximize torque quality factor i.e. the average torque to torque ripple ratio in the machine. Genetic algorithm method is also employed as an optimization tool. The aim of optimization is to maximize the ratio of average torque to torque ripple. Finite element results are presented to verify the optimization method.

scholarly journals A Survey of the Modeling of Switched Reluctance Machines and their Applications

2020 ◽  
Vol 6 (1) ◽  
pp. 26-36
Author(s):  
Ana Camila Ferreira Mamede ◽  
José Roberto Camacho ◽  
Rui Esteves Araújo
Keyword(s):  
Single Machine ◽  
Open Problem ◽  
Angular Position ◽  
Mathematical Function ◽  
Nonlinear Relationship ◽  
Switched Reluctance Machine ◽  
Flux Linkage ◽  
Switched Reluctance ◽  
Reluctance Machine ◽  
Switched Reluctance Machines

The main objective of modeling a switched reluctance machine is to derive a mathematical function to relate the outputs to the inputs. Due to the nonlinear relationship between the variables of torque, flux linkage, current and angular position of the rotor, Switched Reluctance Machine (SRM) modeling is a very challenging task and an open problem. Modeling is usually done in two situations, modeling a single machine, or modeling a set of machines. Each one must fulfill different requirements. This work presents a survey of different SRM modeling approaches, evaluating its advantages and limitations when modeling a single machine or a set of machines.

scholarly journals Accurate Magnetic Characterization Based Model Development for Switched Reluctance Machine

2019 ◽  
Vol 63 (3) ◽  
pp. 202-212 ◽  
Author(s):  
Mahmoud Hamouda ◽  
László Számel
Keyword(s):  
High Performance ◽  
Model Development ◽  
Magnetic Characteristics ◽  
Matlab Simulation ◽  
Switched Reluctance ◽  
Reluctance Machine ◽  
Switched Reluctance Machines ◽  
Doubly Salient ◽  
Lcr Meter ◽  
Fidelity Model

High performance control and analysis of switched reluctance machines (SRMs) require accurate modeling of their magnetic characteristics. However, the doubly salient structure and deep magnetic saturation make it very complicated to accurately model SRMs. This paper presents a high fidelity model development for SRMs. The model is developed based on the experimental measurement of flux-linkage and torque characteristics. The introduced measurement noises / errors are investigated carefully. Then several post-processes are achieved to reduce these noises. The measurement accuracy is verified by three methods: finite element method (FEM), search coil comparison, and LCR meter. The measured data are employed after proper rearrangement to build a dynamic MATLAB simulation model for the tested 8/6 machine. The model accuracy and dependability is achieved experimentally.

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