Comparative analysis of salient pole and flux barrier rotor for synchronous reluctance machines including flux weakening range

Hofer, Matthias; Nikowitz, Mario; Schrödl, Manfred

doi:10.1049/joe.2018.8210

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…3. The first type of rotor structure is not commonly preferred due to its quite low saliency ratio and high harmonics [27]. On the other hand, high torque ripple and additional iron loss occur in the ALA-SynRMs [28], [29].…”

Section: B Types Of Synrmmentioning

confidence: 99%

Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Ozdil

Uzun

2021

ELEKTRON ELEKTROTECH

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Substantial increase in energy consumption in all around the world has led to researchers to need to produce electrical machines with high energy efficiency since majority of energy has been consumed at industry, especially by electrical machines. Among electrical machines, the Synchronous Reluctance Machines (SynRMs) have been preferred to investigate in recent years due to lack of Induction Machines (IMs) in terms of efficiency and high price of the Permanent Magnet Synchronous Machines (PMSMs). In this study, the Finite Element Analysis (FEA) showing the effects of phase angle of current, number of flux barriers, starting diameter of flux barriers, and ribs on machine performance of 22 kW Transversally Laminated Anisotropic (TLA)-SynRM with distributed winding have been carried out in ANSYS Electronics. The design is based on creating a novel rotor considering these rotor parameters since the utilized SynRM consists of same stator with same sized 22 kW IM. The performance of the machine has been investigated through torque, torque ripple, efficiency, saliency, and power factor. Moreover, the effect of the phase angle of the current on the machine performance and the comparison of the 22 kW-SynRM with the same sized and powered IM and with a different SynRM have been carried out in this study. This study has concluded that although the novel SynRM has high torque ripple values, it is better than the IM due to lack of copper losses of rotor and the previously utilized SynRM considering their efficiency classes. The efficiency class of novel SynRM is IE4, whereas that for utilized IM and previously created SynRM are IE1 and IE3, respectively.

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Section: B Types Of Synrmmentioning

confidence: 99%

Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Ozdil

Uzun

2021

ELEKTRON ELEKTROTECH

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“…Therefore, when the magnetic bridge is included, the length of one side of the V-type permanent magnet is 19 mm, and a margin of 3 mm is reserved for both ends. So the change range of position y is [3][4][5][6][7][8][9][10][11][12][13][14][15][16] mm, of which the step size is 1 mm. The parameterised variable simulation is established through the permanent magnet decent coordinate system, and the influence of the position change of the magnetic bridge on the motor performance is obtained.…”

Section: Influence Of the Magnetic Bridge Positionmentioning

confidence: 99%

“…When the output power of the motor is fixed, field weakening control is required above the base speed. Therefore, it is of great significance to study the speed regulation ability with field weakening of the PMSM for improving the performance of the main drive system of electric vehicles [10, 11]. The research studies on the performance of speed regulation with field weakening mainly focus on two aspects: the research of motor field weakening method (control) and the optimization design of body structure.…”

Section: Introductionmentioning

confidence: 99%

Analysis and optimization of speed regulation ability with field weakening of the stator hybrid laminated remanufactured motor

Song

Yan

2021

IET Electric Power Appl

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To improve the efficiency, a 13 kW used vehicle permanent magnet synchronous motor was remanufactured, whose stator core was replaced by a combination of amorphous alloy laminations and silicon steel laminations. But the speed regulation ability with field weakening of the remanufactured motor limits its development towards high speed direction. Taking the remanufactured motor as the object, based on the theory of speed regulation with field weakening, the maximum speed range was improved by increasing direct‐axis inductance, and the structural optimization parameters affecting the direct‐axis inductance were analysed. The two‐dimensional inductance superposition method was proposed to calculate the direct‐axis and quadrature‐axis inductance of the remanufactured motor, and its accuracy and feasibility were verified by finite element simulation. The segmented structure of the V‐type permanent magnet was used, and the motor structure was optimised from three aspects: the width and position of magnetic bridge and the magnetic pole implantation depth. The orthogonal experiments were designed to determine the best parameter combination. The results show that the direct‐axis inductance of the optimised remanufactured motor is increased by 16.33%, and the performance of speed regulation with field weakening is improved significantly.

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“…Recently, synchronous reluctance motors (SynRM) have already attracted the attention of various industries application such as pumps [1], electric vehicles [2,3] and elevators [4][5] due to reduced maintenance costs, reduced manufacturing costs and high efficiency. This process has led to research on the optimization of rotor parameters and the selection of rotor types with the aim of improving SynRM performance.…”

Section: Introductionmentioning

confidence: 99%

C & Circular Shaped Barriers Optimization in a Synchronous Reluctance Rotor for Torque Ripples Minimization

2021

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Due to the lack of magnets and the suitable final price, synchronous reluctance motors are potential applicants for household electric appliances and so on. But in general, they suffer from high torque ripple. Optimized design of the synchronous reluctance rotor structure is presented for two different types of barrier shape with aiming to reduce the torque ripple along with increasing the average torque.In this paper, the optimization of rotor geometries with a fixed machine size for C-shaped barriers and circular barriers type is investigated. Most of the rotor parameters such as the width of iron parts, and the width of barriers along d and q axis are optimized by a new method using the PSO algorithm. Besides, the angle of end points for each barrier with constant rib and insulation factor are considered in optimization process. Minimizing the torque ripple without losing or even increasing the average torque is the most critical optimization achievement. Two prototypes of the optimized rotor with the C-shaped and circular barriers type have been fabricated and experimentally compared. The results obtained from the 2-D Finite Element Simulation of the recommended machine conform well to the experimental result.

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Comparative analysis of salient pole and flux barrier rotor for synchronous reluctance machines including flux weakening range

Cited by 5 publications

References 8 publications

Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Analysis and optimization of speed regulation ability with field weakening of the stator hybrid laminated remanufactured motor

C & Circular Shaped Barriers Optimization in a Synchronous Reluctance Rotor for Torque Ripples Minimization

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