Cogging Torque Suppression of Modular Permanent Magnet Machines Using a Semi-Analytical Approach and Artificial Intelligence

Brescia, Elia; Palmieri, Marco; Massenio, Paolo Roberto; Cascella, Giuseppe Leonardo; Cupertino, Francesco

doi:10.1109/access.2023.3267159

Cited by 6 publications

(2 citation statements)

References 40 publications

(82 reference statements)

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“…This torque is associated with the geometric structure of the machine. Thus, cogging torque is affected by structural variables such as magnet geometry, stator slot number and structure and pole number [ 46 , 47 ]. Cogging torque is expressed in terms of rotor position and air gap flux by equation (4.8) in Nm [ 48 ]:…”

Section: Correlation and Comparative Analysismentioning

confidence: 99%

Design and optimization of a high-performance multi-barrier IPMS motor for an electric scooter and bicycle

Gör,

Dalcalı

2024

R. Soc. Open Sci.

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Acknowledging the growing importance of electric vehicles (EVs) in the face of environmental concerns and increasing mobility needs, this study focuses on enhancing the performance of the electric motor, a critical component in EVs. The electric motor of these battery-powered vehicles is expected to have optimal characteristics and efficiency. This paper presents a comprehensive investigation into the design and optimization of a multi-barrier interior permanent magnet synchronous motor tailored for e-scooters and electric bicycles. A multi-barrier rotor structure is proposed and analysed through finite element method simulations to optimize key design parameters. The parametric analysis examines the influence of geometric variables on key motor performance criteria, including efficiency, cogging torque and weight. A correlation analysis of the variables was conducted. A very high positive correlation (0.999) was revealed, especially between the ‘magnet duct dimension parameter’ and efficiency. A very high negative correlation (−1) was found between ‘distance from duct bottom to shaft surface’ and efficiency. The optimized motor design achieves a theoretical improvement of around 7% in efficiency, reaching an overall efficiency of 89.86%. This study highlights the consideration of multiple factors such as efficiency, cogging torque and weight in the design process for the development of sustainable and high-performance EV motor designs.

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Section: Correlation and Comparative Analysismentioning

confidence: 99%

Design and optimization of a high-performance multi-barrier IPMS motor for an electric scooter and bicycle

Gör,

Dalcalı

2024

R. Soc. Open Sci.

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“…The motor speed is changed according to both linear and S-shaped adjustable characteristics. In this case, it is possible to adjust the acceleration time of the engine [1][2][3][4]. After that, a method of switching the connection of the star-triangle windings was used to implement a smooth start of the motor.…”

Section: Introductionmentioning

confidence: 99%

Review and Analysis of Energy-Efficient AC Voltage Regulators

Udovichenko,

Grishanov,

Kosykh

et al. 2023

Preprint

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The formation of the required AC voltage level is currently one of the most important problems. An unstable voltage level can lead to the failure of domestic and industrial equipment, also to the appearance of a lighting equipment flicker effect, which can adversely affect the operating mode. In this regard, the development of AC voltage regulators that perform the function of stabilizers has become relevant. In turn, new topologies should be energy efficient and reliable, this can be achieved by reducing the number of semiconductor elements, which in turn will reduce losses and increase efficiency. In addition to voltage stabilization, AC voltage regulators have found application as soft-start devices for asynchronous motors, and have become competitors to frequency converters. The power level can vary from units to tens of kilowatts where such devices can be used. This paper provides a review of AC voltage regulators, which can be used both as soft starters and AC voltage stabilizers. The analysis of the circuits was carried out and the efficiency was evaluated through their total harmonic distortions (THD), power factor and efficiency coefficient. Experiments were also performed for a number of circuits, where their operating modes were evaluated. Eventually, all circuits were divided into full number of switches with two or more AC switches per phase, with a reduced number of switches, where one AC switch per phase and with low number of switches – with one complementary pair of AC switches for all three phases.

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Effects of magnet shapes on total harmonic distortion and cogging torque in a permanent magnet synchronous generator for wind turbines

Kurt,

Dalcalı

2023

Clean Energy

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This paper explores and theoretically reports the effects of different magnet structures on the cogging torque and the total harmonic distortion of the output waveforms from a permanent magnet generator. The generator is a radial flux machine and four different structures are considered for the magnet arrangement in the rotor component and modelled in the Ansys/Maxwell electromagnetic simulation program. This three-phase machine exhibits different behaviours towards various magnet structures, i.e. rectangular, inclined slotted rectangular, skewed double rectangular and inclined slotted skewed double rectangular, respectively. It has been proven by finite element analysis and Fourier analysis that both the cogging and total harmonic distortion values vary significantly for all models. The cogging torque values change in the range of 89.95 to 436.75 mNm and the lowest cogging torque is measured for the inclined slotted skewed double rectangular magnet geometry, while the conventional rectangular magnet geometry yields the worst value with 436.75 mNm. Furthermore, the total harmonic distortion values varies between 1.63 and 3.55 for different magnetic orientations. While the worst total harmonic distortion value is obtained from the inclined slotted rectangular magnet, the best total harmonic distortion is acquired from the skewed double rectangular magnet. All these results will provide scientists and engineers with important information in order to obtain more efficient machines.

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Cogging Torque Suppression of Modular Permanent Magnet Machines Using a Semi-Analytical Approach and Artificial Intelligence

Cited by 6 publications

References 40 publications

Design and optimization of a high-performance multi-barrier IPMS motor for an electric scooter and bicycle

Design and optimization of a high-performance multi-barrier IPMS motor for an electric scooter and bicycle

Review and Analysis of Energy-Efficient AC Voltage Regulators

Effects of magnet shapes on total harmonic distortion and cogging torque in a permanent magnet synchronous generator for wind turbines

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