Forces in Axial Flux Magnetic Gears with Integer and Fractional Gear Ratios

Kołodziej, J.; Kowol, M.; Mynarek, Piotr; Gabor, Rafał; Łukaniszyn, M.

doi:10.3390/en14040855

Cited by 4 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Magnetic gears offer many advantages over their mechanical counterparts. Thanks to contactless torque transmission, magnetic gears allow us to eliminate the teeth wear problem, as well as reducing vibrations and noise, resulting in a decrease in maintenance costs and an increase in durability [19][20][21]. Natural protection against overload due to a lack of physical contact between movable elements is another very important advantage of MGs.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Two-Stage Magnetic Precession Gear Dynamics

Macyszyn,

Jedryczka,

Mysinski

2023

Energies

View full text Add to dashboard Cite

The aim of this study was to carry out the investigation and analysis of two-stage magnetic precession gear dynamics and the determination of the resonance frequencies, which can be a cause of the powertrain system failures. Graphical interpretation of the two-stage precession gear is presented, and two equations of the dynamics of the movable elements of the presented gearbox were determined. On the basis of these equations, the stiffness coefficients and resonance frequencies of the presented gearbox were mathematically derived. The next step was to develop a numerical model of the magnetic precession gear dynamics in the environment of MATLAB Simulink. The elaborated model allowed us to analyze the influence of varying the input speed and the load torque on the operation of the magnetic precession gear. The performed analyses of the dynamics of the magnetic precession gear showed the occurrence of a resonance phenomenon under the influence of load torque ripples with a frequency close to the natural frequency of the studied system.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of a Two-Stage Magnetic Precession Gear Dynamics

Macyszyn,

Jedryczka,

Mysinski

2023

Energies

View full text Add to dashboard Cite

show abstract

“…Recent technological improvements and operational measures have been directed toward the design and topology optimization of magnetic gears in order to maximize the transmitted torque and power, as well as to reduce permanent magnets' usage [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Magnetic field distributions determine the operational characteristics of MGs, such as the magnetic torque densities, losses, cogging and ripple torque, and efficiency [23].…”

Section: Introductionmentioning

confidence: 99%

“…Parametrizing the existing designs of CMGs, the current CCMG designs are situated between radial-field and axial-field CMGs (Figure 1). According to [23,24], radial-field CMGs (Figure 1a) are suitable for higher rotational speeds, while axial-field CMGs (Figure 1c) are suitable for higher torques in low-velocity operating conditions. The CCMG design (Figure 1b) acts as a bridge, combining the benefits of the two border cases with improved magnetic field interaction at mid-range rotational speeds.…”

Section: Introductionmentioning

confidence: 99%

Design Aspects of Conical Coaxial Magnetic Gears

2023

View full text Add to dashboard Cite

In this paper, a new design of a conical coaxial magnetic gear was proposed. Conical magnetic gears are considered a logical link between the radial- and axial-field coaxial designs. The modeling of magnetic torques based on the 3D finite element method was developed. The design parameter variations of the conical coaxial magnetic gear were determined and discussed. The magnetic torque density was calculated and compared with that of a cylindrical coaxial magnetic gear with the same size and materials used. An optimal cone angle based on the air-gap length was proposed. Multistage conical coaxial magnetic gears were proposed as a sequence of coupled rotors with increased torque density and reduced magnetic reluctance. The proposed conical coaxial magnetic gears are more compact in size and suitable for integration with electrical machines and variable transmissions.

show abstract

“…The use of magnetic forces for the transmission of mechanical power instead of physical contact removes at least some of the unwanted features of mechanical gears. Magnetic gears (MGs) provide contactless transmission of torque, which allows reducing vibrations and noise as well as increasing the durability [5][6][7][8], which decreases maintenance cost. Another advantage of the MG is its natural protection against overload [9].…”

Section: Introductionmentioning

confidence: 99%

Simulation and Experimental Investigation of a Two-Stage Magnetic Precession Gear

2021

View full text Add to dashboard Cite

Gears are common and important components of many types of propulsion systems applied in mechanical engineering. The aim of this paper is to present the mechanical design and performance analysis of a novel two-stage magnetic precession gear (MPG). The main advantage of the proposed design is the ability to obtain higher transmission ratios than other currently known magnetic gear types. A detailed analysis of the performance of the MPG was carried out employing a developed numerical model of the magnetic field in the proposed gear. The MPG model is based on the finite element method (FEM) and allows determining the relations between the torque acting on the main components of the gear, load angles, and air-gap lengths. To validate the developed FEM model, the prototype of an MPG with a 1/144 gear ratio was built and tested. The experiments were also focused on determining the mechanical efficiency as well as the influence of rotational speed and lengths of air gaps on the maximum load torque. The tests indicated that the maximum efficiency of the studied MPG is about 30%, which is comparable to the efficiency of mechanical two-stage precession gears with face meshing.

show abstract

Forces in Axial Flux Magnetic Gears with Integer and Fractional Gear Ratios

Cited by 4 publications

References 25 publications

Analysis of a Two-Stage Magnetic Precession Gear Dynamics

Analysis of a Two-Stage Magnetic Precession Gear Dynamics

Design Aspects of Conical Coaxial Magnetic Gears

Simulation and Experimental Investigation of a Two-Stage Magnetic Precession Gear

Contact Info

Product

Resources

About