A Novel Hybrid Hysteresis Motor With Combined Radial and Axial Flux Rotors

Nasiri‐Zarandi, Reza; Mirsalim, Mojtaba; Tenconi, Alberto

doi:10.1109/tie.2015.2498142

Cited by 27 publications

(18 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the values of R h and X h are changing with through Eqs. (8) and (9). To supply hysteresis motor in variable-speed applications, power frequency inverter is used.…”

Section: Simulation Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A novel time varying dynamic modeling for hysteresis motor

Niasar

2017

Scientia Iranica

View full text Add to dashboard Cite

Abstract. Hysteresis motors are used in special applications such as gyroscope and gas centrifuge due to their unique features such as synchronism, self-starting, and developing smooth torque. Dynamic modeling of hysteresis motors is essential to the prediction of the transient performance, the study of the dynamic stability, the development of modern closed-loop control, and the estimation strategies. This paper develops a new time varying dynamic model for a high-speed, circumferential-ux type hysteresis motor, in which the parameters of equivalent circuit of rotor's material are adjusted based on operational B H loop. For this purpose and based on the elliptical assumption about B H loops, the hysteresis lag angle, , is updated due to the applied stator voltage and available load torque. Developed mathematical model satis es many theoretical aspects of hysteresis motor behavior in transient and steady-state situations. The model o ers a tool to study the start-up of hysteresis motor, the change of stator voltage, the variation of load torque, the frequency tracking of variable-speed applications, and transient-state response to design parameters. Some simulations are provided to demonstrate the validity of developed model in Matlab/Simulink and are veri ed by some experimental results. The proposed results verify the advantages of this model over previous research works.

show abstract

“…Moreover, the values of R h and X h are changing with through Eqs. (8) and (9). To supply hysteresis motor in variable-speed applications, power frequency inverter is used.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Disk type hysteresis motors have a thin disk as rotor and the air gap ux is axial [5][6][7]. Cylindrical hysteresis motors are classied into two types of circumferential-ux and radialux [8]. In circumferential-ux hysteresis motor, the rotor ring is mounted on non-magnetic material as support.…”

Section: Introductionmentioning

confidence: 99%

A novel time varying dynamic modeling for hysteresis motor

Niasar

2017

Scientia Iranica

View full text Add to dashboard Cite

show abstract

“…The test rig consists of two aluminum plates connected through four compliant beams (element 9 in Figure 1b). The lower plate (10) is fixed on a seismic mass (1) and supports a mobile stage (3) moved along two orthogonal directions by means of a micro-metric planar positioning stage (2). The journal (6), which cannot spin, is mounted on the mobile stage to have the manual control on the air gap length.…”

Section: Methodsmentioning

confidence: 99%

“…This principle is narrowed nowadays to very few motor applications due to the limited power density with respect to other electric machine solutions. However, at high speed, the simple structure and rotordynamic features of hysteresis motors allow unmatchable power density [1,2]. The magnetic behavior of SHMMs can also be used to achieve levitating forces, leading to magnetic bearing applications.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Validation of the Radial Force Capability of Bearingless Hysteresis Drives

et al. 2018

View full text Add to dashboard Cite

The hysteresis motor technology combined with the magnetic suspension makes bearingless hysteresis drives very appealing for high-and ultra-high-speed applications. Such systems exploit the magnetic behavior of the rotor material to achieve mechanical torque, but the hysteresis can significantly influence the magnetic suspension performance. The literature so far has focused mainly on the motor investigation. On the bearing side, the design and the performance assessment have been carried out by neglecting the hysteresis phenomenon of the rotor material. In those cases, the hysteresis of the rotor material is negligible and hence it slightly affects the force generation. In a wider perspective, this paper intends to investigate the force capability of electromagnetic actuators based on materials of large magnetic hysteresis behavior. To this purpose, the proposed numerical model, based on the finite element method, accounts for the magnetic hysteresis. The experimental results confirm the validity of the modeling approach, thus providing a useful tool for the design as well as the investigation of such systems.

show abstract

“…This configuration features Such material presents large mechanical strength allowing large peripheral speed and, consequently, high energetic performance of the FESS. Its magnetic features can be used to achieve suspension forces and, furthermore, the significant magnetic hysteresis that it exhibits can be exploited to yield mechanical torque [29,30]. This enables the use of the self-bearing hysteresis drives which offer the proposed layout low mechanical complexity, reduced material and manufacturing costs along with a lower component count.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Shaftless Semi-Hard Magnetic Material Flywheel on Radial Hysteresis Self-Bearing Drives

et al. 2018

View full text Add to dashboard Cite

Flywheel Energy Storage Systems are interesting solutions for energy storage, featuring advantageous characteristics when compared to other technologies. This has motivated research effort focusing mainly on cost aspects, system reliability and energy density improvement. In this context, a novel shaftless outer-rotor layout is proposed. It features a semi-hard magnetic FeCrCo 48/5 rotor coupled with two bearingless hysteresis drives. The novelty lies in the use of the semi-hard magnetic material, lending the proposed layout advantageous features thanks to its elevated mechanical strength and magnetic properties that enable the use of bearingless hysteresis drives. The paper presents a study of the proposed layout and an assessment of its energetic features. It also focuses on the modeling of the radial magnetic suspension, where the electromagnets providing the levitating forces are modeled through a one-dimensional approach. The Jiles-Atherton model is used to describe the magnetic hysteresis of the rotor material. The proposed flywheel features a mass of 61.2 kg, a storage capability of 600 Wh at the maximum speed of 18,000 rpm and achieves an energy density of 9.8 Wh/kg. The performance of the magnetic suspension is demonstrated to be satisfactory and the influence of the hysteresis of the rotor material is highlighted.Actuators 2018, 7, 87 2 of 22 lower component count and more compact layout than common solutions with separate electric motor and bearing system.FESSs provide various advantages compared to other energy storage technologies, including high power rating, long lifetime, fast recharging, short response time and high power density. These devices require little periodic maintenance, have a very low environmental impact, their charge/discharge cycles do not degrade storage capacity, and their state of charge is easily obtained by measuring the rotational speed [17]. The use of self-bearing drives in flywheel applications lends the system more compactness, higher reliability, lower component count and mass saving, thus strengthening the FESS advantages [18][19][20][21]. On the other hand, one of the main drawbacks of FESSs is the low energy density when compared to other storage technologies [1]. This aspect has motivated a research effort devoted to investigating higher energy density layouts. One solution is represented by flywheels made of composite materials, which achieve higher energy density compared to high-strength steel flywheels thanks to their light-weight, along with the very large mechanical strength permitting very high rotational speeds. A rim made of composite material can be much lighter than a steel flywheel when storing a comparable amount of energy. In this configuration, the rotor is usually in the shape of a hollow cylinder made of composite material such as carbon fiber reinforced plastic.Since the energy density depends directly on the mass of the whole FESS, it can be improved by designing as much mass of the system to contribute to storing energy. The index allowing quantif...

show abstract

A Novel Hybrid Hysteresis Motor With Combined Radial and Axial Flux Rotors

Cited by 27 publications

References 25 publications

A novel time varying dynamic modeling for hysteresis motor

A novel time varying dynamic modeling for hysteresis motor

Modeling and Validation of the Radial Force Capability of Bearingless Hysteresis Drives

Analysis of a Shaftless Semi-Hard Magnetic Material Flywheel on Radial Hysteresis Self-Bearing Drives

Contact Info

Product

Resources

About