Stiffness analysis of a magnetically suspended bearingless motor with permanent magnet passive positioning

Asami, Koki; Chibá, Akira; Hoshino, Tetsuya; Nakajima, Atsushi

doi:10.1109/intmag.2005.1463757

Cited by 6 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The authors have proposed a new hybrid bearingless motor with the two-axis active positioning and passive magnetic bearings (PMBs) [23]- [25]. A prototype machine was constructed by two-axis active position regulation having one unit of a bearingless motor with a consequent-pole permanent magnet (PM) rotor [23], [24]. With the PMBs, the stiffness is enhanced in the three passive movements, i.e., axial and conical movements, thus, the rotor aspect ratio can be low.…”

Section: Introductionmentioning

confidence: 99%

Effects of Permanent-Magnet Passive Magnetic Bearing on a Two-Axis Actively Regulated Low-Speed Bearingless Motor

Asama

Asami

Imakawa

et al. 2011

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

Performance comparisons in a bearingless motor with and without passive magnetic bearings are presented. The bearingless motor is actively controlled in two perpendicular x-y axes. The axial and conical movements are supported by passive magnetic bearings. The experimental results are compared to the calculated ones by three-dimensional finite element method. Effectiveness of passive magnetic bearings is analytically and experimentally investigated in both static and dynamic tests. It is found that a rotational test is successful only with the passive magnetic bearings.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of Permanent-Magnet Passive Magnetic Bearing on a Two-Axis Actively Regulated Low-Speed Bearingless Motor

Asama

Asami

Imakawa

et al. 2011

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

show abstract

“…In bearingless motors [6]- [8] and magnetic bearings [9]- [10] the magnetic gaps are generally designed to be relatively narrow. A wide magnetic gap causes a decrease in magnetic suspension force because of an increase in reluctance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a Bearingless PM Motor With Wide Magnetic Gaps

Asama

Amada

Tanabe

et al. 2010

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

A new non-contact drive system has been developed employing a consequent-pole type bearingless permanent magnet (PM) motor and a thrust magnetic bearing. This bearingless motor has a wide magnetic gap. The wide magnetic gap may cause a decrease in radial magnetic suspension force because of an increase in magnetic reluctance. A thrust magnetic bearing is installed at the end of the shaft, because strong thrust force exists in centrifugal pump applications. In this paper, the magnetic suspension forces and rotation characteristics of the experimental prototype are evaluated, while the rotor is magnetically suspended. Experimental results are also compared to the calculated ones using the finite element method. It is demonstrated that the developed consequent-pole type bearingless PM motor possesses sufficient magnetic suspension force for non-contact operation.

show abstract

“…Electrical machines with two or more windings in the stator have been designed for different purposes, such start up winding, maintain the voltage level at different speeds [7], reduce the amount of harmonics [8], magnetically suspended bearingless systems [9], etc. There are different solutions to start up electrical motors.…”

Section: Introductionmentioning

confidence: 99%

Dual Voltage Driveline for Vehicle Applications

Santiago¹,

Larsson²,

Bernhoff³

2010

International Journal of Emerging Electric Power Systems

View full text Add to dashboard Cite

This paper presents a novel driveline where the load and the energy source are operated at different voltage levels and they are galvanically insulated. The element that couples both part of the driveline is a Two Voltage Level Machine (TVLM). The machine is formed of a self-excited rotor and a stator with two sets of electrically isolated windings for adjustable speed drive applications. Both sets of these three phase windings are independently operated at different voltages. The equivalent circuit of the TVLM is deduced and phasor diagrams are presented. A complete driveline is simulated and the performance of the complete system is discussed. The driveline is applicable in flywheel energy storage systems for vehicles and power conditioning in renewable energy production.

show abstract

Stiffness analysis of a magnetically suspended bearingless motor with permanent magnet passive positioning

Cited by 6 publications

References 0 publications

Effects of Permanent-Magnet Passive Magnetic Bearing on a Two-Axis Actively Regulated Low-Speed Bearingless Motor

Effects of Permanent-Magnet Passive Magnetic Bearing on a Two-Axis Actively Regulated Low-Speed Bearingless Motor

Evaluation of a Bearingless PM Motor With Wide Magnetic Gaps

Dual Voltage Driveline for Vehicle Applications

Contact Info

Product

Resources

About