Bearingless 300-W PMSM for Bioreactor Mixing

Reichert, Thomas; Nußbaumer, Thomas; Kolar, Johann W.

doi:10.1109/tie.2011.2126532

Cited by 109 publications

(20 citation statements)

References 30 publications

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“…Centrifugal blood pumps using a radial type self-bearing motor were previously developed for use as an implantable artificial heart . Since the radial type self-bearing motor (Murakami, et al, 2014, Onuma, et al, 2015, Onuma, et al, 2012, Reichert, et al, 2012and Silber and Amrhein, 1998) is able to generate a magnetic suspension force and a torque by one stator, it is suitable for miniaturization of the device. In the radial type self-bearing motor, the radial position and rotation of the rotor-impeller are actively controlled.…”

Section: Introductionmentioning

confidence: 99%

Development of a small magnetic levitated centrifugal blood pump using a radial type self-bearing motor and axial position change of rotor-impeller by rotational magnetic field

Onuma

Masuzawa

Murakami

2017

Mechanical Engineering Journal

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A small magnetic levitated centrifugal blood pump using a radial type self-bearing motor has been developed for use as an implantable artificial heart. In order to realize an implantable blood pump for a small adult patient, miniaturization and high efficiency of the device are necessary. In this study, a radial type self-bearing motor which is small-diameter and thin was developed, and the axial position change of the rotor-impeller by the rotational magnetic field was proposed. Magnetic suspension characteristics and motor performance were compared the center axial position of the rotor with the displaced axial position of the rotor. Additionally, a magnetic levitated centrifugal blood pump using the self-bearing motor was developed, and pump performance and levitation performance were measured. The magnetic suspension performance in the radial direction was enough ability to control the radial position of the rotor. The magnetic suspension force in the radial direction decreased by displacing the axial position of the rotor. The passive stability performance in the axial direction was enough ability to suspend the rotor. The restoring force was possible to be varied by the rotation magnetic field. The motor performance decreased by shifting the phase angle of the rotational magnetic field from 90 degrees and displacing the axial position of the rotor. At the operating condition with a flow rate of 5 L/min against a pressure of 100 mm Hg, the oscillation amplitude in x, y, z direction were 0.014 mm, 0.014 mm and 0.039 mm, respectively. And, the total power consumption was 7.1 W. The developed magnetic levitated centrifugal blood pump has demonstrated sufficient levitation performance and low total power consumption. The average displacement in z direction of the rotor-impeller was possible to change by changing the phase angle of the rotational magnetic field. By decreasing the phase angle from 90 degrees in range of from 60 degrees to 90 degrees, it is possible to improve the levitation performance with just a little increases the total power consumption.

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Section: Introductionmentioning

confidence: 99%

Development of a small magnetic levitated centrifugal blood pump using a radial type self-bearing motor and axial position change of rotor-impeller by rotational magnetic field

Onuma

Masuzawa

Murakami

2017

Mechanical Engineering Journal

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“…To overcome the above problem, the single winding bearingless permanent magnet synchronous motor (SBPMSM) whose torque winding current and the suspension force winding current are integrated into a single winding are increasingly being reported in international conference proceedings [4,5]. This is mainly due to the stator model: the two needed magnetic fields are generated by feeding two groups of currents into the single set of windings, where the one can produce unbalanced forces for rotor suspension and another one generates the torque needed to control the rotation of the rotor.…”

Section: Introductionmentioning

confidence: 99%

A Novel Single Winding Structure and Closed Loop Control of the Suspension Force Vector of Bearingless Permanent Magnet Synchronous Motors

Zhu¹,

Yuan²,

Jv³

2016

Energies

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At present, because of their advantages of simple structure, low cost, low power consumption and high efficiency, single winding bearingless permanent magnet synchronous motors (SBPMSMs) have become one of the research hotspots in the bearingless technology field. However, a high motional-electromotive force (EMF) is generated by rotor rotation in the single winding, which already has side-effects on the normal suspension force current, and the suspension force response can be delayed. Because the method of double torque current inverse injection in the symmetrical winding allows the motional-EMFs of the corresponding phase windings to offset each other in the opposite direction, with no adverse effects on original performance, a T-shaped single winding configuration is proposed to realize precisely that effect. In this paper, the analytical expressions of the radial suspension force and torque are deduced and the motional-EMF and performance are analyzed by finite element method using the Ansys-Maxwell software. In addition, a suspension force vector closed loop control strategy is proposed to improve the suspension performance. The complete control strategy of torque and suspension force is designed based on the above motor winding configuration. Finite element analysis (FEA) is used to verify the T-shaped winding structure. The control strategy is demonstrated by software (MATLAB) simulation and an experimental prototype. These results show that the winding structure and the control strategy can achieve the desired effect, improving the radial suspension force.

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“…Various types of bearingless motors have been successfully applied to multiple areas, such as flywheel energy storage systems, semiconductor, pumps and mixers in medical industry, etc [1][2][3][4]. It is benefited from its advantages as like noncontact bearing capability and no mechanical friction and lubricants.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Half-coiled Short-pitch Windings with Different Phase Belt for Multiphase Bearingless Motor

Li¹,

Huang²,

Kong³

et al. 2014

Journal of Electrical Engineering and Technology

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-The analysis and comparation of the half-coiled short-pitch windings with different phase belt are presented in the paper. The half-coiled short-pitch windings can supply the odd and even harmonics simultaneously, which can be applied in multiphase bearingless motor (MBLM). The space harmonic distribution of the half-coiled short-pitch windings with two kinds of phase belt is studied wi th respect to different coil pitch, and the suitable coil pitch can be selected from the analysis results to reduce the additional radial force and torque pulse. The two kinds of half-coiled short-pitch windings are applied to the five-and six-phase bearingless motor, and the comparation from the Finite Element Method (FEM) results shows that the winding with 2π/m phase belt is fit for the five phase bearingless motor and the winding with π/m phase belt is suitable for the six phase bearingless motor. Finally, a five phase surface-mounted permanent magnet (PM) bearingless motor is built and the experimental results are presented to verify the validity and feasibility of the analysis. The results presented in this paper will give useful guidelines for design optimization of the MBLM.

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Bearingless 300-W PMSM for Bioreactor Mixing

Cited by 109 publications

References 30 publications

Development of a small magnetic levitated centrifugal blood pump using a radial type self-bearing motor and axial position change of rotor-impeller by rotational magnetic field

Development of a small magnetic levitated centrifugal blood pump using a radial type self-bearing motor and axial position change of rotor-impeller by rotational magnetic field

A Novel Single Winding Structure and Closed Loop Control of the Suspension Force Vector of Bearingless Permanent Magnet Synchronous Motors

Analysis of Half-coiled Short-pitch Windings with Different Phase Belt for Multiphase Bearingless Motor

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