Design Aspects of Bearingless Slice Motors

Silber, Siegfried; Amrhein, Wolfgang; Bosch, P.P.J. van den; Schöb, Reto; Barletta, N.

doi:10.1109/tmech.2005.859813

Cited by 100 publications

(31 citation statements)

References 2 publications

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“…In a double-winding structure of stator slot in BIM, torque winding (p 1 -pair pole, ω 1 electrical angular frequency) and radial suspension force winding (p 2 -pair pole, ω 2 electrical angular frequency) are compound intertwined. The controllable suspension force is generated in the motor, satisfied by p 1 = p 2 ± 1 and ω 1 = ω 2 [5,6].…”

Section: The Structure and The Basic Working Principle Of Producing Rmentioning

confidence: 99%

Study on Radial Suspension Force of Single Winding Bearingless Induction Motor Based on Two-Fundamental Wave Method

Yang¹,

Ren²,

Sun³

et al. 2016

PIER M

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Abstract-The radial suspension force with a new structure of a bearingless induction motor based on single winding is researched. Compared to the conventional double-winding structure of bearingless induction motor, torque and suspension forces are produced with a single-winding system. Bearingless induction motor is a nonlinear, multi-variable and strong coupling system. It is difficult to obtain an accurate mathematical model on the radial suspension force. So the research method about radial suspension force of a single-winding bearingless induction motor is proposed, based on two fundamentals. Firstly, a new structure and operation principle of a single-winding bearingless induction motor is introduced. Then the air gap flux density distribution of the single-winding bearingless induction motor is analyzed in detail. The accurate mathematical model of radial suspension force is deduced by using two-fundamental wave method and Maxwell's stress tensor method. Secondly, according to the transient analysis of the single-winding bearingless induction motor in which its speed is 6000 r/min by finite element method (FEM), the component of radial suspension force in x-axis and y-axis is obtained by FEM simulation analysis. The calculation results used by FEM and the theoretical calculation results of mathematical model used by two-fundamental wave method have been compared. Thirdly, an experimental prototype is produced, and suspension experiment of prototype is carried out. Then measured result of radial suspension force is analyzed. The analysis results show that the prototype has excellent suspension characteristics, and the mathematical model of radial suspension force based on two-fundamental wave method has low error and high precision.

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Section: The Structure and The Basic Working Principle Of Producing Rmentioning

confidence: 99%

Study on Radial Suspension Force of Single Winding Bearingless Induction Motor Based on Two-Fundamental Wave Method

Yang¹,

Ren²,

Sun³

et al. 2016

PIER M

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“…Nowadays, the research effort to refine this technology is focused on several aspects, such as actuator configuration [4][5][6], sensing technology [7][8][9], the interaction with rotordynamic aspects [10,11], and the integration of an electric motor with magnetic bearings [12,13]. The control strategy is typically based on linear or nonlinear control architectures like PID, H∞, µ-synthesis, sliding mode control, LQ, and learning control [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Offset-Free Model Predictive Control for Active Magnetic Bearing Systems

Bonfitto¹,

Molina²,

Tonoli³

et al. 2018

Actuators

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This paper presents the study of linear Offset-Free Model Predictive Control (OF-MPC) for an Active Magnetic Bearing (AMB) application. The method exploits the advantages of classical MPC in terms of stability and control performance and, at the same time, overcomes the effects of the plant-model mismatch on reference tracking. The proposed approach is based on a disturbance observer with an augmented plant model including an input disturbance estimation. Besides the abovementioned advantages, this architecture allows a real-time estimation of low-frequency disturbance, such as slow load variations. This property can be of great interest for a variety of AMB systems, particularly where the knowledge of the external load is important to regulate the behavior of the controlled plant. To this end, the paper describes the modeling and design of the OF-MPC architecture and its experimental validation for a one degree of freedom AMB system. The effectiveness of the method is demonstrated in terms of the reference tracking performance, cancellation of plant-model mismatch effects, and low-frequency disturbance estimation.

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“…Various bearingless motors have been developed in recent years [1][2][3]. In bearingless motors, both the torque and suspension force can be generated in the same unit.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy self-adaptive PID control for the suspending subsystem of bearingless permanent magnet-type synchronous motors

Meng

Zhang

2014

2014 9th IEEE Conference on Industrial Electronics and Applications

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Practical operation of a bearingless permanent magnet-type synchronous motor (BPMSM) owes to stable suspension of the rotor. With the variation of operating conditions, conventional PID controller can't adjust its parameters, and the overshoot of the system response is big. Based on rotor flux orientation, a fuzzy self-adaptive PID controller was designed to control the suspending subsystem of a BPMSM. This controller can adjust the PID parameters on-line by fuzzy reasoning. The characteristics of dynamic tracking performance and steady-state precision of PID controller, together with strong robustness, good dynamic response and less overshoot of fuzzy controller are obtained. The simulation results show that this approach is effective in improving the static and dynamic performance of stable suspension of bearingless motors.

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Design Aspects of Bearingless Slice Motors

Cited by 100 publications

References 2 publications

Study on Radial Suspension Force of Single Winding Bearingless Induction Motor Based on Two-Fundamental Wave Method

Study on Radial Suspension Force of Single Winding Bearingless Induction Motor Based on Two-Fundamental Wave Method

Offset-Free Model Predictive Control for Active Magnetic Bearing Systems

Fuzzy self-adaptive PID control for the suspending subsystem of bearingless permanent magnet-type synchronous motors

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