Advanced Control Method for a Single-Winding Bearingless Switched Reluctance Motor to Reduce Torque Ripple and Radial Displacement

Cao, Xin; Zhou, Jingxing; Liu, Congyu; Deng, Zhiquan

doi:10.1109/tec.2017.2719160

Cited by 60 publications

(35 citation statements)

References 27 publications

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“…Compared with the SRMs, the rotation and suspension of the rotor in BSRMs should be controlled simultaneously. Control strategies for the BSRMs with dual-winding and single windings have been investigated by many researchers [2][3][4][5][6][7][8][9][10]. Besides, the BSRMs with novel topologies were also presented [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Multi-Physics Multi-Objective Optimal Design of Bearingless Switched Reluctance Motor Based on Finite-Element Method

et al. 2019

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The bearingless switched reluctance motor (BSRM) integrates the switched reluctance motor (SRM) with the magnetic bearings, which avoids mechanical bearings-loss and makes it promising in high-speed applications. In this paper, a comprehensive framework for the multi-physics multi-objective optimal design of BSRMs based on finite-element method (FEM) is proposed. At first, the 2-D electromagnetic model of a fabricated initial design prototype is built and solved by the open-source FEM software, Elmer. The iron loss model in Elmer based on the Fourier series is modified by a transient iron loss model with less computation time. Besides, a simplified lumped-parameter (LP) thermal model of the BSRM is applied to estimate the temperature rise of BSRM in the steady state. Then, the comprehensive framework for the multi-physics multi-objective optimal design of BSRMs based on FEM is proposed. The objectives, constraints, and decision variables for optimization are determined. The multi-objective genetic particle swarm optimizer is utilized to obtain the Pareto front of optimization. The electromagnetic performance of the final optimal design is compared with the initial design. Comparison results show that the average electromagnetic torque and the efficiency are significantly enhanced.

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Section: Introductionmentioning

confidence: 99%

Multi-Physics Multi-Objective Optimal Design of Bearingless Switched Reluctance Motor Based on Finite-Element Method

et al. 2019

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“…In recent years, a variety of different bearingless machine setups have been introduced in the literature, and their control has become a topic of significant interest. The five-degrees-of-freedom (5-DOF) control of a bearingless machine has been reported in Takemoto et al (2009);Yamamoto et al (2011);Severson et al (2017), and other studies have considered the combination of a bearingless motor and a magnetic bearing in Cao et al (2017); Schneider and Binder (2007). Here, the 5-DOF operation refers to two radial xy-planes and one axial z-plane of the control axes.…”

Section: Introductionmentioning

confidence: 99%

Control System Commissioning of Fully Levitated Bearingless Machine

Jaatinen¹,

Vuojolainen²,

Nevaranta³

et al. 2019

MIC

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The bearingless permanent magnet synchronous motor (BPMSM) is a compact motor structure that combines the motoring and bearing functions based on well-designed integrated windings for generating both torque and magnetic suspension force. In order to achieve a successful high-performance control design for the BPMSM, an adequate model of the rotor dynamics is essential. This paper proposes simplified multiple-input and multiple-output (MIMO) control approaches, namely the pole placement and the linear-quadratic regulator (LQR), that allow to carry out identification experiments in full levitation. Additionally, the stability of the MIMO levitation controller is verified with the rotation tests. Compared with other recently published works, the novelty of this paper is to experimentally demonstrate that a stable fully levitated five-degrees-of-freedom (5-DOF) operation of a bearingless machine can be achieved by the proposed approach, and thereby, options for commissioning of such a system are obtained.

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“…However, because of the double-salient-pole structure and pulse-type phase currents, that large ripples exist in the radial force and torque has been the significant shortcoming which restricts BSRMs' application [14,15]. Hence, it is necessary to study its low torque ripple and low suspension force ripple operation.…”

Section: Introductionmentioning

confidence: 99%

Sosm Direct Torque and Direct Suspension Force Control for Double Stator Bearingless Switched Reluctance Motor

Chen¹,

Guo²,

Zhang³

2019

PIER C

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Because of the current commutation and the double salient pole structure of bearingless switched reluctance motors (BSRMs), the torque and suspension force have large ripples when traditional current control methods are used. According to the special structure of the double stator BSRM (DSBSRM), the direct decoupling of torque and suspension force is realized. Therefore, the DSBSRM can be controlled separately as a conventional 12/8 SRM and a four-poles active magnetic bearing. In order to achieve the suppression of the torque ripple and improve the robustness of speed, a direct torque control (DTC) strategy using second order sliding mode (SOSM) speed controller is proposed. In order to achieve the suppression of the suspension force ripple and rotor displacement chattering, a direct suspension force control (DSFC) strategy is proposed as well. Then the SOSM-DT/DSFC model is established by simulink. The results of simulation show that the torque ripple, suspension force ripple, and rotor radial displacements of DSBSRM can be reduced respectively. Moreover, the proposed control strategy has better robustness and dynamic performance than traditional control strategy.

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Advanced Control Method for a Single-Winding Bearingless Switched Reluctance Motor to Reduce Torque Ripple and Radial Displacement

Cited by 60 publications

References 27 publications

Multi-Physics Multi-Objective Optimal Design of Bearingless Switched Reluctance Motor Based on Finite-Element Method

Multi-Physics Multi-Objective Optimal Design of Bearingless Switched Reluctance Motor Based on Finite-Element Method

Control System Commissioning of Fully Levitated Bearingless Machine

Sosm Direct Torque and Direct Suspension Force Control for Double Stator Bearingless Switched Reluctance Motor

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