Machine Design and Precision Current Regulation for the Parallel DPNV Bearingless Motor Winding

Petersen, Nathan; Khamitov, Anvar; Slininger, Timothy; Severson, Eric L.

doi:10.1109/tia.2021.3059717

Cited by 12 publications

(2 citation statements)

References 23 publications

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“…Several sensors have been employed as part of the BIM control system to collect voltage, current, and speed signals [13,14]. On the one hand, the motor can still run normally without the voltage feedback signal, but it cannot work normally without a current feedback signal [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Current Sensor Fault Detection and Fault-tolerant Control of Bearingless Induction Motor Based on VCS

Zhan,

Yang,

Sun

et al. 2024

PIER C

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To ensure the normal operation of a control system for a bearingless induction motor (BIM) after current sensor failure, a virtual current sensor (VCS) fault-tolerant control strategy was proposed. First, on the basis of the coordinate transformation of the stator current of the torque winding, the fault detection marks were set to realize current sensor fault detection. Second, according to the mathematical models of BIM, the stator current differential equations included in the VCS were derived, and the solutions of the equations were used as the reconstruction current of the fault current sensor, achieving fault-tolerant operation control after the sensor fault. The simulated and experimental results show that the set fault detection marks can realize the quick and accurate identification of sensor faults, and the estimated current from the VCS output can replace the faulty current after the current sensor fails, and the stator current can be reconstructed effectively under no-load, load change, and speed change conditions, and also ensure a good suspension of the motor rotor under sudden addition of disturbance condition.

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Section: Introductionmentioning

confidence: 99%

Current Sensor Fault Detection and Fault-tolerant Control of Bearingless Induction Motor Based on VCS

Zhan,

Yang,

Sun

et al. 2024

PIER C

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“…In literature [12], six-phase windings are connected as two sets of three-phase windings, the torque, and suspension currents are superimposed on two sets of three-phase windings to simultaneously control the torque and radial force. Te authors of [12][13][14] introduced the dual-purpose nonvoltage (DPNV) winding structure of bearingless permanent magnet synchronous motor (BL-PMSM), which includes two types of structures: bridge-confgured winding and parallel winding. Te DPNV winding structure can eliminate the infuence of the induced electromotive force of torque system on the end voltage of suspension inverter.…”

Section: Introductionmentioning

confidence: 99%

Torque System Modeling and Electromagnetic Coupling Characteristics Analysis of a Midpoint Injection Type Bearingless Permanent Synchronous Magnet Motor

Bu,

2024

International Transactions on Electrical Energy Systems

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Taking the Midpoint Injection type Bearingless Permanent Magnet Synchronous Motor (MPI-BL-PMSM) as an object, to solve its problems of large torque pulsation and insufficient suspension force when adopting Midpoint Suspension Current Unilateral Injection (MPSC-UI), a Midpoint Suspension Current Bilateral Injection (MPSC-BI) solution is proposed. Based on the half-winding structure of MPI-BL-PMSM, and from the electromechanical energy conversion principle, the torque model for MPSC-BI solution is established. On this basis, the torque model for MPSC-UI method was derived. The correctness of the established torque mathematical models based on half-winding structure was verified through the finite element method (FEM), and the “dual-frequency” electromagnetic coupling characteristics of suspension current on electromagnetic torque were compared and analyzed from the perspectives of theoretical model and FEM simulation. The results indicate that the MPSC-BI method can effectively suppress or avoid the torque pulsation coupled by suspension current and can obtain about 1-time increase of controllable suspension force; the advantages of MPSC-BI solution in dynamic torque decoupling characteristics are demonstrated, while the only downside is that the coupling effect of torque current on radial suspension force is slightly greater than that of the MPSC-UI method.

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State Estimation and Run-Out Reduction for Magnetically Levitated Motor Systems

Petersen

Slininger

Severson

2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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Machine Design and Precision Current Regulation for the Parallel DPNV Bearingless Motor Winding

Cited by 12 publications

References 23 publications

Current Sensor Fault Detection and Fault-tolerant Control of Bearingless Induction Motor Based on VCS

Current Sensor Fault Detection and Fault-tolerant Control of Bearingless Induction Motor Based on VCS

Torque System Modeling and Electromagnetic Coupling Characteristics Analysis of a Midpoint Injection Type Bearingless Permanent Synchronous Magnet Motor

State Estimation and Run-Out Reduction for Magnetically Levitated Motor Systems

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