A Dual-Winding Fault-Tolerant Motor Drive System Based on the Redundancy Bridge Arm

Jiang, Xuefeng; Li, Qiang; Huang, Wei‐Ping; Cao, Ruiwu

doi:10.1109/tie.2018.2833023

Cited by 37 publications

(36 citation statements)

References 23 publications

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“…According to (7)-(10), the mathematical model of the voltage model and current model in the rotating coordinate system is no longer symmetrical and decoupled under two phases of the open condition. In addition, the rotor position information cannot be separated into (7) and (8). Thus, it is difficult to find the variables can represent the estimated error in the rotating coordinate system.…”

Section: Problems Of Conventional High Performance Position Sensorlesmentioning

confidence: 99%

“…Recently, the research on the multiphase motor drive system has been done. They are mainly focused on the application of the redundant degrees of freedoms, such as the harmonic current suppression under fault-free condition [2], the harmonic current or voltage injection under fault-free condition [3], the multi-motor series-connected drive system with a single inverter [4,5] and fault-tolerant control [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Lin

Huang

Jiang

et al. 2019

IET Electric Power Applications

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A position sensor is usually required in the existing fault-tolerant direct torque control (FT-DTC) system for the multiphase permanent magnet synchronous motor (PMSM). Thus, the volume, weight, and cost of the system is increased, and the reliability is decreased. The conventional high-performance position sensorless strategies for the multiphase motor under fault-free condition cannot be directly applied to FT-DTC system. To improve this situation, a high-speed position sensorless FT-DTC strategy for a six-phase symmetrical winding PMSM with two opened phases is proposed in this study. Firstly, modified variables and a new rotating coordinate system are defined to achieve the symmetrical and decoupled mathematical model. Secondly, a stator flux observer based on the modified variables and a new coordinate system is proposed. According to the current model of modified stator flux, the estimated modified stator current can be achieved. Then, the estimated error of the modified stator current is sent to the integrator of the modified stator flux observer to correct the voltage model. Finally, the proposed stator flux observer is applied in FT-DTC for six-phase PMSM with two opened phases to realize the position sensorless operation at high speed. The experimental results verify the feasibility and effectiveness of the proposed strategy.

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Section: Problems Of Conventional High Performance Position Sensorlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Lin

Huang

Jiang

et al. 2019

IET Electric Power Applications

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, the fault operating condition causes substantial torque ripple (497% in the presented case). Under certain conditions, it is possible to suppress it by application of appropriate drive system topology [21]. Nevertheless, it has no influence on the value of the short-circuit current.…”

Section: Influence Of Shorted Coil In Dco Modementioning

confidence: 99%

“…Multiphase motors, regardless of the type of machine, usually require a more extensive power supply system and more complex control algorithms [1][2][3][4]. Three-phase motors with independent, three-phase dual windings require two independent power supply circuits [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. As a result, two channels are obtained which, depending on the type of machine and the configuration of its windings, may be magnetically independent or partly independent.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Fault-Tolerant Dual-Channel BLDC and SR Motors

et al. 2019

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This article presents the results of a comparative analysis of two electronically commutated brushless direct current machines intended for fault-tolerant drives. Two machines designed by the authors were compared: a 12/14 dual-channel brushless direct current motor (DCBLDCM) with permanent magnets and a 12/8 dual-channel switched reluctance motor (DCSRM). Information is provided here on the winding configuration, the parameters, and the power converters of both machines. We developed mathematical models of the DCBLDCM and DCSRM which accounted for the nonlinearity of their magnetization characteristics in dual-channel operation (DCO) and single-channel operation (SCO) modes. The static torque characteristics and flux characteristics of both machines were compared for operation in DCO and SCO modes. The waveforms of the current and the electromagnetic torque are presented for DCO and SCO operating conditions. For DCO mode, an analysis of the behavior of both machines under fault conditions (i.e., asymmetrical control, shorted coil, and open phase) was performed. The two designs were compared, and their strengths and weaknesses were indicated.

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“…Cold backup and hot backup DR-BLDCM are used in aviation applications that have high-reliability requirements, such as the actuator, valve, steering gear, brake, etc. [4,5].…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Dual‐Redundancy PM Brushless DC Motors for Torque Enhancement

Dong

Jiang

et al. 2020

IEEJ Transactions Elec Engng

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Non-member Zili He, Non-member Jinghui Xu, Non-member To enhance the torque of short-time duty permanent magnet (PM) dual-redundancy brushless DC motors (DR-BLDCM) and avoid the motor overheating under a fixed outer diameter and length, a design method based on the optimization of split ratio and stator magnetic density (B m) considering thermal limitations is presented. The global thermal limitation of DR-BLDCM is set by limiting loss density. The local thermal limitation of the winding is set by limiting current density. The thermal limitations are taken as the boundary of torque enhancement design optimization. Both the cold backup and hot backup DR-BLDCM are studied in this paper. By researching the relationship between torque, split ratio, and B m , the optimal combination of split ratio and B m are calculated analytically. The influences of thermal limitations on the maximum torque and the optimal combination are analyzed, and the principle to determine the optimal combination is obtained. The analytically calculated results are verified by finite element simulation, and the error is less than 6.82%. A prototype is manufactured based on analytical design results. The error between the calculated and measured copper loss is 6.96%. The verification results show that the proposed optimization method can fully enhance the torque of DR-BLDCM under the condition of fixed overall dimension and thermal limitations.

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A Dual-Winding Fault-Tolerant Motor Drive System Based on the Redundancy Bridge Arm

Cited by 37 publications

References 23 publications

Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Comparative Analysis of Fault-Tolerant Dual-Channel BLDC and SR Motors

Design Optimization of Dual‐Redundancy PM Brushless DC Motors for Torque Enhancement

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