Design and Comparison of Two Fault-Tolerant Interior-Permanent-Magnet Motors

Chen, Qian; Liu, Guohai; Zhao, Wenxiang; Sun, Longgang; Shao, Mingming; Liu, Zhengmeng

doi:10.1109/tie.2014.2314070

Cited by 77 publications

(40 citation statements)

References 29 publications

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“…The reluctance torque ratio has been calculated using frozen permeability method as shown in Fig. 12 [20].When the current magnitude is greater than 50% of the rated, the reluctance torque becomes dominant. Thus, even in an unlikely case of partial demagnetization, the machine can still output considerable torque by exploiting the reluctance torque.…”

Section: Mtpa Testmentioning

confidence: 99%

Experimental Assessments of a Triple Redundant Nine-Phase Fault-Tolerant PMA SynRM Drive

Wang

Griffo

et al. 2019

IEEE Trans. Ind. Electron.

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Abstract-Fault tolerant machine drives are key enabling technologies in safety critical applications. The machine drives are expected to exhibit high performance in healthy conditions and accommodate as many faults as possible, namely open circuit or short circuit in the machine and inverter or even an inter-turn short circuit. This paper aims to assess a triple redundant 9-phase (3x3-phase) permanent magnet assisted synchronous reluctance machine (PMA SynRM) drive by comprehensive experimental tests under both healthy and fault conditions on a 35kW machine drive prototype. The healthy performance, fault behavior, fault detection and mitigation strategy are presented and assessed by extensive tests which demonstrate that the machine drive exhibits high performance and excellent fault tolerance with simple and cost-effective implementation. Therefore, the proposed machine drive has proven to be a practical candidate for safety critical applications.

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Section: Mtpa Testmentioning

confidence: 99%

Experimental Assessments of a Triple Redundant Nine-Phase Fault-Tolerant PMA SynRM Drive

Wang

Griffo

et al. 2019

IEEE Trans. Ind. Electron.

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“…MMF 2 in (17) is kept to zero, so the total MMF of the FT-PMV machine is the sum of MMF 1 and MMF 2 , which can be kept constant. Based on (16) and (17), (18) can be obtained as…”

Section: Short-circuit Fault-tolerant Controlmentioning

confidence: 99%

“…On the other hand, fault-tolerant permanent-magnet (PM) machines have attracted much interest in recent years [13][14][15][16], but they suffer from the compromise between fault-tolerant capability and torque density. In [17], a five-phase fault-tolerant PM vernier (FT-PMV) machine with improved torque capability was proposed.…”

Section: Introductionmentioning

confidence: 99%

Simplified Minimum Copper Loss Remedial Control of a Five-Phase Fault-Tolerant Permanent-Magnet Vernier Machine under Short-Circuit Fault

Gu¹,

Zhao²,

Zhang³

2016

Energies

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Abstract:A fault-tolerant permanent-magnet vernier (FT-PMV) machine incorporates the merits of high fault-tolerant capability and high torque density. In this paper, a new remedial control is proposed for a five-phase FT-PMV machine with short-circuit fault of stator windings. Based on the principle of copper loss minimization, the aims of the proposed control strategy are to keep magnetic motive force (MMF) unchanged and minimize torque ripple. The proposed remedial control strategy contains two parts. Firstly, the remedial currents of the healthy phases are used to compensate for the ripple of MMF caused by the short-circuit current. Secondly, an open-circuit fault-tolerant control strategy is used to compensate for the lack of normal torque in the fault phase. Finally, the vector sum of two parts is adopted to derive the remedial currents. The final expression of the proposed remedial current is simpler than that than these previous methods. In addition, the proposed remedial currents are sinusoidal, which can reduce the reactive component in instantaneous power produced by pulsating torque and iron loss of a sine back-EMF machine. A FT-PMV prototype is built. The simulations and the experiments verify the effectiveness of the proposed strategy.

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“…The authors have designed and fabricated three kinds of conventional FSCW PM motors with high reliability in previous works, including surface PM type for coupling a magnetic gear, interior spoke PM type, and interior V-shaped PM type. They are designed with the same outer rotor radius, current density, and slot fill factor, and their detailed specifications can be found in [26]. For facilitating comparative study, the two PMV motors herein also designed with the same outer rotor radius, current density, and slot fill factor as the existing conventional PM motors.…”

Section: Topology and Featuresmentioning

confidence: 99%

Quantitative Comparison of Integral and Fractional Slot Permanent Magnet Vernier Motors

Liu

Zhao

et al. 2015

IEEE Trans. Energy Convers.

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This paper presents and compares two permanent magnet vernier (PMV) motors with fractional slot concentrated windings (FSCWs) and integral slot distributed windings (ISDWs). The ISDW PMV motor is newly proposed and optimized for a fair comparison with the existing FSCW one. The equations of back electromotive force of both motors are investigated and derived showing that the ISDW PMV motor has the potential to obtain higher torque capability. Also, their electromagnetic performances, such as torque capability, fault tolerance, loss, and efficiency, are calculated and compared by using the finite-element analysis. Then, the maximum power strategy for PMV motors operating at high speed is presented. The simulated results show that both motors possess excellent flux weakening capability. Finally, the effectiveness of the theoretical analysis is verified by the finiteelement analysis results and experiments on a prototype FSCW PMV motor.

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Design and Comparison of Two Fault-Tolerant Interior-Permanent-Magnet Motors

Cited by 77 publications

References 29 publications

Experimental Assessments of a Triple Redundant Nine-Phase Fault-Tolerant PMA SynRM Drive

Experimental Assessments of a Triple Redundant Nine-Phase Fault-Tolerant PMA SynRM Drive

Simplified Minimum Copper Loss Remedial Control of a Five-Phase Fault-Tolerant Permanent-Magnet Vernier Machine under Short-Circuit Fault

Quantitative Comparison of Integral and Fractional Slot Permanent Magnet Vernier Motors

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