Fault-Tolerant Symmetrical Six-phase Induction Motor Drive Based on Feed-forward Voltage Compensation

Seng, Hang; Tousizadeh, Mahdi; Durán, Mario J.; Munim, Wan Noraishah Wan Abdul; Rahim, N.A.

doi:10.1109/iecon.2019.8927239

Cited by 9 publications

(10 citation statements)

References 13 publications

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“…3.4.1.1. Current d 1 -q 1 PI Control without x-y Control Using Full-Order VSD A few of the available publications actually propose to keep the prefault d 1 -q 1 PI controller with n-dimensional VSD also after the OC fault occurs, without adding any extra current controllers [19,89,90,93,255]. This is performed under the assumption that there is no current control in the other subspaces, or that it is disabled after the fault.…”

Section: Current Pr or D-q Pi Controlmentioning

confidence: 99%

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

et al. 2022

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Multiphase machines are very convenient for applications that require high reliability. In this two-part survey, the state of the art about fault tolerance in multiphase drives is reviewed. In Part 1, an overview including numerous fault types was presented, along with fundamental notions about multiphase drives. Here, in Part 2, the focus is placed on phase/switch open-circuit (OC) faults in particular, which have received the most attention in the literature. Phase OC failures involve OCs in stator phases or in converter-machine connections, and switch/diode OCs are frequently dealt with similarly or identically. Thanks to the phase redundancy of multiphase drives, their operation can be satisfactorily continued under a certain number of OCs. Nonetheless, the procedure to follow for this purpose is far from unique. For given OC fault conditions, numerous fault-tolerant possibilities can be found in the literature, each of them with different advantages and disadvantages. Moreover, a great variety of methods have also been devised to detect and diagnose phase/switch OC failures so that, as soon as possible, the most appropriate fault-tolerance measures are applied. Thus, given the broad literature about tolerance to phase/switch OC faults in multiphase drives, the survey presented here is expected to be of great interest for the research community and industry.

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Section: Current Pr or D-q Pi Controlmentioning

confidence: 99%

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

et al. 2022

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“…Equation (21) shows that the PM flux-linkages in α 2 β 2frame are balanced. By applying Equation (20) to Equation ( 13), the voltage equation in α 2 β 2 -frame can be expressed as:…”

Section: Mathematical Modelling In αβ-Z 1 Z 2 Z 3 Subplanesmentioning

confidence: 99%

“…A general decoupled model of the IM with open phases and a new control method of current reconfiguration is proposed to reduce the pulsating torque and the machine losses. In [21], a simple feed‐forward voltage compensation in the harmonic subplane is proposed to reduce the torque oscillations in the six‐phase IM due to the open phase fault. However, there are no second harmonic inductances and permanent magnet (PM) flux‐linkages in the faulty six‐phase IM.…”

Section: Introductionmentioning

confidence: 99%

“…When the six‐phase or DT‐PMSM is faulty with one phase open, there might be second harmonic inductance in the self‐inductance and mutual inductance between phases. Besides, the permanent flux‐linkage is also unbalanced, therefore, the mathematical modelling of DT‐PMSM and corresponding control methodology will be different from [21].…”

Section: Introductionmentioning

confidence: 99%

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Modelling and vector control of dual three‐phase PMSM with one‐phase open

Zhu

2021

IET Electric Power Appl

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This study proposes a generic mathematical modelling and decoupling fault-tolerant vector control for dual three-phase permanent magnet synchronous machine (PMSM) with one phase open based on the conventional dual three-phase voltage source inverters, accounting for the mutual coupling between two sets of three-phase windings and the second harmonic inductance. When the dual three-phase PMSM has one phase open, the permanent flux-linkages are asymmetric and there are second harmonic components in the conventional synchronous reference frame (dq-frame). Based on the proposed mathematical modelling, both permanent magnet flux-linkages and currents become DC values in the dq-frame, and therefore, the conventional proportional integral (PI) controller can be used to regulate the dq-axis currents. Then, a decoupling fault-tolerant vector control with/ without a dedicated feed-forward compensation is proposed to validate the correctness of the proposed mathematical modelling. Experimental results on a prototype dual threephase PMSM with one phase open show that the second harmonic dq-axis currents can be well suppressed simply by the conventional PI controller and dedicated feed-forward compensation. It also shows that the decoupling fault-tolerant control based on the proposed modelling and control method has excellent dynamic performance, which is equivalent to the vector space decomposition control for the healthy machine. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…An effective solution to this problem is the addition of a feedforward voltage compensation link based on vector space decoupling. The disadvantage is that the influence of the harmonic plane on the space vector after the motor phase opencircuit fault occurs is not considered, and the dq-axis current is not fully decoupled, thus generating a high harmonic current and increasing the torque ripple of the motor [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Fault‐tolerant control technology of symmetrical six‐phase permanent magnet synchronous motor

Gao

Guo

Zhang

et al. 2022

IET Power Electronics

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In comparison with three‐phase motors, multiphase motors have garnered increasing attention owing to their high fault‐tolerant ability. When the motor has an open‐circuit fault, the stator combined magnetomotive force (MMF) changes, αβ and z1z2 subspaces are no longer decoupled, and the conventional vector control causes phase current distortion, harmonic current increase, and torque fluctuation of the motor. To address the aforementioned problems, first, the mathematical model of the common neutral symmetric six‐phase permanent magnet synchronous motor in the static coordinate system is presented in this paper. Second, the transformation matrix of αβ and z1z2 subspace decoupling is proposed, and the corresponding mathematical model of decreasing order is constructed. Third, considering the orthogonal vector of the remaining dimension after the phase fault, the reduced‐order transformation matrix expression of the general single‐phase fault is obtained, which is further extended to the double‐phase fault. Fourth, the harmonic current of the z1z2 subspace was tracked and controlled by the proportional integral resonant (PIR) regulator. Finally, simulation and experimental verification are performed, and the results demonstrate that the fault‐tolerant control algorithm proposed in this paper can effectively reduce the torque ripple and it has good dynamic performance after an open‐circuit fault.

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Fault-Tolerant Symmetrical Six-phase Induction Motor Drive Based on Feed-forward Voltage Compensation

Cited by 9 publications

References 13 publications

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

Modelling and vector control of dual three‐phase PMSM with one‐phase open

Fault‐tolerant control technology of symmetrical six‐phase permanent magnet synchronous motor

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