Field-Oriented Control of Multiphase Drives With Passive Fault Tolerance

González-Prieto, Ignacio; Durán, Mario J.; Garcia-Entrambasaguas, Paula; Bermúdez, Mario

doi:10.1109/tie.2019.2944056

Cited by 89 publications

(48 citation statements)

References 32 publications

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“…An alternative solution to evade the conflict between α-β and x-y controllers is to simply deactivate the closed-loop regulation of the x-y currents [9]. The need to modify the current references (stage 2) obviously disappears, and the control reconfiguration (stage 3) can also be circumvented if the activation of the open-loop x-y control is naturally achieved.…”

Section: Natural Fault-tolerant Indirect Rotor Field Oriented Controlmentioning

confidence: 99%

“…The need to modify the current references (stage 2) obviously disappears, and the control reconfiguration (stage 3) can also be circumvented if the activation of the open-loop x-y control is naturally achieved. This can be accomplished if the closed-loop x-y control is eliminated in healthy operation, but this solution can lead to suboptimal solutions in the presence of machine asymmetries or nonideal effects [9]. For this reason, it is suggested in [9] to set a low saturation threshold for the x-y PI controllers (Figure 2).…”

Section: Natural Fault-tolerant Indirect Rotor Field Oriented Controlmentioning

confidence: 99%

“…This can be accomplished if the closed-loop x-y control is eliminated in healthy operation, but this solution can lead to suboptimal solutions in the presence of machine asymmetries or nonideal effects [9]. For this reason, it is suggested in [9] to set a low saturation threshold for the x-y PI controllers (Figure 2). This procedure maintains the x-y controllers in healthy operation and automatically deactivates them after the OPF occurrence.…”

Section: Natural Fault-tolerant Indirect Rotor Field Oriented Controlmentioning

confidence: 99%

“…In this context, some recent works have suggested the use of a control scheme that remains valid both before and after the fault occurrence. This alternative approach skips the aforementioned stages two and three and has been baptised as natural fault tolerance, tested in six-phase systems with predictive strategies [8] and FOC [9], and also extended to nine-phase systems [10]. The core idea in these works is to maintain the x-y current control in open-loop mode in order to avoid the conflict with d-q controllers in post-fault situation.…”

Section: Introductionmentioning

confidence: 99%

“…The core idea in these works is to maintain the x-y current control in open-loop mode in order to avoid the conflict with d-q controllers in post-fault situation. While this key feature is implemented in direct controllers using virtual voltage vectors [8], FOC simply deactivates the closed-loop x-y current controllers after the fault occurrence [9]. Although the higher simplicity of the natural approach was a tipping point in the design of fault-tolerant regulation strategies for multiphase drives, stages one and four were still mandatory to protect the machine and converter from eventual over-currents.…”

Section: Introductionmentioning

confidence: 99%

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Automatic Fault-Tolerant Control of Multiphase Induction Machines: A Game Changer

et al. 2020

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Until very recently, the fault tolerance in multiphase electric drives could only be achieved after fault localization and a subsequent modification of the control scheme. This scenario was profoundly shaken with the appearance of the natural fault tolerance, as the control reconfiguration was not required anymore. Even though the control strategy was highly simplified, it was still necessary to detect the open-phase fault (OPF) in order to derate the electric drive and safeguard its integrity. This work goes one step beyond and suggests the use of an automatic fault-tolerant control (AFTC) that also avoids the detection of the OPF. The AFTC combines the natural fault-tolerant capability with a self-derating technique, finally obtaining a hardware-free software-free fault tolerance. This achievement changes completely the rules of the game in the design of fault-tolerant drives, easing at the same time their industrial application. Experimental results confirm in a six-phase induction motor (IM) drive that the proposed AFTC provides a simple and safe manner to add further reliability to multiphase electric drives.

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Section: Natural Fault-tolerant Indirect Rotor Field Oriented Controlmentioning

confidence: 99%

Section: Natural Fault-tolerant Indirect Rotor Field Oriented Controlmentioning

confidence: 99%

Section: Natural Fault-tolerant Indirect Rotor Field Oriented Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Automatic Fault-Tolerant Control of Multiphase Induction Machines: A Game Changer

et al. 2020

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A robust sensor‐less field‐oriented control of six‐phase induction motor drive with reduced common mode voltage

Shah,

Maurya

2024

Circuit Theory & Apps

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SummaryThis article narrates a robust sensor‐less indirect rotor field‐oriented control (IRFOC) of a six‐phase asymmetrical induction motor (SPAIM) drive with an online estimation of parameters and reduction of common mode voltage (CMV). In comparison to the conventional IRFOC technique, the proposed IRFOC provides the least CMV using modified space vector modulation (SVM). To guarantee proper operation of IRFOC, accurate estimation of rotor time constant is mandatory; any mismatch in the actual and tuned value may lead to poor performance of the IRFOC algorithm. This problem will be further accelerated with encoder‐less control using model‐based estimators. In this manuscript, the problem of simultaneous estimation of speed and machine parameters is investigated, and a model reference adaptive system (MRAS) based speed estimator accompanied by online estimation of parameters is proposed to improve sturdiness against variation of parameters. A Simulink model of the proposed method is developed and a simulation study is carried out. To validate the simulation results, a scaled prototype model of The SPAIM rated for 2 HP, 200 V is developed and encoder‐less IRFOC for the SPAIM drives is implemented using an STM32F407VG controller board. The performance of the proposed observers is tested and verified for all the possible operating conditions and results are presented.

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Lagrange Multipliers Aided Modulated Model Predictive Control Technique for PMSM Drives

Huang,

Wei,

et al. 2024

IEEJ Transactions Elec Engng

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The modulated model predictive control (MMPC) method utilizes multiple voltage vectors in sequence within one switching cycle, achieving a fixed switching frequency. However, the control performance of using the MMPC technique still suffers from imprecise vector duration derivation and high computational burden. To address this, this paper proposes an improved MMPC technique aided by the Lagrange multiplier method to accurately calculate the duration of each vector, and then efficiently select the optimal voltage vector. Compared to the existing MMPC techniques, the proposed one exhibits a lower computational burden and superior steady‐state performance. Those benefits have been proven by the experimental results of a 1.5 k rpm permanent magnet synchronous motor drive. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

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Field-Oriented Control of Multiphase Drives With Passive Fault Tolerance

Cited by 89 publications

References 32 publications

Automatic Fault-Tolerant Control of Multiphase Induction Machines: A Game Changer

Automatic Fault-Tolerant Control of Multiphase Induction Machines: A Game Changer

A robust sensor‐less field‐oriented control of six‐phase induction motor drive with reduced common mode voltage

Lagrange Multipliers Aided Modulated Model Predictive Control Technique for PMSM Drives

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