A Unified Analysis of the Fault Tolerance Capability in Six-Phase Induction Motor Drives

Munim, Wan Noraishah Wan Abdul; Durán, Mario J.; Seng, Hang; Bermúdez, Mario; González-Prieto, Ignacio; Rahim, Nasrudin Abd

doi:10.1109/tpel.2016.2632118

Cited by 208 publications

(176 citation statements)

References 35 publications

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“…Since the fault situation is missed and the control action is not modified, the drive performance can be distorted because -and -subspaces are no longer independent and the controllers usually have conflicting objectives. If a single OPF in phase 1 occurs in the analyzed system, the new restriction is [8]: Note that the reference values of the x-y currents are usually set to a null value in order to reduce stator copper losses in distributed-winding machines. However, it was recently stated that its performance can be highly degraded if the stator leakage inductance of the machine presents a low value [19].…”

Section: Vv-mpc With Natural Fault Tolerancementioning

confidence: 99%

“…Since the fault situation is missed and the control action is not modified, the drive performance can be distorted because α-β and x-y subspaces are no longer independent and the controllers usually have conflicting objectives. If a single OPF in phase a 1 occurs in the analyzed system, the new restriction is [8]:…”

Section: Efficient Model Predictive Control Based On Virtual Voltage mentioning

confidence: 99%

“…Then, a higher efficiency can be achieved with a simple and universal cost function, which is valid both in pre-and post-fault situations. Experimental results confirm the viability and goodness of the proposal.In terms of reliability, the FT capability, and particularly the open-phase fault (OPF) operation, can be considered the most appreciated advantage of multiphase machines, but this higher reliability has been traditionally achieved with a mandatory OPF localization/isolation [7] and a post-fault control reconfiguration [8]. Nevertheless, the natural FT recently suggested in [9] circumvents this standard trend of post-fault control strategies and provides simpler means to obtain an improved reliability.…”

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confidence: 99%

“…As a consequence, the VV-MPC becomes a universal control strategy for pre-and post-fault situations, this being a highly attractive feature for the wind energy industry. However, regardless of the selected post-fault strategy, the integrity of the system in post-fault situation can only be preserved by decreasing the torque/power production (derating) [8,10].Efficiency is also a highly appreciated characteristic of WECS because lower losses imply a better exploitation of the wind energy resources and greater torque/power production in post-fault situations. The concept of efficient control is based on the reduction of the magnetic flux in the machine at light loads to minimize the copper losses.…”

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confidence: 99%

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Efficient Model Predictive Control with Natural Fault-Tolerance in Asymmetrical Six-Phase Induction Machines

et al. 2019

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Multiphase machines allow enhancing the performance of wind energy conversion systems from the point of view of reliability and efficiency. The enhanced robustness has been traditionally achieved with a mandatory post-fault control reconfiguration. Nevertheless, when the regulation of x-y currents in multiphase drives is done in open-loop mode, the reconfiguration can be avoided. As a consequence, the reliability of the system increases because fault detection errors or delays have no impact on the post-fault performance. This capability has been recently defined as natural fault tolerance. From the point of view of the efficiency, multiphase machines present a better power density than three-phase machines and lower per-phase currents for the same voltage rating. Moreover, the implementation of control strategies based on a variable flux level can further reduce the system losses. Targeting higher reliability and efficiency for multiphase wind energy conversion systems, this work proposes the implementation of an efficient model predictive control using virtual voltage vectors for six-phase induction machines. The use of virtual voltage vectors allows regulation of the x-y currents in open-loop mode and achieving the desired natural fault tolerance. Then, a higher efficiency can be achieved with a simple and universal cost function, which is valid both in pre- and post-fault situations. Experimental results confirm the viability and goodness of the proposal.

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Section: Vv-mpc With Natural Fault Tolerancementioning

confidence: 99%

Section: Efficient Model Predictive Control Based On Virtual Voltage mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Efficient Model Predictive Control with Natural Fault-Tolerance in Asymmetrical Six-Phase Induction Machines

et al. 2019

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Multiphase Electric Drives: Introduction

Durán

Levi

Barrero

2017

Wiley Encyclopedia of Electrical and Electronics Engineering

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The theory of three‐phase electric machines, power converters, and high‐performanceACdrives is typically included in many undergraduate and master engineering curricula. However, the coverage of electric drives with more than three phases (i.e., multiphase) is often absent or limited. This article aims at students and engineers with an electrical engineering background who want to extend their knowledge to multiphase electric drives. The article introduction provides the motivation for their use, some historical data and various examples of industry applications. The modeling of the electric machine, the modulation of the converter, and the high‐performance control of the drive are subsequently revisited, providing a comprehensive explanation of the differences compared to three‐phase systems. A brief up‐to‐date review of the innovative modes of operation that are exclusive to multiphase drives is also included. All the considerations relate to machines with near‐sinusoidal air gap magnetomotive force (MMF) that operate using the principle of the Tesla's rotating field.

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Experimental evaluation of a three‐phase induction motor drive during pre‐fault and post‐fault operation

Yelamarthi

Sandepudi

2021

Int Trans Electr Energ Syst

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Summary This article presents an experimental evaluation of a three‐phase induction motor drive during pre‐fault and post‐fault operation. A three‐level boost converter is used at the front end of a two‐level voltage source inverter with a current control algorithm, and a predictive torque control is used for induction motor drive. This topology retains the normal operation under open‐circuit or short‐circuit of devices in any one of the inverter legs, and also the dc‐link voltage across the capacitors is balanced. The merits of the proposed scheme are highlighted and compared with existing fault‐tolerant converter topology (B4) using simulation and experimental results. Furthermore, simulation and experimental results of the proposed scheme in the field weakening region are presented to examine the drive operation above base speed.

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A Unified Analysis of the Fault Tolerance Capability in Six-Phase Induction Motor Drives

Cited by 208 publications

References 35 publications

Efficient Model Predictive Control with Natural Fault-Tolerance in Asymmetrical Six-Phase Induction Machines

Efficient Model Predictive Control with Natural Fault-Tolerance in Asymmetrical Six-Phase Induction Machines

Multiphase Electric Drives: Introduction

Experimental evaluation of a three‐phase induction motor drive during pre‐fault and post‐fault operation

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