Fault Tolerant Three-Phase AC Motor Drive Topologies: A Comparison of Features, Cost, and Limitations

Welchko, B.A.; Lipo, T.Α.; Jahns, T.M.; Schulz, S.E.

doi:10.1109/tpel.2004.830074

Cited by 639 publications

(195 citation statements)

References 31 publications

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“…Welchko et al listed many interesting fault-tolerant AC motor drive topologies that unfortunately face the same drawback [25]. This paper investigates another solution, which offers a greater ability for reconfiguration.…”

Section: Iipower Electronic Architecture Tolerant To Semiconductor Fmentioning

confidence: 99%

Space-Vector PWM Control Synthesis for an H-Bridge Drive in Electric Vehicles

Kolli¹,

Béthoux

Bernardinis³

et al. 2013

IEEE Trans. Veh. Technol.

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Abstract-This paper deals with a synthesis of Space Vector PWM control methods applied for a H-bridge inverter feeding a 3-phase Permanent Magnet Synchronous Machine in Electric Vehicle application. First, a short survey of existing power converter architectures, especially those adapted to degraded operating modes, is presented. Standard SVPWM control methods are compared with three innovative ones using EV-drive specifications in the normal operating mode. Then, a rigorous analysis of the margins left in the control strategy is presented for a semiconductor switch failure to fulfill degraded operating modes. Finally, both classic and innovative strategies are implemented in numerical simulation; their results are analyzed and discussed. Index Terms-Motor drives, Inverters, Space vector pulse width modulation (SVPWM), Permanent magnet machines, Semiconductor device reliability I.INTRODUCTIONPower converters are increasingly used in automotive applications for many reasons such as power conditioning, power management, and consumption reduction. As for any embedded transportation system, these power converters are subject to severe constraints especially regarding compactness and vehicle integration. More specifically electric vehicles (EVs) require a high degree of availability (continuity of service). In particular the constraining automotive environment is characterized by severe traction-braking cycles which induce power and thermal cycling during running phases of the vehicle [1]- [2]. Indeed, thermo-mechanical stresses have a significant impact on the lifetime power switches [3]. Consequently, there is a degradation of the semiconductor devices, which finally forces them into a failed state: short-circuit (SC) or open-circuit (OC) [2]. Such failures occurring on single power switches can affect the function of power converters and spread through the traction chain elements. It is then necessary to first isolate the fault, confine it and lastly reconfigure the control algorithms to operate in the presence of the fault. Obviously, the topology of the power converters or the power chain must be adapted to allow operation in degraded mode:-by associating a fourth additional half bridge in a three-phase inverter topology connected to the neutral point of the electric motor [4]. IFSTTAR/COSYS/LTN-Laboratoire des Technologies Nouvelles 2 LGEP-Laboratoire de Génie Electrique de Paris-by using multilevel inverters topologies used in a high power traction drive [5].-by redistributing the control efforts in a four-wheel independently driven electric vehicles [6]… Furthermore, faults may also happen on sensors and can be taken into account by active fault-tolerant control systems. For example in [7]-[8], authors consider a high-performance induction-motor drive for an EV or a hybrid one (HEV). The proposed systems detect a sensor loss or a sensor recovery and dynamically change its strategies to sustain the best control performances.Besides, faults may also occur in the electrical machine and can be considered using fa...

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Section: Iipower Electronic Architecture Tolerant To Semiconductor Fmentioning

confidence: 99%

Space-Vector PWM Control Synthesis for an H-Bridge Drive in Electric Vehicles

Kolli¹,

Béthoux

Bernardinis³

et al. 2013

IEEE Trans. Veh. Technol.

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“…Under healthy conditions, the triacs are switched off and the system operates normally. Adding a fourth leg to two-level inverters can be applied to various technologies, such as mechanical relay usage, to isolate a faulty leg [152].…”

Section: Fault Tolerance In Power Convertersmentioning

confidence: 99%

Overview of condition monitoring and operation control of electric power conversion systems in direct-drive wind turbines under faults

Huang

Xiao

et al. 2017

Front. Mech. Eng.

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Electric power conversion system (EPCS), which consists of a generator and power converter, is one of the most important subsystems in a direct-drive wind turbine (DD-WT). However, this component accounts for the most failures (approximately 60% of the total number) in the entire DD-WT system according to statistical data. To improve the reliability of EPCSs and reduce the operation and maintenance cost of DD-WTs, numerous researchers have studied condition monitoring (CM) and fault diagnostics (FD). Numerous CM and FD techniques, which have respective advantages and disadvantages, have emerged. This paper provides an overview of the CM, FD, and operation control of EPCSs in DD-WTs under faults. After introducing the functional principle and structure of EPCS, this survey discusses the common failures in wind generators and power converters; briefly reviewed CM and FD methods and operation control of these generators and power converters under faults; and discussed the grid voltage faults related to EPCSs in DD-WTs. These theories and their related technical concepts are systematically discussed. Finally, predicted development trends are presented. The paper provides a valuable reference for developing service quality evaluation methods and fault operation control systems to achieve high-performance and high-intelligence DD-WTs.

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“…The proposed method in [4] for vector control of faulty IMs is also extremely dependent on the regulation of the current proportional-integral controller. Reference [5] reviews and compares fault tolerant AC drives on the basis of features, costs and limitations.…”

Section: B Introductionmentioning

confidence: 99%

“…In the majority of the previously presented FOC control schemes for two-phase IMs, the supposition (M qs /M ds ) 2 =L qs /L ds is employed [5,7,8,[10][11][12][13]. Using this supposition is reflected in the speed and torque responses of the faulty IM as fully discussed in [4].…”

Section: B Introductionmentioning

confidence: 99%

A Novel Method for Vector Control of Three-Phase Induction Motor under Open-Phase Fault

Jannati

Asgari

Idris

et al. 2015

J. Eng. Technol. Sci.

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Abstract. The majority of electrical machines such as induction motors can be modeled by an equivalent two-phase machine model (d-q model). A three-phase induction motor with one of the stator phases opened (faulty three-phase induction motor) can be also modeled by an equivalent two-phase machine. If a conventional vector control method for balanced three-phase induction motors is used for this faulty machine, significant oscillations in speed and torque will result. In this paper, a novel technique for vector control of faulty three-phase induction motors based on rotor-field oriented control (RFOC) is presented. The performance of the proposed method was evaluated using MATLAB software. The results show that it achieves significant improvements in the oscillation reduction of the speed and torque responses. Keywords: field-oriented control; open-phase fault; speed and torque oscillations; three-phase induction motors; vector control. 1 B IntroductionNowadays, field-oriented control (FOC) of induction motors (IMs) is broadly adopted to obtain high dynamic performance in drive systems. Applying a conventional control strategy such as FOC to a faulty three-phase IM (threephase machine under open-phase fault) will result insignificant oscillations in the speed and torque output [1][2][3][4]. It was shown in [1-4] that using transformation matrices, the FOC equation structure for a faulty three-phase IM can be transformed into a structure that is similar to that for a balanced IM. However, the backward terms of the stator voltage equations were neglected in the process of calculating the FOC equations [2,3]. The proposed method in [4] for vector control of faulty IMs is also extremely dependent on the regulation of the current proportional-integral controller. Reference [5] reviews and compares fault tolerant AC drives on the basis of features, costs and limitations.It is also interesting to note that the three-phase IM model with one phase cutoff is, in principle, similar to the model of a single-phase IM with two windings.

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Fault Tolerant Three-Phase AC Motor Drive Topologies: A Comparison of Features, Cost, and Limitations

Cited by 639 publications

References 31 publications

Space-Vector PWM Control Synthesis for an H-Bridge Drive in Electric Vehicles

Space-Vector PWM Control Synthesis for an H-Bridge Drive in Electric Vehicles

Overview of condition monitoring and operation control of electric power conversion systems in direct-drive wind turbines under faults

A Novel Method for Vector Control of Three-Phase Induction Motor under Open-Phase Fault

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