Fault tolerant motor drive system with redundancy for critical applications

Ertugrul, N.; Soong, Wen L.; Dostal, G.; Saxon, D.

doi:10.1109/psec.2002.1022381

Cited by 77 publications

(35 citation statements)

References 10 publications

(2 reference statements)

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“…Other authors suggest segmenting the power source with two converters feeding double-star synchronous machines. This architecture is fault-tolerant and ensures minimum loss control under fault phase conditions [30]- [31].…”

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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“…After resolving the expression (8) in steady-state regime, the general expression of thermal resistances of different motor components (ܴ ௗ௨ ௧ (°C/W)) representing the conductive heat transfer in one direction is [14] ܴ ௗ௨ ௧ ൌ ‫ܮ‬ ߣܵ (9) where L (m) and S (m²) are the length following the heat flow direction and the area of the cross-section of the motor component.…”

Section: Thermal Conductionmentioning

confidence: 99%

“…However, because of the increase of additional end-winding length, the series [9] or parallel [6] motor connections need more system volume than the single-motor structure.…”

mentioning

confidence: 99%

Thermal-electromagnetic analysis of a fault-tolerant dual-star flux-switching permanent magnet motor for critical applications

Li¹,

Ojeda²,

Hoang³

et al. 2011

IET Electr. Power Appl.

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“…Ce mode d'alimentation sans couplage électrique (figure 1) demeure peu répandu dans un contexte industriel, hormis dans les applications à haute sûreté de fonctionnement. Il est retenu ici pour contrôler le maximum de degrés de liberté (Ertugrul et al, 2002, Bennett et al, 2004Baumann et al, 2007).…”

Section: Hypothèsesunclassified