Reliability and Cost Assessment of Fault-Tolerant Inverter Topologies for Multi-Motor Drive Systems

Sakka, Mustapha Al; Geury, Thomas; Dhaens, Miguel; Sakka, Monzer Al; Baghdadi, Mohamed El; Hegazy, Omar

doi:10.23919/epe21ecceeurope50061.2021.9570712

Cited by 7 publications

(8 citation statements)

References 9 publications

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“…Hence, the additional SC of the original algorithm and the ripple it causes might eventually cost more time. Finally, as shown by simulation in [11], short differences in fault localization time are not critical for motor drive systems, thus, an algorithm with less SCs is preferable.…”

Section: Fault Localization Algorithmmentioning

confidence: 98%

Extension of the Stray Voltage Capture Short-Circuit Detection Method to a 6-Phase Fault-Tolerant Dual-Motor Drive

Al Sakka,

Hosseinabadi,

Geury

et al. 2024

IEEE Open J. Power Electron.

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This paper investigates and validates the applicability of the recently developed stray voltage capture (SVC) ultra-fast short-circuit (SC) detection method and its extended version (ESVC) to fault-tolerant multi-motor drives. As these methods are system-based, a fault localization algorithm is also developed. Simulation analysis of the inverter stray inductances shows additional challenges for the SVC method making it hard to achieve ultra-fast SC detection. The ESVC method is slower but overcomes these challenges. The methods are adapted for a 400 V 6-phase Silicon Carbide based inverter equipped with a 2-level turn-Off hardware protection scheme. Fault under load and hard switching fault tests are performed showing the effectiveness of the ESVC in fast (smaller than 330 ns) and reliable SC detection and protection for SiC MOSFETs. The fault localization algorithm is also validated showing a localization speed smaller than 20 µs.

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Section: Fault Localization Algorithmmentioning

confidence: 98%

Extension of the Stray Voltage Capture Short-Circuit Detection Method to a 6-Phase Fault-Tolerant Dual-Motor Drive

Al Sakka,

Hosseinabadi,

Geury

et al. 2024

IEEE Open J. Power Electron.

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“…With a multimotor drive some of the components may be shared. For example, the SL topology can be made fault-tolerant through a single redundant leg, which, for two-motor systems, can give origin to the conventional-combined to single leg topology (CCtoSL) in Figure 9b), or the leg-redundant conventionalcombined (LR-CC) topology in Figure 9c), see the detailed assessment in [11].…”

Section: Power Electronics For Auxiliaries and Chassis Actuatorsmentioning

confidence: 99%

Innovative e-machine and power electronics solutions for e-axle and e-corner vehicle powertrains

Sorniotti

2023

Proceedings of the FISITA - Technology and Mobility Conference Europe 2023

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The Horizon Europe EM-TECH and HighScape projects address innovative solutions for automotive electric powertrains, to achieve higher energy efficiency, reduced volume and mass, as well as reduced cost. The two projects are distinct yet complementary and synergic, where the former focuses on electric machines (e-Machines), while the latter on wide bandgap (WBG) based power electronics (PE). This paper outlines the main innovations of EM-TECH and HighScape, targeting a wide range of vehicle applications, including passenger cars and commercial vehicles. Specifically, EM-TECH deals with: i) modular designs of on-board axial flux machines (AFMs) for reducing the implementation costs of scalable centralised powertrains for electric axle (e-Axle) solutions; ii) in-wheel motors (IWMs) integrated with electric gearing, for expanding the high efficiency region of electric corner (e-Corner) powertrains; and iii) the use of permanent magnets deriving from recycling processes to improve sustainability. In parallel, HighScape targets the physical and functional integration of the PE of WBG based traction inverters, onboard chargers, DC/DC converters, and electric drives for auxiliaries and actuators.

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“…The redundant leg does not only accommodate a fault in the inverter or rectifier but also the DC/DC buck/boost converter between them as shown in Figure 11. Sharing a redundant leg is equally applicable to multi-motor systems as investigated in [79], where it is suggested for a six-leg and a five-leg (SL) inverter for a dual motor system. Applying the LRI strategy to the SA topology is also possible as proposed in [80].…”

Section: Leg-redundant Invertermentioning

confidence: 99%

“…The results of the cost assessment are presented in Table 1 relative to the cost of the CONV topology. For reliability, all topologies have the same DC bus and reliability of relays can be disregarded as relays here work as simple conductors and are only switched once a fault occurs [79]. Thus, the number of semiconductor switches and the type of faults that a topology can accommodate for are the primary factors.…”

Section: Cost Factormentioning

confidence: 99%

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Review of Fault Tolerant Multi-Motor Drive Topologies for Automotive Applications

et al. 2022

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With vehicle electrification and employment of X-by-wire technology, mechanical systems are being replaced by motor drives which improve the efficiency and performance of vehicular systems. However, motor drives have a lower power density and reliability compared to mechanical solutions. Multi-motor drives have the potential of mitigating both these drawbacks. In this paper, a state-of-the-art review of multi-motor drives and their application to vehicular systems is carried out. Firstly, the case of multi-motor systems in automotive applications is laid out by presenting the different vehicular systems comprising multiple motors. Secondly, multi-motor drive topologies with improved power density, reliability and fault tolerance capabilities are thoroughly analyzed. Finally, the topologies are assessed and compared in the context of automotive applications. The assessment verifies that multi-motor drives allow for fault tolerant and cost-effective solutions that are suitable for automotive applications.

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Reliability and Cost Assessment of Fault-Tolerant Inverter Topologies for Multi-Motor Drive Systems

Cited by 7 publications

References 9 publications

Extension of the Stray Voltage Capture Short-Circuit Detection Method to a 6-Phase Fault-Tolerant Dual-Motor Drive

Extension of the Stray Voltage Capture Short-Circuit Detection Method to a 6-Phase Fault-Tolerant Dual-Motor Drive

Innovative e-machine and power electronics solutions for e-axle and e-corner vehicle powertrains

Review of Fault Tolerant Multi-Motor Drive Topologies for Automotive Applications

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