Reliability Analysis of a High-Efficiency SiC Three-Phase Inverter

Colmenares, Juan Carlos; Sadik, Diane-Perle; Hilber, Patrik; Nee, Hans‐Peter

doi:10.1109/jestpe.2016.2551980

Cited by 19 publications

(7 citation statements)

References 56 publications

(39 reference statements)

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“…However, for conventional high-power, two-level converters, it is hard to increase the switching frequency, due to thermal management. Silicon carbide (SiC) based two-level voltage source converters (VSC) have emerged in recent years [7]. SiC is a wide bandgap material, which offers potential benefits including higher efficiency, higher switching frequency, and higher temperature operation.…”

Section: Introductionmentioning

confidence: 99%

A Low-Complexity Modulated Model Predictive Current Control Scheme for PMSM based Starter Generator Control System in More Electric Aircraft

Wang¹,

Yu²,

Li³

et al. 2020

Preprint

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Modulated model predictive control (M2PC) has recently emerged as a possible solution for control in starter generator systems in the more electric aircraft (MEA), due to its advantages of fixed switching frequency, fast response and good performance. However, conventional M2PC requires the prediction of each possible output voltage vector, which involves a heavy computational burden for the processor, especially for multilevel converters. This is an obstacle for practical industrial applications. To solve this problem this paper introduces a new, low-complexity modulated model predictive control (LC-M2PC) for a starter generator control system with a neutral point clamped (NPC) converter. The proposed LC-M2PC only needs prediction action once in each control interval, which can reduce the computational burden of processor. Fixed switching frequency is maintained and it can achieve a lower total harmonic distortion (THD) current than conventional M2PC, using space vector modulation (SVM). This proposed LC-M2PC method is validated on a prototype electrical starter generator (ESG) system test rig with three-level NPC converter. Experimental results verify the effectiveness of the proposed method.<br>

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Section: Introductionmentioning

confidence: 99%

A Low-Complexity Modulated Model Predictive Current Control Scheme for PMSM based Starter Generator Control System in More Electric Aircraft

Wang¹,

Yu²,

Li³

et al. 2020

Preprint

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“…The researchers in [18] focus on the effect of the redundancy of a Power Distribution Unit (PDU)-reliant system and prove that any failure in the PDU, which uses no redundancy, can cause the whole system to fail. According to [19], by adding a redundant switch to a silicon carbide (SIC)-based three-phase inverter, the MTTF of the inverter can be increased by approximately five times. Furthermore, [19] suggests making a trade-off between the efficiency and reliability in the studied high-power inverter.…”

Section: Introductionmentioning

confidence: 99%

“…According to [19], by adding a redundant switch to a silicon carbide (SIC)-based three-phase inverter, the MTTF of the inverter can be increased by approximately five times. Furthermore, [19] suggests making a trade-off between the efficiency and reliability in the studied high-power inverter. In [20], the reliability of the dc-dc converter utilized in a solar farm is studied, where the converters in solar farms deal with different power ranges, and thereby having different MTTF, are associated.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy-Logic-Based Mean Time to Failure (MTTF) Analysis of Interleaved Dc-Dc Converters Equipped with Redundant-Switch Configuration

et al. 2018

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Interleaved dc-dc converters in sensitive applications necessitate an enhanced reliability. An interleaved converter equipped with redundant components can fulfill the reliability requirements. Mean Time to Failure (MTTF), as a reliability index, can be used to evaluate the expected life span of the mentioned converters. The Markov model is a helpful tool to calculate the MTTF in such systems. Different scientific reports denote different failure rates with different weight for power elements. Also, in reliability reports, failure rates of active and passive components are uncertain values. In order to approximate the failure rates fuzzy-logic-based Markov models are proposed in this paper. Then it is used to evaluate the MTTF of an interleaved multi-phase dc-dc converter, which is equipped with parallel and standby switch configurations. For the first time, fuzzy curves for MTTFs of the converters and 3D reliability function are derived in this paper. The reliability analyses give an insight to find the appropriate redundant-switch configurations for interleaved dc-dc converters under different conditions. Simulation and experimental results are provided to lend credence to the viability of the studied redundant-switch configurations in interleaved dc-dc boost converter.

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“…Additional research in the field of inverter design deals with increasing the efficiency of three-phase inverter based on SiC switches by using the parallel connection of power modules with the resulting reduction of the on-state losses as presented in [78]. A SiCinverter with a sinusoidal output filter is introduced with a compact Z-source converter in [79].…”

Section: Introductionmentioning

confidence: 99%

SiC-VSI with Sinusoidal Voltages for an Enhanced Sensorless Control of the Induction Machine

Al-Badrani

Feuersanger

Pacas

2018

2018 IEEE 4th Southern Power Electronics Conference (SPEC)

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In den letzten Jahren ist weltweit eine intensive Forschung auf dem Gebiet der Steuerung und Regelung von Drehstrommaschinen erfolgt. Die bekannten Regelverfahren in Verbindung mit den verfügbaren leistungselektronischen Umrichtern sowie mit Hilfe der sehr weit entwickelten, schnellen, elektronischen Signalverarbeitung, ermöglichte die Realisierung von elektrischen Antrieben mit hervorragenden Eigenschaften in einem weiten Drehzahl-und Drehmomentbereich. Ein geregelter Betrieb der Asynchronmaschine ohne Einschränkungen im Drehzahlstellbereich verlangt allerdings die Messung der Winkelposition des Rotors. Allerdings sind optische hochauflösende Encoder empfindlich gegen Umwelteinflüsse, wie Staub, Vibration und Temperatur, und reduzieren folglich die Systemzuverlässigkeit. Weiterhin erfordern sie zusätzliche Kabel und Schnittstellen. Daher hat man sich in den letzten Jahrzehnten, sowohl in der akademischen Welt als auch in der Industrie, mit der Entwicklung von Regelverfahren befasst, die ohne die Verwendung von mechanischen Drehgebern (Encodern) funktionieren. Diese sogenannten "sensorlosen" oder "geberlosen" Regelungen wurden in vielen Forschungsarbeiten intensiv untersucht und ständig verbessert, um eine hohe Dynamik mit Standard-Asynchronmotoren in einem weiten Drehzahlbereich zu erzielen. Es ist bekannt, dass eine Regelung der Asynchronmaschine mit alleiniger Verwendung der Klemmengrößen (Statorstrom und-spannung) ohne Messung der Rotorposition möglich ist. Leider versagen solche Methoden bei sehr kleinen Statorfrequenzen und finden deshalb nur bei höheren Drehgeschwindigkeiten Verwendung. Darüber hinaus, wird in solchen Verfahren die Messung der Klemmenspannungen vermieden und anstatt dessen die von der Regelung errechneten Sollgrößen verwendet. Die Realisierung wird deshalb komplexer, denn etwaige Nichtlinearitäten und Unzulänglichkeiten des Wechselrichters müssen im Modell berücksichtigt werden. Für die Speisung der Asynchronmaschine können auch mit SiC-Schaltern ausgestattete Wechselrichter verwendet und mit sehr hohen Schaltfrequenzen betrieben werden. In einigen Forschungsarbeiten wurden solche Systeme im Hinblick auf eine bessere Effizienz und Dynamik sowie auf die Glättung der Klemmenspannung untersucht. Die Vorliegende Arbeit verfolgt allerdings ein anderes Ziel, nämlich die Messung der nahezu sinusförmigen Statorspannungen zur Verbesserung der bekannten sensorlosen Regelverfahren sowie die Untersuchung der "Natürlichen Feldorientierten Regelung" und die Modell-Referenz-Regelung bei Speisung mit gemessenen Spannungen. vi Contents Acknowledgment .

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Reliability Analysis of a High-Efficiency SiC Three-Phase Inverter

Cited by 19 publications

References 56 publications

A Low-Complexity Modulated Model Predictive Current Control Scheme for PMSM based Starter Generator Control System in More Electric Aircraft

A Low-Complexity Modulated Model Predictive Current Control Scheme for PMSM based Starter Generator Control System in More Electric Aircraft

Fuzzy-Logic-Based Mean Time to Failure (MTTF) Analysis of Interleaved Dc-Dc Converters Equipped with Redundant-Switch Configuration

SiC-VSI with Sinusoidal Voltages for an Enhanced Sensorless Control of the Induction Machine

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