Design and Selection of High Reliability Converters for Mission Critical Industrial Applications: A Rolling Mill Case Study

Ferreira, Victor; Cupertino, Allan Fagner; Pereira, Heverton A.; Rocha, Anderson V.; Seleme, Seleme Isaac; Filho, Braz J. Cardoso

doi:10.1109/tia.2018.2829104

Cited by 30 publications

(16 citation statements)

References 27 publications

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“…This trend is a direct response to the global quest and search for sustainable and more environmental-friendly electrical power sources and utilizations. In this scenario, inverters/dc-ac converters are among the cardinal power electronics devices deployed in various key areas such as high-voltage direct-current (HVDC) transmission, [1,2], Flexible AC Transmission Systems (FACTS), [3,4], renewable energy grid integration, [5][6][7][8], railway and vehicle traction, [9][10][11], energy storage systems, [12], marine propulsion, [13], solar water pumping system, [14], grinding and rolling mills, [15], compressors and extruders, [16], to mention. Such deployment requires certain criteria to be met by the power electronics inverters of which high output voltage and a range of operational output power quality indices are crucial.…”

Section: Introductionmentioning

confidence: 99%

A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters

2021

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Multiplicity of the triangular carrier signals is a criterion for the extension of sinusoidal pulsewidth modulation, SPWM, to a number of output voltage levels per phase-leg in cascaded H-bridge (CHB) multilevel inverter (MLI). Considering medium and high voltage applications where appreciable number of output voltage levels from CHB MLI is needed, commensurate high number of carrier signals in either classical level-or phase-shifted SPWM scheme for this inverter is inevitable. High-quality output waveforms from CHB MLI system demands precise synchronization of these multi-carrier signals. Sampling issues, memory constraints and computational delays pose difficulties in achieving this synchronization for real-time digital implementation. This study presents a PWM template for CHB MLI. The developed control concept generates adequate modulation templates for CHB inverter wherein a sinusoidal modulating waveform is modified to fit in a single triangular carrier signal range. These templates can be used on CHB inverter of any level with no further control modification. Nearly even distribution of switching pulses, equal sharing of the overall real power among the constituting power switches and enhanced output voltage quality were achieved with the proposed modulation. For a 3-phase, 7-level CHB, simulation and experimental results, for an R-L load, were presented. INDEX TERMS Cascaded H-bridge inverter, sinusoidal pulse-width modulation, total harmonic distortion.

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Section: Introductionmentioning

confidence: 99%

A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters

2021

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“…Frede et al, in 2017, discussed the reliability of renewable energy systems [28]. A design study and selection of reliable converters for photovoltaic applications connected to the grid was carried out by Victor et al in 2018 [29]. Sangwongwanich et al, in 2018, conducted an approach of the power control flexibility of solar systems [30].…”

Section: General Introductionmentioning

confidence: 99%

Hybrid Systems Optimization: Application to Hybrid Systems Photovoltaic Connected to Grid. A Mali Case Study

et al. 2019

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Access to electricity and supplying reliable energy are the key elements that support local economic development and contribute to reducing poverty. Moreover, the problem of environmental protection can be considered as a factor of sustainable development. In response to these many challenges, appropriate national and regional policies, as well as mechanisms, have been implemented. In Mali, strong dependence on the importation of oil, growth in demand, and the low rate of electrification have pushed the highest authorities to think of diversified technological solutions like renewable energy for the satisfaction of energy demands, especially photovoltaics, for which the country has significant potential. The hybrid systems used is a compromise, because the emission rate of carbon dioxide emitted by thermal power plants must be reduced and limited to preserve supernatural disasters. For this, hybrid photovoltaic systems coupled to the grid increased, but the management of the production of these photovoltaics poses a lot of problem due to its intermittent status. It is in this context that we conducted an optimization study of a hybrid system photovoltaic connected to the grid. We applied our approach to the most extensive distribution post of Mali capital. For the simulation, we used the modeling and simulation tool named HOMER.

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“…AC medium-voltage converters play an important role in the industry and have high availability requirements, since a single failure may lead to a cost higher than the overall system costs. Therefore, the reliability is a very important variable in the converter design [11]. Technical surveys indicate that the lifetime target on electric drives can range from 5 to 20 years [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…For the MMC‐based electric drive applications, the impact of various common‐mode voltage and circulating current strategies on the power losses and thermal cycling of the semiconductor devices are evaluated in [8]. In [11], it is discussed a DFR applied to the rolling mills drive system, in which, in order to achieve the required reliability, proper evaluation and selection of power converter are conducted considering the thermal stress.…”

Section: Introductionmentioning

confidence: 99%

On lifetime evaluation of medium‐voltage drives based on modular multilevel converter

Júnior¹,

Cupertino

Mendonça³

et al. 2019

IET Electric Power Applications

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Reliability is an important issue related to the modular multilevel converter (MMC)-based medium voltage (MV) drives. The design for reliability (DFR) approach has been discussed in many power electronic systems in recent years. MMC-based MV drives power losses and thermal cycling are strongly affected by start-up and low-speed operation, since zero-sequence current injection must be applied. In order to implement fast thermal simulations, the traditional DFR approach does not consider the heat sink thermal capacitance, which can significantly affect the MMC lifetime prediction. This article discusses how the heat sink realisations (material, thickness) affect the MMC-predicted lifetime and evaluates how the drive start-up time affects the damage in the power converter. The case study is based on a 1.4 MW slurry pump system driven by a three-phase induction motor. The lifetime evaluation of the MMC is realised through the Monte-Carlo simulation. The results show that the traditional approach results in an underestimation of up to 42.5% of the converter lifetime. In addition, long start-up times lead to a longer lifetime when compared to the shorter start-up times, due to the reduced thermal stresses in the semiconductors.

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Design and Selection of High Reliability Converters for Mission Critical Industrial Applications: A Rolling Mill Case Study

Cited by 30 publications

References 27 publications

A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters

A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters

Hybrid Systems Optimization: Application to Hybrid Systems Photovoltaic Connected to Grid. A Mali Case Study

On lifetime evaluation of medium‐voltage drives based on modular multilevel converter

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