The three-level (3L) neutral-point-clamped (NPC) voltage-source (VSC) converter has been the standard solution in medium-voltage range for industrial applications. Recently, NPC structure was improved by adding two extra active switches per phase leg, thus overcoming one of its main drawbacks: unequal power loss among semiconductors. resulting became known as (ANPC) converter. high availability these converters is mandatory, since their maintenance or replacement imply equipment downtimes...

Multichip modules (MCM) is the standard solution for high power density in current applications, which contains a multiple parallel-connected semiconductor devices inside same package. Due to limited space and parametric variations, it not realistic achieve homogeneous temperature among devices. This mismatch provokes different thermal stress, thereby reducing lifetime of hotter ones. As solution, this work investigate pulse-shadowing strategy, applied balancing MCM. Based on junction...

The modular multilevel converters (MMCs) has been employed in several applications as HVDC systems, energy storage, renewable energy, electrical drives and STATCOMs. In STATCOM application, the converter needs to compensate negative sequence components unbalanced currents. Nevertheless, design proposed literature considers only positive compensation. Since is submitted a variety of current stresses, reliability analysis strongly recommended. Therefore this work presents lifetime methodology...

In high power applications, medium voltage (MV) converters have proven to be the best solution for dealing with large amounts of energy, reducing losses and decreasing costs. The importance such equipment has placed its service continuity as most relevant concern researchers engineers. this work an IoT scheme is proposed remotely manage remaining useful life IGBT modules based on their failure precursors. structure was designed permit remote automatic actuation in converter according...

The design for reliability has gained a lot of attention in power electronic community the past few years. aim is to optimize order achieve desired goals with minimum margins. However, most applications, there are stressing conditions, which result high stress and therefore require higher As an opportunity, adapting control converters equally redistribute devices can reduce conditions also This great importance multilevel topologies particular Active Neutral Point Clamped (ANPC) topology....

In underground mining industry, mineral transportation from lower levels to the surface is critical, thus demanding thorough equipment selection. The dc motor driven hoist dominated these applications, providing superior controllability. However, due its increasing popularity, ac drive systems replaced application, including in mine hoisting. high power ratings typical of imply use medium voltage adjustable speed (MV-ASD), offering density, excellent efficiency and reliability. This paper...

Mission Critical Application is a general term for any system whose loss could cause downtime in crucial operations company. Given the importance assumed by power converters many critical systems, this research conducted framework of reliability engineering applied to well-established medium voltage converter industry environment. Condition monitoring techniques are used detect changes parameters IGBT modules aiming die and package degradation during operation. The main goal anticipate...

Fault-tolerant operation of power converters has been a challenge for engineers and designers. Although several schemes have proposed in recent years, they are typically restricted terms their capability to recover from successive failure events. The recently ANPC converter shown be able deal with multiple events due its flexible reversible reconfiguration capability. In this paper, it is introduced new thermal degradation management strategy, based on the FT-ANPC capabilities. Through an...

The unbalanced power operation of multiphase machines has been proposed for fault tolerance purpose. However, the higher number phases, increases complexity its converter. Therefore, design issues can generate thermal deviation among devices, causing extra heating, and ultimately reducing lifetime most stressed devices. This work proposes routing in drives to reduce stress specific increasing system lifetime. In this strategy, soft is explored, hotter phases redistributed others. Finite...

The Multiple-Active Bridge (MAB) converter has been proposed as an alternative to reduce the number of cells in dc-dc stage Smart Transformers (ST). Due higher bridges coupled same multi-winding transformer, a lower are necessary reach medium and low voltage demands (MV/LV). MAB-based STs power capability direct reverse flow, because its composition is purely based on bidirectional bridges. Nevertheless, ST operates most time power, only partial typically occurring. Thereby, not fully...

In the last decades, interest in solar photovoltaic (PV) energy has increased considerable around world. That are many publications that focus on temperature assessment of PV modules and heat collectors but fewer discuss reliability evaluation PV-inverters components. IGBT power key components from point view. Some plants located places with harsh ambient conditions, which can reduce drastically lifetime. This work presents a detailed study durability to show effect thermal cycling under...

In the multi-MW wind turbine market, maximum power rating of a commercial has been increased more than 5MW with view to generate from Wind Power Sites [1]. The three-level neutral-point-clamped voltage-source converter highly applied in generation system. Despite advantages, capacitor voltage unbalancing NPC converters become burning issue and invited intensive research address this problem. This work proposes method overcome problem selective harmonic elimination pulse-width modulation...

The market for digital games in Brazil has been growing prominently recent years. In this area, educational have highlighted, which demonstrate positive results the practice of gamification learning process. This article presents a serious quiz game that aims to inform you about COVID-19, highlighting importance sharing truthful information virus. Making use methodology regionalization with emphasis on everyday situations, thus intending combat false practical, scalable and playful way....

Pesquisas atuais apontam para um importante crescimento no interesse pela confiabilidade e disponibilidade de componentes equipamentos eletronicos. A tolerância contra falhas em conversores eletronicos tem merecido especial atencao importância desses aplicacoes criticas. Este trabalho propoe a realizacao conversor ANPC, baseado IGBT tolerante (FT-ANPC), proposto trabalhos recentes, bem como o monitoramento da degradacao dos modulos potencia do partir medicao tensao coletor-emissor (VCE).