Design of an efficient hybrid AC-DC-AC converter using silicon carbide for ups applications: A comparison

Alves, Wendell C.; Morais, Lenin Martins Ferreira; Cortizo, P.C.

doi:10.1109/cobep.2017.8257296

Cited by 2 publications

(5 citation statements)

References 13 publications

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“…A hybrid AC-DC-AC UPS converter described in [9] and [21] shown in Figure 2 was chosen. It consists of a Vienna rectifier at the input and a two-level inverter at the output.…”

Section: Resultsmentioning

confidence: 99%

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Multi-Objective Computational Aided Design Tool Using Pareto Analysis

2022

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Due to commercial restrictions, aiming for greater product competitiveness, uninterruptible power supplies (UPS) must exhibit optimal design in order to reduce losses, volume, and noise, as well as increase power density. However, the optimal design of a power electronic converter is a complex and repetitive task, often requiring the use of a computational tool. The main objective of this work is to present a unified computational tool capable of helping the designer to find the optimal design for a given power electronic converter. This paper will show a comparison between two power converter design techniques: the traditional industrial design approach and a multi-objective optimization approach using Pareto analysis. For this purpose, the total performance of a 10 kVA UPS was compared in terms of losses and volumes. The use of the proposed computational tool to optimize the design resulted in a UPS with better power density and efficiency.

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“…A hybrid AC-DC-AC UPS converter described in [9] and [21] shown in Figure 2 was chosen. It consists of a Vienna rectifier at the input and a two-level inverter at the output.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, as well as in [16], skin and proximity effects will be considered since for high-performance static converters such effects are of certain importance. Classically, to estimate the losses in the magnetic cores of the inductors, we the Steinmetz equation [16,19], shown in (21).…”

Section: Inductors Calculationsmentioning

confidence: 99%

Multi-Objective Computational Aided Design Tool Using Pareto Analysis

2022

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“…Silicon Carbide devices SCT3030AL (Q 1 to Q 12 ) and STPSC40065C (D 1 to D 6 ) will be used operating with switching frequencies up to 102 kHz in order to improve power density and achieve high efficiency. It was also verified in [18] that a Silicon IGBT-based converter would be unpractical due to very high switching losses when operating at 100 kHz. The converter will operate with slightly different switching frequencies for the rectifier and for the inverter to avoid resonances and oscillations.…”

Section: Introductionmentioning

confidence: 94%

“…Despite being a good first step for comparison and topology choice, the estimation of switch losses through the use of datasheet's switching energy curves, as done in [18], is not accurate. The manufacturer does not clearly state the conditions under which the double pulse test was performed, the measuring equipment used, and the inductance of the switching loop are not reported.…”

Section: Thermal Designmentioning

confidence: 99%

“…Table 1 summarizes the main specifications and design criteria for this AC-DC-AC conversion chain. An extensive topology and components comparison was done in [18] for two case scenarios, from the analyses carried out, it was decided to design the optimal converter that fits the specifications declared. The schematic diagram of the chosen topology is shown in Figure 1, it employs a Vienna Rectifier at the input and a 2-level inverter at the output.…”

Section: Introductionmentioning

confidence: 99%

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Design of an Highly Efficient AC-DC-AC Three-Phase Converter Using SiC for UPS Applications

2018

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With the constant increase of energy consumption in the world, the efficiency of systems and equipment is becoming more important. Uninterruptible Power Supply (UPS) is an equipment that provides safe and reliable supply for critical load systems, that is, systems where a supply interruption can lead to economical or even human losses. The Double Conversion UPS is the most complete UPS class in terms of load protection, regulation, performance, and reliability, however, it has lower efficiency and higher cost because of its high number of power converters. Silicon Carbide devices are emerging as an opportunity to construct power converters with higher efficiency and higher power density. The main purpose of this work is to design a three-phase AC-DC-AC converter using Silicon Carbide for Double Conversion UPS applications. The aim is to maximize efficiency and minimize volume and mass. The methodologies to size and choose the main hardware components are described in detail. Experimental results obtained with the prototype prove the high efficiency and high power density achievable with Silicon Carbide Metal Oxide Semiconductor Field Effect Transistor (MOSFETs).

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Design of an efficient hybrid AC-DC-AC converter using silicon carbide for ups applications: A comparison

Cited by 2 publications

References 13 publications

Multi-Objective Computational Aided Design Tool Using Pareto Analysis

Multi-Objective Computational Aided Design Tool Using Pareto Analysis

Design of an Highly Efficient AC-DC-AC Three-Phase Converter Using SiC for UPS Applications

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