Analysis of a Four-Leg Inverter Feeding a Nonlinear Load using SVPWM Technique

Sahib, Abdullah; Abdulbaqi, Isam M.; Ahmed, Ali

doi:10.1109/aic-mitcsa.2017.8723014

Cited by 2 publications

(1 citation statement)

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“…On the other hand, SiC free-wheeling antiparallel diodes are quite interesting in this case since the CHB full bridge is required to handle positive and negative currents (i.e., not only during the dead time). Therefore, SiC diodes can effectively improve the CHB efficiency due to their reduced conduction forward voltage drop as well as lower reverse recovery time compared to Si diodes [27].…”

Section: Device Requirements Per Pet Stagementioning

confidence: 99%

SiC-Based High Efficiency High Isolation Dual Active Bridge Converter for a Power Electronic Transformer

et al. 2020

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This paper discusses the benefits of using silicon carbide (SiC) devices in a three-stage modular power electronic transformer. According to the requirements to be fulfilled by each stage, the second one (the DC/DC isolation converter) presents the most estimable improvements to be gained from the use of SiC devices. Therefore, this paper is focused on this second stage, implemented with a SiC-based dual active bridge. Selection of the SiC devices is detailed tackling the efficiency improvement which can be obtained when they are co-packed with SiC antiparallel Schottky diodes in addition to their intrinsic body diode. This efficiency improvement is dependent on the dual active bridge operation point. Hence, a simple device loss model is presented to assess the efficiency improvement and understand the reasons for this dependence. Experimental results from a 5-kW Dual Active Bridge prototype have been obtained to validate the model. The dual active bridge converter is also tested as part of the full PET module operating at rated power.

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Section: Device Requirements Per Pet Stagementioning

confidence: 99%

SiC-Based High Efficiency High Isolation Dual Active Bridge Converter for a Power Electronic Transformer

et al. 2020

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Nonlinear Loads Modelling and Harmonics Analysis: A Review

Htita,

Abdalla,

El Korfolly

et al. 2024

EEENG

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In modern life, the applications of nonlinear loads are increasing, especially electronic loads, such as computers, monitors, and battery chargers. Moreover, the usage of semiconductors has increased in modern lighting systems, such as LED lamps and dimmers which are used to control the lighting level. Nonlinear loads may also be in the form of variable speed drive or arc furnace loads. Due to the spread of nonlinear loads, large amounts of harmonics are generated. To study the harmonics of nonlinear loads, it is essential to represent nonlinear loads by their equivalent models in the simulation programs. This paper presents a comprehensive review of modeling methods of nonlinear loads, including time domain methods, frequency domain methods, and state space methods. Equivalent circuits are presented for different types of nonlinear loads, including static loads, dynamic loads and arc furnace loads. The paper also presents the harmonic analysis performed by the Fourier transform of different types of nonlinear loads, including harmonic percentage and its angle. This paper is considered as a comprehensive reference for researchers and engineers to model nonlinear loads and is useful in power system planning for connecting nonlinear loads where mixing nonlinear loads of similar harmonic profiles causes worse situations. Moreover, knowing the nonlinear load profile will help in the suitable mixing of linear loads to achieve lower harmonics levels.

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Analysis of a Four-Leg Inverter Feeding a Nonlinear Load using SVPWM Technique

Cited by 2 publications

References 1 publication

SiC-Based High Efficiency High Isolation Dual Active Bridge Converter for a Power Electronic Transformer

SiC-Based High Efficiency High Isolation Dual Active Bridge Converter for a Power Electronic Transformer

Nonlinear Loads Modelling and Harmonics Analysis: A Review

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