Results 221 to 230 of about 586 (259)
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Model Predictive Control of Quasi-Z-Source Four-Leg Inverter
IEEE Transactions on Industrial Electronics, 2016This paper presents a model predictive control (MPC) scheme for quasi-Z-source (qZS) three-phase four-leg inverter. In order to cope with the drawbacks of traditional voltage source inverters (VSIs), a qZS three-phase four-leg inverter topology is proposed.
Sertac Bayhan +2 more
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Modified selective harmonic elimination employed in four-leg NPC inverters
IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014Three-phase four-leg neutral point clamped (NPC) inverter is more suitable in dealing with all sort of the loads especially unbalanced/nonlinear due to harmonics issues. Most control strategies applied on four-leg NPC are classified as high switching frequency lead to high power losses and low efficiency.
Mohammad Sharifzadeh +4 more
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A Study of a 3-Phase Four-Leg Inverter Dynamic Operation
2018 International Conference on Engineering Technology and their Applications (IICETA), 2018this paper deals with an analysis and study of 3P4L-VSI using the 3D-SVPWM technique. The analysis adopts the average large signal model. The work intended to show the ability of this inverter to overcome the challenge of feeding unbalanced, nonlinear and continuously changed load with balanced 3-phase voltages.
Isam M. Abdulbaqi +2 more
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A simple control technique for three-phase four-leg inverters
International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006., 2006The paper takes into consideration three-phase four-leg inverters used to supply unbalanced loads without using a transformer. In literature different three-dimensional modulation techniques, requiring complex mathematical algorithms are proposed for this kind of inverter.
A. Bellini, S. Bifaretti
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Concise Modulation Strategies for Four-Leg Voltage Source Inverters
IEEE Transactions on Power Electronics, 2004The continuous, discontinuous pulse-width modulation (PWM) schemes and a novel space vector modulation methodology are proposed in this paper for four-leg dc-ac inverters. Using a space vector definition that includes the zero sequence voltage component and partitioning the feasible sixteen modes into two separate sets - one set having zero sequence ...
O. Ojo, P.M. Kshirsagar
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Concise modulation strategies for four-leg voltage source inverters
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289), 2003Continuous and discontinuous pulse-width modulation (PWM) schemes and a novel space vector modulation methodology are proposed in this paper for four-leg DC-AC inverters. Using a space vector definition that includes the zero sequence voltage component and partitioning the feasible sixteen modes into two separate sets-one set having zero sequence ...
O. Ojo, P. Kshirsagar, O. Osaloni
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Modeling of a four-leg inverter based DSTATCOM for load compensation
2010 International Conference on Power System Technology, 2010This paper derives a generalized mathematical model of a three-phase, four-wire, four-leg voltage source inverter topology for a DSTATCOM application. The four-leg inverter is operated in a current controlled mode by a suitable control strategy, to inject compensator currents in order to achieve harmonic compensation, load balancing and power factor ...
S. Srikanthan, Mahesh K. Mishra
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Active Filter Based on Four-Leg Inverter and PQ Theory
2019 21st International Middle East Power Systems Conference (MEPCON), 2019The active power filter and unbalance compensator systems play an important role in power quality enhancement. This paper introduces the active power filter based on the 4-leg inverter for 4-wire applications. This system is capable to filter the source current from both harmonics and unbalance components.
Mohamed M. El-sotouhy +4 more
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Novel random pulse position modulation for three-phase four-leg inverters
Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 2018Aiming at improving the harmonic spectra spreading effect, two randomized pulse position modulation strategies are proposed for three-phase four-leg inverters. Based on the volt-second balance law and the fixed switching frequency, the first proposed strategy places the center randomly during one carrier cycle with a limited degree of freedom, and the ...
Tinglong Pan +3 more
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Digital-Scalar PWM Approaches Applied to Four-Leg Voltage-Source Inverters
IEEE Transactions on Industrial Electronics, 2013In this paper, we present two modulation schemes for generating unbalanced voltages by means of four-leg voltage-source inverters. The first modulation is an extended scheme of a digital-scalar pulsewidth modulation previously proposed for controlling three-leg inverters.
Darlan Alexandria Fernandes +2 more
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