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Performance Improvement of H8 Transformerless Grid-Tied Inverter Using Model Predictive Control Considering a Weak Grid
2022
Processes
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The present study proposes improving the performance of an H8 transformerless inverter using model predictive control (MPC). ...
Unfortunately, these inverters have an earth leakage current problem due to the absence of galvanic isolation. This phenomenon represents safety and electrical problems for those systems. ...
Conclusions This research introduced the application of the MPC control algorithm to an H8 transformerless inverter. The inverter was grid-tied and supplied by a PV panel. ...
doi:10.3390/pr10071243
fatcat:a4fhfu7yxzaq7mvvy4lryfpyma
Table of Contents
2019
IEEE transactions on power electronics
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Wang, and B. Zhang 5340 An Improved H8 Topology for Common-Mode Voltage Reduction . . . . . . . Y. Xiang, X. Pei, M. Wang, P. Shi, and Y. ...
Godbersen 5646 Investigation of a Four-Switch Four-Leg Inverter: Modulation, Control, and Application to an IPMSM Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
doi:10.1109/tpel.2019.2909420
fatcat:zknbpwjzxnh2njhrjr4wkrcxb4
Independent Active and Reactive Power Control for Single Stage H8 Transformer-less Solar PV Inverter
2021
Maǧallaẗ al-abḥāṯ al-handasiyyaẗ
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The objective of the work is to present a control scheme for the H8 inverter to have better power handling capability and for independent active and reactive power control. ...
For low power grid or direct load applications, single-stage solar PV inverters without transformers are advantageous. ...
So, for this, d and q axis current controls, dependency of the inverter real and reactive power flows, and the filter element components design and parameter dependencies will be discussed analytically ...
doi:10.36909/jer.10671
fatcat:g6afpphepfdypoyqdxsnikhcde
Model Predictive Control of H7 Transformerless Inverter Powered by PV
2022
Intelligent Automation and Soft Computing
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Transformerless inverters have become an important integration of the modern photovoltaic (PV) grid-tied systems. ...
This paper proposed the application of model predictive control (MPC) to grid-connected H7 transformerless inverter supplied by the PV power system. ...
Funding Statement: This research was funded by the University of Tabuk, Grant Number S-1441-0055 and S-1441-0172 at https://www.ut.edu.sa/web/deanship-of-scientific-research/home. ...
doi:10.32604/iasc.2022.019959
fatcat:5fapo5khxrcy7oigmz36dgeq44
Hybrid PWM Techniques for a DCM-232 Three-Phase Transformerless Inverter with Reduced Leakage Ground Current
2021
Micromachines
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In particular, transformerless inverters require specific PWM techniques to improve efficiency and to deal with leakage ground current issues. ...
Calculations of time intervals for active and null vectors are performed in a conventional way, and the resulting waveforms are compared with a carrier signal. ...
feature for transformerless photovoltaic applications since the power inverter operation complies with the international standards. ...
doi:10.3390/mi13010036
pmid:35056201
pmcid:PMC8780749
fatcat:e263nud63zgalgwfdpx3w46hku
Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter with Common-Mode Voltage Reduction
2020
IEEE Access
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Finally, an experimental prototype is validated based on a TMS320F28335 DSP microcontroller and a DE0-Nano FPGA digital control platform. ...
INDEX TERMS Z-source inverter, quasi-switched boost inverter, single-stage inverter, common-mode voltage, transformerless PV system, space vector pulse-width modulation. ...
Therefore, grid-connected PV inverters need to be carefully designed to improve system performance in terms of low cost, lightweight, high efficiency, and small size [3] - [4] . ...
doi:10.1109/access.2020.3020635
fatcat:egr4scysc5dbppkpmavip6bnae
Combining Multi-Band Power System Stabilizers and Hybrid Power Flow Controllers to Support Electricity Grids with High Penetration of Distributed Renewable Generation
2022
Indonesian Journal of Electrical Engineering and Informatics (IJEEI)
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The paper demonstrates the application of a new power flow configuration consisting of a Hybrid Power Flow Controller (HPFC) and a Multi-Band Power System Stabilizer (MB-PSS) to enhance the performance ...
of a multimachine power network in the presence of solar photovoltaic (PV) and wind energy sources. ...
A PSS is proposed in [17] and [18] to improve the dynamic stability and provide adequate low-frequency damping for inverter-dominated future power systems. ...
doi:10.52549/ijeei.v10i2.3666
fatcat:b3t6yplo6ba4dfymsf2cds56f4
Stability Analysis and Auto-Tuning of Interlinking Converters Connected to Weak Grids
2019
IEEE transactions on power electronics
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This paper presents an adaptive multi-loop control scheme for inverters interlinking dc voltage sources to singlephase, low voltage ac grids. ...
Control self-adaptation is particularly useful in the case of weak grids that, due to frequent physical modifications (e.g., network reconfigurations, disconnection of generators/loads) and intrinsic lack ...
IV, where a design procedure is derived and the improvements on the grid/inverter connection stability are described. In Sec. V, the controller performance is evaluated experimentally while Sec. ...
doi:10.1109/tpel.2019.2899191
fatcat:bhoca7iydjdoteq2vfgni2m6iy
SPACE VECTOR MODULATION TECHNIQUES FOR COMMON-MODE VOLTAGE REDUCTION IN THREE-PHASE TRANSFORMERLESS SPLIT-SOURCE INVERTERS
SPACE VECTOR MODULATION TECHNIQUES FOR COMMON MODE VOLTAGE REDUCTION IN THREE-PHASE TRANSFORMERLESS SPLIT-SOURCE INVERTERS
2020
Eletrônica de Potência
SPACE VECTOR MODULATION TECHNIQUES FOR COMMON MODE VOLTAGE REDUCTION IN THREE-PHASE TRANSFORMERLESS SPLIT-SOURCE INVERTERS
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Photovoltaic (PV) systems with low input voltage usually employ an input boost converter and an output inverter. ...
Furthermore, it is performed an analysis in terms of CMV, leakage current, total harmonic distortion of lineto-line voltages and the maximum achievable modulation index. ...
In [7] an H8 inverter with zero CMV is presented; however, the topology requires additional active and passive elements. ...
doi:10.18618/rep.2020.1.0065
fatcat:joxviti57zc2topy72uqkrvhvm
Efficient Intelligent Systems for Healthcare Data Management and Delivery
2021
Zenodo
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Efficient Intelligent Systems for Healthcare Data Management and Delivery: PDF ...
The cooler was designed and powered by a solar hybrid wind system. The photovoltaic solar array is installed at the top of the truck to transform DC output alternating with Current using an inverter. ...
The data so accumulated and collected and evaluated for automated decision-making by the Manage and Control applications. ...
doi:10.5281/zenodo.5148783
fatcat:zabqdvbnkbacrgritgzu2sedsy
Electricity AC/DC Motors, Controls and Maintenance
[article]
2013
Zenodo
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A motor has the same two main parts as a generator— the field structure and the armature assembly consisting of the armature core, armature winding, commutator, and brushes. ...
Inverter-duty and vector-drive motors are designed for this purpose. ...
SSRs are available with a design to match the requirements of the application. An SSR with zero switching capability is used for resistive, inductive, and capacitive loads. ...
doi:10.5281/zenodo.5506893
fatcat:itx42o2gpjf3reski3nnh26h34
ECS Science at Its BEST (Spring 2009)
2009
The Electrochemical Society Interface
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I also want to thank Durga Misra and Katalin Voros for their h elpful and insightful comments and suggestio ns on t he initial draft of this article.
About the Author ...
Deal, who ensured that all those who interacted with him appreciated and were educated in the finer qualities and importance of ch arges, instabilities, and "drifts" in the Si-SiO 2 interface system. ...
species, such as sulfur, 33 or alloying additions, such as sodium, 34 for improved control during the processing of the molten metals. ...
doi:10.1149/2.20091if
fatcat:alywznxwrzc3xjbvmlk27wnlom
Linac Coherent Light Source: The first five years
2016
Reviews of Modern Physics
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This article presents the fundamental FEL physics and outlines the LCLS source characteristics, along with the experimental challenges, strategies, and instrumentation that accompany this novel type of ...
in extreme conditions, chemistry and soft matter, and biology. ...
(a) The response of the sample in the multiferroic phase at T = 13 K and for (b) an inverted electric field driving pulse. ...
doi:10.1103/revmodphys.88.015007
fatcat:r24kdrvtyrd7jkxcgsr2ei3mnm
Twenty-Fifth Annual Meeting February 23–25, 1981 Denver Hilton, Denver, Colorado
1981
Biophysical Journal
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The reaction center (RC) converts light energy into two forms of free energy: an electrical potential across a membrane (Ap) and a redox potential difference (AE) between a reduced quinone and oxidized ...
This is a powerful method for studying the kinetic and mechanistic aspects of photoreactions. ...
The application of modern interactive computers for data collection and analysis, plus careful control and monitoring of the voltage drop across the sensing orifice, reveals however some quite distinctive ...
doi:10.1016/s0006-3495(81)84892-8
fatcat:fqvowhe7vfhihafp7l54xhiete
Bi-Level Phase Load Balancing Methodology with Clustering-Based Consumers' Selection Criterion for Switching Device Placement in Low Voltage Distribution Networks
2021
Mathematics
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Thus, an original bi-level PLB methodology, considering a clustering-based selection criterion of the consumers for placement of the switching devices, was proposed. ...
An implementation degree of the PLB devices in the EDN by 17.5% represented the optimal solution, leading to a faster computational time with 43% and reducing the number of switching operations by 92%, ...
Reference [30] presents the adaptive coordination between the photovoltaic inverters and electric vehicle chargers based on a local controller device to solve the PLB problem. ...
doi:10.3390/math9050542
fatcat:zykmruzmnngt3jhgyf37xadjiu
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