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Ac Dc - Springer Nature

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Last Updated: 10 January 2023

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AC-DC Microgrid Analysis Using a Hybrid Real-Time HiL Approach

The paper is based on a hardware-in-the-loop simulation of the power flow control in an AC-DC microgrid. The integrated HiL system is built using the Plecs RT Box 1 and dSpace MicroLabBox 1202, on which the AC-DC microgrid hardware configuration and control scheme are developed. Power flow control is achieved regardless of the load type and mode of operation by using the BIC.

Source link: https://doi.org/10.1007/978-981-19-2394-4_54


Real-Time Realization and Validation of LabVIEW-Based Automation Program for AC–DC Voltage and Current Measurements of AC Calibrators

Such devices are required to determine whether voltage or current is accurate and precise, and accurate voltage determination must be made. Manual measurement of ACu2013DC transfer difference at low frequency using null or Budvosky is both laborious and time-consuming because it involves gathering a large number of databases for various frequencies, voltage, and current values and performing statistical analyses on them to get confusion. The datasets are obtained using data mining techniques and then moved to an excel sheet for estimating uncertainty. The final report in excel is generated by the application, which is in a ready to print version.

Source link: https://doi.org/10.1007/978-981-19-2468-2_13


Single-Phase to Six-Phase (AC-DC-AC) Converter for Traction

The AFEC on the 1-u03d5 grid side and 6-u03d5 VSI at the induction motor side are managed autonomously. The proposed converter addresses the power quality issues inherent with the 1-u03d5 diode bridge rectifier fed VSI-driven induction motor drive, as well as increasing the drive's efficiency by minimizing the torque ripple. Under different load conditions of the induction motor drive, the control system, developed for a 1-u03d5 AFEC maintains UPF operation on the grid side and DC-bus voltage is maintained constant.

Source link: https://doi.org/10.2991/978-94-6463-078-7_15


Improved Phasor Particle Swarm Optimization with Fitness Distance Balance for Optimal Power Flow Problem of Hybrid AC/DC Power Grids

A common real-world engineering issue with an optimal power flow of the hybrid AC/DC power grids, including voltage source converter based multi-terminal direct current links, has been investigated. The high geometric complexity of the search space in which it is defined makes finding the global optimum solution to this problem difficult, due to the constraint and specific functions of this power system planning issue. Based on the issue's search capabilities, PPSO's search operators were tested, and according to the report's findings, PPSO's search results were redesigned to satisfy the requirements in the power system planning problem. In the CEC 2020 test suite, the developed FDBPPSO algorithm has been used to solve the optimal power flow issue in hybrid AC/DC power systems, as well as unimodal, multi-modal, hybrid, and composition type problems.

Source link: https://doi.org/10.1007/978-3-031-09753-9_24


Control Method for Grid-Connected/Islanding Switching of Hybrid AC/DC Microgrid

DGs often implement continuous power control in gird-connected mode, while at least one DG implements constant voltage regulation in islanding mode, according to a master-slave control scheme. This paper introduces a control system to ensure smooth switching from grid-connected to islanding mode by implementing state tracking of P control and V control. In grid-connected mode, the state tracking system can provide the current reference signal of the V control track that of the P control in grid-connected mode.

Source link: https://doi.org/10.1007/s42835-022-01146-8


Improvement of power quality parameters using modulated-unified power quality conditioner and switched-inductor boost converter by the optimization techniques for a hybrid AC/DC microgrid

Modular-unified power quality conditioner The AC microgrid's ordered module is a modularized-unified power quality conditioner. Moreover, the DC microgrid's most suitable component is a switched-inductor boost converter module. The aim of S-IBCM is to increase DC microgrid effectiveness. The research challenge in this paper is divided into two parts: first, adjusting the control parameters of M-UPQC by the black hole optimization, Harris hawk optimization, and grasshopper optimization algorithm methods; second, presenting a new version of the BC module called S-IBCM to increase DCMG efficiency; and second, describing a new version of the BC module called S-IBCM to increase DCMG's effectiveness.

Source link: https://doi.org/10.1038/s41598-022-26001-8

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions