scholarly journals 15 kVA Three-Phase Low-Voltage SOP Prototype Laboratory Tests Results

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3895
Author(s):  
Thomas Pidancier ◽  
Mokhtar Bozorg ◽  
Dominique Roggo ◽  
Patrick Favre-Perrod ◽  
Mauro Carpita
Keyword(s):  
Laboratory Tests ◽  
Low Voltage ◽  
Load Capacity ◽  
Full Scale ◽  
Voltage Profile ◽  
Laboratory Environment ◽  
Three Phase ◽  
Design And Manufacturing ◽  
Converter Design ◽  
Open Point

In this paper, a 15 kVA soft open point converter is presented. The converter design and manufacturing have been presented in previous papers. The aim of this paper was to show the results of the devices in a full-scale laboratory environment, Gridlab, made of four distribution LV feeders, each rated 40 A. The tests demonstrated the good dynamics of the SOP control and its usefulness in performing a suitable PQ control. They also showed an improvement in the voltage profile and in the load capacity of the overall network. In the final part of the paper, the feedback earned during the development and the test of this first prototype are presented. This feedback will benefit the team for the design of a new improved 50 kVA version.

scholarly journals D-PMU and 5G-Network-Based Coordination Control Method for Three-Phase Imbalance Mitigation Units in the LVDN

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2754
Author(s):  
Mengmeng Xiao ◽  
Shaorong Wang ◽  
Zia Ullah
Keyword(s):  
Mobile Networks ◽  
Control Method ◽  
Low Voltage ◽  
Control Unit ◽  
Distribution Networks ◽  
Optimal Operation ◽  
Positive Sequence ◽  
Measurement Unit ◽  
Control Units ◽  
Three Phase

Three-phase imbalance is a long-term issue existing in low-voltage distribution networks (LVDNs), which consequently has an inverse impact on the safe and optimal operation of LVDNs. Recently, the increasing integration of single-phase distributed generations (DGs) and flexible loads has increased the probability of imbalance occurrence in LVDNs. To overcome the above challenges, this paper proposes a novel methodology based on the concept of "Active Asymmetry Energy-Absorbing (AAEA)" utilizing loads with a back-to-back converter, denoted as “AAEA Unit” in this paper. AAEA Units are deployed and coordinated to actively absorb asymmetry power among three phases for imbalance mitigation in LVDNs based on the high-precision, high-accuracy, and real-time distribution-level phasor measurement unit (D-PMU) data acquisition system and the 5th generation mobile networks (5G) communication channels. Furthermore, the control scheme of the proposed method includes three control units. Specifically, the positive-sequence control unit is designed to maintain the voltage of the DC-capacitor of the back-to-back converter. Likewise, the negative-sequence and zero-sequence control units are expected to mitigate the imbalanced current components. A simple imbalanced LVDN is modeled and tested in Simulink/Matlab (MathWorks, US). The obtained results demonstrate the effectiveness of the proposed methodology.

An Improved Three-Phase Buck Rectifier with Low Voltage Stress on Switching Devices

2020 ◽  
pp. 1-1
Author(s):  
Qiang Chen ◽  
Jianping Xu ◽  
Fei Zeng ◽  
Rui Huang ◽  
Lei Wang
Keyword(s):  
Low Voltage ◽  
Three Phase ◽  
Voltage Stress ◽  
Switching Devices
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