scholarly journals A cascaded converter using hybrid cells and H-bridge structure

2021 ◽  
Vol 10 (6) ◽  
pp. 2972-2979
Author(s):  
Satya Subrahmanya Ajay Dangeti ◽  
Chaitanya Kishore Patnaik Sekharamantry ◽  
Venkata Kowshik Bayanti ◽  
B. A. Raju Ch ◽  
KVS Ramachandra Murthy ◽  
...  
Keyword(s):  
Single Phase ◽  
Lower Number ◽  
Bridge Structure ◽  
Hybrid Cells ◽  
Two Stage ◽  
Modes Of Operation ◽  
Matlab Simulink ◽  
Cascaded Converter

This paper introduces a cascaded converter structure using hybrid two-level cells to form a single-phase seven-level inverter. Compared to various conventional and existing multilevel (MLI) topologies, this topology requires a lower number of devices. It uses several DC sources integrated in two-stage cells to provide the required voltage. In this topology, the DC-link condensers are not necessary. The modes of operation and modulation of the structure proposed are described in depth. Finally, in the MATLAB/Simulink platform the new topology is evaluated and the results reported. 

Single-Phase Two-Stage Boost Sinusoidal Rectifier Using Capacitor for Pumping Action

2012 ◽  
Vol 132 (12) ◽  
pp. 1169-1170
Author(s):  
Yasuhiko Neba ◽  
Kouichi Ishizaka ◽  
Ryozo Itoh ◽  
Hirokazu Matsumoto ◽  
Tomoya Sakano
Keyword(s):  
Single Phase ◽  
Two Stage

scholarly journals A novel fault section locating method based on distance matching degree in distribution network

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhenxing Li ◽  
Jialing Wan ◽  
Pengfei Wang ◽  
Hanli Weng ◽  
Zhenhua Li
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Matlab Simulink ◽  
Grounding Resistance ◽  
Blind Zone ◽  
System Transition ◽  
Transition Resistance ◽  
Zero Sequence ◽  
Matching Degree ◽  
Amplitude Characteristics

AbstractFault section location of a single-phase grounding fault is affected by the neutral grounding mode of the system, transition resistance, and the blind zone. A fault section locating method based on an amplitude feature and an intelligent distance algorithm is proposed to eliminate the influence of the above factors. By analyzing and comparing the amplitude characteristics of the zero-sequence current transient components at both ends of the healthy section and the faulty section, a distance algorithm with strong abnormal data immune capability is introduced in this paper. The matching degree of the amplitude characteristics at both ends of the feeder section are used as the criterion and by comparing with the set threshold, the faulty section is effectively determined. Finally, simulations using Matlab/Simulink and PSCAD/EMTDC show that the proposed section locating method can locate the faulty section accurately, and is not affected by grounding mode, grounding resistance, or the blind zone.

Single-Phase Two-Stage Transformerless Grid-Connected Inverter For Photovoltaic Applications

2021 ◽  
Author(s):  
Naser Vosoughi Kurdkandi ◽  
Milad Ghavipanjeh Marangalu ◽  
Tala Hemmati ◽  
Seyed Hossein Hosseini ◽  
Oleksandr Husev ◽  
...  
Keyword(s):  
Single Phase ◽  
Two Stage ◽  
Photovoltaic Applications ◽  
Grid Connected Inverter

COMPUTER SIMULATION OF A SINGLE-PHASE ASYNCHRONOUS MOTOR

2020 ◽  
pp. 29-35
Author(s):  
S.Yu. Trudnev ◽  
Keyword(s):  
Computer Simulation ◽  
Single Phase ◽  
Asynchronous Motor ◽  
Computer Models ◽  
Virtual Model ◽  
Modes Of Operation ◽  
The Real ◽  
Matlab Program ◽  
Virtual Models ◽  
Asynchronous Motors

The most widely used single-phase asynchronous motors are described and also substitution and vector dia-grams are reviewed. Theoretical and mathematical descriptions of processes of controlling and enabling asynchronous modes of operation were provided, on the basis of which computer models of a single-phase asynchronous motor in static and dynamic modes was created in the Matlab program. Experiments were per-formed on the real and virtual models, and the data obtained were processed and compared to confirm the adequacy of the developed virtual model.

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