scholarly journals Simulation and Analysis of Fault Characteristics of Distributed Solar Generation

2020 ◽  
Vol 9 (8) ◽  
pp. 305-310
Keyword(s):  
Power Supply ◽  
Fault Analysis ◽  
Current Loss ◽  
Fault Features ◽  
Inverter Power Supply ◽  
Sequence Components ◽  
Null Series ◽  
Solar Generation ◽  
Research Studies

Inverter power supply sources (DERs) are characterized by low current loss and zero negative and null series currents. Comprehension of the fault features of DER is important for fault analysis and safe relay setup. While DER modelling work has been abundant, there have been few research studies in DER fault behaviours. This paper looks at past Dominion Energy fault events. Fault scale, angle, and sequence components are evaluated to illustrate the possible difference between real DER response and previous understandings.

scholarly journals Loss Analysis of a Reactor under Inverter Power Supply Taking Account of Anomalous Eddy Current Loss

2009 ◽  
Vol 33 (2) ◽  
pp. 54-59 ◽  
Author(s):  
Y. Gao ◽  
K. Muramatsu ◽  
K. Fujiwara ◽  
S. Fukuchi ◽  
T. Takahata
Keyword(s):  
Eddy Current ◽  
Power Supply ◽  
Eddy Current Loss ◽  
Current Loss ◽  
Loss Analysis ◽  
Inverter Power Supply

Study of Induction Heating Power Supply Based on 74HC4046

2014 ◽  
Vol 1008-1009 ◽  
pp. 663-667 ◽  
Author(s):  
Yan Cui ◽  
Xiao Jun He ◽  
Ze Ping Lin ◽  
Qing Bin Chen ◽  
Wei Hao Yang ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Induction Heating ◽  
Power Supply ◽  
Simulation Experiment ◽  
Tracking System ◽  
Output Frequency ◽  
Phase Compensation ◽  
Frequency Tracking ◽  
Iron Load ◽  
Inverter Power Supply

According to the change of resistivity and magnetic permeability of iron load which will influence the resonance frequency in the process of induction heating, this paper presents a frequency tracking system based on the 74HC4046. It can control the output frequency of the power supply in real time, and make the power output frequency to trace the resonance frequency of load. This paper also analyses the phase compensation of the control system, and proposes a new way of phase compensation. The corresponding simulation experiment is done finally. It provides the theory basis to analyze and design an inverter power supply.

scholarly journals A Gliding Arc Microreactor Power Supply System Based on Push–Pull Converter Topology

2020 ◽  
Vol 10 (11) ◽  
pp. 3989
Author(s):  
Piotr Krupski ◽  
Henryka Danuta Stryczewska
Keyword(s):  
Power Supply ◽  
Plasma Reactor ◽  
Power Supplies ◽  
Electronic Systems ◽  
Process Gas ◽  
Inverter Power Supply ◽  
Special Part ◽  
Converter Topology ◽  
Power Inverters ◽  
Plasma Technologies

The era of evolution in power electronic systems has led to a widespread displacement of power supplies operating at mains frequencies. Switched-mode power inverters offer possibilities incomparably higher than mains transformers. These trends have also entered into plasma technologies, including GlidArc plasma processing. The article presents the use of an inverter power supply for a miniaturized GlidArc. It is a demonstration of using a push–pull topology in an unusual application. A special part is devoted to parasitic phenomena in the inverter and the implementation of switching overvoltages as a way of improving the ignition parameters of the power supply. The results of the tests with a plasma reactor in air conditions as a process gas are also presented.

Using Positive and Negative Sequence Components of Currents and Voltages for High Impedance Fault Analysis via ANFIS

2012 ◽  
Vol 1 (4) ◽  
pp. 132-157 ◽  
Author(s):  
Mohamed M. Ismail ◽  
M. A. Moustafa Hassan
Keyword(s):  
Distribution System ◽  
Electrical Contact ◽  
Design Procedure ◽  
Fault Analysis ◽  
Foreign Object ◽  
Inference System ◽  
Negative Sequence ◽  
High Impedance ◽  
Sequence Components ◽  
High Impedance Faults

High Impedance Faults are defined as unwanted electrical contact between an energized conductor and a non-conducting foreign object. Non-conducting foreign object present high impedances to current flow due to their material, so a fault of this type will not appear to the classical protection equipment as abnormal conditions. Presented is an approach for detection, classification, and location of high impedance faults in a distribution system using Adaptive Neuro Fuzzy Inference System (ANFIS) based on positive and negative sequence components of voltages and currents. The proposed scheme was trained by data from simulation of a distribution system under different faults conditions and different distances in a short and long transmission lines. Details of the design procedure and the results of performance using the proposed method are discussed in this paper.

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