scholarly journals Design of alternating current voltage–regulating circuit based on thyristor: Comparison of single phase and three phase

2020 ◽  
Vol 53 (5-6) ◽  
pp. 884-891
Author(s):  
Zonglu Zhang
Keyword(s):  
Normal Level ◽  
Single Phase ◽  
Simulation Analysis ◽  
Power Grid ◽  
Voltage Regulation ◽  
Voltage Sag ◽  
Voltage Regulator ◽  
Phase Voltage ◽  
Current Voltage ◽  
Three Phase

The voltage sag problem in a power grid can be solved by a voltage regulator. In this study, the voltage regulator based on thyristor was used to compensate the single-phase and three-phase voltage of voltage sag fault, so as to recover the normal level of voltage. The simulation analysis was carried out on MATLAB. The results showed that voltage sag faults mainly affected the amplitude of voltage, but not the frequency of voltage. After voltage regulation, the single-phase and three-phase voltage waveforms in the fault period had a certain recovery, but the voltage regulator had a certain hysteresis effect.

On the application of single-phase voltage sag compensators in three-phase systems

2015 ◽  
Author(s):  
Igor A. Pires ◽  
Felipe Dias de Oliveira ◽  
Sidelmo M. Silva ◽  
Braz De J. Cardoso Filho
Keyword(s):  
Single Phase ◽  
Voltage Sag ◽  
Phase Voltage ◽  
Three Phase ◽  
Phase Systems

On the Application of Single-Phase Voltage Sag Compensators in Three-Phase Systems

2017 ◽  
Vol 53 (1) ◽  
pp. 630-637 ◽  
Author(s):  
Igor Amariz Pires ◽  
Filipe Dias de Oliveira ◽  
Sidelmo Magalhaes Silva ◽  
Braz de Jesus Cardoso Filho
Keyword(s):  
Single Phase ◽  
Voltage Sag ◽  
Phase Voltage ◽  
Three Phase ◽  
Phase Systems

Comparative Study of Various Adjustable Speed Drives During Voltage Sag

2016 ◽  
Vol 7 (4) ◽  
pp. 1393
Author(s):  
Renukadevi S ◽  
Rathinakumar M
Keyword(s):  
Comparative Study ◽  
Single Phase ◽  
Voltage Sag ◽  
Type B ◽  
Phase Voltage ◽  
Adjustable Speed Drives ◽  
Control Applications ◽  
Vienna Rectifier ◽  
Three Phase ◽  
Adjustable Speed

<p>This Paper compares the sensitivity of various adjustable speed drives to voltage sag for the process control applications. Three phase voltage sag of type B caused due to SLG fault is considered and four topologies of ASD’s are compared in this paper. The comparison is done especially in speed, voltage, current and torque of the ASDs. Diode rectifier without z source inverter, diode rectifier with z source inverter , single phase two leg Vienna rectifier and single phase neutral linked Vienna with z source inverter are compared and the best one is highlighted. The circuits of various ASD’s are simulated using   Matlab /Simulink. </p>

Single Phase Detection of Voltage Sag Based on Instantaneous Reactive Power Theory

2012 ◽  
Vol 433-440 ◽  
pp. 7261-7266
Author(s):  
Hui Zhi Zhang ◽  
Yong Li Li ◽  
Bo Tong Li ◽  
Shuo Zhang ◽  
Zhen Tan
Keyword(s):  
Single Phase ◽  
Reactive Power ◽  
Voltage Sag ◽  
Phase Detection ◽  
Matlab Simulation ◽  
Phase Voltage ◽  
Instantaneous Reactive Power Theory ◽  
Fast Recognition ◽  
Three Phase ◽  
Typical Condition

Voltage sag is one of the most frequent and serious dynamic problems that impact the power quality. To solve this problem, fast and precise detection of the voltage sag is needed. A detection method is presented in this paper, using single phase voltage information, to be applied in the typical condition of unsymmetrical three-phase voltage sag. This method adopts fast recognition of voltage disturbance and SPLL. Finally, MATLAB simulation has been used to verify the effectiveness of the method.

Three-phase to Single-phase Matrix Converter for Improvement of Three-phase Voltage Unbalance in Distribution System

2015 ◽  
Vol 135 (3) ◽  
pp. 168-180 ◽  
Author(s):  
Ryota Mizutani ◽  
Hirotaka Koizumi ◽  
Kentaro Hirose ◽  
Kazunari Ishibashi
Keyword(s):  
Distribution System ◽  
Single Phase ◽  
Matrix Converter ◽  
Phase Voltage ◽  
Voltage Unbalance ◽  
Three Phase

Design and Implementation of Wireless Voltage Monitoring System Based on Zigbee

2017 ◽  
Vol 12 (3) ◽  
pp. 83-96 ◽  
Author(s):  
Luo Xiaohui
Keyword(s):  
Monitoring System ◽  
Single Phase ◽  
Low Cost ◽  
Moving Average ◽  
Voltage Sensor ◽  
Wireless Transmission ◽  
Phase Voltage ◽  
Medium Voltage ◽  
Wireless Monitoring ◽  
Three Phase

This paper proposed a low cost wireless monitoring system based on ZigBee wireless transmission, and designed a new floating voltage sensor which is suitable for the monitoring of medium voltage and high voltage(MV/HV) public equipment. The system used TI-CC2530 as the controller, proposed a new moving average voltage sensing(MAVS) algorithm by reasonable assumptions, and adopted algorithms to perform the theoretical analysis for the single phase and three-phase voltage. At last, the author carried out a practical experiment on the wireless floating voltage sensor under the voltage up to 30kV, the experimental results showed that the proposed low cost wireless sensor can achieve a good voltage monitoring function, and the error is less than 3%.

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