Application of a Dual-slope Delta Modulated Current Source Inverter in a Dynamic Voltage Restorer to Mitigate Voltage Sags

2020 ◽  
Author(s):  
Sumaiya Hasan ◽  
Kashem. M. Muttaqi ◽  
Danny Sutanto
Keyword(s):  
Current Source ◽  
Voltage Sags ◽  
Dynamic Voltage Restorer ◽  
Current Source Inverter ◽  
Voltage Restorer ◽  
Dynamic Voltage

scholarly journals Adoption of Multilevel Inverter based Dynamic Voltage Restorer for Power Quality Improvement with Adjustable DC-Link

2020 ◽  
Vol 184 ◽  
pp. 01055
Author(s):  
Kummari Geethika ◽  
Vinay Kumar Awaar ◽  
Praveen Jugge
Keyword(s):  
Power Distribution ◽  
Electrical Power ◽  
Current Source ◽  
Multilevel Inverter ◽  
Voltage Sag ◽  
Voltage Profile ◽  
Frequency Method ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage

Dynamic Voltage Restorer (DVR) is a method of overcoming voltage sag and swell in electrical power distribution. To boost up voltage levels on load side on power disturbances DVR can be used so as the equipment connected will have good voltage profile In this Pulse Width Modulation inverter is in solid-state electronic switching device were employed along with Integrated Gate Bipolar Transistor by the DVR, the alternating current voltage is controllable at real and reactive powers which are made independently. The MLI; is organized as the cascaded H-bridge inverter units. The function of Multilevel Inverter; is to arrange the voltages from a significant direct current source. Here in the DVR, there is no need for external output filters. In the planned DVR, a dc-dc converter is combined with an MLI. By considering the voltage sag magnitude of a dc-dc converter can regulate the dc-link voltage. Hence the output voltage of the multilevel inverter; always has a last number of levels. Instead of using the PWM based technique, the fundamental frequency method can be used in the multilevel inverter. The proposed DVR operation range of mathematical analysis is specified in detail. The simulation results are prepared by using Simulink/MATLAB.

Performance Evaluation of Dynamic Voltage Restorer Based on Transformer-based Z Source Inverter

2017 ◽  
Vol 8 (3) ◽  
pp. 1101
Author(s):  
Deshpande Chinmay V. ◽  
Deshpande Chaitanya V. ◽  
Deokar Sanjay A.
Keyword(s):  
Current Source ◽  
Control Technique ◽  
Voltage Source ◽  
Voltage Sag ◽  
Inrush Current ◽  
Voltage Source Inverter ◽  
Reactive Component ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage

In this paper, latest technology is introduced in substitution to conventional voltage and current type inverter with Transformer based impedance (Z) source inverter in voltage sag assessment and mitigation and compared with voltage source inverter based dynamic voltage restorer. Transformer based impedance source inverters (Trans-Z source inverters) are newly proposed inverters that can be used to overcome downside of voltage source inverter, current source inverter and impedance source (Z-source) inverter. T-Z source inverter consists of transformer with high frequency and low leakage inductance along with low reactive component compared with conventional Z source inverter. In case of T-Z source inverter, voltage stress throughout Z-source capacitor is reduced along with inrush current limitation at startup. This paper presents modeling of T-Z source inverter based dynamic voltage restorer using MATLAB/SIMULINK software along with its THD analysis which is compared with VSI based dynamic voltage restorer. Here abc to dq0 control algorithm is employed. The control technique which is employed for simulation shows excellent results for voltage sag and swell compensation.

Mitigation of Voltage Sags and Swells by Dynamic Voltage Restorer

2013 ◽  
Vol 768 ◽  
pp. 338-343 ◽  
Author(s):  
Shakti Prasad Mishra ◽  
Lisby Varghese ◽  
J. Preetha Roselyn ◽  
D. Devaraj
Keyword(s):  
Computer Simulations ◽  
Cost Effective ◽  
Test System ◽  
Modelling And Simulation ◽  
Control Technique ◽  
Voltage Sags ◽  
Dynamic Voltage Restorer ◽  
Suitable Test ◽  
Voltage Restorer ◽  
Dynamic Voltage

This paper presents the modelling and simulation of Dynamic Voltage Restorer (DVR) for mitigation of voltage sags and swells which are the major problems and issues on non linear loads.The Dynamic Voltage Restore (DVR) has become popular as a cost effective solutions for the protection of sensitive loads from voltage sags and swells.. The control of compensation voltages in DVR based on a-b-c to d-q-0 algorithm is discussed. The proposed control technique is cost effective and simple to design. Computer simulations are carried out in a suitable test system to investigate the effectiveness of control technique by using MATLAB/SIMULINK software.

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