scholarly journals A Fuzzy Logic based Dynamic Voltage Restorer for Voltage Sag and Swell Mitigation for Industrial Induction Motor Loads

2011 ◽  
Vol 30 (8) ◽  
pp. 9-18 ◽  
Author(s):  
Md. Riyasat Azim ◽  
Md. Ashraful Hoque
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage

A Fuzzy Controller for Compensation of Voltage Sag/Swell Problems Using Reduced Rating Dynamic Voltage Restorer

2015 ◽  
Vol 4 (2) ◽  
pp. 45
Author(s):  
Rajesh Damaraju ◽  
S.V.N.L. Lalitha
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Fuzzy Controller ◽  
Low Cost ◽  
Voltage Sag ◽  
Transformation Technique ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Compensating Devices

<p>Non linear loads are highly effected by variations in voltages. Dynamic voltage restorer is one of the most popular compensating devices due to its low cost and better performance. Usage of Park’s transformation technique effectively reduces the rating of Dynamic voltage restorer. Application of fuzzy logic controller for getting the better result is proposed in this paper. The results are verified in Matlab/Simulink environment.</p>

Voltage Regulation using Probabilistic and Fuzzy Controlled Dynamic Voltage Restorer for Oil and Gas Industry

2020 ◽  
Vol 28 (Supp02) ◽  
pp. 49-64
Author(s):  
Monika Gupta ◽  
Smriti Srivastava ◽  
Gopal Chaudhary ◽  
Manju Khari ◽  
Javier Parra Fuente
Keyword(s):  
Fuzzy Logic ◽  
Control Strategy ◽  
Distribution System ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Voltage Sag ◽  
Gas Industry ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage

In a power distribution system, faults occurring can cause voltage sag that can affect critical loads connected in the power network which can cause serious effects in the oil and gas industry. The objective of this paper is to design and implement an efficient and economical dynamic voltage restorer (DVR) to compensate for voltage sag conditions in the oil and gas industry. Due to the complexity and sensitivity of loads, a short voltage sag duration can still cause severe power quality problems to the entire system. Dynamic Voltage Restorer (DVR) is a static series compensating type custom power device. The overall efficiency of the DVR largely relies on the effectiveness of the control strategy governing the switching of the inverters. It can be said that the heart of the DVR control strategy is the derivation of reference currents. This paper deals with the extraction of reference current values using a controller based on a combination of probabilistic and fuzzy set theory. The basis of the proposed controller is that Gaussian Mixture Model (GMM) which is a probabilistic approach can be translated to an additive fuzzy interface system i.e. Generalized Fuzzy Model (GFM). The proposed controller (GMM-GFM) initially optimizes the membership functions using GMM and the final output is calculated using GFM in a single iteration i.e. with no recursions. In the control scheme two control loops are used: a feed-forward loop that uses the Proportional and Integral (PI) controller and the feedback loop uses GMM-GFM based controller. The controller is implemented and respective simulations are performed in the MATLAB SIMULINK environment for three-phase, three-wire distribution system with various issues. A comparative analysis is then done amongst all the three controllers which are based on the T-S, ML, and GMM-GFM modes respectively. The simulation results of this comparison rank the DVR with the GMM-GFM controller first, followed by the fuzzy logic Mamdani model and then with the fuzzy logic T-S model.

scholarly journals A Fuzzy Controller for Compensation of Voltage SAG/SWELL Problems Using Reduced Rating Dynamic Voltage Restorer

2015 ◽  
Vol 15 (3) ◽  
pp. 407
Author(s):  
Rajesh Damaraju ◽  
S.V.N.L. Lalitha
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Fuzzy Controller ◽  
Low Cost ◽  
Voltage Sag ◽  
Transformation Technique ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Compensating Devices

<p>Non linear loads are highly effected by variations in voltages. Dynamic voltage restorer is one of the most popular compensating devices due to its low cost and better performance. Usage of Park’s transformation technique effectively reduces the rating of Dynamic voltage restorer. Application of fuzzy logic controller for getting the better result is proposed in this paper. The results are verified in Matlab/Simulink environment.</p>

Mitigation of Unbalanced Voltage Sag/Swells Using Dynamic Voltage Restorer Based on Super Capacitor

2015 ◽  
Vol 2 (4) ◽  
pp. 1-6
Author(s):  
K. Venkateswarlu ◽  
◽  
B. Ashwin Kumar ◽  
N. Srinivas ◽  
V. Mallikarjuna Rao ◽  
...  
Keyword(s):  
Voltage Sag ◽  
Super Capacitor ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Unbalanced Voltage ◽  
Dynamic Voltage
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