Results 281 to 290 of about 1,701,822 (335)

Voltage Sag Detection Technique for a Dynamic Voltage Restorer

IEEE Transactions on Industry Applications, 2003
Dynamic voltage restorers (DVRs) are used to protect sensitive loads from the effects of voltage sags on the distribution feeder. This paper presents and verifies a novel voltage sag detection technique for use in conjunction with the main control system of a DVR.
Fitzer, Chris, Barnes, Mike, Green, Peter   +2 more
openaire   +2 more sources

Control of a PMSG Wind-Turbine Under Asymmetrical Voltage Sags Using Sliding Mode Approach

IEEE Power and Energy Technology Systems Journal, 2018
The control and operation of a grid-connected wind-turbine with a permanent magnet synchronous generator have been investigated under asymmetrical voltage sags at the grid side. To deal with such conditions, a fast-acting control scheme is needed.
D. Thakur, Jin Jiang
semanticscholar   +1 more source

Dual low pass filter-based voltage sag detection for voltage sag compensator under distorted grid voltages

2014 International Electrical Engineering Congress (iEECON), 2014
In this paper, dual low pass filter (DLPF)-based voltage sag detection for voltage sag compensator under distorted grid is proposed. The conventional synchronously rotating reference frame (CSRRF)-based voltage sag detection is the most famous voltage sag detection method in the past. However it has a huge disadvantage as a long delay of detection time.
Yutthachai Sillapawicharn, Yuttana Kumsuwan   +1 more
openaire   +1 more source

Voltage sag detection - A survey

2009 International Conference for Technical Postgraduates (TECHPOS), 2009
Voltage sag has been the focus of considerable research in recent years. It can cause expensive downtime. Research on voltage sag detection has also grown up and it is an essential part of the voltage sag compensator. There are many methods have been introduced to measure and detect voltage sags.
Muhamad Mansor, Nasrudin Abdul Rahim
openaire   +1 more source

A fast single-phase voltage sag detection for voltage sag compensation system

TENCON 2014 - 2014 IEEE Region 10 Conference, 2014
This paper proposes a fast single-phase voltage sag detection for voltage sag compensation system. The operation of proposed method is based on synchronously rotating reference frame which provides fast and accurate voltage sag detection. a proposed fast single-phase voltage sag detection uses the differentiator as a (−90)-degree phase shifter to ...
openaire   +1 more source

Component-minimized voltage sag compensators

Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344), 2003
This paper presents new converter topologies for low-power voltage sag compensators, based on the elimination of the series transformer and the utilization of converter structures with reduced number of semiconductor switches. The main aspects for the specification of the components and a design example are described, along with a simulation study ...
S.M. Silva, B.J.C. Filho
openaire   +1 more source

Voltage sag analysis case studies

Conference Record Industrial and Commercial Power Systems Technical Conference 1993, 1993
This paper summarizes the results from a number of different voltage sag investigations. These investigations involve characterizing the voltage sag performance at a customer facility and evaluating equipment sensitivity to different voltage sag magnitudes and durations. Possible solutions to voltage sag sensitivity problems are also described. >
J. Lamoree, D. Mueller, P. Vinett, W. Jones   +3 more
openaire   +1 more source

Voltage sags and their characterization

2010 International Conference on Power, Control and Embedded Systems, 2010
Voltage sags are short duration reductions in rms voltage caused by short circuits, overloads and starting of large motors. Voltage sag is much more of a global problem. For proper analysis and mitigation of voltage sag, their characterization is important. The magnitude and durations are main characteristics of voltage sag.
Surya Prakash Singh, R. K. Tripathi
openaire   +1 more source

Voltage sag indices - future directions

2015 IEEE Power & Energy Society General Meeting, 2015
Presents a collection of slides covering the following topics: voltage-dip characteristics; complex dip recording; transient segment; phase-angle jump; and information extraction.
Math Bollen, null Ying Wang
openaire   +1 more source

A Novel Dual Slope Delta Modulation Technique for a Current Source Inverter Based Dynamic Voltage Restorer for Mitigation of Voltage Sags

IEEE transactions on industry applications, 2021
Sumaiya Hasan, K. Muttaqi, D. Sutanto, Md. Ashib Rahman   +3 more
semanticscholar   +1 more source