Log in

Relevant bibliographies by topics / Positive and Negative Sequence Current Controller

Contents

Journal articles
Dissertations / Theses
Book chapters
Conference papers

Academic literature on the topic 'Positive and Negative Sequence Current Controller'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Positive and Negative Sequence Current Controller.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Positive and Negative Sequence Current Controller"

1

Najafi, Foad, Mohsen Hamzeh, and Matthias Fripp. "Unbalanced Current Sharing Control in Islanded Low Voltage Microgrids." Energies 11, no. 10 (2018): 2776. http://dx.doi.org/10.3390/en11102776.

Full text

Abstract:

This paper reports a new control strategy to improve sharing of unbalanced currents in islanded LV microgrids. This technique provides fast and effective sharing of positive-, negative- and zero-sequence currents, and is the first example of zero-sequence current sharing in the literature. The controllers are designed in the stationary frame. The control structure consists of four loops: (1) the current controller; (2) the voltage controller; (3) the droop controller and the (4) negative and zero sequence current controllers. The output current is considered unknown for the controller and is a

APA, Harvard, Vancouver, ISO, and other styles

2

Liao, Tian Fa, Chun Yang Yi, Zhao Quan Cai, Chang Wen Dong, Wei Shi, and Jia Xiang Xue. "Study on LVRT Decoupling Dual Synchronous Current Controller." Applied Mechanics and Materials 668-669 (October 2014): 532–39. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.532.

Full text

Abstract:

Under three-phase grid asymmetric fault conditions, use traditional PI controller of PV inverters to inject symmetric current positive sequence into the grid, ignoring the impact of the negative sequence current on LVRT, thus traditional PI controller does not apply to three-phase grid asymmetric faults. The paper proposes the decoupling dual synchronous current controller to reject positive, negative sequence current into the grid simultaneously and adopt positive and negative sequence flexible control to determine the active current reference and reactive current reference, avoiding the vari

APA, Harvard, Vancouver, ISO, and other styles

3

Paspatis, Alexandros, and George Konstantopoulos. "Voltage Support under Grid Faults with Inherent Current Limitation for Three-Phase Droop-Controlled Inverters." Energies 12, no. 6 (2019): 997. http://dx.doi.org/10.3390/en12060997.

Full text

Abstract:

A novel nonlinear current-limiting controller for three-phase grid-tied droop-controlled inverters that is capable of offering voltage support during balanced and unbalanced grid voltage drops is proposed in this paper. The proposed controller introduces a unified structure under both normal and abnormal grid conditions operating as a droop controller or following the recent fault-ride-through requirement to provide voltage support. In the case of unbalanced faults, the inverter can further inject or absorb the required negative sequence real and reactive power to eliminate the negative sequen

APA, Harvard, Vancouver, ISO, and other styles

4

Hossain, Md Ismail, and Mohammad A. Abido. "Positive-Negative Sequence Current Controller for LVRT Improvement of Wind Farms Integrated MMC-HVDC Network." IEEE Access 8 (2020): 193314–39. http://dx.doi.org/10.1109/access.2020.3032400.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Rasool, Akhtar, Esref Emre Ozsoy, Fiaz Ahmad, Asif Sabanoviç, and Sanjeevikumar Padmanaban. "Disturbance-observer based control of voltage-source-converter under unbalanced voltage conditions." World Journal of Engineering 14, no. 6 (2017): 522–31. http://dx.doi.org/10.1108/wje-01-2017-0021.

Full text

Abstract:

Purpose This paper aims to propose a novel grid current control strategy for grid-connected voltage source converters (VSCs) under unbalanced grid voltage conditions. Design/methodology/approach A grid voltage dynamic model is represented in symmetrical positive and negative sequence reference frames. A proportional controller structure with a first-order low-pass filter disturbance observer (DOB) is designed for power control in unbalanced voltage conditions. This controller is capable of meeting the positive sequence power requirements, and it also eliminates negative sequence power componen

APA, Harvard, Vancouver, ISO, and other styles

6

Perez-Estevez, Diego, Jesus Doval-Gandoy, Alejandro G. Yepes, and Oscar Lopez. "Positive- and Negative-Sequence Current Controller With Direct Discrete-Time Pole Placement for Grid-Tied Converters With LCL Filter." IEEE Transactions on Power Electronics 32, no. 9 (2017): 7207–21. http://dx.doi.org/10.1109/tpel.2016.2621754.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Díaz, Matías, and Roberto Cárdenas-Dobson. "Dual current control strategy to fulfill LVRT requirements in WECS." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 5 (2014): 1665–77. http://dx.doi.org/10.1108/compel-09-2013-0305.

Full text

Abstract:

Purpose – The purpose of this paper is to investigate a control strategy to fulfill low-voltage ride through (LVRT) requirements in wind energy conversion system (WECS). Design/methodology/approach – This paper considers an active front-end converter of a grid connected WECS working under grid fault conditions. Two strategies based on symmetrical components are studied and proposed: the first one considers control only for positive sequence control (PSC); the second one considered a dual controller for positive and negative sequence controller (PNSC). The performance of each strategy is studie

APA, Harvard, Vancouver, ISO, and other styles

8

Huang, Chang Xi, Shu Ying Yang, and Liu Wei Chen. "Unbalanced Control Strategy for DFIG Used in Wind Turbines." Advanced Materials Research 805-806 (September 2013): 430–35. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.430.

Full text

Abstract:

Unbalanced input voltages would make doubly fed induction generator (DFIG)-based wind turbine operating performance deteriorate, such as shaft tremble, temperature increasing, and so on, even make it cut out of the power grid. Meanwhile, without proper control the power ripples generated from wind turbines may further aggravate power grid. Considering the unbalanced conditions, DFIG was modeled in dual synchronous reference frame (SRF), namely the positive one and the negative one, based on which the dual PI current controllers were designed. To implement the dual current control, the sensing

APA, Harvard, Vancouver, ISO, and other styles

9

Zheng, Fei, Xiao Lin Zhang, and Ming Chang Ding. "Asymmetric Voltage Sag Control Strategy for Grid-Connected PV System Based on PIR Controller." Advanced Materials Research 724-725 (August 2013): 128–31. http://dx.doi.org/10.4028/www.scientific.net/amr.724-725.128.

Full text

Abstract:

This paper proposes an improved LVRT control strategy based on PIR controller for grid-connected photovoltaic system under asymmetric voltage sag fault. First, the PIR current controller is designed in the positive synchronous frame without the need to decompose the positive and negative sequence components and the dynamic adjustment method for the current-reference calculation is given in order to gain a constant active power. And then, the principle how control strategies switching between the one in normal state and the other one in fault state is revealed in detail. Finally, simulations an

APA, Harvard, Vancouver, ISO, and other styles

10

Yu, Yunjun, Zhongyang Wang, and Xiaofeng Wan. "Optimal Current Balance Control of Three-Level Inverter under Grid Voltage Unbalance: An Adaptive Dynamic Programming Approach." Energies 12, no. 15 (2019): 2864. http://dx.doi.org/10.3390/en12152864.

Full text

Abstract:

When the grid voltage is unbalanced, the positive and negative sequence components in the grid voltage cause grid current to be disordered. Under current balance control, proportional integral (PI) closed-loop control will increase the grid currents instantaneously, which affects the safety and reliability of the inverter operation, and PI parameters are difficult to select without the complete system mathematical model. This paper introduces an adaptive dynamic programming (ADP) approach to solve this problem. The best state feedback controller for the system is obtained by driving the ADP by

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Positive and Negative Sequence Current Controller"

1

Kapidou, Alexandra. "Application for Wind Farm Integration Complying with the Grid Code by Designing an Outer Control Strategy for the Converter." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187686.

Full text

Abstract:

The continuously increasing energy penetration from wind farms into the grid raises concerns regarding power quality and the stable operation of the power system. The Grid Code´s requirements give strict guidelines for a wind farm´s behaviour under faulty or abnormal operating conditions.The primary purpose of this project is the application of a STATCOM for wind farm integration complying with the Grid Code. Towards that, an outer control strategy for the converter is designed so as to regulate the voltage at the point of common coupling by providing reactive power compensation. Thus the safe

APA, Harvard, Vancouver, ISO, and other styles

2

Tománek, Miloslav. "Simulace účinků zkratových proudů v rozvodnách VVN." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217579.

Full text

Abstract:

This thesis is engaged in a theoretical calculation of short-circuit currents in electric power system in compliance with the norm ČSN 60909-0 and first of all with calculation of dynamical and thermal effects of short-circuit currents in HV switching stations in accordance with the norm ČSN 60865-1. Next the thesis is engaged in a production of programs for simulation of mechanical effects of short-circuit currents with respect to a dimensioning of constructional elements of switching station and afterwards in a practical simulation of selected parts of the real switching station type „H“ in

APA, Harvard, Vancouver, ISO, and other styles

3

Hsu, Che-Wei, and 許哲瑋. "Research of Low Voltage Ride-Through Strategies for Grid-Connected Converters Based on Positive Sequence and Negative Sequence Reactive Current Control." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/84714874914767954785.

Full text

Abstract:

碩士<br>國立清華大學<br>電機工程學系<br>98<br>With more and more distributed energy resources (DERs) being connected to the grid through interface converters, the utility requires the DER generation system to remain grid-connected during grid voltage imbalance to ensure the operating stability of the AC power system. These low voltage ride-through requirements also suggest that the DER generation system injects reactive power to support grid voltages. Traditional reactive power compensation methods can provide request reactive current to meet the low voltage ride-through requirements. However, the resulting

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Positive and Negative Sequence Current Controller"

1

Selvaganesan, N. "Fuzzy Based Modeling, Control, and Fault Diagnosis of Permanent Magnet Synchronous Generator." In Handbook of Research on Computational Intelligence for Engineering, Science, and Business. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2518-1.ch019.

Full text

Abstract:

This chapter presents the design methodology of fuzzy based modeling, control, and fault diagnosis of Permanent Magnet Synchronous Generator (PMSG) system. The fuzzy based modeling scheme for PMSG is developed using the general Takagi-Sugeno fuzzy model. Subsequently, fuzzy controller is designed and simulated to maintain three phase output voltage as constant by controlling the speed of generator. The feasibility of the fuzzy model and control scheme is demonstrated using various operating conditions by MATLAB simulation. Also, fuzzy based fault detection scheme for PMSG is developed and presented. The positive and negative sequence currents are used as fault indicators and given as inputs to fuzzy fault detector. The fuzzy inference system is created, and rule base is evaluated, relating the sequence current component to the type of faults. The feasibility of this scheme is demonstrated for different types of fault under various operating conditions using MATLAB/Simulink.

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Positive and Negative Sequence Current Controller"

1

Ali, Zunaib, Nicholas Chritofides, Lenos Hadjidemetriou, and Elias Kyriakides. "A computationally efficient current controller for simultaneous injection of both positive and negative sequences." In 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe). IEEE, 2017. http://dx.doi.org/10.23919/epe17ecceeurope.2017.8099011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Hailian Xie, L. Angquist, and H. P. Nee. "Novel flux modulated positive and negative sequence deadbeat current control of voltage source converters." In 2006 IEEE Power Engineering Society General Meeting. IEEE, 2006. http://dx.doi.org/10.1109/pes.2006.1709230.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Perez-Estevez, Diego, Jesus Doval-Gandoy, Alejandro G. Yepes, Oscar Lopez, and Fernando Baneira. "Positive- and negative-sequence current control based on direct discrete-time pole placement for grid-connected converters with LCL filter." In 2016 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2016. http://dx.doi.org/10.1109/ecce.2016.7855354.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Zhao, Fan, Delu Chen, Zhe Pu, and Jielu Wang. "A New Research Method for Corrosion Defect in Metal Pipeline by Using Pulsed Eddy Current." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21322.

Full text

Abstract:

Abstract Pulsed eddy current (PEC) is a new technique to distinguish corrosion defeats inside and outside the metal pipeline. In comparison with other eddy current techniques, the PEC technique has the advantage of being simple and high velocity. In this article, a brand-new PEC probe based on differential conductivity is established through the combination of modules like square wave generator, eddy current coil bridge, differential current, voltage sample circuits and so on. The 50% duty cycle square wave is used as the driving signal. To measure differential conductance, a coil bridge confi

APA, Harvard, Vancouver, ISO, and other styles

5

Nakatsuji, Makoto, and Sohei Okui. "Answer Generation through Unified Memories over Multiple Passages." In Twenty-Ninth International Joint Conference on Artificial Intelligence and Seventeenth Pacific Rim International Conference on Artificial Intelligence {IJCAI-PRICAI-20}. International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/ijcai.2020/529.

Full text

Abstract:

Machine reading comprehension methods that gen- erate answers by referring to multiple passages for a question have gained much attention in AI and NLP communities. The current methods, however, do not investigate the relationships among multi- ple passages in the answer generation process, even though topics correlated among the passages may be answer candidates. Our method, called neural answer Generation through Unified Memories over Multiple Passages (GUM-MP), solves this problem as follows. First, it determines which tokens in the passages are matched to the question. In particular, it in

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!