Log in

Relevant bibliographies by topics / Method of Backward-Forward Sweep / Journal articles

To see the other types of publications on this topic, follow the link: Method of Backward-Forward Sweep.

Journal articles on the topic 'Method of Backward-Forward Sweep'

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 top 50 journal articles for your research on the topic 'Method of Backward-Forward Sweep.'

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.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Kim, Ho-Young, Ji-Soo Kim, Jin-Sol Song, Gwang-Su Shin, and Chul-Hwan Kim. "A Study on Development of Hosting Capacity Assessment Tool using Forward-Backward Sweep Method." Transactions of The Korean Institute of Electrical Engineers 70, no. 8 (2021): 1220–24. http://dx.doi.org/10.5370/kiee.2021.70.8.1220.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Teng, Jen-Hao, and Chuo-Yean Chang. "Backward/Forward Sweep-Based Harmonic Analysis Method for Distribution Systems." IEEE Transactions on Power Delivery 22, no. 3 (2007): 1665–72. http://dx.doi.org/10.1109/tpwrd.2007.899523.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

McAsey, Michael, Libin Mou, and Weimin Han. "Convergence of the forward-backward sweep method in optimal control." Computational Optimization and Applications 53, no. 1 (2012): 207–26. http://dx.doi.org/10.1007/s10589-011-9454-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Ouali, Saad, and Abdeljabbar Cherkaoui. "An Improved Backward/Forward Sweep Power Flow Method Based on a New Network Information Organization for Radial Distribution Systems." Journal of Electrical and Computer Engineering 2020 (January 17, 2020): 1–11. http://dx.doi.org/10.1155/2020/5643410.

Full text

Abstract:

This paper presents a load flow algorithm based on the backward/forward sweep principle, flexible with network topology changes, with an improvement in ensuring a minimum number of searching for connections between nodes in the calculation sequence in the forward and the backward sweep, by organizing the radial distribution system information into a main line and its derivations. The proposed load flow analysis is easy to implement and does not require the use of any complex renumbering of branches and nodes, or any matrix calculation, with the only use of linear equations based on Kirchhoff’s

APA, Harvard, Vancouver, ISO, and other styles

5

Mortezazadeh, Mohammad, and Liangzhu Leon Wang. "A high-order backward forward sweep interpolating algorithm for semi-Lagrangian method." International Journal for Numerical Methods in Fluids 84, no. 10 (2017): 584–97. http://dx.doi.org/10.1002/fld.4362.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Hameed, Faisal, Mohamed Al Hosani, and H. H. Zeineldin. "A Modified Backward/Forward Sweep Load Flow Method for Islanded Radial Microgrids." IEEE Transactions on Smart Grid 10, no. 1 (2019): 910–18. http://dx.doi.org/10.1109/tsg.2017.2754551.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Araujo, Leandro Ramos de, Débora Rosana Ribeiro Penido, Sandoval Carneiro Júnior, José Luiz Rezende Pereira, and Paulo Augusto Nepomuceno Garcia. "Comparisons between the three-phase current injection method and the forward/backward sweep method." International Journal of Electrical Power & Energy Systems 32, no. 7 (2010): 825–33. http://dx.doi.org/10.1016/j.ijepes.2010.01.020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Kodama, H., and M. Namba. "Unsteady Lifting Surface Theory for a Rotating Cascade of Swept Blades." Journal of Turbomachinery 112, no. 3 (1990): 411–17. http://dx.doi.org/10.1115/1.2927675.

Full text

Abstract:

A lifting surface theory is developed to predict the unsteady three-dimensional aerodynamic characteristics for a rotating subsonic annular cascade of swept blades. A discrete element method is used to solve the integral equation for the unsteady blade loading. Numerical examples are presented to demonstrate effects of the sweep on the blade flutter and on the acoustic field generated by interaction of rotating blades with a convected sinusoidal gust. It is found that increasing the sweep results in decrease of the aerodynamic work on vibrating blades and also remarkable reduction of the modal

APA, Harvard, Vancouver, ISO, and other styles

9

Duran-Quintero, Michel, John E. Candelo, and Jose Soto-Ortiz. "A modified backward/forward sweep-based method for reconfiguration of unbalanced distribution networks." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 1 (2019): 85. http://dx.doi.org/10.11591/ijece.v9i1.pp85-101.

Full text

Abstract:

<span lang="EN-US">A three-phase unbalanced power flow method can provide a more realistic scenario of how distribution networks operate. The backward/forward sweep-based power flow method </span><span lang="EN-AU">(BF-PF)</span><span lang="EN-US"> has been used for many years as an important computational tool to solve the power flow for unbalanced and radial power systems. However, some of the </span><span lang="EN-AU">few </span><span lang="EN-US">available research tools produce many errors when </span><span lang="EN-AU">the

APA, Harvard, Vancouver, ISO, and other styles

10

Shan, Peng. "Kinematic Analysis of 3-D Swept Shock Surfaces in Axial Flow Compressors." Journal of Turbomachinery 123, no. 3 (2000): 490–500. http://dx.doi.org/10.1115/1.1370159.

Full text

Abstract:

This paper is part II of a comprehensive study on the blade leading edge sweep/bend of supersonic and transonic axial compressors. The paper explores and analyzes the kinematic characteristic variables of three-dimensional (3-D) swept shock surfaces. In the research field studying the sweep aerodynamics of axial flow compressors and fans, many types of high loading swept blades are under intensive study. So, in both direct and inverse design methods and experimental validations, an accurate grasp of the sweep characteristic of the blade’s 3-D swept shock surface becomes of more concern than be

APA, Harvard, Vancouver, ISO, and other styles

11

Issicaba, Diego, and Jorge Coelho. "Evaluation of the Forward-Backward Sweep Load Flow Method using the Contraction Mapping Principle." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 6 (2016): 3229. http://dx.doi.org/10.11591/ijece.v6i6.11303.

Full text

Abstract:

<p>This paper presents an assessment of the forward-backward sweep load flow method to distribution system analysis. The method is formally assessed using fixed-point concepts and the contraction mapping theorem. The existence and uniqueness of the load flow feasible solution is supported by an alternative argument from those obtained in the literature. Also, the closed-form of the convergence rate of the method is deduced and the convergence dependence of loading is assessed. Finally, boundaries for error values per iteration between iterates and feasible solution are obtained. Theoreti

APA, Harvard, Vancouver, ISO, and other styles

12

Issicaba, Diego, and Jorge Coelho. "Evaluation of the Forward-Backward Sweep Load Flow Method using the Contraction Mapping Principle." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 6 (2016): 3229. http://dx.doi.org/10.11591/ijece.v6i6.pp3229-3237.

Full text

Abstract:

<p>This paper presents an assessment of the forward-backward sweep load flow method to distribution system analysis. The method is formally assessed using fixed-point concepts and the contraction mapping theorem. The existence and uniqueness of the load flow feasible solution is supported by an alternative argument from those obtained in the literature. Also, the closed-form of the convergence rate of the method is deduced and the convergence dependence of loading is assessed. Finally, boundaries for error values per iteration between iterates and feasible solution are obtained. Theoreti

APA, Harvard, Vancouver, ISO, and other styles

13

Siahaan, Yokhebert Natasya, Samuel Samuel, and Berlian Arswendo Adietya. "Analisa Bentuk Foil pada Kapal Hydrofoil Supported-Catamaran (Hysucat)." Jurnal Rekayasa Hijau 4, no. 3 (2020): 145–56. http://dx.doi.org/10.26760/jrh.v4i3.145-156.

Full text

Abstract:

ABSTRAKKapal katamaran yang terintegrasi dengan foil bertujuan untuk menghasilkan performance lebih baik. Hydrofoil Supported-Catamaran (Hysucat) merupakan kapal katamaran yang dirancang untuk kecepatan tinggi menggunakan foil. Penelitian ini dilakukan dengan pendekatan metode numerik untuk mempresentasikan aliran fluida menggunakan RANS (Reynolds-Averaged Navier-Stokes). Aliran fluida pada penelitian ini menggunakan dua fasa yaitu air dan udara untuk menganalisis hambatan dan gaya angkat kapal katamaran yang telah dimodifikasi menjadi hysucat. Hysucat pada penelitian ini dibedakan oleh tiga m

APA, Harvard, Vancouver, ISO, and other styles

14

anoj Gupta, Chitransh Shrivastava, M. "Review of Forward & Backward Sweep Method for Load Flow Analysis of Radial Distribution System." International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 04, no. 06 (2015): 5595–99. http://dx.doi.org/10.15662/ijareeie.2015.0406049.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Alinjak, Tomislav, Ivica Pavić, and Marinko Stojkov. "Improvement of backward/forward sweep power flow method by using modified breadth-first search strategy." IET Generation, Transmission & Distribution 11, no. 1 (2017): 102–9. http://dx.doi.org/10.1049/iet-gtd.2016.0566.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

K.Venkat Rao and Dr.K.RamaSudha. "Optimal Path Solution Using Dijkstra's Algorithm for Practical 21 bus system." International Journal for Modern Trends in Science and Technology 6, no. 12 (2021): 502–9. http://dx.doi.org/10.46501/ijmtst061296.

Full text

Abstract:

This paper presents the Shortest Path Finding algorithm to identify the optimal path for a distribution system during restoration using Dijkstra's method. The objective is to reduce the power losses and obtain an efficient restoration plan after an extensive outage of the system. The power losses of the distribution system are calculated using Forward-Backward sweep load flow method. The proposed method has been implemented for a practical 21 bus distribution system using MATLAB programming .

APA, Harvard, Vancouver, ISO, and other styles

17

Archundia-Aranda, I., and R. O. Mota-Palomino. "Harmonic Penetration Method for Radial Distribution Networks." International Journal of Emerging Electric Power Systems 15, no. 2 (2014): 111–17. http://dx.doi.org/10.1515/ijeeps-2013-0093.

Full text

Abstract:

Abstract This work presents a method for calculating harmonic voltages and currents in radial distribution networks. The proposed method is an extension of the backward/forward sweep method for load flow studies in distribution systems and as such preserves its good convergence characteristics besides of not requiring of any network matrix. The method was tested on an eight-node one-phase radial test feeder and results were similar to those that were obtained by the well-known current injection method. Also it was tested on a 2000-node network, showing this way that this is a more suitable met

APA, Harvard, Vancouver, ISO, and other styles

18

Bompard, E., E. Carpaneto, G. Chicco, and R. Napoli. "Convergence of the backward/forward sweep method for the load-flow analysis of radial distribution systems." International Journal of Electrical Power & Energy Systems 22, no. 7 (2000): 521–30. http://dx.doi.org/10.1016/s0142-0615(00)00009-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Cho, Donghyurn, and Seung Pil Kim. "Successive Backward Sweep Method for Orbit Transfer Augmented with Homotopy Algorithm." Journal of the Korean Society for Aeronautical & Space Sciences 44, no. 7 (2016): 620–28. http://dx.doi.org/10.5139/jksas.2016.44.7.620.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Kumar, Vipin, Shubham Swapnil, and V. R. Singh. "Adaptive Algorithm for Solving the Load Flow Problem in Distribution System." Journal of Intelligent Systems 27, no. 3 (2018): 377–91. http://dx.doi.org/10.1515/jisys-2016-0084.

Full text

Abstract:

Abstract This paper presents a fast and efficient method for load flow analysis of radial distribution networks. Here, an adaptive algorithm is proposed to analyze the load flow problem of distribution systems. An adaptive algorithm is the combination of backward/forward (BW/FW) sweep and cuckoo search (CS) algorithms. In the proposed method, the optimum load flow analysis of the radial distribution system is attained, while optimizing the voltage and current computation of the BW/FW sweep algorithm. Now, by the CS, the output voltage of the BW/FW sweep algorithm is compared with the standard

APA, Harvard, Vancouver, ISO, and other styles

21

Jiang, Feng Li, Zai Lin Piao, and Li Di Wang. "A New Backward/Forward Algorithm for Weakly Meshed Distribution Systems with Distributed Generation." Applied Mechanics and Materials 541-542 (March 2014): 1027–31. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.1027.

Full text

Abstract:

According to the analysis of the network topological structure, an improved backward/forward sweep algorithm was proposed. The algorithm can be applied for weakly meshed distribution systems with distributed generation (DG). The method developed an incidence matrixbranch current-bus current injection matrix. A meshed network was converted to a radial network by breaking the loops at the ending nodes of link branches. The mathematical models of DG were established as PV and PQ node. For PV nodes, this paper used a dummy node and dummy branch which inject reactive power to the specified node to

APA, Harvard, Vancouver, ISO, and other styles

22

Issicaba, Diego, and Jorge Coelho. "Rotational Load Flow Method for Radial Distribution Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (2016): 1344. http://dx.doi.org/10.11591/ijece.v6i3.10083.

Full text

Abstract:

This paper introduces a modified edition of classical Cespedes' load flow method to radial distribution system analysis. In the developed approach, a distribution network is modeled in different complex reference systems and reduced to a set of connected equivalent subnetworks, each without resistance, while graph topology and node voltage solution are preserved. Active power losses are then not dissipated in the modeled subnetworks and active power flows can be obtained as a consequence of radiality. Thus, the proposed method preprocesses a series of variable transformations concomitant to an

APA, Harvard, Vancouver, ISO, and other styles

23

Issicaba, Diego, and Jorge Coelho. "Rotational Load Flow Method for Radial Distribution Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (2016): 1344. http://dx.doi.org/10.11591/ijece.v6i3.pp1344-1352.

Full text

Abstract:

This paper introduces a modified edition of classical Cespedes' load flow method to radial distribution system analysis. In the developed approach, a distribution network is modeled in different complex reference systems and reduced to a set of connected equivalent subnetworks, each without resistance, while graph topology and node voltage solution are preserved. Active power losses are then not dissipated in the modeled subnetworks and active power flows can be obtained as a consequence of radiality. Thus, the proposed method preprocesses a series of variable transformations concomitant to an

APA, Harvard, Vancouver, ISO, and other styles

24

Rahmalia, Dinita, and Arif Rohmatullah. "Analisis Kestabilan dan Kontrol Optimal Model Penyebaran Penyakit Zika dari Gejala Dengue Menggunakan Forward Backward Sweep Method." Jurnal Ilmiah Soulmath : Jurnal Edukasi Pendidikan Matematika 7, no. 2 (2019): 159. http://dx.doi.org/10.25139/smj.v7i2.1953.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Rocha, Ednardo, Max Pimentel Filho, Melinda Cruz, Marcos Almeida, and Manoel Medeiros Júnior. "A New Linear State Estimator for Fault Location in Distribution Systems Based on Backward-Forward Currents Sweep." Energies 13, no. 11 (2020): 2692. http://dx.doi.org/10.3390/en13112692.

Full text

Abstract:

This paper presents a new linear state estimation model based on a current summation load flow method for three-phase distribution systems. The developed estimator may be applied to both the supervision of distribution systems under normal operating conditions and the fault location in cases of low and high impedance faults. Our studies were conducted using a real distribution feeder. For fault location analysis, the system was modeled using the ATP (alternative transient program) in order to emulate measurements of voltages and currents at the substation, and voltage magnitudes registered by

APA, Harvard, Vancouver, ISO, and other styles

26

Abdel-Akher, Mamdouh. "Voltage stability analysis of unbalanced distribution systems using backward/forward sweep load-flow analysis method with secant predictor." IET Generation, Transmission & Distribution 7, no. 3 (2013): 309–17. http://dx.doi.org/10.1049/iet-gtd.2012.0360.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Tapia-Tinoco, Guillermo, David Granados-Lieberman, David A. Rodriguez-Alejandro, Martin Valtierra-Rodriguez, and Arturo Garcia-Perez. "A Robust Electric Spring Model and Modified Backward Forward Solution Method for Microgrids with Distributed Generation." Mathematics 8, no. 8 (2020): 1326. http://dx.doi.org/10.3390/math8081326.

Full text

Abstract:

The electric spring (ES) is a contemporary device that has emerged as a viable alternative for solving problems associated with voltage and power stability in distributed generation-based smart grids (SG). In order to study the integration of ESs into the electrical network, the steady-state simulation models have been developed as an essential tool. Typically, these models require an equivalent electrical circuit of the in-test networks, which implies adding restrictions for its implementation in simulation software. These restrictions generate simplified models, limiting their application to

APA, Harvard, Vancouver, ISO, and other styles

28

Gianto, Rudy, and Purwoharjono Purwoharjono. "A new method to incorporate three-phase power transformer model into distribution system load flow analysis." International Journal of Applied Power Engineering (IJAPE) 10, no. 3 (2021): 262. http://dx.doi.org/10.11591/ijape.v10.i3.pp262-270.

Full text

Abstract:

This paper proposes a new and simple method to incorporate three-phase power transformer model into distribution system load flow (DSLF) analysis. The objective of the present work is to find a robust and efficient technique for modeling and integrating power transformer in the DSLF analysis. The proposed transformer model is derived based on nodal admittance matrix and formulated by using the symmetrical component theory. Load flow formulation in terms of branch currents and nodal voltages is also proposed in this paper to enable integrating the model into the DSLF analysis. Singularity that

APA, Harvard, Vancouver, ISO, and other styles

29

Asamoah, Joshua Kiddy K., Francis T. Oduro, Ebenezer Bonyah, and Baba Seidu. "Modelling of Rabies Transmission Dynamics Using Optimal Control Analysis." Journal of Applied Mathematics 2017 (2017): 1–23. http://dx.doi.org/10.1155/2017/2451237.

Full text

Abstract:

We examine an optimal way of eradicating rabies transmission from dogs into the human population, using preexposure prophylaxis (vaccination) and postexposure prophylaxis (treatment) due to public education. We obtain the disease-free equilibrium, the endemic equilibrium, the stability, and the sensitivity analysis of the optimal control model. Using the Latin hypercube sampling (LHS), the forward-backward sweep scheme and the fourth-order Range-Kutta numerical method predict that the global alliance for rabies control’s aim of working to eliminate deaths from canine rabies by 2030 is attainab

APA, Harvard, Vancouver, ISO, and other styles

30

Lin, Jiazhe, Rui Xu, and Liangchen Li. "Mittag–Leffler synchronization for impulsive fractional-order bidirectional associative memory neural networks via optimal linear feedback control." Nonlinear Analysis: Modelling and Control 26, no. 2 (2021): 207–26. http://dx.doi.org/10.15388/namc.2021.26.21203.

Full text

Abstract:

In this paper, we are concerned with the synchronization scheme for fractional-order bidirectional associative memory (BAM) neural networks, where both synaptic transmission delay and impulsive effect are considered. By constructing Lyapunov functional, sufficient conditions are established to ensure the Mittag–Leffler synchronization. Based on Pontryagin’s maximum principle with delay, time-dependent control gains are obtained, which minimize the accumulative errors within the limitation of actuator saturation during the Mittag–Leffler synchronization. Numerical simulations are carried out to

APA, Harvard, Vancouver, ISO, and other styles

31

Grisales-Noreña, L. F., O. D. Garzon-Rivera, C. A. Ramírez-Vanegas, O. D. Montoya, and C. A. Ramos-Paja. "Application of the backward/forward sweep method for solving the power flow problem in DC networks with radial structure." Journal of Physics: Conference Series 1448 (January 2020): 012012. http://dx.doi.org/10.1088/1742-6596/1448/1/012012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Kongjeen, Y., K. Bhumkittipich, N. Mithulananthan, I. S. Amiri, and P. Yupapin. "A modified backward and forward sweep method for microgrid load flow analysis under different electric vehicle load mathematical models." Electric Power Systems Research 168 (March 2019): 46–54. http://dx.doi.org/10.1016/j.epsr.2018.10.031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Kirthiga, M. Venkata, and S. Arul Daniel. "Computational Techniques for Autonomous Microgrid Load Flow Analysis." ISRN Power Engineering 2014 (May 11, 2014): 1–12. http://dx.doi.org/10.1155/2014/742171.

Full text

Abstract:

This paper attempts at developing simple, efficient, and fast converging load flow analysis techniques tailored to autonomous microgrids. Two modified backward forward sweep techniques have been developed in this work where the largest generator is chosen as slack generator, in the first method and all generator buses are modeled as slack buses in the second method. The second method incorporates the concept of distributed slack bus to update the real and reactive power generations in the microgrid. This paper has details on the development of these two methodologies and the efficacy of these

APA, Harvard, Vancouver, ISO, and other styles

34

Augugliaro, A., L. Dusonchet, S. Favuzza, M. G. Ippolito, and E. Riva Sanseverino. "A backward sweep method for power flow solution in distribution networks." International Journal of Electrical Power & Energy Systems 32, no. 4 (2010): 271–80. http://dx.doi.org/10.1016/j.ijepes.2009.09.007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Sedaghat, Mohammad, Esmaeel Rokrok, and Mohammad Bakhshipour. "A New DG Allocation Approach Based on Biogeography-Based Optimization with Considering Fuzzy Load Uncertainty." IAES International Journal of Artificial Intelligence (IJ-AI) 4, no. 3 (2015): 89. http://dx.doi.org/10.11591/ijai.v4.i3.pp89-96.

Full text

Abstract:

A new distributed generation placement method based on biogeography-based optimization (BBO) is investigated in this paper. A significant novelty of this study lies in considering fuzzy load uncertainty. For this purpose a fuzzy backward- forward sweep load flow is proposed. The main objectives of this study is minimizing power losses and improving voltage profile. A comparative study between optimal location and sizing under typical load condition and fuzzy load uncertainty is presented. To verify the efficiency of proposed BBO method, it is conducted on IEEE 33 bus distribution system, also

APA, Harvard, Vancouver, ISO, and other styles

36

Montoya, Oscar Danilo, Walter Gil-González, and Diego Armando Giral. "On the Matricial Formulation of Iterative Sweep Power Flow for Radial and Meshed Distribution Networks with Guarantee of Convergence." Applied Sciences 10, no. 17 (2020): 5802. http://dx.doi.org/10.3390/app10175802.

Full text

Abstract:

This paper presents a general formulation of the classical iterative-sweep power flow, which is widely known as the backward–forward method. This formulation is performed by a branch-to-node incidence matrix with the main advantage that this approach can be used with radial and meshed configurations. The convergence test is performed using the Banach fixed-point theorem while considering the dominant diagonal structure of the demand-to-demand admittance matrix. A numerical example is presented in tutorial form using the MATLAB interface, which aids beginners in understanding the basic concepts

APA, Harvard, Vancouver, ISO, and other styles

37

Okyere, Eric, Johnson De-Graft Ankamah, Anthony Kodzo Hunkpe, and Dorcas Mensah. "Deterministic Epidemic Models for Ebola Infection with Time-Dependent Controls." Discrete Dynamics in Nature and Society 2020 (July 4, 2020): 1–12. http://dx.doi.org/10.1155/2020/2823816.

Full text

Abstract:

In this paper, we have studied epidemiological models for Ebola infection using nonlinear ordinary differential equations and optimal control theory. We considered optimal control analysis of SIR and SEIR models for the deadly Ebola infection using vaccination, treatment, and educational campaign as time-dependent control functions. We have applied indirect methods to study existing deterministic optimal control epidemic models for Ebola virus disease. These methods in optimal control are based on Hamiltonian function and Pontryagin’s maximum principle to construct adjoint equations and optima

APA, Harvard, Vancouver, ISO, and other styles

38

Ju, Yuntao, Wenchuan Wu, and Boming Zhang. "Convergence problem in forward/backward sweep power flow method caused by non-positive-sequence impedance of distributed generators and its solution." International Journal of Electrical Power & Energy Systems 65 (February 2015): 463–66. http://dx.doi.org/10.1016/j.ijepes.2014.04.035.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Wang, Weimin, Qihang Li, Jinji Gao, Feng He, Tim Diamond, and Paul Allaire. "Rotordynamic Evaluation of Full Scale Rotor on Tilting Pad Bearings with 0.1 and 0.3 Preload." Shock and Vibration 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/314892.

Full text

Abstract:

A system identification method for rotating machinery stability evaluation is investigated based on sine sweep excitation testing with electromagnetic actuator. The traditional MIMO FRF is transformed into dFRF from real number field to complex field with a transformation matrix, eliminating the influence of forward and backward modal overlap and providing higher accuracy to identify rotor’s first forward modal parameters using the rational polynomial method. The modal parameters are acquired for stability estimation. Furthermore, two sets of bearing with preloads of 0.1 and 0.3 under both loa

APA, Harvard, Vancouver, ISO, and other styles

40

Petridis, Stefanos, Orestis Blanas, Dimitrios Rakopoulos, Fotis Stergiopoulos, Nikos Nikolopoulos, and Spyros Voutetakis. "An Efficient Backward/Forward Sweep Algorithm for Power Flow Analysis through a Novel Tree-Like Structure for Unbalanced Distribution Networks." Energies 14, no. 4 (2021): 897. http://dx.doi.org/10.3390/en14040897.

Full text

Abstract:

The increase of distributed energy resources (DERs) in low voltage (LV) distribution networks requires the ability to perform an accurate power flow analysis (PFA) in unbalanced systems. The characteristics of a well performing power flow algorithm are the production of accurate results, robustness and quick convergence. The current study proposes an improvement to an already used backward-forward sweep (BFS) power flow algorithm for unbalanced three-phase distribution networks. The proposed power flow algorithm can be implemented in large systems producing accurate results in a small amount o

APA, Harvard, Vancouver, ISO, and other styles

41

Sharp, Jesse A., Kevin Burrage, and Matthew J. Simpson. "Implementation and acceleration of optimal control for systems biology." Journal of The Royal Society Interface 18, no. 181 (2021): 20210241. http://dx.doi.org/10.1098/rsif.2021.0241.

Full text

Abstract:

Optimal control theory provides insight into complex resource allocation decisions. The forward–backward sweep method (FBSM) is an iterative technique commonly implemented to solve two-point boundary value problems arising from the application of Pontryagin’s maximum principle (PMP) in optimal control. The FBSM is popular in systems biology as it scales well with system size and is straightforward to implement. In this review, we discuss the PMP approach to optimal control and the implementation of the FBSM. By conceptualizing the FBSM as a fixed point iteration process, we leverage and adapt

APA, Harvard, Vancouver, ISO, and other styles

42

Legha, Mahdi, Hassan Javaheri, and Mohammad Legha. "Optimal Conductor Selection in Radial Distribution Systems for Productivity Improvement Using Genetic Algorithm." Iraqi Journal for Electrical and Electronic Engineering 9, no. 1 (2013): 29–35. http://dx.doi.org/10.37917/ijeee.9.1.3.

Full text

Abstract:

Development of distribution systems result in higher system losses and poor voltage regulation. Consequently, an efficient and effective distribution system has become more urgent and important. Hence proper selection of conductors in the distribution system is important as it determines the current density and the resistance of the line. This paper examines the use of different evolutionary algorithms, genetic algorithm (GA), to optimal branch conductor selection in planning radial distribution systems with the objective to minimize the overall cost of annual energy losses and depreciation on

APA, Harvard, Vancouver, ISO, and other styles

43

Samsir, Andi Utari, Syamsuddin Toaha, and Kasbawati Kasbawati. "Optimal Control of a Mathematical Model of Smoking with Temporary Quitters and Permanent Quitters." Jurnal Matematika, Statistika dan Komputasi 18, no. 1 (2021): 42–54. http://dx.doi.org/10.20956/j.v18i1.13974.

Full text

Abstract:

Abstract This article discusses the optimal control of a mathematical model on smoking. This model consists of six population classes, namely potential to become smoker snuffing class irregular smokers regular smokers temporary quitters and permanent quitters The completion of this research uses the Pontryagin minimum principle and numerically using the forward-backward Sweep method. Numerical simulations of the optimal problem show that with the implementation of education campaigns and anti-nicotine medicine, the smokers can be decreased more quickly and the smoking population who quit perma

APA, Harvard, Vancouver, ISO, and other styles

44

Lin, Qi Feng, and Jin Hua Teng. "Application Research of Sweep Frequency in GMI Test." Advanced Materials Research 816-817 (September 2013): 285–88. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.285.

Full text

Abstract:

Because of inefficiency of many tests needed in GMI research, this paper put forward the sweep frequency measurement method to implement the measurement of GMI effect under multi frequency at the same time in a single test. Experiments proved that the GMI effect curves which are measured by the sweep measurement method are consistent with other method's results, and the sweep frequency measurement method can greatly reduce the time of GMI test and improving the efficiency of the test.

APA, Harvard, Vancouver, ISO, and other styles

45

DARAJAT, PANGESTUTI PRIMA, and TYAS HUSADANINGSIH. "KONTROL OPTIMAL PADA MODEL PENYEBARAN VIRUS KOMPUTER DENGAN KLASIFIKASI PENGAMANAN." E-Jurnal Matematika 8, no. 4 (2019): 253. http://dx.doi.org/10.24843/mtk.2019.v08.i04.p261.

Full text

Abstract:

In this paper, a model of the spread of computer viruses with security classification and nonlinear infection rates is formulated. From the short analysis, is found that the model does not have a virus-free equilibrium point. This show that the virus will always exist in the system and increasingly that can not be avoided. Therefore, control strategy by installing antivirus on subpopulation susceptible low-security level and infective subpopulation aims to minimize the number of infective computers, and minimize the cost related to these strategies. Hence, an important tool, in this case is, o

APA, Harvard, Vancouver, ISO, and other styles

46

Bouketir, Omrane, Haddi Sebaa, and Tarek Bouktir. "Optimal Integration of Distributed Generation in a Radial Distribution System Using BW/FW Sweep and PSO Algorithm." Advanced Engineering Forum 35 (February 2020): 94–101. http://dx.doi.org/10.4028/www.scientific.net/aef.35.94.

Full text

Abstract:

Installation of distributed generations (DGs) could be an effective solution to the problem of shortage of the electric energy especially in populated areas. Installation of DG in non-suitable places can result in more energy losses and voltage instability which leads to higher operating cost. DGs should be placed optimally in the network to get maximum efficiency of the system. This paper presents a new method to solve the optimal sizing and placement of DGs with the aim of minimizing real power loss and improving voltage profile in a distribution system. A power flow technique based on Backw

APA, Harvard, Vancouver, ISO, and other styles

47

Aziz, M. A., Farouk M. Owis, and M. M. Abdelrahman. "Design Optimization of a Transonic-Fan Rotor Using Numerical Computations of the Full Compressible Navier-Stokes Equations and Simplex Algorithm." International Journal of Rotating Machinery 2014 (2014): 1–16. http://dx.doi.org/10.1155/2014/743154.

Full text

Abstract:

The design of a transonic-fan rotor is optimized using numerical computations of the full three-dimensional Navier-Stokes equations. The CFDRC-ACE multiphysics module, which is a pressure-based solver, is used for the numerical simulation. The code is coupled with simplex optimization algorithm. The optimization process is started from a suitable design point obtained using low fidelity analytical methods that is based on experimental correlations for the pressure losses and blade deviation angle. The fan blade shape is defined by its stacking line and airfoil shape which are considered the op

APA, Harvard, Vancouver, ISO, and other styles

48

El Bhih, Amine, Rachid Ghazzali, Soukaina Ben Rhila, Mostafa Rachik, and Adil El Alami Laaroussi. "A Discrete Mathematical Modeling and Optimal Control of the Rumor Propagation in Online Social Network." Discrete Dynamics in Nature and Society 2020 (May 1, 2020): 1–12. http://dx.doi.org/10.1155/2020/4386476.

Full text

Abstract:

In this paper, a new rumor spreading model in social networks has been investigated. We propose a new version primarily based on the cholera model in order to take into account the expert pages specialized in the dissemination of rumors from an existing IRCSS model. In the second part, we recommend an optimal control strategy to fight against the spread of the rumor, and the study aims at characterizing the three optimal controls which minimize the number of spreader users, fake pages, and corresponding costs; theoretically, we have proved the existence of optimal controls, and we have given a

APA, Harvard, Vancouver, ISO, and other styles

49

Panigrahi, B., and G. Pohit. "Amplitude Incremental Method: A Novel Approach to Capture Stable and Unstable Solutions of Harmonically Excited Vibration Response of Functionally Graded Beams under Large Amplitude Motion." International Journal of Nonlinear Sciences and Numerical Simulation 20, no. 5 (2019): 581–94. http://dx.doi.org/10.1515/ijnsns-2018-0235.

Full text

Abstract:

AbstractAn interesting phenomenon is observed while conducting numerical simulation of non-linear dynamic response of FGM (functionally graded material) beam having large amplitude motion under harmonic excitation. Instead of providing a frequency sweep (forward or backward), if amplitude is incremented and response frequency is searched for a particular amplitude of vibration, solution domain can be enhanced and stable as well as unstable solution can be obtained. In the present work, first non-linear differential equations of motion for large amplitude vibration of a beam, which are obtained

APA, Harvard, Vancouver, ISO, and other styles

50

Huang, Yanlu, Yan Li, Feng Chen, Xu Zheng, and Jing Tang. "A Modified Back/Forward Sweep Method Based on the Electricity Consumption Data." Energy and Power Engineering 09, no. 04 (2017): 176–82. http://dx.doi.org/10.4236/epe.2017.94b021.

Full text

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!