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Relevant bibliographies by topics / DC analysis; Small-signal modelling

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Academic literature on the topic 'DC analysis; Small-signal modelling'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "DC analysis; Small-signal modelling"

1

Huang, Yunhui, Aihong Tang, Binyu Xiong, Yong Huang, Haiyan Tang, and Yan Li. "Modelling of multi-VSCs in DC voltage control timescale for small-signal stability analysis." Journal of Engineering 2017, no. 13 (2017): 2057–61. http://dx.doi.org/10.1049/joe.2017.0691.

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Veerachary, Mummadi, Tomonobu Senjyu, and Katsumi Uezato. "Signal flow graph modelling and analysis of interleaved DC?DC parallel converters." International Journal of Electronics 88, no. 9 (2001): 1015–33. http://dx.doi.org/10.1080/00207210110063557.

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Granados-Luna, Teresa R., Ismael Araujo-Vargas, and Francisco J. Perez-Pinal. "Sample-Data Modeling of a Zero Voltage Transition DC-DC Converter for On-Board Battery Charger in EV." Mathematical Problems in Engineering 2014 (2014): 1–15. http://dx.doi.org/10.1155/2014/712360.

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Battery charger is a key device in electric and hybrid electric vehicles. On-board and off-board topologies are available in the market. Lightweight, small, high performance, and simple control are desired characteristics for on-board chargers. Moreover, isolated single-phase topologies are the most common system in Level 1 battery charger topologies. Following this trend, this paper proposes a sampled-data modelling strategy of a zero voltage transition (ZVT) DC-DC converter for an on-board battery charger. A piece-wise linear analysis of the converter is the basis of the technique presented such that a large-signal model and, therefore, a small-signal model of the converter are derived. Numerical and simulation results of a 250 W test rig validate the model.

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Han, Weijian, Ruiqing Ma, and Qing Liu. "Small-Signal Model for Dual Active Bridge Series Resonant DC-DC Converters with Variable-Frequency and Phase-Shift Modulation." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 4 (2019): 830–37. http://dx.doi.org/10.1051/jnwpu/20193740830.

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Variable frequency and phase shift modulation can achieve zero-voltage switching (ZVS) of dual active bridge series resonant DC-DC converters(DABSRCs) over a wide operating range so as to effectively improving system efficiency and reliability. In order to study the dynamics of DABSRCs and provide the basis for the closed-loop compensator design, a continuous-time small-signal model is proposed. The generalized average modelling approach is adopted, in which the DC component of the output voltage and the fundamental component of the inductor current and resonant capacitor voltage are selected as the state variables, precisely describing impacts of the resonance on the system dynamics. On the above-mentioned basis, a closed-loop compensator is designed, which achieves the stable operation with the ZVS variable frequency and phase shift modulation. The analysis results are verified by the simulation and experimental results.

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Zakzouk, Nahla E., Ahmed K. Khamis, Ahmed K. Abdelsalam, and Barry W. Williams. "Continuous-Input Continuous-Output Current Buck-Boost DC/DC Converters for Renewable Energy Applications: Modelling and Performance Assessment." Energies 12, no. 11 (2019): 2208. http://dx.doi.org/10.3390/en12112208.

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Stand-alone/grid connected renewable energy systems (RESs) require direct current (DC)/DC converters with continuous-input continuous-output current capabilities as maximum power point tracking (MPPT) converters. The continuous-input current feature minimizes the extracted power ripples while the continuous-output current offers non-pulsating power to the storage batteries/DC-link. CUK, D1 and D2 DC/DC converters are highly competitive candidates for this task especially because they share similar low-component count and functionality. Although these converters are of high resemblance, their performance assessment has not been previously compared. In this paper, a detailed comparison between the previously mentioned converters is carried out as several aspects should be addressed, mainly the converter tracking efficiency, conversion efficiency, inductor loss, system modelling, transient and steady-state performance. First, average model and dynamic analysis of the three converters are derived. Then, D1 and D2 small signal analysis in voltage-fed-mode is originated and compared to that of CUK in order to address the nature of converters’ response to small system changes. Finally, the effect of converters’ inductance variation on their performance is studied using rigorous simulation and experimental implementation under varying operating conditions. The assessment finally revels that D1 converter achieves the best overall efficiency with minimal inductor value.

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Li, Xiangkun, Weimin Wu, Houqing Wang, Ning Gao, Henry Shu-hung Chung, and Frede Blaabjerg. "A New Buck-Boost AC/DC Converter with Two-Terminal Output Voltage for DC Nano-Grid." Energies 12, no. 20 (2019): 3808. http://dx.doi.org/10.3390/en12203808.

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Due to the development and deployment of renewable DC power sources and their inherent advantages for DC loads in applications, the DC nano-grid has attracted more and more research attentions; especially the topologies of AC/DC converters are increasingly studied. When designing an AC to DC converter for a DC nano-grid system, the grounding configuration, which determines the costs, the efficiency as well as the safety, plays an important role. A three-terminal output AC to DC converter based on united grounding configuration has been presented for DC nano-grid. However, it has to be pointed out that the three-terminal output DC nano-grid is not as popular as the two-terminal DC output one, due to the infrastructure consideration. This paper proposes a new Buck-Boost AC to DC converter with two-terminal output voltage for DC nano-grid. The operating principle, the steady-state analysis, and the small signal modelling for the proposed converter working in continuous conduction mode are presented in detail. A 220 V/50 Hz/800 W prototype was fabricated to verify the effectiveness of the proposed converter.

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GOTODA, HIROSHI, and YUKO SASO. "UNSTEADY MOTION OF POOL FIRE ON SMALL-SCALE BURNER." International Journal of Bifurcation and Chaos 17, no. 06 (2007): 2185–93. http://dx.doi.org/10.1142/s0218127407018324.

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The flame motion of a pool fire on a small-scale burner has been experimentally investigated from the viewpoint of nonlinear dynamics, focusing on the relationship between the flame motion behavior and increasing burner diameter d. Hexane ( C 6 H 14) was used as a liquid fuel in the present study. For small burner diameters of up to d ≈ 10 mm , a stable conical flame was observed. The flame tip of the stable flame began to oscillate at low frequency (approximately 10 Hz) due to the buoyancy-driven hydrodynamic instability when d exceeded 13 mm. With further increase in d, the flame tip oscillation began to exhibit an interesting oscillation mode. These flame motions can be shown quantitatively by drawing an attractor, and evaluated by estimating the correlation dimension Dc. For d ≤ 10 mm , the attractor was a fixed point and Dc was approximately zero. When d reached 13 mm, the attractor became a limit cycle and Dc was estimated to be approximately unity, indicating a periodic motion. With larger burner diameters of up to d ≈ 50 mm , the trajectories of the attractor seemed to be rolled up and Dc approached approximately 2, indicating a quasi-periodic motion. These results indicate that the flame motion of the small-scale pool fire switches from stable to quasi-periodic, throughout periodic with increasing the burner diameter. The present results also show that a nonlinear analysis based on deterministic chaos theory, such as that using the attractor and the correlation dimension, would be a valid method by which to discuss the flame instability issue of the pool fire.

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Lenz, Eduardo, Daniel J. Pagano, and André P. N. Tahim. "Codimension-Two Bifurcation Analysis in DC Microgrids Under Droop Control." International Journal of Bifurcation and Chaos 26, no. 02 (2016): 1650028. http://dx.doi.org/10.1142/s0218127416500280.

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This paper addresses local and global bifurcations that may appear in electrical power systems, such as DC microgrids, which recently has attracted interest from the electrical engineering society. Most sources in these networks are voltage-type and operate in parallel. In such configuration, the basic technique for stabilizing the bus voltage is the so-called droop control. The main contribution of this work is a codimension-two bifurcation analysis of a small DC microgrid considering the droop control gain and the power processed by the load as bifurcation parameters. The codimension-two bifurcation set leads to practical rules for achieving a robust droop control design. Moreover, the bifurcation analysis also offers a better understanding of the dynamics involved in the problem and how to avoid possible instabilities. Simulation results are presented in order to illustrate the bifurcation analysis.

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ZHOU, YUFEI, CHI K. TSE, SHUI-SHENG QIU, and FRANCIS C. M. LAU. "APPLYING RESONANT PARAMETRIC PERTURBATION TO CONTROL CHAOS IN THE BUCK DC/DC CONVERTER WITH PHASE SHIFT AND FREQUENCY MISMATCH CONSIDERATIONS." International Journal of Bifurcation and Chaos 13, no. 11 (2003): 3459–71. http://dx.doi.org/10.1142/s0218127403008685.

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The buck converter has been known to exhibit chaotic behavior in a wide parameter range. In this paper, the resonant parametric perturbation method is applied to control chaos in a voltage-mode controlled buck converter. In particular, the effects of phase shift and frequency mismatch in the perturbing signal are studied. It is shown that the control power can be significantly reduced if the perturbation is applied with an appropriate phase shift. Moreover, when frequency mismatch is inevitable, intermittent chaos occurs, but effective control can still be accomplished at the expense of raising the control power. Analysis, simulations and experimental measurements are presented to provide theoretical and practical evidences for the proposed control method.

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Cao, Ping, Bailu Ye, Linghui Yang, et al. "Preprocessing Unevenly Sampled RR Interval Signals to Enhance Estimation of Heart Rate Deceleration and Acceleration Capacities in Discriminating Chronic Heart Failure Patients from Healthy Controls." Computational and Mathematical Methods in Medicine 2020 (March 31, 2020): 1–10. http://dx.doi.org/10.1155/2020/9763826.

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Objective. The deceleration capacity (DC) and acceleration capacity (AC) of heart rate, which are recently proposed variants to the heart rate variability, are calculated from unevenly sampled RR interval signals using phase-rectified signal averaging. Although uneven sampling of these signals compromises heart rate variability analyses, its effect on DC and AC analyses remains to be addressed. Approach. We assess preprocessing (i.e., interpolation and resampling) of RR interval signals on the diagnostic effect of DC and AC from simulation and clinical data. The simulation analysis synthesizes unevenly sampled RR interval signals with known frequency components to evaluate the preprocessing performance for frequency extraction. The clinical analysis compares the conventional DC and AC calculation with the calculation using preprocessed RR interval signals on 24-hour data acquired from normal subjects and chronic heart failure patients. Main Results. The assessment of frequency components in the RR intervals using wavelet analysis becomes more robust with preprocessing. Moreover, preprocessing improves the diagnostic ability based on DC and AC for chronic heart failure patients, with area under the receiver operating characteristic curve increasing from 0.920 to 0.942 for DC and from 0.818 to 0.923 for AC. Significance. Both the simulation and clinical analyses demonstrate that interpolation and resampling of unevenly sampled RR interval signals improve the performance of DC and AC, enabling the discrimination of CHF patients from healthy controls.

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Dissertations / Theses on the topic "DC analysis; Small-signal modelling"

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Szabo, Adrian. "The modelling of quasi-resonant and multi-resonant boost converters." Thesis, Nottingham Trent University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245100.

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Kotecha, Ramchandra M. "Analysis and Comparison of Popular Models for Current-Mode Control of Switch Mode Power Supplies." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1300211710.

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Kathi, Lokesh. "Small-Signal Analysis of Non-isolated Cuk DC-DC Converter." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1598899911848989.

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Lee, Julie JoAnn. "Analysis of a Small-Signal Model of a PWM DC-DC Buck-Boost Converter in CCM." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1187882268.

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Shoubaki, Ehab Hamed. "UNIFIED LARGE AND SMALL SIGNAL DISCRETE-SPACE MODELING FOR PWM CONVERTERS IN CCM." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3961.

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In this Thesis a Unified Discrete State-Space Model for power converters in CCM is presented. Two main approaches to arriving at the discrete model are used. The first approach involves an impulse function approximation of the duty cycle modulations of the converter switches , and this approach results in a small signal discrete model. The Second approach is direct and does not involve any approximation of the modulations , this approach yields both a large signal nonlinear discrete model and a linear small signal model. Harmonic analysis of the converter states at steady-state is done for steady-state waveform acquisition , which increases the accuracy of the model especially for finding the control to inductor current frequency response. Finally the Discrete model is verified for the Half-Bridge DC/DC topology for its three main control schemes (Asymmetric , Symmetric , DCS). A GUI platform in MATLAB is presented as a wrapper that utilizes the models and analysis presented in this thesis.<br>M.S.E.E.<br>Department of Electrical and Computer Engineering<br>Engineering and Computer Science<br>Electrical Engineering

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Simmons, Justin French. "Complete and Exact Small Signal Analysis of DC-to-DC Switched Power Converters Under Various Operating Modes and Control Methods." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/195.

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A method to obtain the exact control-to-output and input-to-output transfer functions for switched DC-to-DC pulse-width modulated power converters is applied to different combinations of operating conditions such as continuous conduction mode (CCM), discontinuous conduction mode (DCM), and discontinuous voltage mode (DVM) and methods of control such as normal voltage mode (NVM), current programming mode (CPM), and V-squared control. The majority of these combinations have not previously had their transfer functions of interest derived to the accuracy provided by the method. The derivation of the method is covered, and the results from its application are verified by simulation. The simulation method is also justied and proposed as an improvement to the methods used by simulation engines for switched mode power supply design such as SIMPLIS.

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Aree, Pichai. "Small-signal stability modelling and analysis of power systems with electronically controlled compensation." Thesis, University of Glasgow, 2000. http://theses.gla.ac.uk/2600/.

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Flexible AC Transmission Systems (FACTS) equipment is currently being incorporated into the power system for controlling key networks parameters aiming at improving the power system steady-state and dynamic performances. The vast array of power system analysis tools used by planners and system operators, on a daily basis, for the successful running of the network are to be upgraded to include comprehensive modelling for FACTS plant components. Commensurate with this global objective, this research work is aimed at developing comprehensive power system models of FACTS devices suitable for small-signal stability studies. The FACTS components covered in this research are the Static Var Compensator (SVC) and the Thyristor-Controlled Series Capacitor (TCSC). More specifically, the modelling of these devices combined with advanced modelling of synchronous generators has positioned the current work in the area of small-signal stability modelling and analysis of power systems with electronically controlled compensation. The work has been developed within the framework of the block-diagram methodology because it yields physical insight and offers the opportunity to gain fundamental knowledge of the dynamic interactions taking place between synchronous generators and FACTS plant components. The key issues of synchronous generator modelling, from the viewpoint of small-signal stability analysis, are addressed in this thesis. In particular, the impact of synchronous generator modelling order, with emphasis on system damping, is discussed in depth. Various representations of salient-pole synchronous generators are used to enable a variety of models suitable for small-signal stability studies. The models range from synchronous generators with no danger windings, to cases when one damper winding is included in each of the rotor axes, i.e. d and q-axis. The drive behind the study is to settle the issue of what is a suitable number of machine damper windings to be used in small-signal stability analysis that adequately represents the system model with a good level of reliability while keeping engineering complexity manageable.

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Demetriades, Georgios D. "On small-signal analysis and control of the single- and the dual-active bridge topologies." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153.

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Chadha, Ankit. "Tapped-Inductor Buck DC-DC Converter." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1578488939749599.

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Mei, Francoise. "Small-Signal Modelling and Analysis of Doubly-Fed Induction Generators in Wind Power Applications." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/4249.

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The worldwide demand for more diverse and greener energy supply has had a significant impact on the development of wind energy in the last decades. From 2 GW in 1990, the global installed capacity has now reached about 100 GW and is estimated to grow to 1000 GW by 2025. As wind power penetration increases, it is important to investigate its effect on the power system. Among the various technologies available for wind energy conversion, the doubly-fed induction generator (DFIG) is one of the preferred solutions because it offers the advantages of reduced mechanical stress and optimised power capture thanks to variable speed operation. This work presents the small-signal modelling and analysis of the DFIG for power system stability studies. This thesis starts by reviewing the mathematical models of wind turbines with DFIG convenient for power system studies. Different approaches proposed in the literature for the modelling of the turbine, drive-train, generator, rotor converter and external power system are discussed. It is shown that the flexibility of the drive train should be represented by a two-mass model in the presence of a gearbox. In the analysis part, the steady-state behaviour of the DFIG is examined. Comparison is made with the conventional synchronous generators (SG) and squirrel-cage induction generators to highlight the differences between the machines. The initialisation of the DFIG dynamic variables and other operating quantities is then discussed. Various methods are briefly reviewed and a step-by-step procedure is suggested to avoid the iterative computations in initial condition mentioned in the literature. The dynamical behaviour of the DFIG is studied with eigenvalue analysis. Modal analysis is performed for both open-loop and closed-loop situations. The effect of parameters and operating point variations on small signal stability is observed. For the open-loop DFIG, conditions on machine parameters are obtained to ensure stability of the system. For the closed-loop DFIG, it is shown that the generator electrical transients may be neglected once the converter controls are properly tuned. A tuning procedure is proposed and conditions on proportional gains are obtained for stable electrical dynamics. Finally, small-signal analysis of a multi-machine system with both SG and DFIG is performed. It is shown that there is no common mode to the two types of generators. The result confirms that the DFIG does not introduce negative damping to the system, however it is also shown that the overall effect of the DFIG on the power system stability depends on several structural factors and a general statement as to whether it improves or detriorates the oscillatory stability of a system can not be made.

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Books on the topic "DC analysis; Small-signal modelling"

1

Zhu, Daqun. Small-signal modelling and analysis of GTO based static VAr compensator, solid-state series capacitor, and static phase shifter. National Library of Canada = Bibliothèque nationale du Canada, 1993.

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Book chapters on the topic "DC analysis; Small-signal modelling"

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Wu, Keng C. "Small-Signal Stability Analysis." In Pulse Width Modulated DC-DC Converters. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-6021-0_6.

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Kislovski, André S., Richard Redl, and Nathan O. Sokal. "General Small-Signal, Low-Frequency Analysis of Switching Regulators." In Dynamic Analysis of Switching-Mode DC/DC Converters. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-7849-5_3.

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Zhang, Xiao-Ping, Christian Rehtanz, and Bikash Pal. "Modeling of Power Systems for Small Signal Stability Analysis with FACTS." In Flexible AC Transmission Systems: Modelling and Control. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28241-6_13.

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Cupelli, Marco, Antonino Riccobono, Markus Mirz, Mohsen Ferdowsi, and Antonello Monti. "Small-Signal Analysis of Cascaded Systems." In Modern Control of DC-Based Power Systems. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-813220-3.00002-8.

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D'Arco, Salvatore, Jef Beerten, and Jon Are Suul. "Eigenvalue-based analysis of small-signal dynamics and stability in DC grids." In Modeling, Operation, and Analysis of DC Grids. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-822101-3.00009-5.

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Kumar, Prabhat, and Amritesh Kumar. "Analysis and Design of a Parallel Switched-Inductor DC-DC Converter." In Computational Methodologies for Electrical and Electronics Engineers. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3327-7.ch008.

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This chapter proposes a switched inductor configuration-based non-isolated DC-DC converter with high voltage gain. The proposed converter has two output capacitors instead of a single output capacitor for voltage boosting capabilities. Enhancement of the output voltage with the addition of more number of switched inductor cells is also possible in this configuration. The most advantageous factor of this proposed converter is the use of low-voltage semiconductor devices as they don't require large heat sinks. The converter operation in the steady state is fully analyzed. In addition to that, for the purpose of stability analysis, the small signal model for the proposed converter has also been developed. The frequency response using the small-scale transfer function of the converter has also been done by employing MATLAB. A suitable controller with suitable parameters has also been designed to improve the overall stability of the DC-DC converter in consideration. The results obtained after simulation verifies the feasibility of the converter.

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Conference papers on the topic "DC analysis; Small-signal modelling"

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Renedo, J., L. Sigrist, A. Garcia-Cerrada, and L. Rouco. "Modelling of VSC-HVDC multi-terminal systems for small-signal angle stability analysis." In 15th IET International Conference on AC and DC Power Transmission (ACDC 2019). Institution of Engineering and Technology, 2019. http://dx.doi.org/10.1049/cp.2019.0046.

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Li, Danhui, Delong Shang, Fei Xia, and Alex Yakovlev. "Modelling Switched-Capacitor DC-DC Converters with Signal Transition Graphs." In 2018 15th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD). IEEE, 2018. http://dx.doi.org/10.1109/smacd.2018.8434869.

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Khamkar, Ashwini, and Dipti Dayaram Patil. "Arc Fault and Flash Signal Analysis of DC Distribution System sing Artificial Intelligence." In 2020 International Conference on Renewable Energy Integration into Smart Grids: A Multidisciplinary Approach to Technology Modelling and Simulation (ICREISG). IEEE, 2020. http://dx.doi.org/10.1109/icreisg49226.2020.9174379.

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Wood, A. R. "Small signal modelling of HVDC transmission systems." In Seventh International Conference on AC and DC Transmission. IEE, 2001. http://dx.doi.org/10.1049/cp:20010527.

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Hebala, Osama M., Ahmed A. Aboushady, Khaled H. Ahmed, Sam Burgess, and Radhakrishna Prabhu. "Generalized Small-Signal Modelling of Dual Active Bridge DC/DC Converter." In 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA). IEEE, 2018. http://dx.doi.org/10.1109/icrera.2018.8567014.

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Karimi, A., A. Pirayesh, T. S. Aghdam, and M. Ajalli. "DC micro grid small signal stability analysis." In 18th Electric Power Distribution Network Conference. IEEE, 2013. http://dx.doi.org/10.1109/epdc.2013.6565958.

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Seo, Gab-Su, and Hanh-Phuc Le. "Small-signal analysis of S-hybrid step-down DC-DC converter." In 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE, 2017. http://dx.doi.org/10.1109/compel.2017.8013337.

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Arunkumar, C. R., and Udaya Bhasker Manthati. "Design and Small Signal Modelling of Battery-Supercapacitor HESS for DC Microgrid." In TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON). IEEE, 2019. http://dx.doi.org/10.1109/tencon.2019.8929544.

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Masihuzzaman, Md, Syed Khursheed Alam, and Haroon Ashfaq. "Small signal analysis of current mode active-clamp ZVS dc-dc converters." In 2010 Power India. IEEE, 2010. http://dx.doi.org/10.1109/pedes.2010.5712420.

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Changli Shi, Tongzhen Wei, Qunhai Huo, Tongshuo Zhang, and Junqiang He. "The small signal stability analysis of dc distribution network." In 8th Renewable Power Generation Conference (RPG 2019). Institution of Engineering and Technology, 2019. http://dx.doi.org/10.1049/cp.2019.0474.

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Reports on the topic "DC analysis; Small-signal modelling"

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Simmons, Justin. Complete and Exact Small Signal Analysis of DC-to-DC Switched Power Converters Under Various Operating Modes and Control Methods. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.195.

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