Relevant bibliographies by topics / Fixed frequency hysteretic control

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Fixed frequency hysteretic control'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Fixed frequency hysteretic control"

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Awrejcewicz, J., and L. Dzyubak. "Modeling, chaotic behavior, and control of dissipation properties of hysteretic systems." Mathematical Problems in Engineering 2006 (2006): 1–21. http://dx.doi.org/10.1155/mpe/2006/94929.

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In the present work, hysteresis is simulated by means of internal variables. Analytical models of different types of hysteresis loops enable reproduction of major and minor loops and provide good agreement with experimental data. Using an effective algorithm based on the analysis of wandering trajectories, an evolution of chaotic behavior regions of oscillators with hysteresis is presented in various parametric planes. A substantial influence of a hysteretic dissipation value on the form and location of these regions and also restraining and generating effects of the hysteretic dissipation on chaos occurrence are shown. It was demonstrated that for fixed parameters, which govern the shape of a hysteresis loop, the extent of pinch of this loop could be controlled by means of the amplitude and frequency of external periodic excitation.
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Song, Qing Shou. "A Hysteretic Current Controller for Active Power Filter (APF) with Constant Frequency." Advanced Materials Research 460 (February 2012): 308–12. http://dx.doi.org/10.4028/www.scientific.net/amr.460.308.

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In accordance with the advantage of conventional hysteresis current control method, this paper advances a novel control method for APF. In conventional hysteresis current control, the hysteresis band (HB) is fixed and actual compensating current is limited in a fixed HB. Firstly, the connection between HB and switching frequency must be found correctly. Then, the variable hysteresis band current controller is designed according to the connection. Finally, the Matlab simulation results show that the switching frequency of VSI is held nearly constant and the proposed controller can track reference current well[1]. The problems of increasing switching losses and audible noise which happened in high-frequency state can be resolved in conventional hysteresis current control.
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Zhang, Jun Li, Jian Zhuo Li, and Yu Ren Zhang. "Fixed Frequency Hysteresis Control Based STATCOM." Advanced Materials Research 383-390 (November 2011): 5936–39. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5936.

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The operation principle of STATCOM (Synchronous Static Compensator - STATCOM) is analyzed. To improve STATCOM response speed, and to sustain the STATCOM main circuit switching device operating frequency stability, the direct current control method is introduced. Fixed frequency hysteresis control method based on the traditional hysteresis control strategy is proposed. The proposed strategy is simple, high precision, fast response speed, while it has less fluctuation with the impact of load parameters, and good robust characteristics.
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Sabaghi, Masoud, Mohsen Dashtbayazi, and Saeid Marjani. "Dynamic Hysteresis Band Fixed Frequency Current Control." World Applied Programming 6, no. 1 (March 1, 2016): 1–4. http://dx.doi.org/10.21828/wap-06-01-001.

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Sabaghi, Masoud, Mohsen Dashtbayazi, and Saeid Marjani. "Dynamic Hysteresis Band Fixed Frequency Current Control." World Applied Programming 6, no. 1 (March 1, 2016): 1–4. http://dx.doi.org/10.21828/wap0601.001.

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Jia, Meng, Zhuochao Sun, and Liter Siek. "Fixed-frequency hysteretic buck converter with novel adaptive window control and transient response improvement." Journal of Engineering 2019, no. 7 (July 1, 2019): 4667–71. http://dx.doi.org/10.1049/joe.2018.5293.

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Hoyerby, Mikkel C. W., and Michael A. E. Andersen. "Ultrafast Tracking Power Supply With Fourth-Order Output Filter and Fixed-Frequency Hysteretic Control." IEEE Transactions on Power Electronics 23, no. 5 (September 2008): 2387–98. http://dx.doi.org/10.1109/tpel.2008.2002038.

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Zhang, Shuguang, Wenku Shi, and Zhiyong Chen. "Modeling and Parameter Identification of MR Damper considering Excitation Characteristics and Current." Shock and Vibration 2021 (April 7, 2021): 1–17. http://dx.doi.org/10.1155/2021/6691650.

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Smart structures such as damping adjustable dampers made of magnetorheological (MR) fluid can be used to attenuate vibration transmission in vehicle seat suspension. The main research content of this paper is the nonlinearity and hysteresis characteristics of the MR damper. A hysteretic model considering both excitation characteristics and input current is proposed to fit the damper force-velocity curve for the MR damper under different conditions. Multifactor sensitivity analysis based on the neural network method is used to obtain importance parameters of the hyperbolic tangent model. In order to demonstrate the fitting precision of the different models, the shuffled frog-leaping algorithm (SFLA) is employed to identify the parameters of MR damper models. The research results indicate that the modified model can not only describe the nonlinear hysteretic behavior of the MR damper more accurately in fixed conditions, compared with the original model, but also meet the fitting precision under a wide range of magnitudes of control current and excitation conditions (frequency and amplitude). The method of parameter sensitivity analysis and identification can also be used to modify other nonlinear dynamic models.
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Hu, Kai-Yu, Shih-Mei Lin, and Chien-Hung Tsai. "A Fixed-Frequency Quasi-${\rm V}^{2}$ Hysteretic Buck Converter With PLL-Based Two-Stage Adaptive Window Control." IEEE Transactions on Circuits and Systems I: Regular Papers 62, no. 10 (October 2015): 2565–73. http://dx.doi.org/10.1109/tcsi.2015.2466791.

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Su, Feng, Wing-Hung Ki, and Chi-Ying Tsui. "Ultra Fast Fixed-Frequency Hysteretic Buck Converter With Maximum Charging Current Control and Adaptive Delay Compensation for DVS Applications." IEEE Journal of Solid-State Circuits 43, no. 4 (April 2008): 815–22. http://dx.doi.org/10.1109/jssc.2008.917533.

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Dissertations / Theses on the topic "Fixed frequency hysteretic control"

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Repecho, del Corral Víctor. "Fixed-switching frequency sliding mode control applied to power converters." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/462164.

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The application of the sliding mode control in power converters has a well-known inconvenient from the practical point of view, which is to obtain fixed switching frequency implementations. This thesis deals with the development of a hysteresis band controller in charge of fixing the switching frequency of a sliding motion in power electronics applications. The proposed control measures the switching period of the control signal and modifies the hysteresis band of the comparator in order to regulate the switching frequency of the sliding motion. The proposed structure becomes in an additional control loop aside from main control loop implementing the sliding mode controller. In the first part of the thesis, the switching frequency control system is modelled and a design criteria for the control parameters are derived for guaranteeing closed loop stability, under different approaches and taking into account the most expectable working scenarios. In the second part of the thesis, the proposed strategies are applied to several power converters prototypes. Specifically, DC-to-DC and DC-to-AC power converters are built and the experimental results are shown. In this part, the strategies used for implementing the controllers are also deeply discussed.
La aplicación del control en modo deslizante en el ámbito de la electrónica de potencia presente una problemática ampliamente conocida, obtener aplicaciones a frecuencia fija de operación. Es esta tesis se estudia el desarrollo de un comparador con histéresis variable encargado de regular el periodo de conmutación de controladores bajo regímenes deslizantes en convertidores de potencia. La estructura propuesta mide el periodo de conmutación de la señal de control y actualiza, de manera adecuada, la banda de histéresis del comparador a tal fin de regular la frecuencia de conmutación al valor deseado. La solución propuesta forma un segundo lazo de control, además del lazo de control principal que implementa el controlador en modo deslizante. En la primera parte de la tesis, éste segundo lazo es modelado, haciendo posible el estudio de las condiciones de estabilidad bajo realizaciones en tiempo continuo y en tiempo discreto. Además, se estudian las condiciones típicas de trabajo de los controladores utilizados en convertidores de potencia, como son los esquemas de regulación y de seguimiento de señales variantes en el tiempo. La segunda parte de la tesis se centra en evaluar, de manera experimental, los desarrollos teóricos de los controladores propuestos en convertidores de potencia. Concretamente, en la tesis se presentan los resultados experimentales obtenidos con diversos convertidores DC-DC y DC-AC. Adicionalmente, las metodologías y técnicas de implementación de los controladores son, de igual modo, ampliamente descritas.
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Shih-MeiLin and 林詩梅. "Fast-Response Buck Converters with Current-Mode and Fixed-Frequency Hysteretic Control." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/56035144191444572790.

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碩士
國立成功大學
電機工程學系
102
This thesis is about the fixed-frequency fast-transient regulator. Based on control methods, the thesis can be divided into two parts: The first part focuses on the fast transient current-mode controlled buck converter. Through the systematic design procedure and analysis including the system modeling, compensator design, transistor level design, and chip implementation, the loop response is improved for better dynamic response. The design procedure is verified by the chip’s measurement results. The measurement results show that this converter can operate with load current from 200mA to 500mA in a supply voltage from 2.7 to 4.2V and the output voltage of 1.8V. The recovery time is about 10us and the highest efficiency is 93%. By the frequency domain measurement, the stability of proposed buck converter can be guaranteed. This converter is designed and fabricated with TSMC 2P4M 0.35μm CMOS process. The off chip inductor and the output capacitor are 4.7μH and 10μF. In the second part of this thesis, a fast transient quasi-V2 fixed-frequency hysteretic buck converter with wide load current range is proposed. This converter uses the phase-locked loop through the proposed Two Stage Window Control Circuit to stabilize the switching frequency. Under ultra-light load condition, this converter operates in PFM mode to reduce the switching loss and improve the light load efficiency. By the quasi-V2 technique, the inductor current information can be obtained without relying on large ESR of output capacitor to reduce the output ripple. This converter has been designed and fabricated by TSMC 2P4M 0.35μm CMOS process. The off chip inductor and the output capacitor are 2.2μH and 10uF. The measurement results show that this converter can operate with load current from 18mA-700mA in a supply voltage from 3.3-3.9V, and the output voltage of 1.2V. With the PLL, the switching frequency is maintained constant at 1MHz. The transient response time is about 5us and the highest efficiency is 95.6%.
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Khan, Qadeer Ahmad. "Digitally assisted control techniques for high performance switching DC-DC converters." Thesis, 2012. http://hdl.handle.net/1957/30174.

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Digitally controlled switching DC-DC converters have recently emerged as an attractive alternative to conventional switching converters based on analog control techniques. This research focuses on eliminating the issues associated with the state of the art switching converters by proposing three novel control techniques: (1) a digitally controlled Buck-Boost converter uses a fully synthesized constant ON/OFF time-based fractional-N controller to regulate the output over a 3.3V-to-5.5V input voltage range and provides seamless transition from buck to buck-boost modes (2) a hysteretic buck converter that employs a highly digital hybrid voltage/current mode control to regulate output voltage and switching frequency independently (3) a 10MHz continuous time PID controller using time based signal processing which alleviates the speed limitations associated with conventional analog and digital. All the three techniques employ digitally assisted control techniques and require no external compensation thus making the controllers fully integrated and highly cost effective.
Graduation date: 2013
Access restricted to the OSU Community at author's request from June 25, 2012 - June 25, 2014
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Hung-ChiehHou and 侯宏杰. "Fixed Frequency Hysteretic Controlled Buck Converter Using Differential and Near-Time-Optimal Techniques." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/g66j7u.

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碩士
國立成功大學
電機工程學系
106
This thesis proposes a capacitor-current based fixed frequency hysteretic controlled buck converter using near-optimum technique. To reduce the dependence on the equivalent series resistor (ESR) of output capacitor as well as power consumption while detecting the current information, the current is obtained from a derivative circuit which samples the output voltage. To decrease steady-state error, the error amplifier obtains error signal between the output voltage and reference voltage to adjust DC offset of output voltage. To stabilize the operation frequency in steady state, the derived ramp signal is adopted to refine the upper side of the hysteretic band. During load transient, the designed gain of error signal can decrease the overshoot and undershoot of output voltage and settling time. Testing results show that the designed circuit can restrict the switching frequency around 1MHz. The recovery time is less than 4µs for the 750mA load transient. The maximum efficiency of 92.5% is obtained at 150mA output current, while the maximum output current is 900mA.
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"Fixed-frequency multi-mode multiple-output arbitrary-type DC-DC switching-mode power converters with variable-frequency control." Thesis, 2010. http://library.cuhk.edu.hk/record=b6075258.

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Finally, a four-channel SIMO converter with direct combination but optimal switching sequence for arbitrary converter sequence and converter type is presented. The theoretical optimal 1st-order inductor waveform from this proposed control algorithm is introduced. FCL is involved in this design to realize the algorithm. Moreover, a current-modulated ramp signal, which couples to different controllers, is included to compensate the original deep correlated power stages. By using all of the proposed techniques, Measurement results show that both conduction loss and dynamic loss can be suppressed because of the optimized switching sequence. The load transient response time is around 100mus. The peak efficiency is 89% with a 2.5-V power supply. A maximum output power of 1.66W can be achieved.
Firstly, a pseudo-PWM hysteresis voltage-mode buck converter is proposed. It achieves fast transient speed by the hysteresis control, estimable switching spectrum with a locking frequency and fast mode switching between PWM and PFM depending on the loading change. Measurement results show that the recovery time under the load transient is around 5mus, which is 5 times of the switching period. The boundary of the recovery time is defined by the value of the off-chip inductor.
Switching-mode power converter (SMPC) is an important circuit block in electronic systems. In the modem SMPC system, constant frequency voltage or current-mode control technique is commonly used. However, some limitations are raised due to some preliminary settings in the design. In this thesis, the switching frequency or period is no longer a constant but a design variable. Then, an additional frequency-control loop (FCL) is introduced in order to obtain a fixed frequency operation in the steady state. Three individual designs implemented with different types of FCL are proposed to verify the concept.
Then, a four-channel SIMO converter based on FCL is developed, together with auto-phase allocation technique. This circuit not only solves the problem of imbalance loading of different channels, but it also keeps the idle period of the inductor sufficient short in the full operation region. By combining with all channel controllers, FCL makes fast load transient response without degrading the power efficiency. Moreover, linear auto converter-type adaption technique is also used, which makes the converter surviving from a wide input range and output range. Measurement results show that the proposed converter can achieve a peak efficiency of 89%, a total output power of 1.46W, a load transient response time of less than 70muS, and an idle inductor period of <10%.
Zheng, Yanqi.
Adviser: Leung Ka Nang.
Source: Dissertation Abstracts International, Volume: 73-03, Section: B, page: .
Thesis (Ph.D.)--Chinese University of Hong Kong, 2010.
Includes bibliographical references.
Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
Abstract also in Chinese.
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Book chapters on the topic "Fixed frequency hysteretic control"

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Guo, Zhiqiang, and Deshang Sha. "An Isolated Micro-converter Utilizing Fixed-Frequency BCM Control Method for PV Applications." In New Topologies and Modulation Schemes for Soft-Switching Isolated DC–DC Converters, 169–91. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9934-4_8.

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Kai, Li, Li Jianbing, Zhou Dongfang, and Kai Zheng. "Fixed-Frequency Sliding Mode Control of Buck Converter Based on Differential Geometry Theory." In Proceedings of the 2015 International Conference on Communications, Signal Processing, and Systems, 843–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49831-6_87.

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Woafo, Paul, and Abobda Theodore Lejuste. "Modeling, Mathematical and Numerical Studies of a New Biventricular Model for Artificial Heart Powered by an Electromagnet Subjected to Sinusoidal and Square Voltages." In Biomedical Engineering, 172–98. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3158-6.ch007.

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This paper describes and investigates the dynamics of a new model of biventricular model for artificial heart which consists of two ferromagnetic masses fixed on springs and subjected to a common electromagnet powered by sinusoidal and square wave voltage sources. The effects of the following control parameters are considered: the external voltage source frequency and amplitude, the ratio between the stiffness coefficients, and the one between the masses. As results in both cases of external excitations, subharmonic oscillations, hysteresis, coexistence of limit cycle and point attractor, permanent bounding are found. The optimal voltage and the ratio between the stiffness coefficients are obtained. Bursting oscillations usable for pulsatile pumping are observed for low frequencies under square wave voltage.
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Stubberud, Peter A., and Cornelius T. Leondes. "Fixed Point Roundoff Effects in Frequency Sampling Filters." In Control and Dynamic Systems, 211–58. Elsevier, 1996. http://dx.doi.org/10.1016/s0090-5267(96)80042-9.

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"Appendix B: Fixed-Point Arithmetic and HDL Coding." In Digital Control of High-Frequency Switched-Mode Power Converters, 291–312. Hoboken, NJ, USA: John Wiley & Sons, Inc, 2015. http://dx.doi.org/10.1002/9781119025498.app2.

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Lei, Xiaoyan, Xinya Zhang, and Kun Luo. "Application Research of TMD on Low Frequency Vibration Control of Track Box Girder Structure." In Advances in Transdisciplinary Engineering. IOS Press, 2020. http://dx.doi.org/10.3233/atde200213.

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Vibration and noise problems of elevated track bridge structures are becoming increasingly prominent. In order to effectively control the low-frequency vibration response of the track box girder structure. Firstly, the controlled mode is confirmed through modal analysis of the box girder. The optimal stiffness, damping and attaching position of the tuned mass dampers are obtained based on the fixed-point theory and the identification method of equivalent quality for multi-degree-of-freedom system. Then, based on the vehicle-track-bridge coupling dynamic model, the control effectiveness of tuned mass dampers to low-frequency vibration of the track box girder structure under train moving load is discussed. The results show that the reasonable multi-mode modal tuned mass dampers combination can effectively suppress the low-frequency vibrations of the box-girder, and the vibration levels in the frequency bands 5–10 Hz and 20–31.5 Hz near the natural frequency are significantly reduced.
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"Indirect Power Control (IDPC) of DFIG Using Classical & Adaptive Controllers Under MPPT Strategy." In Improved Indirect Power Control (IDPC) of Wind Energy Conversion Systems (WECS), edited by Fayssal Amrane and Azeddine Chaiba, 26–85. BENTHAM SCIENCE PUBLISHERS, 2019. http://dx.doi.org/10.2174/9789811412677119010005.

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In this chapter, we present a comparative study of conventional Indirect Power Control (IDPC) algorithm of DFIG-Wind turbine in grid-connection mode, using PI and PID controllers via Maximum power point tracking (MPPT) strategy. Firstly, the conventional IDPC based on PI controllers will be described using simplified model of DFIG through stator flux orientation and wind-turbine model. The MPPT strategy is developed using Matlab/Simulink® with two wind speed profiles in order to ensure the robustness of wind-system by maintaining the Power coefficient (Cp) at maximum value and reactive power at zero level; regardless unexpectedF wind speed variation. Secondly, the rotor side converter (RSC) and Grid side converter (GSC) are illustrated and developed using Space vector modulation (SVM) in order to minimize the stress and the harmonics and to have a fixed switching frequency. In this context, the switching frequency generated by IDPC to control the six IGBTs of the inverter (RSC), and this control algorithm works under both Sub- and Supersynchronous operation modes and depending to the wind speed profiles. The quadrants operation modes of the DFIG are described in details using real DFIG to show the power flow under both modes (motor and generator in the four (04) quadrants. Finally, the conventional IDPC have several drawbacks as: response time, power error and overshoot. In this context, the PID and MRAC (adaptive regulator) controllers are proposed instead of the PI to improve the wind-system performances via MPPT strategy with/without robustness tests. The obtained simulation results under Matlab/Simulink® show high performances (in terms of power error, power tracking and response time) in steady and transient states despite sudden wind speed variation, whereas big power error and remarkable overshoot are noted using robustness tests, so the proposed IDPC can not offer big improvement under parameter variation.
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CHEBABHI, Ali. "A Novel IDPC using Suitable Controllers (Robust and Intelligent Controllers)." In Improved Indirect Power Control (IDPC) of Wind Energy Conversion Systems (WECS), 86–120. BENTHAM SCIENCE PUBLISHERS, 2019. http://dx.doi.org/10.2174/9789811412677119010006.

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This chapter presents an improved Indirect power control (compared to the conventional one illustrated in chapter: 03) based on robust and suitable controllers (Robust and Intelligent controllers) to control the d-q axes currents (Ird and Irq) respectively. In order to overcome the speed/efficiency trade-off and divergence from peak power under fast variation of wind speed; three intelligent controllers (based on, T1-FLC, T2-FLC and NFC) are proposed to control the rotor direct and quadrature currents (Ird and Irq) instead of PID controllers, for grid-connected doubly fed induction generator (DFIG). The same wind-turbine (DFIG (4kW) and turbine (4.5 kW)) used in last chapter will be developed again in order to make a comparative study between the wind-system performance algorithms. The SVM strategy (to ensure the fixed switching frequency and to minimize the harmonics) is used in RSC for switching signals generation to control the inverter. In this chapter, mathematical model of each proposed controller is described in detail. The MPPT strategy is also developed in the three proposed algorithms in order to extract the maximum wind power by keeping the reactive power equal to zero value. The main aim of the proposed control is to improve the wind system performance despite the sudden wind speed variation and the DFIG’s parameter variation in transient and steady states. The simulation results using the Matlab/Simulink environment (under three proposed modes and using robustness tests) show that the intelligent controller offered high power quality in spite of wind-speed variation have superior dynamic performance and are more robust during parameter variation.
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Conference papers on the topic "Fixed frequency hysteretic control"

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Vahedi, H., E. Pashajavid, and K. Al-Haddad. "Fixed-band fixed-frequency hysteresis current control used In APFs." In IECON 2012 - 38th Annual Conference of IEEE Industrial Electronics (IECON2012). IEEE, 2012. http://dx.doi.org/10.1109/iecon.2012.6389110.

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Repecho, V., D. Biel, and E. Fossas. "Fixed switching frequency sliding mode control using an hysteresis band controller." In 2014 13th International Workshop on Variable Structure Systems (VSS). IEEE, 2014. http://dx.doi.org/10.1109/vss.2014.6881146.

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Lacarbonara, Walter, Fabrizio Vestroni, and Danilo Capecchi. "Poincaré Map-Based Continuation of Periodic Orbits in Dynamic Discontinuous and Hysteretic Systems." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8088.

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Abstract A numerical algorithm is proposed to compute variation of periodic solutions and their codimension-one bifurcations in discontinuous and hysteretic systems in the relevant control parameter space. For dynamic systems with discontinuities and hysteresis, some components of the associated vector fields are nondifferentiable. Therefore, one cannot resort on classical numerical tools based on the evaluation of the Jacobian of the vector field for path-following analyses. Using the pertinent state space, periodic orbits are sought as the fixed points of a Poincaré map based on an appropriate return time. The Jacobian of the map is computed numerically via either a forward or a central finite-difference scheme and a Newton-Raphson procedure is used to determine the fixed points. The continuation scheme is a pseudo-arclength algorithm based on arclength parameterization. The eigenvalues of the Jacobian of the map — Floquet multipliers — are computed to ascertain the stability of the periodic orbits and the associated bifurcations. The procedure is used to construct frequency-response curves of a bilinear, a Masing-type, and a Bouc-Wen oscillator in the primary and superharmonic frequency ranges for various excitation levels. The proposed numerical strategy proves to be very effective in capturing a rich class of solutions and bifurcations — including jump phenomena, pitchfork (symmetry-breaking), and period-doubling.
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Vahedi, Hani, Yasser Rahmati Kukandeh, Mahsa Ghapandar Kashani, Aliakbar Dankoob, and Abdolreza Sheikholeslami. "Comparison of adaptive and fixed-band hysteresis current control considering high frequency harmonics." In 2011 IEEE Applied Power Electronics Colloquium (IAPEC). IEEE, 2011. http://dx.doi.org/10.1109/iapec.2011.5779858.

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Abdel-Rahim, Omar, Hirohito Funato, and Junnosuke Haruna. "Novel fixed frequency predictive hysteresis maximum power point tracking control for photovoltaic applications." In 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE 2015-ECCE Asia). IEEE, 2015. http://dx.doi.org/10.1109/icpe.2015.7168037.

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Badmus, O. O., S. Chowdhury, K. M. Eveker, and C. N. Nett. "Control-Oriented High-Frequency Turbomachinery Modeling: Single-Stage Compression System 1D Model." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-018.

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In this paper, a 1D unsteady compressible viscous flow model of a generic compression system previously developed by the authors is applied to a multi-stage axial compressor experimental rig configured for single–stage operation. The required model parameters and maps are identified from experimental data. The resulting model is an explicit system of 9 first order ODE’s. The model inputs are compressor speed, nozzle area, compressor discharge bleed area, plenum bleed area, inlet total pressure and entropy, and nozzle and bleed exit static pressures. The model and experimental data are compared with respect to both open–loop uncontrolled and closed–loop controlled behaviors. These comparisons focus on i) forced transients and ii) global nonlinear dynamics and bifurcations. In all cases the comparison between the model and experimental data is excellent. Of particular interest is the ability of the model, which does not include any hysteretic maps, to predict experimentally observed hysteresis with respect to the onset and cessation of surge. This predictive capability of the model manifests itself as the coexistence of a stable equilibrium (rotating stall) and a stable periodic solution (surge) in the model at a single fixed set of system input values. Also of interest is the fact that the controllers used for closed–loop comparisons were designed directly from the model with no a posteriori tuning of controller parameters. Thus, the excellent closed–loop comparisons between the model and experimental data provide strong evidence in support of the validity of the model for use in direct model based controller design. The excellent agreement between the model and experimental data summarized above is attributed in large part to the use of effective lengths within the model, as functions of axial Mach number and nondimensional compressor rotational speed, as prescribed by the modeling technique. The use of these effective lengths proved to be far superior to the use of physical lengths. The use of these effective lengths also provided substantial improvement over the use of physical lengths coupled with fixed first order empirical lags, as proposed by other authors for the modeling of observed compressor dynamic lag. The overall success of this model is believed to represent a positive first step toward a complete experimental validation of the approach to control–oriented high–frequency turbomachinery modeling being developed by the authors.
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Li, Jinghao, Aiguo Wu, and Ruiye Zhang. "Fixed-frequency Boundary Control of Buck Converter Based on Discrete Regulator of Hysteresis Band." In 2018 13th World Congress on Intelligent Control and Automation (WCICA). IEEE, 2018. http://dx.doi.org/10.1109/wcica.2018.8630351.

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Khan, Qadeer, Amr Elshazly, Sachin Rao, Rajesh Inti, and Pavan Kumar Hanumolu. "A 900mA 93% efficient 50µA quiescent current fixed frequency hysteretic buck converter using a highly digital hybrid voltage- and current-mode control." In 2012 IEEE Symposium on VLSI Circuits. IEEE, 2012. http://dx.doi.org/10.1109/vlsic.2012.6243850.

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Chen, Zhang, Pengye Wang, Kang Liu, Zicheng Liu, and Dong Jang. "Fixed-frequency hysteresis controller for fault-tolerant control of six-phase permanent magnet synchronous motor." In 2021 IEEE 4th International Electrical and Energy Conference (CIEEC). IEEE, 2021. http://dx.doi.org/10.1109/cieec50170.2021.9510297.

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Wong, L. K., and T. K. Man. "Maximum frequency for hysteretic control COT buck converters." In 2008 13th International Power Electronics and Motion Control Conference (EPE/PEMC 2008). IEEE, 2008. http://dx.doi.org/10.1109/epepemc.2008.4635311.

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