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Research of an Efficient LED Lighting Driver Based on Boost-Buck Converter  [PDF]
Renbo Xu, Yongzhi Li, Lixin Zhong, Jiaming Liu
Circuits and Systems (CS) , 2014, DOI: 10.4236/cs.2014.56017

Boost-Buck converter is widely used in LED lighting drivers. In this paper, Boost-Buck main circuit related characteristics are firstly discussed, and then a new Boost-Buck high power efficient double loop control strategy is built by adopting error amplifier and integrator control method. It is demonstrated that the new system has many advantages such as high efficiency, fast response, strong anti-interference, good stability after analyses and simulations of its working dynamic characteristics.

新型Buck-Boost矩阵变换器的双闭环控制策略  [PDF]
控制理论与应用 , 2009, DOI: 10.7641/j.issn.1000-8152.2009.2.018
Abstract: 为了克服传统矩阵变换器电压传输比低的缺陷,提出了新型Buck-Boost矩阵变换器,采用双闭环控制策略进行控制.介绍了该控制策略的基本原理与设计方法,对比分析了该控制策略与滑模控制及离散滑模控制的各种特性,并通过仿真对其控制效果进行了验证.结果表明:该控制策略不仅具有比滑模控制和离散滑模控制更加优良的动态性能,而且还具有更强的谐波抑制能力,其输出波形的谐波失真度更小,稳态精度更高,因而具有更好的应用价值.
Nonlinear Phenomena in Buck-Boost Power Factor Correction Converter  [cached]
Mehrnoosh Vatani,Soodabeh Soleymani,Mehrdad Ahmadi Kamarposhti
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: Buck-Boost Power-Factor-Correction (PFC) converter with Average-Current-Model (ACM) control is a nonlinear circuit because of the multiplier using and large change in the duty cycle, so its stability analysis must be studied by nonlinear model. In this paper double averaging method is used for describing the model of this converter. By this model we would be able to explain the low frequency dynamics of the system and identify stability boundaries according to circuit parameters and also nonlinear phenomena of this converter are detected.
双沿调制的四开关Buck-Boost变换器  [PDF]
中国电机工程学报 , 2009,
Abstract: 与传统的Buck-Boost变换器相比,四开关Buck-Boost变换器具有输入输出同极性、开关管电压应力低等优点。该文针对四开关Buck-Boost变换器在通信电源分布式系统中的应用,提出三模式双频双沿调制的控制策略。该控制策略将变换器分成Buck单元和Boost单元,此两单元分别采用后沿调制和前沿调制,并且在Buck-Boost工作模式时,开关频率由Buck以及Boost模式的200kHz降到40kHz,以提高变换器的效率。实验室制作了一台48V(33~75V)输入48V/6.25A的样机,对所提出的控制策略进行验证。试验结果表明所得结论正确。
半周控制双Buck-Boost单级逆变器  [PDF]
电工技术学报 , 2011,
Abstract: 本文提出了一种新颖的双Buck-Boost单级逆变器。单级式逆变器相比传统的两级式逆变器,拓扑结构大大简化,减小了体积重量,降低了损耗,在中小功率场合中的应用具有明显的优势。同时传统单级逆变器不能直接实现升压逆变,在输入母线电压较低时必须增加前级升压电路。针对以上情况,本文通过将两个Buck-Boost电路采用输入串联、输出并联的方式组合,得到一种新型的双Buck-Boost逆变器,并采用半周工作方式使其正常可靠工作,可实现单级直接升压逆变。文中对该电路的工作原理和控制策略进行了详细的分析。仿真和实验验证了新型电路的可行性。该电路在输入母线电压低于输出电压的宽电压范围内均能正常逆变,并取得了较好的波形质量和较高的变换效率。
Study of Bifurcation and Chaos in the Current-Mode Controlled Buck-Boost DC-DC Converter (I) --Modeling and Simulation
Buck-Boost DC-DC变换器中分叉与混沌问题的研究(Ⅰ)——建模与仿真(英文)

WU Jie,LIU Mingjian,YANG Ping,
吴 捷
,刘明建,杨 苹

控制理论与应用 , 2002,
Abstract: This paper studies the bifurcation and chaos in current-mode controlled Buck_Boost converter. The discrete model for Buck-Boost converter in continuous conduction mode (CCM) is derived. The bifurcation and chaos phenomena of Buck_Boost converter have been investigated with input voltage E, reference current I ref,resistor R, inductor L and capacitor C as bifurcation parameters.
Integrated design & control of a buck boost converter
Garcia, Martin J. Pomar;Normey-Rico, Julio E.;Gutierrez, Gloria;Prada, César de;
Sba: Controle & Automa??o Sociedade Brasileira de Automatica , 2009, DOI: 10.1590/S0103-17592009000300013
Abstract: this paper presents the integrated design and control of a buck boost converter (bbc). in the proposed methodology the design tool provides simultaneously the controller tuning and bbc design parameters in such a way that some closed-loop pre-specified static and dynamic behavior is obtained. this approach contrasts with the traditional methodology, where the design of bbc is performed without taking into account its dynamical behavior. an optimization procedure is used to obtain the electronic components of the bbc and the tuning parameters of the controller, minimizing an objective function that considers the set of performance specifications. although the methodology can be applied to any converter and any control strategy, in this particular case an ideal bbc and a sliding model control (smc) strategy are used. some simulation results show the advantages and principally the flexibility that can be obtained with this approach.
Modeling and Analysis of Sliding Mode Controller for Buck-Boost Converter
A.V. Mayakkannan,S. Rajapandian
International Journal of Electrical and Power Engineering , 2012,
Abstract: Non-linear control of power converters is an active area of research in the fields of power electronics. The variable structure nature of DC-DC converters lends itself to Sliding Mode Control (SMC). The state space averaged model of a DC-DC buck boost converter has been derived and sliding mode control techniques are applied to the system to obtain the desired output. The presence of a RHP zero in the control-to-output transfer function resulted in undershoot in the output response. To tide over the disadvantages of the conventional control techniques, the non-linear Sliding Mode Control (SMC) scheme has been adopted. The simulations are carried out using SIMULINK software.
The Research of Three-phase Boost/Buck-boost DC-AC Inverter  [PDF]
Xiangli Li, Zhaoyang Yan, Yanni Gao, Hanhong Qi
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B174

This paper presents a new inverter based on three-phase Boost/Buck-boost single-stage inverter. The basic configuration of the new topology and their fundamental principle are firstly introduced, the method of design double-loop controller and sliding mode controller are clarified, analyzed and compared in the following. Finally the validity and feasibility of the new topology are tested by simulation. The results indicate that regulation of the voltage transfer ratio and output frequency can be realized optionally by the new converter, furthermore the harmonic distortion of waveform is low. So the inherent drawback of low voltage transfer ratio of traditional converter is effectively settled. This study may provide inspiration for further engineering application.

The State Space Average Model of Buck- Boost Switching Regulator Including all of The System Uncertainties  [PDF]
Mohammad Reza Modabbernia,Fatemeh Kohani Khoshkbijari,Reza Fouladi,Seyedeh Shiva Nejati
International Journal on Computer Science and Engineering , 2013,
Abstract: In this paper a complete state-space average model for the buck-boost switching regulators is presented. The presented model includes the most of the regulator’s parameters and uncertainties. In modeling, the load current is assumed to be unknown, and it is assumed that the inductor, capacitor, diode and regulator active switch are non ideal and they have a resistance in conduction condition. Some other non ideal effects look like voltage drop of conduction mode of the diode and active switch are also considered. This model can be used to design a precise and robust controller that can satisfy stability andperformance conditions of the buck-boost regulator. Also the effects of the boost parameters on the performance of the regulator can be shown easily with this model. After presenting the complete model,the buck-boost converter Benchmark circuit is simulated in PSpice and its results are compared with our model simulation results in MATLAB. The results show the merit of our model.
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