Improved one cycle control of DC-DC buck converter

Subramanian, K.; Kumar, V. K. Sarath; Saravanan, E.M.; Dinesh, E.

doi:10.1109/icaccct.2014.7019433

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…By using the pulsed and nonlinear characteristic nature of switching converters, dynamic control of the average value of switched variables is obtained. The one‐cycle control technique achieves robust performance, source disturbance rejection, and fast dynamic response. But the traditional one‐cycle controlled QBC (TOCCQBC) suffers from infirmness with the occurrence of load disturbance, mainly because of the lack of output feedback.…”

Section: Introductionmentioning

confidence: 99%

One‐cycle controlled quadratic buck converter

Wang

2018

Circuit Theory & Apps

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Summary The quadratic DC‐DC converter can broaden the voltage conversion ratio, which meets the requirements of wide input voltage. However, large‐scale variation of input voltage puts forward harsh requirements on ability to resist input disturbance of control strategy. Quadratic buck converter (QBC) is pulsed nonlinear dynamic systems, so the one‐cycle control strategy based on robustness principle may provide better rejection of power source than the linear feedback control. But the traditional one‐cycle controlled QBC (TOCCQBC) suffers from poor ability against load disturbance and steady‐state error. To overcome aforementioned shortages, an improved OCCQBC is proposed by adding inductor current to diode voltage as integral variable and introducing feedback of output voltage. The paper first introduces the working principle of the QBC, and second, the OCCQBC is presented. Then, a mathematical model using small signal analysis of the OCCQBC is established, and an experimental prototype with a power of 6 W is set up. Simulation and experimental results verify the correctness of the theoretical analysis and the feasibility of the strategy.

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Section: Introductionmentioning

confidence: 99%

One‐cycle controlled quadratic buck converter

Wang

2018

Circuit Theory & Apps

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“…DC-DC buck converters [1][2][3][4] play an important role in modern Very-Large-Scale Integration (VLSI) system. Controller design for any system needs knowledge about system behavior [5][6][7][8][9]. Usually this involves a mathematical description of the relation among inputs to the process, state variables, and output.…”

Section: Introductionmentioning

confidence: 99%

A Low Voltage Dynamic Synchronous DC-DC Buck Converter

Benlafkih¹,

Mohamed²

2017

IJSSN

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This paper presents the design and modeling of synchronous DC-DC buck converter for device applications low consumption using Matlab/Simulink. In this work, the steady-state and average-value models for buck converter are analysed and it offers the modeled equations and simulation techniques of standard buck converter topology including variable loads. The goals of the designer are stabilized output voltage from a given input DC voltage using a Proportional Integral Derivative (PID) controller.

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“…Compared with the conventional sliding mode control (SMC), other variants of the SMC have been proposed to improve the performance of DC-DC converters [7]- [10]. One-cycle control is applicable to large-signal nonlinear systems, and the improved one-cycle control can reject both the source side and load side disturbances of DC-DC converters [11], [12]. Synergetic control is used in DC-DC converters to achieve better dynamic performance and a faster response [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Transient Performance Improvement in the Boundary Control of Boost Converters using Synthetic Optimized Trajectory

Gao¹,

Yuan²,

Zhao³

et al. 2016

Journal of Power Electronics

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This paper focuses on an improvement in the transient performance of Boost converters when the load changes abruptly. This is achieved on the basis of the nature trajectory in Boost converters. Three key aspects of the transient performance are analyzed including the storage energy change law in the inductors and capacitors of converters during the transient process, the ideal minimum voltage deviation in the transient process, and the minimum voltage deviation control trajectory. The changing relationship curve between the voltage deviation and the recovery time is depicted through analysis and simulations when the load suddenly increases. In addition, the relationship curve between the current fluctuation and the recovery time is obtained when the load suddenly decreases. Considering the aspects of an increasing and decreasing load, this paper proposes the transient performance synthetic optimized trajectory and control laws. Through simulation and experimental results, the transient performances are compared with the other typical three control methods, and the ability of proposed synthetic trajectory and control law to achieve optimal transient performance is verified.

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Improved one cycle control of DC-DC buck converter

Cited by 9 publications

References 6 publications

One‐cycle controlled quadratic buck converter

One‐cycle controlled quadratic buck converter

A Low Voltage Dynamic Synchronous DC-DC Buck Converter

Transient Performance Improvement in the Boundary Control of Boost Converters using Synthetic Optimized Trajectory

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