Investigation on the Ripple Voltage and the Stability of SR Buck Converters With High Output Current and Low Output Voltage

Jinno, Masahito; Chen, Po‐Yuan; Lai, Yu-Chun; Harada, K.

doi:10.1109/tie.2009.2029510

Cited by 15 publications

(4 citation statements)

References 33 publications

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“…H g is known as input-to-output transmittance (or audio susceptibility) of converter and H d -as control-to-output transmittance. In some applications, other small-signal characteristics may be useful, for example input admittance or output impedance [17][18][19]20].…”

Section: Small-signal Transmittancesmentioning

confidence: 99%

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Small-signal transmittances of DC-DC step-down PWM converter in various operation modes

Janke¹

2015

Archives of Electrical Engineering

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Small-signal transmittances: input-to-output and control-to-output of BUCK converter power stage working in CCM or DCM mode are discussed. Ideal converter case and converter with parasitic resistances are considered separately. Derivations of small-signal transmittances, based on different approaches to finding the converter averaged models, are presented and the results are compared. Apart from theoretical considerations, some results of numerical calculations are presented. θ -small-signal representation of duty ratio in s-domain, CCM -continuous conduction mode, DCM -discontinuous conduction mode.

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Section: Small-signal Transmittancesmentioning

confidence: 99%

“…. 1 (19) In modern BUCK converters, diode D is often replaced by second transistor. In this case the term V F in averaged models should be omitted.…”

Section: The Influence Of Parasitic Resistances On Small-signal Transmentioning

confidence: 99%

Small-signal transmittances of DC-DC step-down PWM converter in various operation modes

Janke¹

2015

Archives of Electrical Engineering

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“…DC-DC converter plays a vital role in day to day life applications such as renewable energy, hybrid vehicles, battery charging, electric traction, fuel cell energy conversion system [1][2][3][4][5][6]. Many DC-DC converter topologies have been developed for these applications such as buck, boost, buck-boost, SEPIC, KY converters and Luo-converters (LCs) [7][8][9]. But any converter need good output voltage regulation, fewer ripples in the output voltage and reduced current and voltage stress.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Analysis of Effective Controllers for Multi-level DC to DC Cascaded Boost Converter

2021

Teh. vjesn.

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In this article, an investigation of effective controllers for Multi-level DC to DC Positive Output Cascaded Boost Converter operating in continuous conduction mode is carried out. The positive output cascaded boost converter is recently designed converter which increases the output voltage in geometric progression with simple structure and has better voltage transfer gain in comparison with conventional converter. In this study, two level cascaded positive output boost converter (TLCPOBC) using super lift technique was considered and the results were compared with single level cascaded positive output boost converter (SLCPOBC) to show the importance and need of Multilevel converters in DC to DC applications. Due to switching mode operation, the characteristics of TLCPOBC were non-linear in nature. In addition, during line and load variations, the system was not stable and converters behaved drastically. Therefore, an effective controller is essential to enhance the dynamic characteristics of converter. Linear controllers like Proportional Integral Controller (PI) and Proportional plus Proportional Integral Controller (P plus PI) were considered in this study. Here, PI controller acts as Single Loop Controller (SLC) whereas, P plus PI acts as Multi Loop Controller (MLC). The main advantage of MLC over SLC is that it may regulate both output voltage and inductor current of TLCPOBC which improves the performance of the system over a wide range of operating conditions. Using Ziegler -Nicholas tuning method, the parameters of controllers were obtained by the state-space equations of TLCPOBC. The performance of controllers is verified in MATLAB/Simulink models and results are validated to show the importance of an effective controller for TLCPOBC.

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“…In [13] and [14], the output filter of a buck converter is designed for a special application considering the OVR. In the presented method, a buck dc-dc converter is investigated from two OVR and filter size points of view in a way that the converter shows desirable performance in both the DCM and CCM.…”

Section: Introductionmentioning

confidence: 99%

Investigating Buck DC-DC Converter Operation in Different Operational Modes and Obtaining the Minimum Output Voltage Ripple Considering Filter Size

Babaei

Mahmoodieh²,

Sabahi³

2011

Journal of Power Electronics

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This paper investigates the operational modes of buck dc-dc converters and their energy transmission methods. The operational modes of such converters are classified in two types, discontinuous conduction mode (DCM) and continuous conduction mode (CCM). In this paper, the critical inductance relation of DCM and CCM is determined. The equations of the output voltage ripple (OVR) for each mode are obtained for a specific input voltage and load resistance range. The maximum output voltage ripple (MOVR) is also obtained for each mode. The filter size is decreased and the minimum required inductance value is calculated to guarantee the minimization of the MOVR. The experimental and simulation results in PSCAD/EMTDC prove the correctness of the presented theoretical concepts.

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Investigation on the Ripple Voltage and the Stability of SR Buck Converters With High Output Current and Low Output Voltage

Cited by 15 publications

References 33 publications

Small-signal transmittances of DC-DC step-down PWM converter in various operation modes

Small-signal transmittances of DC-DC step-down PWM converter in various operation modes

Design and Performance Analysis of Effective Controllers for Multi-level DC to DC Cascaded Boost Converter

Investigating Buck DC-DC Converter Operation in Different Operational Modes and Obtaining the Minimum Output Voltage Ripple Considering Filter Size

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