A unified method for the small-signal modelling of multi-resonant and quasi-resonant converters

Szabo, A.; Kamsara, M.; Ward, E.S.

doi:10.1109/iscas.1998.704064

Cited by 7 publications

(6 citation statements)

References 14 publications

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“…The small-signal equivalent circuit model with a three-terminal ZCS device is represented in y-parameter and shown in Figure 12(c) [14]. Thus, the smallsignal circuit model of buck ZCS-QRC can be carried out and shown in Figure 12(d).…”

Section: Small-signal Modeling Of Qrcmentioning

confidence: 99%

“…As long as these two configurations are obtained, the work left in modeling the QRCs is to derive the state-space averaged models in terms of two-port network for the buck-QRC BCU and boost-QRC BCU, plus certain network manipulation. When perturbing Equations (6) and (7), a two-port state-space averaged model of the buck-QRC BCU is derived [14]. The perturbations include the switching frequency, and the averaged current and voltage.…”

Section: Small-signal Modeling Of Qrcmentioning

confidence: 99%

“…Current source Boost-QRC BCU Figure 12(c) [14]. Thus, the smallsignal circuit model of buck ZCS-QRC can be carried out and shown in Figure 12(d).…”

Section: Capacitive Loadmentioning

confidence: 99%

“…In [10], the authors proposed a generalized state-space averaging technique for analyzing a class of periodically switched networks, such as QRCs. Papers [11][12][13][14][15][16][17][18][19][20][21][22] presented general methods of modeling, synthesizing, and analyzing QRCs. A systematic approach to modeling the QRCs by dividing the switching part of the converter circuit into a minimum separable switching configuration was proposed in [15].…”

Section: Introductionmentioning

confidence: 99%

“…A systematic approach to modeling the QRCs by dividing the switching part of the converter circuit into a minimum separable switching configuration was proposed in [15]. Although the authors of [7][8][9][10][11][12][13][14][15] have their own valuable contributions, BCUs of QRCs have not been identified. Thus, degrees of complexity in synthesizing, analyzing, and modeling the converters have not been minimized yet, and researchers have to spend a lot of time and effort to learn about the small-signal characteristic and topology of each individual QRC and MRC.…”

Section: Introductionmentioning

confidence: 99%

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A structural approach to synthesizing, analyzing, and modeling quasi‐resonant converters

Song

2011

Circuit Theory & Apps

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SUMMARYThis paper presents a structural approach to synthesizing, analyzing, and modeling quasi-resonant converters (QRCs) based on the concept of basic converter units (BCUs). Typical QRCs include the wellknown topologies of buck, boost, buck-boost, Cuk, Zeta, and Sepic. With proper reconfiguration, these QRCs can be synthesized from either buck-QRC BCU or boost-QRC BCU plus certain linear networks. Thus, the BCUs and general configurations of the converters can be identified. Analysis of steady state operation and derivation of small-signal models for the converters then can be conveniently performed from the general configurations, reducing the complexity significantly. Moreover, the proposed structural approach can explore more physical insights into the converters in a family, and can reveal more relationships among converters over conventional approaches.

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Section: Small-signal Modeling Of Qrcmentioning

confidence: 99%

Section: Small-signal Modeling Of Qrcmentioning

confidence: 99%

“…Current source Boost-QRC BCU Figure 12(c) [14]. Thus, the smallsignal circuit model of buck ZCS-QRC can be carried out and shown in Figure 12(d).…”

Section: Capacitive Loadmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A structural approach to synthesizing, analyzing, and modeling quasi‐resonant converters

Song

2011

Circuit Theory & Apps

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Non‐linear modelling and stability analysis of resonant DC–DC converters

Mandal

Aroudi

Abusorrah³

et al. 2015

IET Power Electronics

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Resonant dc-dc converters have found increasing application in industry in recent times. Yet, the methods of dynamical analysis and parameter design for this kind of system are not well developed. The averaging method cannot be used in such converters as the small-ripple assumption does not hold. The sampled-data model, which seeks to obtain a closed form expression of the state at a clock instant in terms of that at the previous clock instant, also becomes unwieldy for converters with many topological modesa condition prevailing in all resonant converters. In this study the authors show that the Filippov method can be effectively applied for accurate s-domain small signal analysis as well as time domain stability analysis by locating the stability boundaries in the paramater space for such systems. The authors apply this method to three classes of resonant convertersthe switch resonant converter, the resonant transition converter and the load resonant converterand present the mechanisms by which these converters may lose stability as the parameters are varied. The theoretical results corresponding to the resonant transition converter are validated experimentally.

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Zero-Current-Switch Quasi-Resonant Boost Converter in Power Factor Correction Applications

Firmansyah

Tomioka

Abe

et al. 2009

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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Abstract-A modified zero-current-switched quasi-resonant (ZCS-QR) boost converter is employed in a power factor correction (PFC) application. The main goal is to achieve a small-size low-noise PFC circuit based on single-switch boost topology. A clamp diode has been added to avoid the voltage ringing problem that is originally generated across the ZCS-QR switch during its turn-off period. The converter operation states after clamp diode application are presented. The PFC circuit control scheme implementation is also described. An experimental circuit with 100 V rms ac of 50 Hz input and 330 V dc output has been built. A high efficiency of 90% and the proof of compliance to the IEC61000-3-2 class D have been confirmed by experiment.

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A unified method for the small-signal modelling of multi-resonant and quasi-resonant converters

Cited by 7 publications

References 14 publications

A structural approach to synthesizing, analyzing, and modeling quasi‐resonant converters

A structural approach to synthesizing, analyzing, and modeling quasi‐resonant converters

Non‐linear modelling and stability analysis of resonant DC–DC converters

Zero-Current-Switch Quasi-Resonant Boost Converter in Power Factor Correction Applications

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