Proceedings ArticleDOI
Averaged modeling and analysis of resonant converters
J. Sun,H. Grotstollen +1 more
- pp 707-713
TLDR
In this paper, an averaged modeling and analysis method for resonant power converters is described, which is based on the slowly varying amplitude and phase transformation, which leads to a new transformed model where all state variables are slow variables.Abstract:
An averaged modeling and analysis method for resonant power converters is described. The method is based on the slowly varying amplitude and phase transformation. Application of such a transformation to the state space model of a resonant power converter leads to a new transformed model where all state variables are slow variables. The averaging method is then applied to the transformed model to derive an averaged model. Various kinds of analysis and controller design can be carried out using the averaged model. The method is discussed in detail, and a series resonant power converter is taken as example to demonstrate the application of the method. >read more
Citations
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The Essence of Three-Phase PFC Rectifier Systems—Part II
TL;DR: In this article, three-phase power factor correction (PFC) rectifier topologies with sinusoidal input currents and controlled output voltage are derived from known single-phase PFC rectifier systems and/or passive 3-phase diode rectifiers, and their functionality and basic control concepts are briefly described.
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A Novel Single-Stage High-Power-Factor AC-to-DC LED Driving Circuit With Leakage Inductance Energy Recycling
Yan-Cun Li,Chern-Lin Chen +1 more
TL;DR: A novel single-stage ac-to-dc light-emitting-diode (LED) driver circuit integrated with a flyback converter that can provide not only high PF and low total harmonic distortion but also high conversion efficiency and low switching voltage spikes.
Proceedings ArticleDOI
The essence of three-phase PFC rectifier systems
Johann W. Kolar,Thomas Friedli +1 more
TL;DR: In this article, three-phase PFC rectifier topologies with sinusoidal input currents and controlled output voltage are derived from known single-phase rectifier systems and/or passive 3-phase diode rectifiers, and analytical formulas for calculating the current stresses on the power semiconductors of selected topologies are provided.
Journal ArticleDOI
Extensions of averaging theory for power electronic systems
Brad Lehman,R.M. Bass +1 more
TL;DR: In this paper, the authors extended the averaging theory for power electronic systems to include feedback controlled power converters and provided theoretical justification for commonly used averaging methods, such as the ripple estimate expression.
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Control Strategies for Wide Output Voltage Range LLC Resonant DC–DC Converters in Battery Chargers
TL;DR: The proposed control scheme minimizes both low- and high-frequency current ripples on the battery while maintaining stability of the dc-dc converter, thus maximizing battery life without penalizing the volume of the charger.
References
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Journal ArticleDOI
A comparison of half-bridge resonant converter topologies
TL;DR: In this paper, the half-bridge series-resonant, parallel-reonant and combination series-parallel resonant converters are compared for low-output-voltage power supply applications.
Journal ArticleDOI
Generalized averaging method for power conversion circuits
TL;DR: In this paper, a more general averaging procedure that encompasses state-space averaging and that is potentially applicable to a much broader class of circuits and systems is presented, including resonant type converters.
Journal ArticleDOI
Approximate small-signal analysis of the series and the parallel resonant converters
TL;DR: In this article, approximate transfer functions of series and parallel resonant converters are given which are in good agreement with the results of exact analysis as well as the results obtained in experiments, and it is shown that the dominant behavior of these transfer functions is determined by the output low-pass filter modified by the internal impedance of the converter.
Proceedings ArticleDOI
Small-signal modeling of series and parallel resonant converters
TL;DR: In this article, a small-signal modeling technique based on the extended describing function concept is applied to series-resonant converters (SRCs), and the models developed include both frequency control and phase-shift control.
Proceedings ArticleDOI
Averaged modelling of switching power converters: reformulation and theoretical basis
J. Sun,H. Grotstollen +1 more
TL;DR: In this article, a uniform averaged modeling method for switching power converters (SPCs) is established, which is applicable to most known types of SPC, including PWM, resonant, and quasi-resonant converters.