Journal ArticleDOI
Fast computer-aided simulation of switching power regulators based on progressive analysis of the switches' state
TLDR
In this article, a new method for time-domain analysis of power electronics circuits is developed based on the following principles: (a) the switching topology is a linear time-invariant circuit; (b) at each instant, the voltage across a capacitor and the current through an inductor have a certain value, like an independent voltage- or current source, respectively; (c) generally, no switching relationship between the externally and internally controlled switches may be assumed; (d) prior knowledge of the internally controlled switch' operation is not available; and (e) theAbstract:Â
A new method for time-domain analysis of power electronics circuits is developed based on the following principles: (a) at each instant, the switching topology is a linear time-invariant circuit; (b) at each instant, the voltage across a capacitor and the current through an inductor have a certain value, like an independent voltage- or current source, respectively; (c) generally, no switching relationship between the externally and internally controlled switches may be assumed; (d) prior knowledge of the internally controlled switches' operation is not available; and (e) the switching action may change the response of the circuit immediately after the switching moment, implying that some constraints may be in violation of the presumed switches' states. The algorithm is based on solving a system of algebraical modified nodal equations at each integration step. The number of systems to be solved equals the number of topologies the converter goes through in a cycle. This feature, and the fact that no solutions of time-differential equations or Laplace transform inverses are required, cause the algorithm to be a fast one. At each step, the presumed state of all the switches is checked, and if some constraints are violated, the program looks for another valid topology. An example, with parasitic effects taken into account, is presented; the experimental results, as well as the simulation results obtained by using other available algorithms, confirmed the accuracy of the results achieved with the presented approach. >read more
Citations
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Journal ArticleDOI
A New Perspective for Modeling Power Electronics Converters: Complementarity Framework
TL;DR: In this article, the complementarity framework is used to represent complete switched models of a wide class of power converters, with EDs having characteristics represented by piecewise-affine (even complicated) relations.
Journal ArticleDOI
A new algorithm for simulation of power electronic systems using piecewise-linear device models
TL;DR: A new algorithm for simulation of power electronic systems using Piecewise-linear approximation to model nonlinear components, including switching devices, nonlinear reactive components, and nonlinear control circuitry is described.
Journal ArticleDOI
Analysis of networks with ideal switches by state equations
TL;DR: A new computer-oriented method for a large-signal time-domain analysis of networks containing ideal switches is presented and Dirac's delta impulses are permitted in the analysis in order to find out the correct topology after switching.
Journal ArticleDOI
Multirate Analysis Method for a Power Electronic System by Circuit Partitioning
TL;DR: In this article, the authors proposed a new method that divides the whole circuit into sub-circuits by applying an explicit integration formula to series inductors and/or parallel capacitors, and then integrates subcircuits using an implicit formula with independent integration step sizes.
A fast time domain digital simulation technique for power converters - Application to a buck converter with feedforward compensation
S. S. Kelkar,Fred C. Lee +1 more
TL;DR: A large-signal nonlinear recurrent time domain model is presented for the converter to analyze the transient response due to a step input change with and without the presence of the proposed feedforward loop.
References
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A general unified approach to modelling switching-converter power stages
R.D. Middlebrook,Slobodan Cuk +1 more
TL;DR: In this article, a canonical circuit model is proposed, whose fixed topology contains all the essential input-output and control properties of any d.c.-to-d.c. switching converter, regardless of its detailed configuration, and by which different converters can be characterized in the form of a table conveniently stored in a computer data bank.
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A General Approach to Sampled-Data Modeling for Power Electronic Circuits
TL;DR: A general sampled-data representation of the dynamics of arbitrary power electronic circuits is proposed to unify existing approaches and lead, via compact and powerful notation, to disciplined modeling and straightforward derivation of small-signal models that describe perturbations about a nominal cyclic steady state.
Journal ArticleDOI
Time-domain analysis of networks with internally controlled switches
D. Bedrosian,Jiri Vlach +1 more
TL;DR: A computer-oriented method for the time-domain analysis of networks with internally controlled ideal switches is presented, and it is shown that Dirac impulses must be considered for the analysis of some switched networks.
Journal ArticleDOI
Generalized Computer-Aided Discrete Time-Domain Modeling and Analysis of DC-DC Converters
TL;DR: In this article, a generalized discrete time-domain modeling and analysis technique is presented for all types of switching regulators using any type of duty-cycle controller and operating in both continuous and discontinuous inductor currents.
Journal ArticleDOI
Extension of state-space averaging to resonant switches and beyond
TL;DR: In this article, it is shown that the state-space averaging method can be extended by linear network theory from the domain of pulse-width-modulated converters to a much larger class of converters, including resonant switch converters.