due to the high efficiency and low switching losses of resonant power convertors in comparison with switching convertors, nowadays there is a growing trend towards these convertors. however, because of the high frequency of switching in such convertors, it is quite difficult to present an efficient control method. in this paper, based on the state feedback method and using pole placement techni...

Robust performance controller design for duty-cycle controlled series resonant converter (SRC) is proposed in this paper. The uncertainties of the converter are analyzed with load variation and power circuit components tolerances are taken into consideration. Additionally, a nominal performance (NP) controller is designed. Closed-loop system is simulated with Orcad and simulation results of r...

Dynamic modeling and control of dc-dc series resonant converter (SRC) especially when operating in discontinuous conduction mode (DCM) is still a challenge in power electronics. Due to semiconductors switching, SRC is naturally represented as a switched linear system, a class of hybrid systems. Nevertheless, the hybrid nature of the SRC is commonly neglected and it is modeled as a purely contin...

This application note describes a 150W rating design guideline for LED street lighting. The application design consists of CRM PFC and LLC SRC with high power factor and high power conversion efficiency using FL7930B and FAN7621S. To verify the validity of the application board and scheme, a demonstration board 150W (103V/1.46A) AC-DC converter was implemented and its results are presented in t...

With the development of power electronics devices, resonant converter is proved to be more efficient than conventional converter as it employs soft switching technique. Among the three basic configuration of resonant converter, Series Resonant Converter (SRC), Parallel Resonant Converter (PRC) and Series Parallel Resonant Converter (SPRC), the LLC configuration under SPRC is proved to be most e...

Fuzzy Logic Control (FLC) technology has drastically reduced the development time and deployment cost for the synthesis of nonlinear controllers for dynamic systems. As a result we have experienced an increased number of FLC applications. We will illustrate our eeorts in FLC technology transfer aimed at controlling a resonant converter power supply. We will discuss the development of FLCs for a...

This paper describes a consideration of the excitation circuit of a switched reluctance generator (SRG). The SRG is a doubly salient machine. It does not contain any magnets or brushes, and the phases are completely independent. The rotor is made of laminated iron and it does not have any winding. However, the conventional excitation circuit of this machine is an asymmetry half bridge converter...

This paper proposes an analytical approach to derive voltage gain for phase modulated (PM) dc-dc series resonant converter (SRC) operating in discontinuous conduction mode (DCM). Conventional fundamental harmonic approximation (FHA) technique is extended for non-ideal series resonant tank. The DCM analysis is presented in a normalized form defining appropriate base quantities. The converter is ...

In this paper, a new all-digital asynchronous sample-rate converter (SRC) for video signals with an effective resolution of 12 bits using digital signal processing is presented. It is designed for the high quality requirements that exist in professional equipment for CATV head ends. The architecture of the digital SRC which is optimized for an implementation with small memory and low processing...

This paper presents the theoretical analysis, simulation and design optimisation of a Series Resonant Converter (SRC) working as an interface for inductive coupling. Inductive coupling is needed when the transfer of energy has to be made without any electrical contact. In this case the coupling transformer has to be separable, i.e., the transformer parameters are time varying variables, instead...