Pdf conventional resonant controllers rcs are commonly used in the current control of gridtied converters with lcl filter due to their advantages. Operation and design 4 application note an 201209 v1. Halfbridge resonant controller ice1hs01g pin configuration and functionality 1 pin configuration and functionality 1. Llc resonant converter for battery charging application. Lcd tvmonitor main and standby smps datasheet search. Design of pr current control with selective harmonic. This controller achieves robust stability and np using hinfsyn function in matlab. Robustness analysis for a sweep in the ratio f res f s from 1 10 to 1 4. The l6599a is an improved revision of the previous l6599.
Ncp80 quasiresonant currentmode controller for high. Subbulekshmi school of electrical engineering, vit university, chennai associate professor, school of electrical engineering, vit university, chennai abstract this paper describes about the llc resonant converter used for the battery charging application. Implementation of pi controller for fourth order resonant power converter with capacitive. Controller for free running quasiresonant operation the ncp1207 combines a true current mode modulator and a demagnetization detector to ensure full borderlinecritical conduction mode in any loadline conditions and minimum drain voltage switching quasi. Digital resonant current controllers for voltage source converters introduction plant model for currentcontrolled vscs plant model for currentcontrolled vscs i model suitable for active lters, active recti ers, adjustable speed drives decoupled back emf, etc. Drm119, llc resonant acdc switchedmode power supply. This operating mode can replace pwm operating mode in llc, which can improve efficiency signficantly in light load. The proportional resonant pr current controller provides gains at a. Ncp80 quasiresonant currentmode controller for highpower universal offline supplies the ncp80 hosts a high. Nowadays, liquid crystal display lcd panels are widely used in applications such as monitors. This paper presents an h f np controller as well as a robust performance controller rp for src shown in fig.
It is a practical, systematic guide to the analysis and design of various dcdc resonant inverters, highfrequency rectifiers, and dcdc resonant converters that are building blocks of many of todays highfrequency energy processors. But the main and advantageous one is the resonant controller. Robust performance controller design for dutycycle controlled series resonant converter src is proposed in this paper. S1s4 are switching devices having gate turnon and turnoff capability. A programmable time delay is provided to insert a deadtime at the turnon. Designing a mediumpower resonant llc converter using the ncp95 prepared by. Download limit exceeded you have exceeded your daily download allowance. The switching states and the corresponding voltage vector values of pwm inverter gridconnected in twophase stationary coordinate are shown in table 1, where s a, s b and s c represents the switching status of phase a, b, c, respectively and s k 1 represents the upper switch in phase k turning on and the under switch turning off, s k 0 denotes the upper switch in phase k turning. Control of series resonant converter with robust performance against load and power circuit components uncertainties a. The series load resonant converter is a dcdc converter based on a resonant circuit which allows softswitching operation. Resonant controller to minimize thd for pwm inverter. Resonant harmonic generation in algaas nanoantennas using structured light rocio camachomorales, 1 godofredo bautista, 2 xiaorun zang, 2 lei xu, 1 l o turquet, 2 andrey. On semiconductor energy efficient ncp99 current mode resonant controller with the evaluation board ncp4305 sr.
Pdf tuning rules for proportional resonant controllers. Designed to function as both a superior seniortograduate level. Based on the above a robust multiresonant pr regulator for threephase gridconnected vsi using direct pole placement design strategy bin li, ming zhang, long huang. Integral resonant control scheme irc for damping the dominant resonant mode of the piezoelectric nanopositioner and uses an integral controller to achieve tracking performance. It is thus beneficial to use the proportional resonant pr controller fig. The application research of proportional resonance. Downloaded from np downloaded from np 2 candidates are required to give their answer in their own words as far as practicable the figures in margin indicate full marks. The quasi resonant, ice5qsag is the 5th generation of quasi resonant controller optimized for offline switch power supply in cascode configuration. A 240w converter has been selected as an illustrative example. Extron customers have asked for a way to trade in these brand new power supplies and our power. Home resource centre texas instruments power management offline and isolated dcdc controllers and converters pwm and resonant controller. As a result, the overall system efficiency is significantly. Design of a digitallycontrolled llc resonant converter.
Simulation and analysis of llc resonant converter using closed loop pi controller g. Proportional resonant controller with resonant harmonic. Resonant harmonic generation in algaas nanoantennas using. Quasiresonant pwm controller ice2qs03 functional description version 2. Above all techniques are used for harmonic reduction in case of inverters. Controller v out h bridge resonant tank rectifier c f1 c f2 r o fig. Proportional resonant controller the inverter is a singlephase system. Letter english np trade 15 external power supplies for one ps 124 extron provides 12 volt power supplies with many products, but when power supplies are shared, the unused power supplies are tossed aside and could end up in a landfill.
This family of circuits may be configured to provide control in either voltage or current mode operation, with a separate overcurrent shutdown for fast fault protection. Quasiresonant pwm controller infineon technologies. Resonant power supply the inductive components itacoil collaborates with electronic designers in the design of inductive parts in order to contribute to the attainment of the best results in llc resonant smps projects. Ncp1207 pwm currentmode controller for free running. Another advantage of the llc resonant converter is that it can operate under zvs condition over the whole load resonant converter topologies and features llc resonant acdc switchedmode power supply using the mc56f80 and mc56f8257, rev. Digital control of a seriesloaded resonant converter. Designing a mediumpower resonant llc converter using. This approach will remove the need to transform the singlephase system into the rotating reference frame in dq coordinates for the pi controller. The l6599at is an improved revision of the prev ious l6599a.
Tuning rules for proportional resonant controllers article pdf available in ieee transactions on control systems technology 235. The application research of proportional resonance control. This book is devoted to resonant energy conversion in power electronics. As disturbance rejection is a main concern in nanopositioning applications, the control scheme is tested for its disturbance rejection performance.
This type of inverter produces an approximately sinusoidal wave form at a high frequency,ranging from 200hz to 100khz. The analysis and implementation of proportional resonant. Energy efficient power supplies engineered for ultimate. In a softswitching converter, switching occurs when voltage andor current values are zero, thus significantly improving converters efficiency. The transfer function of this controller with sinusoidal internal model is the pr current controller gprs is represented by. The investigated control is based on resonant controller.
Consistent with an example embodiment, there is a controller for a resonant converter, wherein the controller is configured to operate the resonant converter in a high power mode of operation by adjusting a first control parameter to vary the output power and a low power mode of operation by adjusting a second control parameter to vary the output power. In the proportional resonant controller, the proportional gain is used to adjust the gain for the entire frequency signal, at the same time the resonance gain provides the desired gain for a particular frequency. As shown in figure 2, the start cell consists of a high voltage device and a controller, whereby the high. A secondorder controller for resonance damping and. This allows constant frequency pulse mode topologies width modulation in combination with. Due to its inherent skip cycle capability, the controller enters. Llc resonant converter for battery charging application g. The resonant controller parameters tuning, which is based on the generalized stability margin criterion, is detailed in this chapter. Stability of gridconnected inverter with lcl filter. The strategy consists of a proportionalresonant pr controller. Implementation of pi controller for fourth order resonant. The digital frequency reduction with decreasing load enables a quasiresonant operation till very low load. D1 to d4 are antiparallel diodes across these switching devices.
The research presented in this thesis addresses the practical implementation of a digital controller for a seriesloaded resonant converter slr. The power supply employs full bridge resonant llc with phase shift operating at ramp up, light load, low output voltage. Though various types of resonant converters have abundant preferences inoperating with a high switching frequency and low switching losses in that llc resonant converter which combines the advantages of the src. Principle of phase shift control the dcdc resonant lcl converter lclrc is derived by adding an inductor l2 in series of the conventional parallel resonant converter, as shown in fig. Power electronicsfa5571 serieslow standby power quasiresonant controller features. The simulation diagram of the transfer function is shown in figure 3. Quasiresonant operation, low noise and high efficiency. With an integrated active x2 capacitor discharge feature, the ncp41 can enable no. Tida00381 360w phase shift full bridge resonant llc with. The need for high performance power supply systems for led lighting and, in general, the increasingly greater request for. The 3 kw gridconnected pv inverter was modeled and simulated in simulink with plecs blocksets.
Roman stuler this document describes the design procedure needed to implement a mediumpower llc resonant acdc converter using the ncp95 resonant mode controller. Phase shift resonant controller programmable output turn on delay. According to imp, if the closedloop stability is guaranteed, then the resonant controller defined in 1 ensures zero. This document aims to simplify this task, and make it easier to. It is a doubleended controller specific to seriesresonant half bridge topology. Simulation and analysis of llc resonant converter using. The improved digital frequency reduction with proprietary novel quasiresonant operation offers lower emi and higher efficiency for wide ac range by reducing the switching.
The grid voltage was set to 325 v peak 230 v rms, the dclink voltage was set to 360 v and the reference current was set to 18. A robust multiresonant pr regulator for threephase grid. Design of a digitallycontrolled llc resonant converter jiawei huang1, shunchung wang 2 and yihua liu1 1national taiwan university of science and technology, taipei, taiwan, r. Ice2qs03 is a quasiresonant pwm controller optimized for offline switch power supply applications such as lcd tv, crt tv and notebook adapter. Introduction the problem of global warming has attracted considerable attention in recent years, and requirements for energy savings in all electronic products, and regulations prescribing the amount of standby power per product type and the like are becoming more and more severe with each passing year. Zero the uc3879 controls a bridge power stage by phase delay available shifting the switching of one halfbridgewith respect compatible with voltage mode or current to the other.