The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Clock distribution in modern SoCs consumes a significant fraction of total chip power. To reduce clock distribution power, resonant clocking schemes, where an inductive reactance is used to cancel the capacitive reactance of global clock networks at a given resonance frequency, fo, have been proposed. Conventionally, such schemes are only suitable at high multi-GHz frequencies in order to be able...
In this paper, a control scheme for stand-alone voltage source inverters using resonant controllers in the 2-phase stationary frame of reference with a zero sequence controller is proposed. The proposed control scheme reduces the number of resonant controllers while achieves the same performance as existing control methods. The total harmonic distortion (THD) of the output voltage is improved over...
A segment control scheme of inductive power transfer (IPT) system for rail transit is proposed in this paper. In this scheme, the power supply range of primary coils along the track is segmented into several intervals and the several sets of pickups are installed aboard. When the vehicle runs, the switching frequency and the reference current of inverters is modulated with the position of the pickup...
This paper presents an adaptive proportional resonant (PR) controller for single phase grid connected inverter that adapts its control parameters to grid impedance variations. Forth order band bass filter is designed and then integrated with the adaptive scheme for on-line detection of any variations in the resonance frequency. The estimated frequency is then processed by statistical signal processing...
This paper is focused on the possibilities of implementing an auto-adaptive control, without a phase-locked loop circuit, for the operating frequency in an induction heating system with single-phase voltage source inverter and resonant L-LC load. Based on the phasor diagram of the equivalent resonant load under resonance condition, three possibilities have been identified to express an error to be...
This paper presents a multi-loop control strategy for parallel distributed generation (DG) units in standalone mode of operation. Indeed, an Adaptive Proportional plus Multi Resonant (Adaptive P+MR) controller is designed for the voltage control loop and a simple Proportional regulator is used for the inner current loop. The proposed frequency adaptive control structure is also prorogued to parallel...
This paper proposes a self-tuning controller for a multi-level inductive Electric Vehicle (EV) battery charger application. By controlling the energy injection frequency of the Inductive Power Transfer (IPT) system, multiple charging levels (4 in number) are achieved. Maximum performance is leveraged by the proposed IPT system using its capability of self-tuning the switching operations to the natural...
This paper presents the design and implementation of a power supply unit for zone-less induction cook-top. Here a control algorithm is also presented for tracking the user activity which includes misalignment of pan above the coil and removal of pan. The control algorithm is implemented using a DSP processor. The power supply consists of a power stage, control stage, and digital control algorithm...
In this paper, the design of a proportional resonant (PR) controller for the packed U cell (PUC) 5 level inverter is presented. The objective of the presented work is to present a better solution for current control in grid connected application of the investigated topology. A suitable LCL filter is designed along with the PR control scheme for grid connection. Simulation is performed in MATLAB®/Simulink...
This paper presents a Resonant Converter with high frequency transformer(HF) magnetizing inductance (Lm) considered as shunt inductance. The resonant network comprises of series branch (Ls&Cs) and shunt branch (Lp&Cp). Shunt branch inductance (Lp) of resonant converter is used as magnetizing inductance of HF transformer. HF transformer is designed in such a way that Lm is equal to Lp which...
In recent years, as an eco-friendly EV charging system, the wireless charging has become a topic due to the merits such as convenient, safety, and clean. In this paper, in order to realize a large-gap wireless charger which can communicate between the power feeding and receiving units without any additional communication device, a wireless power transfer (WPT) system using a single-ended push-pull...
Current control is the most basic control loop for a current controlled inverter-fed machine. Current controllers fall into two categories depending on the reference frames they operate in — rotating reference frame controllers, and stationary frame controllers. This paper introduces a novel current control technique for inverter controlled machines known as Local Vector Control (LVC). This control...
Induction heating (IH) appliances are widely used for industrial appliances and home electronics because IH has a lot of merits. Recently, wireless power transfer attracts attention as a promising industry. As for wireless power transfer, inductance is changed in accordance with power transmission distance or surrounding environment. Similarly as for IH, inductance and resistance as equivalent circuit...
This paper investigates the mutual interaction and stability issue of multi-parallel LCL-filtered inverters. The stability and power quality of multiple grid-tied inverters are gaining more and more research attention as the penetration of renewables increases. In this paper, interactions and coupling effects among the multi-paralleled inverters and power grid are explicitly revealed. An Interaction...
In recent years, there has been a rapid increase in the number of photovoltaic (PV) three phase inverter systems being to grid connected. Keeping the highly quality waveform and low harmonic distortion of the current waveform during abnormal condition is one of the most challenging. To achieve this target, a current control technique is carefully considered. This paper present a simple method to compensate...
Inductive power transfer (IPT) systems are often designed to achieve their highest efficiency at a fixed load value and at a fixed coil separation distance and misalignment. A variation in the position of the coils or the load value tends to drastically affect the efficiency, and therefore makes the designed IPT system not practical for applications that are mobile with variable loading conditions...
This paper presents a suitable output voltage control approach for parallel distributed generation (DG) units working in standalone operating mode. Indeed, an Adaptive Multi Resonant controller with weighted State Feedbacks is optimally designed for the voltage control loop while a Proportional regulator is proposed for the inner current loop. Thankful to its frequency adjusting ability, the proposed...
This paper proposes a control scheme for single phase inverter based systems. The inverter controller consists of two loops; the inner current control loop which is the faster one while the outer voltage / active and reactive power control loop is the slower one. A Lyapunov based inner (current) control is presented in this work which robustly tracks the reference current independent of the system...
This paper presents the basics, design and analysis of LCL filters for connection with the grid. Different topologies of filter are discussed along with their drawbacks. Various passive damping techniques for LCL filter are presented and analyzed by plotting the frequency response curves. Large rating, bulky size of LC filter acts as a disadvantage and thus was tried to be compensated by LCL filter...
This paper presents the design of new controller and modeling for a single phase inverter that must operate in island mode or disconnected from the grid within a microgrid. The inverter model is presented in small signal and the current loop controller and the comparative between two controllers for the voltage loop are designed. Considering that in this mode of operation the aim is to maintain the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.