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.
This paper presents a power reference modifier for seamless transfer considering the power balance in the parallel operation. When the PCS (Power Conditioning System) is disconnected from the grid, the PCS should operate in the stand-alone mode to supply energy to the critical loads. If multiple PCSs work as one PCS, slave PCSs maintain the current control mode even if master PCS change its control...
A hierarchical energy management system (EMS) for a residential power router is proposed to further reduce costs and stabilize the voltage of a load. There are ten modes of the EMS including three grid-connected modes and seven islanding modes. The state machine diagram shows the transition into and out of these modes. These transitions are based on switching criteria, over generation conditions,...
This paper proposes a dual-active bridge (DAB)-based isolated microinverter topology with integrated energy storage capability. A control strategy involving dynamic variation of the phase-shift allows twice line frequency energy buffering to be handled on the high-voltage secondary side, resulting in considerable reduction in decoupling capacitance requirement. Being a DAB-derived structure, most...
Use of renewable sources of energy for charging of electric vehicle(EV) batteries have generated tremendous interest. The use of off-board DC chargers to reduce the weight and increase space inside an electric vehicles has been an important area of interest. Harvesting solar energy to charge electric vehicle batteries can result in large inefficient systems when multiple power conversion stages are...
It is expected that wide-bandgap devices like silicon carbide MOSFETs and gallium nitride HEMTs could replace Si devices in power electronics converters to reach higher system efficiency, e.g., a 3-phase 380VAC bidirectional battery charger for electric vehicles. This paper uses the conventional half-bridge LLC topology to build a 10kW all-SiC bidirectional charger. As a well-known topology for the...
In this work, a Fault Ride-Through control scheme for a non-isolated power topology for Hybrid Energy Storage Systems in a DC microgrid is presented. The Hybrid System is created from a Lithium-Ion Battery and a Supercapacitor Module coordinated to achieve a high-energy and high-power storage system; it is connected to a DC link to interface to the outer system. The power topology under consideration...
Spontaneous network are called sometimes as accidental network formed by nodes which have mobility nature allocated in close proximity which connect to each other share resources and services. The creation of network with security concern is a point of issue in wireless network. The work aims to create network in secure manner. The updations of the nodes and further communication in the network to...
A standalone 3-phase half-bridge multilevel inverter with simple basic unit cells coupled to solar power generation is proposed. This proposed inverter is able to operate in either charging mode or inverter mode, which is suitable for solar power generation using photovoltaic modules. The active switches (power MOSFET) in this proposed inverter is operating at fundamental or twice the fundamental...
This paper presents the disturbance rejection of peak current-mode control for bidirectional Buck-Boost converter using slope compensation. The equivalent circuits and transfer functions are derived for the peak-current mode control using small signal modeling. In order to utilize the benefits of peak current-mode controller and eliminate its drawbacks, slope compensation has been added. The derived...
In the last few decades, energy storage systems (ESS) have become a major research area in electric, hybrid-electric, and plug-in hybrid electric vehicles (EVs, HEVs, and PHEVs) [1]. ESS mainly consists of a battery and ultra-capacitor (UC) connected together to build a system with high energy and power that can provide a high speed and acceleration for EVs. Major characteristics of ESS systems are...
The energy storage (e.g. battery)is a key issue for traction applications like electric vehicles (EVs) or hybrid electric vehicles (HEVs). Battery for EVs/HEVs must provide higher power and energy density, smaller size, a longer cycle-life and a lower cost. In general, battery lacks power as required by EVs, fortunately that can be provided by capacitors. That necessitates development of a hybrid...
The equalization speed and efficiency are the key issues of battery equalization. In order to improve the equalization performance, this paper proposes an any-cell(s)-to-any-cell(s) equalizer based on bidirectional inductor converters. With inductor converter legs connected to each lithium-ion cell polarities, this topology can transfer energy from any cell(s) to any cell(s), which results in an enhancement...
This paper proposes a novel modular voltage balancing topology for an active battery management system (BMS). The proposed topology consists of two power stages. The first stage is composed by a switch network, which is responsible for selecting the battery that will provide energy and the battery that will receive energy. In the switch network, for each battery, are used two cells, which allow the...
A decentralized charging control of a multiple-receiver wireless power transfer (WPT) system is proposed and discusses in this paper. Different from charging battery alone systems through WPT technology, using an additional ultracapacitor (UC) combined with the battery alone system could both achieve the power requirement and a high efficiency. Then the charging control problem is converted into a...
This work presents a new topology for the matchingnetworks of an underwater wireless power transfer system.A class-D driver is used in resonance at fundamental and third harmonic frequencies. The double resonance helps reducing the reverse voltage stress at the diode rectifier. We present the analytical derivation of the proposed network and demonstrate the design procedure with an example. We also...
Society's' growth of use on mobile devices makes the study of batteries a really important subject. Mobile phones and electric vehicles are, among others, battery dependent devices. Li-ion cells are the main choice for battery dependent applications. Different charging of cells as they age put the balancing management systems on the spotlight as a study subject. This paper proposes a balancing management...
Photovoltaic PV panels are traditionally arranged in more than one modules in order to increase the power system; with the purpose of obtain the maximum power point a converter for each panel could be used, or a multi-input converter that is able to control independently each input. In this paper is proposed a multi-input topology based on the Flyback converter with the capability of regulate independently...
In this paper, the limits of a Four-Wires Three-Level Neutral Point Clamped (4W-3L-NPC) inverter used as the only interface between a Hybrid Energy Storage System (HESS) supplied by a renewable energy system and a MicroGrid are under investigation. The investigation focus on the power division and power exchange capabilities among a Redox Flow Battery (VRB) and a Lithium-Ion (Li-Ion) battery, the...
One of the most important obstacles of the Electric Vehicles (EVs) is low energy storage capability. Due to recent development of energy storage technologies, the energy storage capability of the EVs has significantly improved, which makes them ideal for having a significant contribution in smart grids. It is expected that dramatic increase in the employed EVs in the future power networks introduce...
To improve the energy quality, most of the renewable energy systems and DC motor drive systems include an energy storage element charged by the bidirectional Converter. This paper propose quad quadrants dc-dc converter with high gain voltage and has a smooth output current The low current ripple and high gain features result are helpful for devices. This paper propose bidirectional DC-DC converter...
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.