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This research enhances the previous control method by utilizing an embedded controller (EC) to create a fuzzy logic controller (FLC) to reduce the power consumption of a notebook or netbook and to lengthen the battery life. Our control methods are all written in assembly language, so that there is no need to rely on any high-level application program for the FLC. Thus our design has greater efficiency...
This paper presents a novel control strategy for a direct drive interior permanent magnet (IPM) synchronous generator based variable speed wind turbine with controlled energy storage. The overall control system consists of a machine side converter controller, a bi-directional dc-dc converter controller for battery energy storage management and load side inverter controller for voltage and frequency...
Stand-alone photovoltaic (SAPV) system is more favourable than grid connected photovoltaic (PV) system in areas where extension of power grid is impracticable. However, the high set up cost of a SAPV system requires cost efficient solar energy harvesting methods. To improve the energy harvesting efficiency of a PV system, a large, centrally controlled PV array can be rearranged into smaller PV modules...
This paper describes experimental results aiming at analyzing lithiumion batteries performances with aging, for different state of charge and temperatures. The results are provided from electrochemical impedance spectroscopy (EIS) measurements on new and aged cells. A climatic test chamber is used during experiments to simulate the conditions of the temperature. Experimental data are plotted over...
This paper presents the performance comparison and transfer efficiency modeling and analysis of a 2-quadrant switched capacitor converter (2-Q SCC), a 4-Q SC Luo converter and interleaved SCC, applicable for hybrid electric and plug-in hybrid electric vehicles (PHEV) Energy storage system (ESS) applications. SCCs offer essential features of voltage step-down, voltage step-up, and bidirectional power...
Micro-grids that are infrastructure for implementation and utilization of renewable energy sources require high-power-density, high-energy-density storage. Composite Energy Storage System (CESS) is a combination of various energy storage technologies that offers not only above performance but also high efficiency and long life. For system management of CESS, problems of energy management and dynamic...
Battery is one of the most important energy storage devices in high power energy storage applications. It is widely used in the plug-in hybrid electric vehicles (PHEVs) and energy storage systems for renewable power generation such as wind and PV. In conventional series-connected high capacity battery string, due to the imbalance of battery cells, there are a few issues such as the cell damage due...
The goal of this paper is to address management problem of battery storage system in PEM fuel cell based hybrid power sources. Our idea of design is to utilize “feedback control” mechanism to handle possible dynamic uncertainty of hybrid power source introduced by battery failure or insert of a new battery. The detailed battery model and the converter model are derived to facilitate the development...
High penetration of Plug-in Hybrid Electric Vehicles (PHEV) are expected in the near future. Battery state information is essential in protecting the PHEV battery from harmful charging/discharging, and in optimal battery management. With accurate battery relaxation effect model, the battery νoc (open circuit voltage) can be obtained from direct measurements on the battery's terminal voltage and load...
Several topologies have been proposed for combining batteries and ultracapacitors (UC) to build a hybrid energy storage system (HESS). It is essential to quantify the performance benefits of these different circuit topologies. This will establish a metric for evaluating the performance of new topologies as well as providing the basis to select a certain topology and design a HESS optimized for the...
Clock synchronization is an important feature in Wireless Sensor Networks, as a common vision of time can be required in order to perform synchronous operations. In this paper we present a new version of the Dynamic Continuous Clock Synchronization protocol which offers a greater robustness and requires less power than the original protocol. The role of the Reference Node which sends periodic snapshots...
In this paper, we developed an adaptive route selection algorithm for a Mobile Ad-hoc Network (MANET). This algorithm has been realized and implemented for health monitoring applications with sensor nodes and a mobile robot. The health care devices include a body-pose estimation module, and a SpO2 and ECG sensor module. These sensor modules wore on individuals and the mobile robot itself form a mobile...
This paper presents a study related to a more efficient energy management between battery and Supercapacitors (SC) for Hybrid Electric Vehicle (HEV) applications. This idea is due to the present trend in the field, knowing that the major drawback of the HEV is the autonomy problem. Thus, using supercapacitors and battery with a good energy management strategy improves the HEV performances. The originality...
An accurate model of the elementary accumulation device is fundamental for sizing and controlling the battery pack to be used in electric and hybrid vehicles. Indeed, the implementation of such a model within the Battery Management System makes it possible to evaluate the status and the behavior of the battery pack in every condition and to apply a correct control strategy. This work shows the characterization...
To obtain highest efficiency in electric vehicles and to increase the lifetime of the traction battery, a battery backup system is mandatory. In this paper, the investigation of a system for an electric lift truck propulsion system consisting of Electric Double Layer Capacitors and a DC/DC-converter, is presented. Primarily, the super capacitor voltage range is analyzed comparing super capacitor,...
This paper presents a novel fully soft switched bidirectional PWM dc-to-dc. Providing soft switching conditions for all elements and minimizing the semiconductor elements are two of the most important properties of this converter. The proposed bi-directional converter is inserted as an interface circuit between DC bus and battery in a Hybrid Electric Vehicle to control the charge and discharge current...
Plug-in hybrid electric vehicles (PHEVs) have a larger battery pack which can be charged from an AC outlet. This paper deals with an integrated module which can power the electric propulsion machine (defined as Mode-1 further in this paper), can charge the battery pack during the process of regeneration (defined as Mode-2), can charge the battery pack from AC outlet (defined as Mode-3) and can be...
Plug-in hybrid electric vehicles (PHEVs) are an emerging technology in the market and are helping to offset the negative effects of existing transportation methods that primarily rely on fossil fuel sources. As PHEVs are being introduced into the market, renewable energy sources such as solar power are taking a larger part in the energy sector. A need for high efficiency battery charging is required...
Fuel cell is a kind of new power source which has advantages of high energy density, clean and quiet. To overcome the disadvantages of fuel cell such as low energy density and low response speed, hybrid structure including fuel cell and battery is often used. In this paper, a novel control strategy is proposed for the DC/DC converter which converts power from fuel cell to load. This new strategy is...
As distributed power sources seem to become increasingly popular in the near future, power electronics should be able to provide significant advantages in processing power from renewable energy sources using fast response and autonomous control. Fuel cells, photovoltaic devices and storage batteries sources produce a significant power in hybrid power structure. In this paper, the uninterruptible power...
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