Electronics

Double-Switch Series-Resonant Cell-Voltage Equalizer Using a Voltage Multiplier for Series-Connected Energy Storage Cells
Series connections of energy storage cells, such as lithium-ion cells and electric double-layer capacitors (EDLCs), require cell-voltage equalizers to ensure years of operation. Conventional equalizers require multiple switches, magnetic components, and/or secondary windings of a multiwinding transformer in proportion to the number of series connections, which usually makes them complex, expens...


Line Loss Minimization Control in a Loop Distribution System Using Circulating Current Compensation and Reactive Current Suppression by a Unified Power Flow Controller
This paper describes line loss minimization control using the shunt and series converters of a UPFC (unified power flow controller) in a loop distribution system. The line losses in a loop distribution system are caused by the circulating current flowing in the loop and the mesh currents flowing to the loads. The authors have previously proposed a compensation method for circulating current usi...
Optimal Power Distribution on Decentralized Energy Networks with Battery Degradation Control
This paper proposes an optimal power distribution method on a decentralized energy network with battery degradation control. Because battery degradation is unavoidable in battery utilization, we solve the optimal power distribution problem by an MIP formulation to keep the battery degradation to a minimum.


Generation Expansion Planning Considering Mass Penetration of Renewable Energy Generation and Supply Reliability
In the future, renewable energy (RE) generation systems will be constructed and interconnected to the power system by nonutility entities such as generation companies and residential customers. Therefore, generation expansion planning (GEP) should consider the effects of RE generation. The purpose of this paper is to discuss the best GEP from the economic, supply reliability, and environmental ...
A Multiagent-Based Microgrid Operation Method
In this paper, we propose an autonomous microgrid operation using a multiagent approach. The proposed multiagent system consists of seven types of agent: a single microgrid controller agent (MGC), several load agents (LAGs), several gas-turbine (gas-engine) agents (GAGs), several photovoltaic generation agents (PVAGs), several wind-turbine generation agents (WTAGs), several battery agents (BAGs...


An FPGA-based Multiprocessor-Architecture for Intelligent Environments
In this paper we propose a SoPC-based multiprocessor embedded system for controlling ambiental parameters in an Intelligent Inhabited Environment. The intelligent features are achieved by means of a Neuro-Fuzzy system which has the ability to learn from samples, reason and adapt itself to changes in the environment or in user preferences. In particular, a modified version of the well known ANFI...
The performance studies on swallow-tailed naphthalene diimide derivatives in solution processed inverted bulk heterojunction solar cells
Two different soluble swallow-tailed naphthalene diimide derivatives were synthesized, 1,4:5,8-naphthalene diimides (NDIs), N,N′-bis-(1-butylpentyl)-naphthalenetetracarboxylic-1,4:5,8-biscarboximide (NDI-1) and N,N′-bis-(1-pentylhexyl)-naphthalenetetracarboxylic-1,4:5,8-biscarboximide (NDI-2). Thermal stabilities were also measured with thermal gravimetry analyser (TGA). Naphthalene diimide...

A Hybrid System Framework for Unified Impedance and Admittance Control
Impedance Control and Admittance Control are two distinct implementations of the same control goal but their stability and performance characteristics are complementary. Impedance Control is better suited for dynamic interaction with stiff environments and Admittance Control is better suited for interaction with soft environments or operation in free space. In this paper, we use a hybrid system...
RFID synchronisation for ambient services in a holonic and isoarchic control model
RFID technologies will increase the capabilities to interact, to react and to customise control systems with innovative possibilities. New control approaches should be proposed based on the use of emerging technologies that will allow their operability in manufacturing systems. A model for ambient control production systems is proposed, based on a set of holonic entities interacting through a s...

The European approach to addressing RFID privacy
RFID is being used increasingly in different applications in numerous industries. Many of these applications involve the collection and storing of sensitive data which should be treated accordingly. In the USA, consumer campaigns and the public atmosphere favouring privacy have influenced RFID system design by preventing piloting the solutions which may pose a risk to privacy. However, in Europ...
Energy consumption evaluation framework for passive RFID tag anti-collision algorithms
In passive RFID systems, tag receives energy for communication from the reader, in the absence of on-chip energy source. Hence, a good amount of energy is needed to be transmitted by the transceiver circuit to provide energy to the transponder. Hence, circuit-level energy consumption cannot be ignored in the total energy consumption evaluation of passive RFID systems. Previously, energy consump...

Unveiling the RFID business: a survey of the Finnish RFID sector
Radio Frequency Identification (RFID) technology has been employed in several industrial domains in closed systems, but wide-scale adoption has yet to be achieved. A significant share of RFID deployments is related to access control and payment solutions, although industrial RFID applications (e.g. tracking and product identification) are also gaining ground. At European level, Finnish companie...
Simulations of levelled RFID localisation for indoor moving objects
We propose to apply the efficient, cost-effective, interference-resistant levelled RFID localisation methods to compute the estimated position of a moving entity in real time within an indoor environment. Passive types of RFID tags affixed onto the floor are selected as known reference nodes as their cost and implementation are more efficient. The results of the simulation indicate that the met...
Experimental and simulation based study of an adaptive filter controlled solid state transfer switch
The most common power quality problems in electrical distribution systems are related to single phase to ground faults causing unbalanced voltage sags. One of the most widely used methods for sag detection is conventional method based on d–q transformation. However, this method has the disadvantage of missing the detection of single phase-to-ground faults, because this method uses a voltage s...
Femtosecond tunneling of polarons in Pb5Cr3F19
The complex dielectric constant/ac electrical conductivity was investigated as a function of frequency and temperature in Pb5Cr3F19. The system undergoes a ferroelectric phase transition at higher temperatures. At lower temperatures the real part of the complex ac electric conductivity was found to follow the universal dielectric response (UDR) σ′ ∝ νs, typical for hopping or tunneling of...