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In this paper, a single stage highly efficient photovoltaic grid interconnected charging infrastructure has been designed for off-board DC charging for electric vehicles. This paper starts with the design of a single phase H-bridge quasi-z-source inverter (qZSI), component design and the pulse width modulation technique used. Then it discusses the control techniques used to control the power flow...
Design of experiments (DOE) is a systematic, rigorous approach to engineering problem-solving that applies principles and techniques at the data collection stage so as to ensure the generation of valid, defensible and supportable engineering conclusions. It has been used in manufacturing environment for decades to investigate factors affecting a process response under the constraint of a minimal expenditure...
A novel Hybrid Energy Storage System (HESS) for Electric Vehicles (EVs) is proposed in this paper. It consists of a battery pack and an ultra-capacitor module (UC), which are suitably coupled through a Three-Level Neutral-Point Clamped Converter (NPC). Particularly, although the UC is integrated within the DC-link, its voltage can be varied within a wide range, thus assuring its full exploitation...
This paper discusses, how current trends in the area of information, communication and control technologies (ICCT, e.g. Industry 4.0, Cyber-physical systems) are influencing the profile of an educational curriculum in the area of Industrial Automation engineering. The approach implemented by the University of Applied Sciences Emden/Leer in Germany, introducing a dedicated Master degree, as well as...
This paper presents a fabrication method of multi-graphene box structure by a nanomanipulation in a Field Emission Scanning Electron Microscope (FESEM). To bend the multi-graphene in plastic deformation region, the bending stress were measured using a silicon cantilever based on the nanomanipulation. In this study, defects were introduced inside the multi-graphene on the folding line of the multi-graphene...
The paper presents some experimental measurements carried out in an industrial scale prototype of Permanent Magnet Heater, PMH. The heater has been designed for the induction heating of aluminum billets with high efficiency. The experimental results are compared with the quantities calculated for the optimal design of the system and presented in a previous paper by the same authors. The design was...
This paper presents a simulation of an ambulatory processes using timed Petri net (TPN). The simulation considers the flow of patients in the biggest Brazilian cardiology hospital. The TPN is used as a decision support system (DSS) in order to improve the processes, to reduce the waiting time of the patients in the ambulatory and in this way to assure a high quality service to the patients. Simulations...
The mitigation of power quality issues by means of customized power conditioning systems are of growing interest in recent years. The electricity supply is exposed to more frequent power quality problems, especially due to the steadily increasing integration of decentralized power generation, penetration of renewable energy, and deployment of non-linear converter-based loads. Active power filters...
The authors aim at developing a wide angle fovea sensor by which a gaze point and magnification around it are variable in a field of view (FOV) without mechanical parts. Moreover, this sensor can gaze at not only a single point but also multiple points simultaneously. In order to achieve these functions, we apply liquid crystal (LC) for lens materials and control its distribution of optical refraction...
The paper presents the design of a new device to heat a magnetic nanofluid in-vivo. The optimal design of the device has been carried by coupling Finite Elements (FE) solutions and various multi-objective optimization algorithms based on Non-dominated Sorting Genetic Algorithms (NSGA). The theoretical heating rate of the nanofluid, as resulting from the analytical solution that describes the heating...
With the increasing computing power and network capacity, distributed automation systems are facing new challenges of handling massive amounts of distributed nodes within tight real-time constraints. The industrial cyber-physical systems is considered as the key to solve these complexities. In distributed industrial automation systems, there exists several execution semantics. In this paper, all existing...
Induction heating technology is leading technical advances in home appliances due to the benefits inherent to the contactless energy transfer including high efficiency, fast heating, safety, cleanness and accurate control, among others. Recent advances are aimed at developing high efficiency and performance converters that allows improving current applications and enabling new applications of induction...
This paper presents the master-slave system which is composed of multi degrees of freedom (DoF) forceps robots. In minimally invasive surgery, there are some advantages for patients because incision is small. However, it is difficult for surgeons. Therefore, in order to support surgeons, surgical robots are studied and developed. Although conventional surgical robots have high position accuracy, the...
This paper deals with a new ultra-efficient circuit for the individual maximum power point (MPP) tracking of an unlimited number of photovoltaic strings. The circuit generates a DC output voltage and can be combined with common DC-AC solar inverter circuits. The necessary blocking voltages of the transistors are far below the maximum string voltages, which yields to low losses and small passive components...
Recently the main requirements found in the market are further downsizing and higher efficiency of power conversion systems. Enhanced power density of the power modules will be the key to succeed. The increasing package reliability in higher junction temperature operation will be the major challenge. By further improvement of the chip characteristics and the development of new high reliability package...
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