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The integration of renewable energy sources(RES) and electric vehicles' charging and swapping facilities can effectively improve the efficiency of clean energy utilization and carbon emission reduction. How to establish a reasonable energy exchange model of PV-based battery switch stations (BSSs) is still an important research field which is being studied. This paper focuses on the model building...
Decentralized control of a new harmonics distribution method for microgrid is presented in this paper. The compromise between voltage regulation at point of common coupling (PCC) and harmonics sharing is provided. The control algorithm that optimizes microgrid performance regarding these two factors is proposed and its implementation is described. The effect of small error in coupling impedance estimation...
This paper presents an enhanced particle swarm optimization (PSO) algorithm for Distributed Generation (DG) placement and sizing using multi-objective optimization concept. It is based on the combination of Evolutionary Programming (EP) and PSO. The merits of EP and PSO are combined together so as to achieve faster convergence and accuracy of the DG sizes. The quality of the solution is improved by...
Outdoor testing of photovoltaic (PV) modules plays a critical role in discovering the degradation modes, mechanisms and rates of materials, components and systems under real world climate conditions. The Solar Durability and Lifetime Extension (SDLE) center at Case Western Reserve University has established a highly instrumented outdoor test facility, the SDLE SunFarm. In order to study PV module...
The tandem rolling of hot metal strip is a complex industrial process that is quite energy intensive. In our recent work at the Universities of Pittsburgh and Central Florida we have investigated the application of a modern advanced control method to improve the quality of the process output, with the additional feature of a significant savings in energy. This paper describes our new control method...
The increasing share of distributed energy resources, which will be connected to electrical networks in the future, requires innovative network structures to ensure a reliable energy supply. The integration of electrical energy storage devices will become more and more important in this context. Within this paper, an energy storage management system will be presented, which uses the multi agent system...
A rising penetration of renewable energies and the resulting changes in the generation system render extensive grid reinforcements throughout Europe inevitable. Up till now grid reinforcements are mostly done using HVAC technology but for future extensions as for example in Germany HVDC technology is on the rise. To optimally integrate these future HVDC links into the existing AC networks the terminal...
A lab-scale hardware DC MicroGrid system has been designed and built as part of a suite of electrical grid simulation environments. It is intended for use as an educational tool and in research as a testbed for control strategy development. The testbed has the capability to rapidly transition between hardware and software simulation of the DC MicroGrid system and consists of three components: Software...
Recent days, technology searches for the betterment of the future generations. In a simple way they search for the easiest and cheapest way to electrify the whole world in a environment friendly way. Environment friendliness is obviously a great issue where day by day the world environment is getting polluted due to the toxics of the industry. In this case biomass energy can be a great solution to...
A major concern with future high penetration PV levels is the impact on electric utility power distribution systems due to abrupt changes in power generation caused by cloud shadows and the resulting voltage flicker. The time period of interest in this phenomenon is seconds. This paper describes the process used to obtain GPS time-stamped 1-second spaced maximum panel power output and solar radiation...
In Inner Mongolia of China, the generators in several power plants are experiencing a new subsynchronous interaction problem. It belongs to subsynchronous torsional interaction (SSTI) between the generators and HVDC, but has many different characteristics from conventional SSTI. This paper describes the different characteristics according to the actual recording. Preliminary analysis is made for the...
Optimal power tracking techniques are often employed to more effectively extract the power generated from photovoltaic (PV) modules. This paper examines the problem of adjusting PV module's position to maximize the incident irradiation, and hence, the power. It introduces a two-axis rotation control mechanism to track a PV module's maximum power based on the sun's azimuth and elevation angles. The...
Frequent Li-ion battery (LiB) field safety incidents on the officially approved models have caused big concerns on its safety and certification, however, little attention and study have given to the potential safety risk of the certified battery. We developed a battery safety risk assessment tool by using a modified FMEA method with the RPN concept. To validate this concept we applied the tool to...
A new charger control strategy for optimum charging of individual battery cells is proposed. The charger can directly charge individual battery cells based on their state-of-charge (SOC) using multilevel converter topology. In multilevel converter, individual cells are connected in series on the DC side of the converter. By choosing switching pattern and their duration in a combined manner, the charging...
In recent days, focuses on renewable energy sources has become very much popular. Due to limitations of reservation of conventional energy sources future generations have to search for alternative energy sources. Solar energy is one of the convenient renewable energy sources as the availability of the solar radiation is limitless. This research study aims to describe the design, fabrication and performance...
The Power & Energy Society of the IEEE helped launch the Community Solutions Initiative in 2009, to address the situation of energy poverty which has nearly 1.5 billion people with no access to the electric grid. Progress is reported on coordination with various 3rd world nation-specific development organizations, the CSI-developed 1.5 kW solar installation system which serves 80 homes, and development...
Current trends in the wind energy industry is to design, develop and manufacturing wind turbine of constantly increasing size and rated power, as well as wind parks of larger size and installed power. Knowledge of the wind turbine behavior during its operation is of critical importance in the design and planning stages of a wind farm in order to minimize the risks, as well as for grid integration...
This paper proposes a wireless sensor network based heliostats control method for an industrial scale solar cooking system. Even though different designs are available they have suffered from different problems especially regarding effective tracking, high cost and convenience and other constraints such as scalability and simplicity. This paper, therefore, describes an efficient design that overcomes...
This paper presents the design of a controller which electrifies vehicles by a direct methanol fuel cell. The project has been prepared based on a 1∶4 scaled model of a car. As part of this project, an electronic motherboard including control algorithms for wireless system monitoring and car control has been developed. For wireless communication between the vehicle and the PC, a connection has been...
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