A HYBRID APPROACH FOR RURAL FEEDER DESIGN

In this paper, a population based approach for conductor size selection in rural radial distribution system is presented. The proposed hybrid approach implies a particle swarm optimization (PSO) approach in combination with mutant property of differential evolution (DE) for conductor size selection in radial distribution system. The conductor size for each feeder segment is selected such that the total cost of capital investment and capitalized cost of energy losses is minimized while constraints of voltage at each node and current carrying capacity of conductor is within the limits. The applicability and effectiveness of the proposed method is demonstrated with the help of 32-node test system

Testing of a flat conductor cable baseboard system for residential and commercial wiring

The results of extensive testing (mechanical, electrical, chemical, environmental, thermal, and analytical) are reported for a flat conductor cable baseboard system for residential and commercial wiring. In all of the tests, Underwriters Laboratories (UL) Standards, UL Tentative Test Programs, or Accepted Engineering Practices were followed during test selection, test setup, and test accomplishment

Dynamical generation and detection of entanglement in neutral leviton pairs

The entanglement of coherently split electron-hole pairs in an electronic conductor is typically not considered accessible due to particle number conservation and fermionic super-selection rules. We demonstrate here that current cross-correlation measurements at the outputs of an electronic Mach-Zehnder interferometer can nevertheless provide a robust witness of electron-hole entanglement. Specifically, we consider neutral excitations generated by modulating the transmission of an unbiased quantum point contact periodically in time. For an optimized modulation profile, an entangled state with one positively-charged leviton (a hole) and one negatively-charged leviton (an electron) gets delocalized over the two paths of the interferometer and is detected at the output arms. We evaluate the influence of finite electronic temperatures and dephasing corresponding to recent experiments.Comment: 5 pages, 3 figures, 1 page of Supplemental Materia

Musical direction of student end of year concert 2018

Musical direction of Wintec Song Arranging class of 2018 End Of Year Concert. A public performance of students' final arrangements from the semester 1 paper. The un-themed program, a selection of popular tunes from 1960s - 2018 was devised to offer students the opportunity to hear their arrangements performed live by a small orchestra comprised of piano, guitar, bass and drums, trumpet, alto sax, tenor sax and trombone and a string section of 3 1st violins, 2 second violins, 2 violas and 2 cellos. Prior to this performance the students were only able to hear their work played as a computer-generated audio file (far from ideal) so the concert provided an invaluable 'real world' experience. The performance was devised as a professional experience - the tutor acting as Producer and Musical Director/Conductor, the students becoming arrangers who also prepared their scores and instrumental parts ready for printing and performance within real-time deadlines to emulate a real-world work experience

Methods and ideas for the creation of 'transparent' music in the classroom

This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Methods and ideas for the creation of ‘transparent’ music in the classroom The aims of this port-folio are as follows; - To provide a coherent sequence of pieces and methods which can be used to create music in an educational context and also encourage students and teachers to develop their own creativity. - To provide pieces which develop student’s confidence in their own ability to create music in a variety of ways including composition, improvisation and creative leadership. - To provide exercises and pieces which help to develop the listening and appreciation skills essential for ensemble musicmaking. - To provide methods that enable the creation of ‘transparent music’. This is music in which the some, or all, of the decision making involved in the creation of a piece is accessible and apparent to an audience during its performance. This submission consists of a teaching book containing thirteen pieces/exercises, instructions giving guidance on their possible use in a teaching context and recorded examples. Also included are separate instructions where appropriate for the use of pieces in a concert or other non-educational setting and two essays giving context and background information on the ideas behind the pieces

Solid-State Transformers for Interfacing Solar Panels to the Power Grid: An Optimum Design Methodology of a High Frequency Transformer for dc-dc Converter Applications

Nowadays the use of power electronic interfaces to integrate distributed generation with the power grid is becoming relevant due to the increased penetration of renewable energy sources like solar, and the continued interest to move to a smarter and more robust electric grid. Those interfaces, which also provide a voltage step-up or step-down function, are of particular interest because renewable energy sources do not always have voltages compatible with the connecting grid. Among them, the so-called “power electronic transformer” or “solid-state transformer” (SST) is the focus of significant research. Advantages such as bidirectional power flow, improved system control, reduced size, and premium power quality at the output terminals, increase the interest of the SST for future electric grids. The SST consists mainly of two components: a high-frequency transformer (made out of advanced magnetic materials) and power converters (employing efficient power semiconductor devices like those based on silicon carbide (SiC)) to enable operation at frequencies higher than the grid frequency. This paper presents an optimum design method that can be employed to build a high-frequency transformer for a SST intended to interface a renewable energy source (e.g., a photovoltaic system) to the electric grid. Core material, geometry, and size will be analyzed in order to provide an optimum balance between cost, efficiency, thermal management, and size. Special consideration will also be given to the selection of the winding conductors given the skin effect associated with operation at high frequencies

High temperature solder device for flat cables

A high temperature solder device for flat cables includes a microwelder, an anvil which acts as a heat sink and supports a flexible flat ribbon cable that is to be connected to a multiple pin connector. The microwelder is made from a modified commercially available resistance welding machine such as the Split Tip Electrode microwelder by Weltek, which consists of two separate electrode halves with a removable dielectric spacer in between. The microwelder is not used to weld the items together, but to provide a controlled compressive force on, and energy pulse to, a solder preform placed between a pin of the connector and a conductor of the flexible flat ribbon cable. When the microwelder is operated, an electric pulse will flow down one electrode, through the solder preform and back up the other electrode. This pulse of electrical energy will cause the solder preform to heat up and melt, joining the pin and conductor

An overview of biodiesel energy

Over the last ten years’ attention to biofuels production has increased dramatically and become crucial. One of the main factors is the rise in world oil prices, coupled with the abatement of greenhouse gas emissions and concerns about energy security. Biodiesel is diesel fuel extracted and made out of animal fats, vegetable oils, or recycled restaurant greases. It is harmless, biodegradable, and generate fewer air pollutants than conventional-based diesel. This paper will be summarized the overview of biodiesel including. competitiveness of biodiesel, ii. biodiesel production and iii. engine performance using biodiesel