1,749,404 research outputs found
A power engineering and renewable energy engineering training facility utilising SMA’s Sunny Island Inverter
Full text linkMurdoch University’s engineering department has conceptualised the development of a training system for renewable energy and power engineering students based upon SMA’s Sunny Island inverter. The inverter operates using the droop control algorithm in which the control of real power flows alters network frequency and the control of reactive power flows alters the network voltage. By controlling the network frequency, the Sunny Island inverter is able to control the real power flows of other AC coupled inverters on the network. The system provides a simple, safe and localised learning tool whereby students are able to understand and interact with the system to understand the similarities in operation between the Sunny Island network and a large electricity network. The conversion of the existing system to a Sunny Island system involved the redesign and reconfiguration of a number of existing components in order to ensure compatibility with the new Sunny Island network. A number of compatibility issues were addressed and solutions presented to maximise the use of existing components and implement changes which allow a fully functional system in the future. A monitoring system was required to maximise the educational value of the system and enhance the visualisation of the Sunny Island’s operational characteristics. It was determined that SMA’s monitoring equipment was not capable of the sample rates required to detect transients in the AC network. A second monitoring system has been proposed utilising high-speed data acquisition equipment that is able to monitor at approximately 100 samples per cycle. This report sets a precedent for future work related to the training system’s physical development and allows for the continued development of the system into a fully-equipped Sunny Island system which is equipped with photovoltaic, wind and diesel generators; and whose operation can be visualised through the associated monitoring system
Sunny Stutzman
No full textSunny Stutzman grew up on his parents’ farm in Sangerville, Maine. Sunny’s father, Sid, was also a musician and song-writer, and the pair formed the “Doughty Hill Band,” which still performs and records. The band also features Sunny’s wife, Tracy, and Brian Smith. Sunny, though he carries on his parents’ love of farm life and music, did not follow in their footsteps and become a farmer. Instead, after completing a BA at the University of Maine-Farmington, he earned a graduate degree in Industrial Design from the Art Institute of Pittsburgh. He returned to Maine, worked in product development for Dexter Shoe and Moosehead Manufacturing before establishing Sunny Skies Design, which he currently owns. A more complete history of the Stutzman family is available at www.mainehighlandsfarmers.com/Stutzmanhttps://digitalcommons.library.umaine.edu/songstorysamplerartists/1042/thumbnail.jp
sunny-day-flooding-project/tutorials: v1.0.0
No full textFirst release of the Sunny Day Flooding Project tutorial repo. This repo contains a wiki of tutorials for constructing, programming, and deploying Sunny Day Flooding Sensors (SuDS) to measure coastal flooding
A Remote Area Power Supply (RAPS) Training Facility utilising SMA Sunny Island Inverter technology and National Instruments measurement package
Full text linkRAPS systems can sometimes be a cheaper alternative for supplying power than connection to a distant utility. Most assuredly it is a cleaner method of producing electricity than coal or gas constituents, provided the diesel generator is used minimally. A modern RAPS system will generally have several sources of generation, typically they might be; solar, wind and a diesel/petrol generator coupled with a battery to store excess power. The RAPS 2 system at Murdoch University was selected for an overhaul early in 2010. The system was redesigned to include new inverter technology from SMA. The new system relies on 3 separate inverters to convert the sources directly into grid quality electricity, as opposed to some traditional RAPS systems that would have most of its elements feed a DC bus that connected to a single inverter. This novel way of setting up a mini grid finds its niche in situations when the terrain or meteorological conditions make it impractical to have generation equipment all localised and a DC bus would have higher associated cable losses.
For such a system to be of educational benefit to tertiary students, the variables within the system must be able to be monitored. To this end an advanced measurement system has been designed and procured so that every measurable point in the upgraded system is available for display.
The measurement system was designed using National Instruments compact DAQ (data acquisition) hardware, one of the first of its type to be introduced to the university. The compact DAQ unit has been coupled with isolation equipment supplied by Dataforth, which already has an existing prevalence throughout the engineering department. The subsequent measurement program monitors 31 system variables at a high sampling rate to provide real time information on the state of the system. The measurement program also monitors relevant meteorological aspects such as the solar irradiance and local wind speed.
This report documents and details the steps taken to set up a new and novel RAPS system. Discussed are the approaches taken throughout the semester to project manage and facilitate progress. A detailed description is also given of the measurement and protection system that has been designed to allow students and the general public to get a good grasp on the performance of the system
In a little rosewood casket, Sitting on a marble stand
No full textvoiceSung by Sunny McCallon Ft. Smith, Ark.
July 13, 1965 Reel 373 Item 9
Collected by Sunny McCallon For M.C. Parler (Folklore Class Sing-A-Bout) Transcribed by Linda Humphrey
The Little Rosewood Casket
In a little rosewood casket,
Sitting on a marble stand Lies a package of love letters, Written by a true love's hand.
Will you go and get them,Sister,
Read them o'er again to me,
For at times I've tried to read them, But for tears, I could not see.
Read those gentle words so slowly That I not miss even one,
For the gentleman that wrote them,
His last word for me is done.
Read them o'er again, dear Sister, While I gently fall asleep,
Fall asleep to wake in Heaven,
Oh dear Sister, do not read.The Little Rosewood Casket continued
You have finished now, dear Sister Lay your head upon my breast,
Stay near by me, o dear Sister While I close my eyes in death.
When I'm dead and in my coffin,
And my friends are gathered round And my little bed is ready,
In the lonesome churchyard ground,
Place these letters and this locket Place together on my heart;
But the little ring he gave me From my finger ne'er must part.
When I'm dead and in my casket And my shroud around me lay And my little bed is ready In the cold and silent grave,
Tell him I never blamed him,
No unkind word was said,
Tell him not to drink, dear Sister, When I'm numbered with the dead.
Miss McCallon learned this from her mother and great aunt.Funding for digitization provided by the Arkansas Humanities Council and the Happy Hollow Foundation
Sunny Fratto interview, February 26, 1976 (audio - 2 of 2)
No full textCarbon County Project - Sunny Fratto interviewed by Ralph Sanich, February 26, 1976 (audio - 2 of 2
Soo Sunny Park: Unwoven Light 001
No full textThis exhibition, which was featured in the Robert and Elaine Stein Galleries at Wright State University, featuring works by Soo Sunny Park. This exhibition ran from September 15 to October 13, 2013. Using light and sculpture, Park transforms the gallery into a shimmering expanse of light, shadow, and color.https://corescholar.libraries.wright.edu/restein_exhibitions_all/1261/thumbnail.jp
Jimmy Martin & the Sunny Mountain Boys
No full textPhotograph of Jimmy Martin & The Sunny Mountain Boys performing on stage at Roanoke Bluegrass Festival, at Cantrells Horse Farm in Fincastle, Virginia. Jimmy is playing the guitar with Bill Tolbert (mandolin), Bill Emerson (banjo), and Bill Yates (bass)
Q&A on Sunny Singh’s short story A Cup Full of Jasmine Oil
No full textWith its rich semantic texture and evocative imagery Sunny Singh’s short story A Cup Full of Jasmine Oil invites various readings. The story tells how a young girl is both attracted and confused when her grandmother’s neighbor, who lives in a lesbian relationship, massages her skull and oils her curly hair. When the grandmother at one point forbids the oiling sessions, the girl suddenly becomes aware of hidden meanings and intuitions associated with this practice. The essay juxtaposes a reading of the story from a more conventional western perspective with an interpretation from the point of the Indian system of aesthetics based on rasa. From this double perspective, it discusses various stylistic and thematic aspects of the story. Diverging interpretations are presented of the role of the characters, the functionality of their characterization, and the use of description and suggestion to evoke the semantic framework of the story. The juxtaposition of two readings was prompted by a discussion with the author during a conference panel on rebellion in modern Indian literature and film. To prevent the impression of imposing a “scholarly” reading on a more “intuitive” reading, the essay continues the dialogue with the author and invites her to react to the reading and discuss the notion of an “Indian” aesthetic model, its relevance for her writing, and current critical approaches to modern Indian fiction. In her response, Sunny Singh explains how the theme of the story was prompted by her perception of the sharing of knowledge of sexuality and intimacy in a tightly-knit Indian social context. The discussion with the author extends beyond the specific story, and she presents her views on how her scholarly knowledge of modern Indian culture stimulates her in her creative work. Thereby, it aptly frames the exploration of a reading of A Cup Full of Jasmine Oil from the perspective of Indian literary aesthetics
Characterization Of A Continuous Wave Laser For Resonance Ionization Mass Spectroscopy Analysis In Nuclear Forensics, LCDR Sunny G. Lau, USN [video]
No full textThesis presentation by Sunny G. Lau, USN
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