6,020 research outputs found
Design of hybrid split-capacitors and split-inductors applied in positive output super-lift luo-converters
No full textThe DC/DC conversion technology has been developed very fast over the decades, and many new types of DC/DC converters are designed. As a very important part of the DC/DC conversion technology, voltage-lift (VL) technology has been widely used in design of DC/DC converters, and the theory is maturely built. While the output voltage of this kind of converters only increases in arithmetic progression when more stages are added. By using super-lift (SL) technique, the output voltage will increase in geometric progression. In this paper, a novel approach is introduced – super-lift Luo-converters armed with split-capacitors and split-inductors. By replacing the original capacitors and inductors with these split elements the output voltage will be lifted to another higher level. This is a very important contribution to the conversion technology by Professor Luo Fang Lin. In this report, formulas and simulation results are presented and analyzed.Bachelor of Engineerin
DC/AC/DC chopping converter
No full textThe purpose of this Final Year report is to provide a clearer overview to the student’s FYP Professor, Assoc Prof Luo Fang Lin of the knowledge and experiences the student has accumulated and how he has applied the theory he has learnt from his undergraduate course to meet the objective of the project. In this project, the student is required to design and build a DC-AC-DC chopping converter with a feedback controller to ensure that a constant output voltage of 33VDC despite fluctuations of input voltage (9.3VDC to 11.5VDC).Bachelor of Engineerin
Fig. 1. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A in Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China
No full textFig. 1. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A. Habit; B. Opened corolla with stamens and staminodes; C. One calyx lobe; D. Calyx and pistil. [Fang Wen 100803, IBK] [Drawing: Wen-Hong Lin]Published as part of Wen, Fang & Wei, Yi-Gang, 2014, Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China, pp. 9-19 in Candollea 69 (1) on page 11, DOI: 10.15553/c2014v691a2, http://zenodo.org/record/576184
An Analysis of <i>Judge Lin</i>
No full textBiography of Lin Wen Zhong Gong has another way to call, that is Judge Lin. The leading character is Lin Ze-Xu. This book is based on functionary experience of Lin Ze-Xu, with the captivating plots of court case, helping by highly skilled military attach\uc3\ua9s and chivalrous knights, and the history facts of Opium War. It makes Lin Ze-Xu\ue2s Confucian temperament and tragic mood more, also contrasts with author\ue2s sorrow and furiousness for the politics at the time. History, court case, martial arts\ue2\ua6\ue2\ua6etc. are essence of this book and it broadens the way of this writing style.
The topic of the thesis is \ue2An Analysis of Judge Lin\ue2. The following thesis will be divided into six different chapters. The introduction is Chapter one of the thesis, which is including researching motive and purpose, literature review of predecessors, researching version by existing information, raising questions, choosing research methods and arranging chapters. In chapter Two, I discuss the study of characters of Lin Ze-Xu, also makes a deep analysis of author\u27s purpose of writing him. In chapter Three, I analyze supporting actors and actress. Meanwhile, I illustrate author\u27s purpose of writing supporting actress because the author had different manner to describe supporting actress. Moving to the Chapter Four, I mainly focus on the plots of Judge Lin, and organize cases of Lin Ze-Xu and his subordinates to understand features of cases. In Chapter Five, I represent the causes of Opium War. China and England had difference of opinions of opium. Therefore, it is easier to comprehend what the author\u27s purpose is. In the last chapter I summarize the main points of the preceding chapters and confirm particularity of Judge Lin
Design of split-inductors applied in positive output super lift luo-converters
No full textAs the demand of the modern electronic devices and appliances are getting higher, the role of the converters with higher output and efficiency become wider for different industries. It has been the role of engineers to explore the converter topology to provide higher output voltage in simple design with less cost. There are quite a number of different ways of lifting output voltage in converter topology.The method that the author will be introducing is called “Split- Inductors Method”, where the
output voltage is totally dependent on the number of inductors used in the converter design. The
report will include a detail discussion about design and results of” split-inductors topology”,
applied to “Positive Output Super Lift Luo Converter” using software simulations and hardware
experiments.Bachelor of Engineerin
Fig. 2. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A in Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China
No full textFig. 2. – Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo. A. Natural hillside habitat; B. Natural habitat; C. Plant in natural habitat; D. Plant with cymes and flowers in cultivation; E. Frontal view of cyme and flowers; F. Anatomical dissections of the cyme, showing bracts, pistil and opened corolla; G. Lateral view of flower, calyx and pistil; H. daxial and abaxial views of calyx lobes. [D-H: Fang Wen 100803, IBK] [Photos: A-C: Fang Wen; D-E: Shi-Liang Mo; F-H: Wen-Hong Lin]Published as part of Wen, Fang & Wei, Yi-Gang, 2014, Primulina dongguanica F. Wen, Y. G. Wei & R. Q. Luo (Gesneriaceae), a new species from South China, pp. 9-19 in Candollea 69 (1) on page 12, DOI: 10.15553/c2014v691a2, http://zenodo.org/record/576184
Investigation of a super-lift luo-converter used in solar panel system
No full textWith the increasing energy shortage and environmental pollution, the studies and applications of solar power have attracted growing interest among researchers in the relevant field. Although solar power has many advantages such as cleanness, renewability and environmental-friendliness, it is still inevitably affected by the changeable sunlight and weather condition. As a result, the output of a solar panel tends to be unstable. Furthermore, if the voltage variation is too large, it will have bad effect on loads or power grid.
Super-Lift Luo-Converter has very high voltage transfer gain as well as many other advantages such as high efficiency, simple structure and low cost. A double closed-loop control has the ability to make the output voltage closely track a reference value. Therefore, in this project, a solar panel power system is designed using the Super-Lift Luo-Converter with a closed-loop control to obtain the desired output voltage. To make sure that the designed system met the design requirements, the open-loop and closed-loop simulations were carried out by using PSIM. The simulation results showed that the final output voltage was stable, which meant the designed solar panel system could effectively increase the stability of the output voltage.
This project not only attempts to reflect the current development trend of the renewable energy but also aims to introduce some innovations such as the use of Super-Lift Luo-Converter and closed-loop control. It is therefore hoped that the solar panel power system herein designed will have good prospects for application.Bachelor of Engineerin
Design of single phase grid-connected photovoltaic power plant based on string inverters
No full textRenewable energy systems : advanced conversion technologies and applications/ Fang Lin Luo; (and Hong Ye)
No full textxxviii, 851 hal.: ill, tab.; 23 cm
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