Spelling suggestions: "subject:"invertors"" "subject:"convertors""
1 |
Inteligentní instalace v domácnosti s využitím nezávislých zdrojů / Home Smart Wiring with Independent SourcesDoktor, Viktor January 2016 (has links)
The output of our work is complete proposal of the building wiring, the photovoltaic power plant proposal and technical report. In the first part we find the theoretical information concerning the proposal of the house wiring, explanations of basic terms and principles of technical documentation. We can find also an overview of known intelligent systems and a brief description. In the second part we describe itself proposal of concrete building, step by step. We can find a description of a created program to control building. The third part is focused on theoretical information about photovoltaics. Here we explain the basic principle, the limits of technology, materials and the panel structure. In the fourth part we proceeded to the actual plant proposal. Here we find the principle and a block diagram of system and description of the components of the plant, evaluation of production and energy consumption. Drawings of the technical documentation wiring as a photovoltaic power plant, distributor scheme and its layout can be found in the technical report, in Attachment.
|
2 |
Dynamic analysis model of a class E2 converter for low power wireless charging linksBati, A., Luk, P.C.K., Aldhaher, S., See, C.H., Abd-Alhameed, Raed, Excell, Peter S. 07 January 2019 (has links)
Yes / A dynamic response analysis model of a Class E2 converter for wireless power transfer applications is presented. The converter operates at 200 kHz and consists of an induction link with its primary coil driven by a class E inverter and the secondary coil with a voltage-driven class E synchronous rectifier. A seventh-order linear time invariant state-space model is used to obtain the eigenvalues of the system for the four modes resulting from the operation of the converter switches. A participation factor for the four modes is used to find the actual operating point dominant poles for the system response. A dynamic analysis is carried out to investigate the effect of changing the separation distance between the two coils, based on converter performance and the changes required of some circuit parameters to achieve optimum efficiency and stability. The results show good performance in terms of efficiency (90–98%) and maintenance of constant output voltage with dynamic change of capacitance in the inverter. An experiment with coils of the dimension of 53 × 43 × 6 mm3 operating at a resonance frequency of 200 kHz, was created to verify the proposed mathematical model and both were found to be in excellent agreement.
|
3 |
Eficiência energética em sistemas de abastecimento de água usando bombas de rotação variável / Energy efficiency in systems of water supply using bombs of changeable rotationMakino, Daniel Lucas, 1985- 20 August 2018 (has links)
Orientador: José Geraldo Pena de Andrade / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Tecnologia / Made available in DSpace on 2018-08-20T03:35:00Z (GMT). No. of bitstreams: 1
Makino_DanielLucas_M.pdf: 8638175 bytes, checksum: 015ab58ccd2917a68b2de9853da1f45a (MD5)
Previous issue date: 2012 / Resumo: No Brasil, assim como na grande maioria dos países emergentes, o saneamento básico, na atividade de abastecimento de água, tem sofrido avanço tecnológico e estrutural aplicado de forma precária e pouco expressivo ao longo da história, devido à carência de recursos para operação e manutenção adequadas. Por essa e outras razões tem-se culminado o tardamento da melhoria contínua da eficiência ao longo de todo o processo, tendo, por consequência, perdas significativas do volume de água (relação dos volumes produzidos com os consumidos ou faturados) e elevado consumo de energia elétrica. A energia elétrica é o segundo insumo mais utilizado no processo produtivo do setor de saneamento, representando aproximadamente 2,5% da matriz energética do país e aproximadamente 50% dos custos operacionais de uma companhia. Analisando a magnitude e a importância que a eletricidade representa ao setor de saneamento, o que o saneamento representa à matriz energética e o que o custo do consumo da eletricidade representa nas despesas das companhias, diagnostica-se que a eficiência no uso desse tão importante recurso beneficia todas as partes associadas, bem como propícia o alcance de um desenvolvimento cada vez mais sustentável. Visando o alcance dessa finalidade, o emprego de inversores de freqüência em sistema de bombeamento atualmente vem se tornando um aspecto fundamental para a otimização do consumo de energia elétrica e da operacionalidade do sistema. Portanto, o objetivo principal desse trabalho consiste em estudar e analisar a eficiência energética de máquinas hidráulicas de velocidade de rotação variável. Para isso será especificamente retratada uma investigação de um setor do sistema de abastecimento de água do município de Limeira-SP / Abstract: In Brazil, as well as in the great majority of the emergent countries, the basic sanitation, in the activity of water supply, it has suffered technological and structural advance applied of precarious form and little expressive throughout history, due to lack of resources for adequate operation and maintenance. For these and other reasons have occurred the delay of the continuous improvement of the efficiency throughout all the process, having, for consequence, significant losses of water (relation of the produced volumes with the consumed or invoiced volumes) and high consumption of electric energy. The electric energy is the second product more used in the productive process of the sanitation sector, representing approximately 2,5% of the energy matrix of the country and approximately 50% of the operational costs of a company. Analyzing the importance that the electricity represents to the sanitation sector, and what the sanitation represents to the energy matrix, and what the cost of the consumption of the electricity represents in the expenditures of the company, it is diagnosised that the efficiency in the use of this so important resource benefits to all the parts associates, as well as it makes possible the reach of a development each time more sustainable. Intending this purpose, the application of frequency invertors in pump systems currently it comes becoming a essential aspect for the efficiency of the consumption of electric energy. Therefore, the main objective of this work consists of studying and analyzing the energy efficiency of hydraulical machines of speed of changeable rotation. For this specifically will be portraied an inquiry of a sector of the system water supply of Limeira-SP / Mestrado / Tecnologia e Inovação / Mestre em Tecnologia
|
Page generated in 0.0304 seconds