How to repair and service Off Grid Hydrid solar Inverter/UPS | Su-Kam 6.25KVA

MARCA SU-KAM Off Gr solar inverter is a highly efficient Inverter having the solar priority on the system. The inverter is designed to first charge through the panel and thereafter through grid if available. The low THD and low no load current in system helps optimizing its performance. Su-Kam’s three phase hybrid solar Inverter supplies pure power, which is actually purer than even the power supplied by the grid, and is 100% safe to run the most sophisticated, expensive and sensitive office equipment, silently. It has already established itself as a most reliable option to Generators at banks/ATM’s, hospitals, petrol pumps, shopping malls to name a few.
LINK
www.sukam-solar.com/

A Study on the Design and Evaluation of High Power Induction Lamp System -Young-il Chung

A Study on the Design and Evaluation of High Power Induction Lamp System
Young-il Chung
Dept. Information and Communication Engineering
Graduate school Wonkwang University
Abstract
Currently, road lightings are installed with less than 400W of existing metal halide lamps. These road lightings are being replaced by energy-saving lightings. Induction lamps are expected to be more actively replaced with targets for tunnel lighting and high ceiling lighting. Therefore, it is necessary to develop high efficiency, high power induction lamps system. In this study, the discharge tube design, lmap gas, lighting circuit, and lighting fixture were designed for the high power of the induction lamps. And Induction lamp system was optimized through electrical, optical, thermal characteristics analysis and simulation. For the development of the high power induction lamp, the induction lamp was fabricated according to the design factors such as gas type, gas pressure, discharge tube, ferrite core size, amalgam, and driving frequency after the improvement of the existing process.

In addition, the design and manufacture of the lighting circuit for the high power induction lamp were carried out. The light distribution characteristics through the optical design of the lighting fixture were compared and analyzed, and the illuminance distribution characteristics were simulated to develop the optimized high power induction lamp system. The discharge tube size of the high power induction lamp was 62mm, and the gas was optimized to Kr 100% and gas pressure 300 ~ 350[mmHg]. When the indium amalgam was applied, the induction lamp maintained the same power. As a result, optimization of the induction lamp, lighting circuit, and lighting fixture was completed in accordance with the rating. The characteristic analysis through the design of the lighting circuit for the induction lamp proceeded to improve and supplement. Based on the optical characteristics of the induction lamp and the system effect according to the driving frequency of the lighting circuit, the driving frequency was optimized to 135kHz. An optical simulation was performed according to the distance between the lamp and the reflector by using the OptisWorks program. and illuminance simulation was performed for each height according to the light distribution by using the Relux program. As a result, the high power induction lamp high ceiling fixture was completed.

In conclusion, Based on the high power induction lamp, ligthing circuit, lighting fixture optimization study was to present a guide for design and evaluation of induction lamp system. It is expected to be applied to additional induction lamp research and development in future.

SOLUCIONARIO DE MAQUINAS ELECTRICAS CHAPMAN 4 ed

LINK ORIGINAL
http://m4-fim.blogspot.com.br/2011/08/solucionario-de-maquinas-electricas.html

LINK DIRECTO
https://sites.google.com/site/mecanicafim/mecanica/ElectricMachinery4edChapman.rar?attredirects=0&d=1

Analysis and Multi-Objective Optimization of Multi-Cell DC/DC and AC/DC Converter Systems ETH ZURICH MATTHIAS JOACHIM KASPER-2016

Analysis and Multi-Objective Optimization of Multi-Cell DC/DC and AC/DC Converter Systems

 A thesis submitted to attain the degree of DOCTOR OF SCIENCES of ETH ZURICH presented by MATTHIAS JOACHIM KASPER-2016 
ETH Zurich
Power Electronic Systems Laboratory
Physikstrasse 3 j ETL I14
8092 Zurich j Switzerland
http://www.pes.ee.ethz.ch
 Abstract
One of the key enabling technologies behind many global megatrends, which are a ecting our lives as individuals and as a society in many different areas, is power electronics. Prominent examples are the shift from conventional energy sources to renewable energy sources, the reduction of greenhouse gas emissions due to the electri cation of mobility, and the trend towards cloud-computing in the information technology area, which are all based on the development of cost-e ective, e cient and compact power electronic systems. In order to ful ll future requirements for power electronic systems, it is therefore of great importance to identify new ways to develop systems with higher e ciency, power density, and reliability.

 The analysis of relevant literature reveals, that improvements of power electronic systems are to a great extent either based on the improvements of speci c components or on the modi cation of known control algorithms and/or topologies. These improvement processes, however, are of evolutionary nature and are not going to provide significant steps of performance improvements compared to today's solutions for the foreseeable future.

LINK THESIS
https://www.pes.ee.ethz.ch/uploads/tx_ethpublications/Thesis_Kasper_MC_web_version.pdf

ELECTRIC CIRCUITS PROF.CHOI