120 uppsatser · sida 7 av 8
Energibesparing vid frekvensstyrning av centrifugalpumpar ? en fallstudie
… by replacing the throttle valve with a variable speed drive, a frequency converter. The payback period was two years and two months and the present value for the total life cycle cost of the variable speed system was 662.566 SEK lower than for the throttled system. As a …
en studie om förutsättningar och konsekvenser för Köpings och Västerås hamn
… the ships to use electricity compared to the marine fuel. Without a frequency converter the installation costs for shoreside electricity is less expensive since the frequency converter corresponds to approximately 70 % of all the installation costs. By connecting only a few …
… reference network for a 12-bit PSAADC, Parallell Successive Analog to Digital Converter. A chip containing the design has been sent away for fabrication. Because of the long processing time, no measurement data are presented. The main specifications for the voltage reference …
… for motor drives applications. The technology is based on VSC (Voltage Source Converter) that uses a technique called PWM (Pulse Width Modulation). There are a lot of PWM patterns that have been examined, but not in the field of power transmission where ABB Power Systems is …
A feasibility study
This report is an outcome of a master degree project at Linköpings University in co-operation with Micronic Laser Systems AB. The purpose with this master degree project was to investigate how to implement a receiver in a data transfer system. The system consists of several data …
… production. Inthis report the technical and economical potential of a DC/DC converterplatform is investigated, in order to shorten the time of the design process.This is done in comparison with the present discrete type designs. PowerIntegrations offers a product, the …
Vem/Vad/Vilka påverkar?
… in package design can be dealt into four branches: raw material producers, converters, trademark owners and package designers. This study is empirical and its material was gathered with semi-structured interviews and questionnaires. We have used the theory of design process to …
… market that use analog input signal, but if one of them would be used a D-A converter is needed on the DSP card. The resultate of this thesis is an amplifier with 400 W output power, with 0.4% distorsion on 1 kHz and with 70% of the maximum signal. The report contains of three …
… for the reciever, at least a tranciever/reciever and a processor with DA-converter. Factors such as pricing, power cousumption and size should be take in consideration during the researchphase. Free2move had explicity said that they where intrested in a microprocessor from Texas …
… together two simple beds and forms double bed, concurrent that it goes that converters to two simple bed without needing to disassemble the product and be done invisible. A result with the work is a product that meets everyone the nonplussed requirements on function and cost …
… power of the trains was also studied. In addition, the power flow from the converter stations was analyzed. TPSS simulation times were nearly one minute, while the mean simulation time in TracFeed was four minutes. The simulations showed that there are possibilities of …
… measurement equipment, only HC, CO and temperature at inlet of first catalytic converter has been modelled. For the experiments a SI6 naturally aspirated petrol engine was used, and drive cycle tests were run with a S80 with automatic gearbox. MATLABs? tool for statistical …
… claim that the quail is more resistant to disease and a more efficient feed converter of feed to eggs than the laying hen. All of these qualities are very beneficial and especially in poor communities where quail has a potential of becoming an important food source. The …
Komponenter och konstruktion
… iTools from Eurotherm. The communication part includes information about a converter that converts EIA422 to USB. The cabinet was produced at a company, called VG Scienta, in Uppsala during the spring 2010. The construction of an additional climate-cabinet was necessary because …
… the most important areas of the course including rectifying, buck-/boost-converters and PWM-modulation. It is built as one sealed unit where all the electronics are built-in but visible and it has a connection board where students safely can connect the different circuits. The …
