Sökresultat:
1692 Uppsatser om Voltage feedback operational amplifier - Sida 8 av 113
Utveckling av högspänningskontakt
This report describes the development of a high-voltage connector at the request of Scandinova Systems AB in Uppsala. The development process is described from the making of a customer demand specification, to the making of drawings for the manufacturing of prototypes. Scandinova develops high-voltage modulators, hence the need for connectors that can handle very large power pulses. Their current connector has several weaknesses that may cause the connector to melt or catch fire. The development began with a number of studies that included the modulator structure and the current connector structure and functions.
Utformning av utskovskanaler och nedströmsslänter : En jämförelse av energidissipation vid överströmning av fyllnadsdammar
On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.
Miljöanpassade tjänsteresor. En kvalitativ studie av privata aktörers resepolicy
On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.
Arsenikförorenad mark efter träimpregnering : fastläggning, spridning och efterbehandling
On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.
Anpassade energisystemlösningar för passivhus - med hänsyn till byggnadens värmekapacitet
On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.
Effektivisering av kvävereduktionen i en konstruerad våtmark avsedd att behandla avloppsvatten
On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.
Ledarens användning av feedback från medarbetaren, för teamutveckling : En studie om hur systembaserad feedback från medarbetaren kan hjälpa ledaren att utveckla högpresterande team i företagsvärlden
In today's changing society, companies need to work with continuous change and improvement to evolve with the market. It is therefore important for managers to learn how to manage teams because they are expected to streamline selected products or processes in the business. Employees and teams need to develop in line with the changing environment in this process feedback is a tool and an important pillar. Leaders must learn to manage and transform feedback into something useful.The purpose of this study was to create an understanding of how systems-based feedback in the form of employee surveys can be a support for the leader in team development. We wanted to identify relevant behaviors and actions of the leader that may increase the work with feedback.
?Jag säger som det är? : En fallstudie om vikten av, och svårigheter med uppföljning och feedback
Uppsatsen har sin tyngdpunkt i att uppföljning och feedback är viktigt, och är något som ska leda till att företag utvecklas och förbättras. Levererandet och mottagandet av feedback hos ett företags medarbetare kan dock leda till problem och svårigheter beroende på hur den förmedlas av givaren, men även hur den tolkas av mottagaren. Denna problematisering - att uppföljning och feedback är viktigt men inte problemfritt - är utgångspunkten för denna uppsats. Uppsatsen bygger på en fallstudie av företaget DynaMate AB och har som huvudsyfte att redogöra för vad personer med chefsbefattning på företaget associerar uppföljning och feedback med samt hur de använder sig av dessa begrepp. Uppsatsen syftar även till att undersöka huruvida de intervjuade upplever problem och svårigheter i samband med uppföljning och feedback.
Kan en central strategi leva lokalt?: En fallstudie av Sveriges ledande spelbolag
This thesis examines the approach for implementing strategy that has been applied by the study object, Svenska Spel. The specific approach originates from the theories of Elliot Jaques, whose key proposal is that individuals have different capability of carrying out tasks over different time-spans. The main purpose of the study is to analyze how the approach has influenced the management control systems in use, in order to ensure that the strategy is successfully implemented on corporate as well as operational level. Twenty in debt interviews conducted with employees, representing a vertical cross section throughout the organization, are the main source of the study?s empirical foundation.
Utvärdering av Raman- och IR-spektroskopi, differentiell svepkalorimetri och dielektrisk spektroskopi för materialstudier på choklad
On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.
Konstruktion av UPS-modul
This master thesis describes the development of an UPS module. UPS is an acronym for Uninterruptable Power Supply. The UPS module has been developed at the company AerotechTelub AB. The UPS module delivers the necessary voltage and current in case of a power interrupt. If a power interrupt occur, the computer system has one to three minutes available to store data and shut down correctly.
LAN-Uppgradering
The interest in small-scale electricity in Sweden has increased strongly in recent years. The interest is noticeable both among politicians to increase the share of renewables in the energy mix, and among electricity consumers to partially replace purchased electricity with self-produced. This has resulted in a significant increase of electricity production in low voltage grids in recent years, and the trend appears to continue in the coming years. The majority of the new production plants are solar cells, followed by wind turbines, and it is also in these the greatest efforts are made in this paper.Distributed generation is often seen as something positive since it will contribute to reduced transmission losses and reduced voltage drop in the networks, and that it increases the share of electricity from renewable sources. In cases where the grids are not strong enough, or in other ways not adapted to manage the installed production, power quality may be adversely affected.
Feedback från klinisk praktik, en kvalitativ analys av tandhygieniststudenters erfarenheter av feedback från sina handledare under klinisk praktik.
Bakgrund: I handledaruppgifter ingår det att vara rådgivare, kunna ge stöd och vara en trygg person och ge uppmuntran och feedback. Att ge feedback när allt är bra brukar sällan skapa några problem men när studentens prestationer inte är tillräckliga är det inte alltid enkelt att nå fram som handledare på ett pedagogiskt sätt utan att det kan kännas negativt för studenten. Vid klinisk handledning är oftast en tredje part inblandad, patienten och det är då viktigt att handledningen sköts på ett professionellt sätt så att patienten inte känner att hon fått dålig vård och att studenten inte känner sig kränktSyfte: Syftet är att beskriva före detta tandhygieniststudenters erfarenheter av feedback från sina handledare vid klinisk praktikMetod: Ansatsen har varit kvalitativ och sex före detta tandhygieniststudenter har intervjuats med öppna frågor.Resultat: Det visade sig att studenterna ville och behövde mycket feedback. Helst ville de ha feedback direkt efter sin patientbehandling och på ett konstruktivt sätt. Studenter vill känna sig sedda och ha bekräftelse.Slutsats: På en klinisk praktik krävs det resurser genom att det borde finnas tillräckligt med personal föra att genomföra en bra utbildning.
Samförstånd eller motstånd? : En jämförelse av uppbackningar i samtal mellan pojkar från teoretiska och praktiska gymnasieprogram
The aim of this examination paper is to investigate the use of linguistic feedback among male senior high school students. Two groups consisting of male students preparing for ensuing studies, and two groups consisting of male students taking vocational studies, was interviewed in four separate interviews. By comparing how these four groups used linguistic feedback in conversation noticeable differences has been identified. For example, the boys preparing for ensuing studies used linguistic feedback the most. Also, all interviewed groups used linguistic feedback the most when they agreed with each other.
Pilotinstallation av fast och fjärravläst nätstationsmätning : Identifiering av för- och nackdelar med nätstationsmätning, Mälarenergi Elnät AB
Today?s electrical grid companies understand that better knowledge of and information about their grid can help realize a smart grid network. One way to gain better knowledge and information about the low voltage network is to install measuring equipment on the substation transformer´s secondary low voltage side that measures the low voltage network losses for that specific substation. By doing so, grid companies can, due to the calculation of the low voltage network losses, identify and address issues such as illegal power dissipation, unmeasured power outtakes, and unsatisfied technical documentation for the substations low voltage network.During 2012, Mälarenergi Elnät AB had a total electrical network loss (both medium and low voltage network losses included) of three to four percent of their total distributed electrical volume. Converting this energy volume into a monetary figure this accounts for a loss of around 30 million Swedish crowns.