Essays about: "Kristinn Arnar Ormsson"

Found 2 essays containing the words Kristinn Arnar Ormsson.

1. 1. Modelling and Dynamic Performance of Hydropower in Frequency Regulation : Modelling of Double Regulated Hydropower Turbines

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Kristinn Arnar Ormsson; [2021]
   Keywords : Frequency Containment Reserves FCR ; Hydropower; Double regulated DR turbine; Non-linear modelling; Simulink.; Frekvensreserv FCR ; vattenkraft; dubbelreglerad DR turbin; icke-linjär modellering; Simulink.;

   Abstract : The frequency of the Nordic power system has been increasingly deviating outside the normal frequency band (50 ± 0.1 Hz) in the past two decades. In an effort to counteract this, the Nordic Transmission System Operators (TSOs) have proposed new and stricter requirements on the units participating in Frequency Containment Reserve (FCR) market. READ MORE

3. 2. A commercial vehicle’s electrical startability

   University essay from KTH/Hälsoinformatik och logistik

   Author : Kristinn Arnar Ormsson; Henrik Persson; [2018]
   Keywords : Startability; commercial vehicle; cranking system; lead-acid battery; state of charge; starter motor; internal combustion engine.; Startbarhet; tunga fordon; startsystem; blysyrabatteri; batteriladdningsgrad; startmotor; förbränningsmotor.;

   Abstract : In commercial vehicles, where the driver overnights with the engine turned off whilestill consuming electricity, it is important to know how much the battery can bedischarged before reliable engine starting is at risk. The vehicle’s ability to crank theengine, i.e. READ MORE