Browsing NTNU Open by Author "Undeland, Tore Marvin"
Now showing items 21-40 of 70
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Driving of a GaN enhancement mode HEMT transistor with zener diode protection for high efficiency and low EMI
Spro, Ole Christian; Basu, Supratim; Abuishmais, Ibrahim Abed; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2017)The ultra-low gate charge characteristics and low gate voltage limitation of a GaN enhancement mode HEMT in combination with stray circuit elements poses many challenges of driving them in power electronic applications. ... -
Efficiency and Conducted EMI evaluation of a single-phase power factor correction boost converter using state-of-the-art SiC MOSFET and SiC diode
Tiwari, Subhadra; Basu, Supratim; Undeland, Tore Marvin; Midtgård, Ole-Morten (Journal article; Peer reviewed, 2019)SiC-based diodes and MOSFETs switch extremely quickly with low conduction losses. Thus, from the perspective of efficiency, such devices are ideal for a continuous conduction mode (CCM) boost power factor correction (PFC) ... -
Electromagnetic Interference in Dwnhole Applications
Adamu, Tigist Atnafseged (Master thesis, 2012)Summary Electromagnetic compatibility (EMC) and electromagnetic interference (EMI) are topics which have been of concern to electrical industry for many years. Excessive generation of electromagnetic noise and interference, ... -
Energy Storage Solutions for Wave Energy in Stand Alone Systems
Barfod, Emma (Master thesis, 2009)Energy Storage technology is a key to further development of renewable energy sources. The objective of this master thesis is wave energy in a Stand Alone System. Two point absorber systems developed by FOBOX, Fred Olsens ... -
Experimental performance comparison of six-pack SiC MOSFET and Si IGBT modules paralleled in a half-bridge configuration for high temperature applications
Tiwari, Subhadra; Midtgård, Ole-Morten; Undeland, Tore Marvin; Lund, Richard (Chapter, 2016)—In this paper, the switching performance of asix-pack SiC MOSFET module (CCS050M12CM2) is inves-tigated experimentally using a standard double pulse testmethod. The upper three and the lower three MOSFETsof the ... -
Experimental performance evaluation of two commercially available, 1.2 kV half-bridge SiC MOSFET modules
Tiwari, Subhadra; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter; Peer reviewed, 2016)In this paper, the switching performances of two state-of-the-art half-bridge SiC MOSFET modules are evaluated using a standard double pulse test methodology. The selected modules are commercially available, and have the ... -
Feasibility Studies on Integrating Offshore Wind Power with Oil Platforms
Årdal, Atle Rygg (Master thesis, 2011)This thesis is centered around the possibilities of integrating offshore wind power together with oil and gas platforms. The motivation behind this topic is to reduce the emissions of CO2 and other pollutive gases from ... -
Fuel Savings Obtained by Replacing Traditional AC-distribution Systems onboard Vessels with DC-distribution Systems
Opdahl, Aleksander (Master thesis, 2013)Today most of the diesel-electric systems on board ships are based on an AC-distribution of the generated power. The electric power is fed directly from the synchronous generators into an AC-grid, where it is distributed ... -
Gate driver design for normally-off SiC JFET: Silicon Carbide technology for PV inverters
Grigorjevs, Aleksejs (Master thesis, 2011)In this thesis a research on modern SiC semiconductor devices is made with a bias on the driving methods and requirements. A compact two-stage gate driver circuit for SiC VJFET is developed, the transistor is characterized ... -
Grid Integration of Large Offshore Wind Farm and Oil Gas Installations Using HVDC Technologies
Xu, Jia (Master thesis, 2010)This thesis investigates the modeling and control of High Voltage Direct Current (HVDC) for connection of offshore large variable speed wind farm and oil & gas installations to main grid. Both Line Commutated Converter ... -
Hard and soft switching losses of a SiC MOSFET module under realistic topology and loading conditions
Tiwari, Subhadra; Langelid, John Kåre; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2017)This paper investigates the switching performance of a 1.2 kV half-bridge SiC MOSFET module from Sanrex. Unlike in a standard SiC MOSFET module, where the MOSFET and the anti-parallel diode chips are fabricated separately, ... -
High-Voltage Multilevel Converters: Application of Multilevel Converters in Direct Grid Connection of Wind Turbines
Moghimian Hoosh, Behrooz (Master thesis, 2010)In this thesis a modular PMSG and converter topology, suitable for utility interface of large wind turbine has been has been explored. A comprehensive analysis on different sinusoidal pulse width modulation has been performed ... -
HVDC Transmission Using a Bipolar Configuration Composed of an LCC and MMC: Operating Characteristics of Skagerrak 3 and Skagerrak 4
Kjørholt, Åsa M Halvorsdatter (Master thesis, 2014)The operational properties of a bipolar configuration composed of a Line-Commutated Converter (LCC) and a Voltage Source Converter (VSC) in a multilevel topology (MMC) are investigated. Simulation models are made in the ... -
Inductive Power Transfer with Resonance for Wireless Charging of Batteries in Electric Vehicles
Roaldset, Johanna Ruud (Master thesis, 2010)This report investigates inductive power transfer with resonance for wireless charging of electric vehicle (EV) batteries. The inspiration for the topic came from the paper Basic experimental study on helical antennas of ... -
Integrating Offshore Wind Power and Multiple Oil and Gas Platforms to the Onshore Power Grid using VSC-HVDC Technology
Kolstad, Magne Lorentzen (Master thesis, 2013)This thesis investigates the possibilities of integrating oil and gas platforms and offshore wind power to the onshore power grid. The main motivation for this is to reduce the large greenhouse gas emissions associated ... -
Integrating Offshore Wind Power and Multiple Oil and Gas Platforms to the Onshore Power Grid Using VSC-HVDC Technology
Kolstad, Magne Lorentzen; Årdal, Atle Rygg; Sharifabadi, Kamran Torki; Undeland, Tore Marvin (Journal article; Peer reviewed, 2014)This paper investigates the possibilities of integrating oil and gas platforms and offshore wind power to the onshore power grid. The main motivation for this proposal is to reduce the large greenhouse gas emissions ... -
Investigation of the Doubly Fed Permanent Magnet Synchronous Machine
Feilberg, Espen (Master thesis, 2009)This master thesis treats the research of a novel generator with converter design called Doubly Fed Permanent Magnet Synchronous Machine , DF-PMSM, patented by SmartMotor. The thesis includes an introduction to the ... -
Laboratory Verification of the Modular Converter for a 100 kV DC Transformerless Offshore Wind Turbine Solution
Gjerde, Sverre Skalleberg; Ljøkelsøy, Kjell; Undeland, Tore Marvin (Journal article; Peer reviewed, 2013)In this paper, an experimental verification of the control of a modular series connected voltage source converter suitable for an HVDC transformerless offshore wind turbine is presented. The test bench is built around a ... -
Low switching frequency modulation scheme for high power three level converters: FPGA based implementation
Yenore, Biruk Bekele (Master thesis, 2013)The demand for electrical motors with high power ratings is increasing in different applications, especially in the offshore industry. The power rating of these motors can be raised by increasing the voltage at the motor ... -
Magnetic Design for High Temperature, High Frequency SiC Power Electronics
Sørsdahl, Torbjørn (Master thesis, 2013)Power electronic components which can operate at high temperatures would benefit a large number of different applications such as in petroleum exploration, aviation and electrical vehicles. Silicon carbide semiconductors ...