Blar i NTNU Open på forfatter "Nilsen, Roy"
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Modeling, simulation and implementation of Multi-phase Induction Motor Drives.
Thopate, Sachin (Master thesis, 2011)The results obtained in the simulations and the actual results that are observed on the SPIM drive for the DSFCC strategy are in agreement. The operations of the control strategies during the extreme conditions were tested ... -
Modelling and Control of Six-Phase Induction Motor Drive
Araya, Nebrom Berihu (Master thesis, 2012)Multiphase machines are of interest to be applied in electric ship propulsion, where increased power ratings, reliability of operation, redundancy and efficiency are required. The study of modelling and control of multiphase ... -
Modulation Methods for Neutral-Point-Clamped Three-Level Inverter
Floten, Sveinung; Haug, Tor Stian (Master thesis, 2010)Multilevel converters have seen an increasing popularity in the last years for medium- and high-voltage applications. The most popular has been the three-level neutral clamped converter and still research is going on to ... -
On Dynamic Characterization Evaluation and Control of Active Gate Drivers for SiC power MOSFETs
Philipps, Daniel Alexander (Doctoral theses at NTNU;2023:388, Doctoral thesis, 2023)Silicon Carbide (SiC) powerMetal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) bear the potential of revolutionizing power electronic converters in regard to high efficiency, but also high power density converters ... -
Online Identification of Six-Phase IPMSM Parameters Using Prediction-Error Sensitivities to Model Parameters
Perera, Aravinda; Nilsen, Roy (Chapter, 2022)Six-phase Interior Permanent Magnet Synchronous Machines (IPMSM) drives with dual three-phase configuration offer unique merits that make them attractive for reliability-critical applications. Online identification of ... -
Optimization algorithms for the currents in the Field Weakening region of an Interior Permanent Magnet Synchronous Motor of an Electric Racing Car
Fanin, Francesco (Master thesis, 2020) -
Optimization of Zero-Emission Power Devices for an Electric Aircraft
Nygaard, Arne Filip (Master thesis, 2021)For å nå klimamålene om karbonnøytralitet innen 2050, må også luftfartssektoren erstatte fossilt drivstoff med mer bærekraftige alternativer. Flyindustrien viser spesiell interesse for hydrogen på grunn av grunnstoffets ... -
Position-Sensorless Indirect Torque Control of Permanent Magnet Synchronous Machines
Jensen, Isak Nordeng (Master thesis, 2021)Sensorløse permanentmagnet synkronmotordrifter er i ferd med etablere seg som det foretrukne valget for anvendelser som krever stor grad av sikkerhet, pålitelighet og lav vekt. Dette kan tilskrives fordeler som høy effekt- ... -
Power Electronics Converters for Microgrids with Smart Grid Functionality: Digital Implementation of Proportional Resonant Controllers
Galami, Selie (Master thesis, 2014)The fast evolving technology has resulted in an extensive use of power electronics. The desire of making a grid network more intelligent can be fulfilled by these power electronics device. Based on the controller design ... -
Power Factor Correction for a Bidirectional On-Board Charger for Electric Vehicles and Plug-in Hybrid Electric Vehicles - A fundamental study of the bidirectional totem-pole PFC
Johannessen, Sondre Westby (Master thesis, 2018)With the beginning implementation of a smart grid in industrialized countries increasing the load flexibility of customers, as well as communication with the grid operators, a potential market for bidirectional on-board ... -
Recursive Prediction Error Gradient-Based Algorithms and Framework to Identify PMSM Parameters Online
Perera, Aravinda; Nilsen, Roy (Peer reviewed; Journal article, 2022)Real-time acquisition of accurate machine parameters is of significance to achieving high performance in electric drives, particularly targeted for mission-critical applications. Unlike the saturation effects, the temperature ... -
A Recursive Prediction Error Method with Effective Use of Gradient-Functions to Adapt PMSM-Parameters Online
Perera, Aravinda; Nilsen, Roy (Chapter, 2020)This paper proposes a method for online estimation of electrical parameters of interior permanent magnet synchronous machines (IPMSM) based on the recursive prediction error method (RPEM). The parameter-sensitivity functions ... -
Senorless control of synchronous machines
Hald, Johan Palmstrøm (Master thesis, 2020)Med den drastiske økningen i utbytning av regulerbar kraftproduksjon til fordel for variable, fornybare energikilder som vind- og solkraft i fastlands Europa, er etterspørselen etter fleksibilitet i kraftnettet stadig ... -
A Sensorless Control Method for IPMSM with an Open-Loop Predictor for Online Parameter Identification
Perera, Aravinda; Nilsen, Roy (Chapter, 2020)In this paper, a method is proposed to improve the performance of a mechanical transducer-less control of an interior permanent magnet synchronous machine (IPMSM) with use of a dedicated online parameter estimator (OPE). ... -
Sensorless Control of a 6-phase Induction Machine
Mørkved, Emil Hansen (Master thesis, 2018)In this thesis, the challenges regarding sensorless operation were presented and analyzed, especially in the low-speed region. The performance of the motor control is highly depending on the estimation of the stator ... -
Sensorless Control of a PM motor Drive for Drones based on STMicroelectronics STM32 microprocessor series
Nerbøberg, Pål (Master thesis, 2022)Alva Industries ønsker å utvikle som egen kontrollplattform for deres tannløse permanent magnet synkronmaskin for droner. STMIcroelectronics STM32 mikroprosessor serie er utforsket og dokumentert med hjelp av Nucleo ... -
Sensorless control of PMSM with sinusoidal filter
Sudkamp, Maurice (Master thesis, 2023)Bruken av Permanente Magnet Synkronmaskiner (PMSM) har økte de siste årene på grunn av deres egenskaper som høy virkningsgrad, høyt forhold mellom kraft og vekt, dreiemoment og vekt, pålitelighet, holdbarhet, gode ... -
Sensorless Control of Synchronous Machines Used in Adjustable Speed Hydro
Bolstad, Magnus (Master thesis, 2018)For some high power applications, as for instance in adjustable speed hydro, ASH, synchronous machines are used for power generation. In this master`s thesis, flux models and sensorless control methods for a synchronous ... -
Sensorless Control of Synchronous Machines used in ASH
Mjell, Håkon Laaveg (Master thesis, 2019)Sensorøs kontroll av maskiner har blitt mer populært de seneste årene, siden man kan redusere kostnadene og øke påliteligheten ved å unngå posisjonssensor. Rotorens posisjon og hastighet kan istedenfor estimeres ved hjelp ... -
SiC MOSFETs for Offshore Wind Applications
Tiwari, Subhadra; Undeland, Tore Marvin; Midtgård, Ole-Morten; Nilsen, Roy (Journal article; Peer reviewed, 2018)Space and weight are critical factors for offshore wind applications during the construction, operation, and maintenance phases. Superior material properties of silicon carbide enable the development of power devices capable ...