Turbin og generator

Her kan du se en fullstendig oversikt over forskningsresultater fra HydroCen. Du kan velge å sortere resultatene etter de tilknyttede forskningstemaene, eller etter hvilken arbeidspakke de tilhører i HydroCen.

FORSKNINGSTEMA

ARBEIDSPAKKE

OPTIMAL KONTROLL VED VARIABEL HASTIGHET

Bruk av virtuell treghet

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TEMPERATUR- OG LASTANALYSE I GENERATORER

Hvordan minimere slitasje av statorvindinger

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TEST FOR STATORSTAVER

Ny testmetode for kvaliteten på statorstaver

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TURBINDESIGN FOR VARIABEL HASTIGHET

Design og optimalisering av Francisturbiner

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LEVETID FOR TURBINER I SEDIMENTHOLDIG VANN

Optimalisering av design for Francisturbiner

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VORTEX-GENERATOR

Serraterte skovler og virvelgenerator kan dempe vibrasjoner i turbinen

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VITENSKAPLIGE PUBLIKASJONER

Control Methods for Operation of Pumped Storage Plants With Full-Size Back-to-Back Converter Fed Synchronous Machines. Raghbendra Tiwari, Roy Nilsen, Olve Mo & Arne Nysveen ( 2023)
Analysis of Partial Discharge Activity for Multi-Stress Accelerated Aged Stator Bars. Birender Singh, Frank Mauseth, Espen Eberg & Emre Kantar ( 2023)
An Analytical quasi 2D steady-state Francis turbine model using first principles. Pål-Tore Selbo Storli & Chirag Trivedi ( 2022)
An experimental study regarding the effect of streamwise vorticity on trailing edge vortex induced vibrations of a hydrofoil. Kristian Forfot Sagmo & Pål-Tore Selbo Storli ( 2022)
Use of Data-Driven Approaches for Defect Classification in Stator Winding Insulation. Emre Kantar, Jaume Marti Cascallo, Torstein Grav Aakre, Nina Marie Thomsen & Espen Eberg ( 2022)
TwinLab Digital Twin Laboratory for Hydropower . Hans Ivar Skjelbred, Bjørnar Fjelldal, Bjørn Winther Solemslie & Ingrid Kristine Vilberg ( 2022)
Evaluation and Comparison between Multilevel Converters for Variable Speed Operation of Pumped Storage Power Plants with Full-size Converters. Raghbendra Tiwari, Roy Nilsen & Arne Nysveen ( 2021)
Control Strategies for Variable Speed Operation of Pumped Storage Plants with Full-size Converter Fed Synchronous Machines. Raghbendra Tiwari, Roy Nilsen & Olve Mo ( 2021)
Advanced Fault Detection of Synchronous Generators Using Stray Magnetic Field. Hossein Ehya, Arne Nysveen & Jose Alfonso Antonino Daviu ( 2021)
Modular Multilevel Converter for Variable Speed Operation of Pumped Storage Hydropower Plants. Raghbendra Tiwari, Roy Nilsen & Arne Nysveen ( 2021)
Leakage Vortex Progression through a Guide Vane’s Clearance Gap and the Resulting Pressure Fluctuation in a Francis Turbine. Nirmal Acharya, Saroj Gautam, Sailesh Chitrakar, Chirag Trivedi & Ole Gunnar Dahlhaug ( 2021)
Investigation of sediment erosion phenomenon for different blade angle distribution in Francis runner. Nirmal Acharya, Chirag Trivedi, Saroj Gautam & Ole Gunnar Dahlhaug ( 2021)
Comprehensive Broken Damper Bar Fault Detection of Synchronous Generators. Hossein Ehya & Arne Nysveen ( 2021)
Pattern Recognition of Inter-Turn Short Circuit Fault in a Synchronous Generator using Magnetic Flux. Hossein Ehya & Arne Nysveen ( 2021)
Performance Evaluation of Signal Processing Tools Used for Fault Detection of Hydro-generators Operating in Noisy Environments. Hossein Ehya, Arne Nysveen & Tarjei N. Skreien ( 2021)
Condition Monitoring of Wound Field Synchronous Generator under Inter-turn Short Circuit Fault utilizing Vibration Signal. Hossein Ehya, Gard Lyng Rødal, Arne Nysveen & Robert Nilssen ( 2020)
The Noise Effects on Signal Processors Used for Fault Detection Purpose. Hossein Ehya, Tarjei N. Skreien, Arne Nysveen & Robert Nilssen ( 2020)
Pattern Recognition of Inter-Turn Short Circuit Fault in Wound Field Synchronous Generator via Stray Flux Monitoring. Hossein Ehya, Arne Nysveen & Robert Nilssen ( 2020)
Detailed Magnetic Field Monitoring of Short Circuit Defects of Excitation Winding in Hydro-generator. Hossein Ehya, Arne Nysveen, I. L. Groth & Bruce A. Mork ( 2020)
A Practical Approach for Static Eccentricity Fault Diagnosis of Hydro-Generators. Hossein Ehya, Arne Nysveen & Robert Nilssen ( 2020)
Active NPC Converter for Variable Speed Operation of Pumped Storage Hydropower Plant. Raghbendra Tiwari, Roy Nilsen & Arne Nysveen ( 2020)
Analytical Loss Equations for Three Level Active Neutral Point Clamped Converters. Raghbendra Tiwari & Roy Nilsen ( 2020)
Optimization of Francis Turbines for Variable Speed Operation Using Surrogate Modeling Approach. Igor Iliev, Erik Os Tengs, Chirag Trivedi & Ole Gunnar Dahlhaug ( 2020)
Variable Speed Hydropower Conversion and Control. Tor Inge Reigstad & Kjetil Uhlen ( 2020)
Time Domain Signature Analysis of Synchronous Generator under Broken Damper Bar Fault. Hossein Ehya, Arne Nysveen, Robert Nilssen & Urban Lundin ( 2019)
Active Compensation of Unbalanced Load Currents in Grid Connected Voltage Source Converters . Raghbendra Tiwari & Roy Nilsen ( 2019)
Solving optimal power dispatch using artificial algorithm for Nordic 44 network. Shohreh Monshizadeh, Gunne John Hegglid & Svein Thore Hagen ( 2019)
Francis-99: Coupled simulation of the resonance effects in runner channels. Erik Os Tengs, Live Salvesen Fevåg & Pål-Tore Selbo Storli ( 2019)
A test of the v 2-f k-epsilon turbulence model for the prediction of vortex shedding in the Francis-99 hydrofoil test case. Kristian Forfot Sagmo & Pål-Tore Selbo Storli ( 2019)
Two-way coupled simulation of the Francis-99 hydrofoil using model order reduction. Erik Os Tengs, Johannes Einzinger & Pål-Tore Selbo Storli ( 2019)
Numerical prediction of hill charts of Francis turbines. Andreas Nordvik, Igor Iliev, Chirag Trivedi & Ole Gunnar Dahlhaug ( 2019)
Numerical study of sediment erosion in guide vanes of a high head Francis turbine. Nirmal Acharya, Chirag Trivedi, Nina Marie Wahl, S Gautam, Sailesh Chitrakar & Ole Gunnar Dahlhaug ( 2019)
Study of flow structure in erosion prone complex geometries. Eirik Volent, Ole Gunnar Dahlhaug & Erik Os Tengs ( 2019)
The numerical and experimental investigation of erosion induced leakage flow through guide vanes of Francis turbine . Sailesh Chitrakar, Hari Prasad Neopane & Ole Gunnar Dahlhaug ( 2019)
Variable-speed operation and pressure pulsations in a Francis turbine and a pump-turbine. Igor Iliev, Chirag Trivedi, Einar Agnalt & Ole Gunnar Dahlhaug ( 2019)
On the Rotor Stator Interaction Effects of Low Specific Speed Francis Turbines. Einar Agnalt, Igor Iliev, Bjørn Winther Solemslie & Ole Gunnar Dahlhaug ( 2019)
Evaluation on the Minimum Principal Stress State and Potential Hydraulic Jacking from the Shotcrete-Lined Pressure Tunnel: A Case from Nepal. Chhatra Bahadur Basnet & Krishna Kanta Panthi ( 2019)
PIV measurements and CFD simulations of a hydrofoil at lock-in. Kristian Forfot Sagmo, Erik Os Tengs, Carl Werdelin Bergan & Pål-Tore Selbo Storli ( 2019)
Variable-speed operation of Francis turbines: A review of the perspectives and challenges. Igor Iliev, Chirag Trivedi & Ole Gunnar Dahlhaug ( 2019)
Experimental Study of a Low-Specific Speed Francis Model Runner during Resonance. Einar Agnalt, Petter Thorvald Krogh Østby, Bjørn Winther Solemslie & Ole Gunnar Dahlhaug ( 2018)
FME HydroCen – New Norwegian research initiative on Hydropower . Hege Brende, Leif Lia & Bjørn Nilsen ( 2018)
Electromagnetic analysis and electrical signature-based detection of rotor inter-turn faults in salient-pole synchronous machine. Mostafa Valavi, Kari Gjerde Jørstad & Arne Nysveen ( 2018)
Analysis of Additional Eddy-Current Copper Losses in Large Converter-Fed Hydropower Generators. Erlend Løklingholm Engevik, Mostafa Valavi & Arne Nysveen ( 2018)
Simulation and Discussion of Models for Hydraulic Francis Turbine Simulations. Pål-Tore Selbo Storli & Torbjørn Kristian Nielsen ( 2018)
Pressure pulsations and hydraulic efficiency at Smeland power plant. Vegard S. Ulvan, Johannes O. Kverno & Ole Gunnar Dahlhaug ( 2018)
Pressure Pulsation in a High Head Francis Turbine Operating at Variable Speed. Daniel B. Sannes, Igor Iliev, Einar Agnalt & Ole Gunnar Dahlhaug ( 2018)
Performance Comparison of Optimized Designs of Francis Turbines Exposed to Sediment Erosion in various Operating Conditions. K.P. Shrestha, Sailesh Chitrakar, Bhola Thapa & Ole Gunnar Dahlhaug ( 2018)
Simplified hydrodynamic analysis on the general shape of the hill charts of Francis turbines using shroud-streamline modeling. Igor Iliev, Chirag Trivedi & Ole Gunnar Dahlhaug ( 2018)
Hydrodynamic Damping of a Fluttering Hydrofoil in High-speed Flows. Carl Werdelin Bergan, Bjørn Winther Solemslie, Petter Thorvald Haug Østby & Ole Gunnar Dahlhaug ( 2018)
Experimental investigation of a Francis turbine during exigent ramping and transition into total load rejection. Chirag Trivedi, Einar Agnalt & Ole Gunnar Dahlhaug ( 2018)
Flow measurements around guide vanes of Francis turbine: A PIV approach. Biraj Singh Thapa, Ole Gunnar Dahlhaug & Bhola Thapa ( 2018)
Investigation of the Unsteady Pressure Pulsations in the Prototype Francis Turbines -Part 1: Steady State Operating Conditions. Chirag Trivedi, Peter Joachim Gogstad & Ole Gunnar Dahlhaug ( 2018)
Roughness evaluation in shotcrete-lined water tunnels with invert concrete based on cases from Nepal. Chhatra Bahadur Basnet & Krishna Kanta Panthi ( 2018)
Influence of Converter Topology and Carrier Frequency on Airgap Field Harmonics, Magnetic Forces, and Vibrations in Converter-Fed Hydropower Generator . Mostafa Valavi, Emile Devillers, Jean Le Besnerais, Arne Nysveen & Roy Nilsen ( 2018)
The other renewable: Hydropower upgrades and renewable portfolio standards. Stein-Erik Fleten, Johannes Mauritzen & Carl J. Ullrich ( 2018)
Experimental study of a Francis turbine under variable-speed and discharge conditions. Chirag Trivedi, Einar Agnalt & Ole Gunnar Dahlhaug ( 2018)
Variable-speed operation of hydropower plants: past, present, and future. Mostafa Valavi & Arne Nysveen ( 2018)
Investigation of magnetic field and radial force harmonics in a hydrogenerator connected to a three-level NPC converter. Mostafa Valavi, Arne Nysveen & Roy Nilsen ( 2017)
Numerical and experimental study of the leakage flow in guide vanes with different hydrofoils. Sailesh Chitrakar, Biraj Singh Thapa, Ole Gunnar Dahlhaug & Hari Prasad Neopane ( 2017)
Analysis of magnetic forces and vibration in a converter-fed synchronous hydrogenerator. Mostafa Valavi, Arne Nysveen, Roy Nilsen, Jean Le Besnerais & Emile Devillers ( 2017)
Blade passage modeling strategy for hydraulic turbine. Ruzhi Gong, Chirag Trivedi, Ole Gunnar Dahlhaug & Torbjørn Kristian Nielsen ( 2017)
Influence of winding layout and airgap length on radial forces in large synchronous hydrogenerators. Erlend L. Engevik, Mostafa Valavi & Arne Nysveen ( 2017)
Effects of lifting reactance requirements on the optimal design of converter-fed synchronous hydrogenerators. Erlend L. Engevik, Truls Hestengen, Mostafa Valavi & Arne Nysveen ( 2017)
3D in-Situ Stress Model of Upper Tamakoshi Hydroelectric Project Area. Chhatra Bahadur Basnet & Krishna Kanta Panthi ( 2017)
Effects of sediment erosion in guide vanes of Francis turbine. Biraj Singh Thapa, Ole Gunnar Dahlhaug & Bhola Thapa ( 2017)
Particle Image Velocimetry Investigation of the Leakage Flow Through Clearance Gaps in Cambered Hydrofoils. Sailesh Chitrakar, Hari Prasad Neopane & Ole Gunnar Dahlhaug ( 2017)
Investigations of unsteady pressure loading in a Francis turbine during variable-speed operation. Chirag Trivedi, Einar Agnalt & Ole Gunnar Dahlhaug ( 2017)
Study of the simultaneous effects of secondary flow and sediment erosion in Francis turbines. Sailesh Chitrakar, Hari Prasad Neopane & Ole Gunnar Dahlhaug ( 2016)
Experimental Investigation of a High Head Model Francis Turbine During Steady-State Operation at Off-Design Conditions. Carl Werdelin Bergan, Rahul Goyal, Michel Cervantes & Ole Gunnar Dahlhaug ( 2016)
Experimental investigation on a high head model Francis turbine during load rejection. Rahul Goyal, Carl Werdelin Bergan, Michel Cervantes, B. K. Gandhi & Ole Gunnar Dahlhaug ( 2016)
Velocity and pressure measurements in guide vane clearance gap of a low specific speed Francis turbine. Biraj Singh Thapa, Ole Gunnar Dahlhaug & Bhola Thapa ( 2016)
Numerical investigation of the flow phenomena around a low specific speed Francis turbine’s guide vane cascade. Sailesh Chitrakar, Biraj Singh Thapa, Ole Gunnar Dahlhaug & Hari Prasad Neopane ( 2016)
Transient pressure measurements at part load operating condition of a high head model Francis turbine. Rahul Goyal, Chirag Trivedi, BK Gandhi, Michel Cervantes & Ole Gunnar Dahlhaug ( 2016)
Analysis of Radial Magnetic Forces in Hydrogenerators with Fractional-Slot Windings. Mostafa Valavi, Jules Pascal & Arne Nysveen ( 2016)
Efficiency and loss calculations in design of converter-fed synchronous hydrogenerators. Erlend L. Engevik, Mostafa Valavi & Arne Nysveen ( 2016)
Numerical techniques applied to hydraulic turbines: a perspective review. Chirag Trivedi, Michel Cervantes & Ole Gunnar Dahlhaug ( 2016)
Experimental and Numerical Studies of a High-Head Francis Turbine: A Review of the Francis-99 Test Case. Chirag Trivedi, Michel Cervantes & Ole Gunnar Dahlhaug ( 2016)

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RESULTATER I HYDROCEN

OPTIMAL KONTROLL VED VARIABEL HASTIGHET

TEMPERATUR- OG LASTANALYSE I GENERATORER

TEST FOR STATORSTAVER

TURBINDESIGN FOR VARIABEL HASTIGHET

LEVETID FOR TURBINER I SEDIMENTHOLDIG VANN

VORTEX-GENERATOR

VITENSKAPLIGE PUBLIKASJONER