Urban Lundin

Experimental Testing of Amplified Inertia Response from Synchronous Machines Compared with Frequency Derivative-Based Synthetic Inertia

Fregelius, Martin; Albuquerque, Vinícius M.; Norrlund, Per; Lundin, Urban

Ingår i Energies, 2025

• DOI för Experimental Testing of Amplified Inertia Response from Synchronous Machines Compared with Frequency Derivative-Based Synthetic Inertia
• Ladda ner fulltext (pdf) av Experimental Testing of Amplified Inertia Response from Synchronous Machines Compared with Frequency Derivative-Based Synthetic Inertia

Storage system optimization for enhancing frequency control from hydropower

Laban, Danilo; Norrlund, Per; Lundin, Urban

Ingår i Journal of Energy Storage, 2025

• DOI för Storage system optimization for enhancing frequency control from hydropower
• Ladda ner fulltext (pdf) av Storage system optimization for enhancing frequency control from hydropower

Validation of the Analytical Prediction of the Damper Winding Pole-to-Pole Impedance in Hydro Generators

Ridder, Andreas; de Barros, Allan; Lundin, Urban; Hernnäs, Bo et al.

Ingår i 2024 27TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, ICEMS, s. 1911-1918, 2024

An alternative Run-Up Strategy for Salient Pole Wound Field Synchronous Machines

Felicetti, Roberto; Albuquerque, Vinícius M.; Lundin, Urban

Ingår i IEEE Open Journal of Industrial Applications, s. 15-28, 2024

• DOI för An alternative Run-Up Strategy for Salient Pole Wound Field Synchronous Machines
• Ladda ner fulltext (pdf) av An alternative Run-Up Strategy for Salient Pole Wound Field Synchronous Machines

A concept to ensure spill discharge capacity during grid blackout and flooding

Strömme Mattsson, Adam; Lundin, Urban; Billstein, Mats; Nordström, E.

Ingår i Management for Safe Dams, s. 769-777, 2023

Experimental Testing of Amplified Inertia Response from Synchronous Machines Compared with Frequency Derivative-Based Synthetic Inertia

Fregelius, Martin; Albuquerque, Vinícius M.; Norrlund, Per; Lundin, Urban

Ingår i Energies, 2025

• DOI för Experimental Testing of Amplified Inertia Response from Synchronous Machines Compared with Frequency Derivative-Based Synthetic Inertia
• Ladda ner fulltext (pdf) av Experimental Testing of Amplified Inertia Response from Synchronous Machines Compared with Frequency Derivative-Based Synthetic Inertia

Storage system optimization for enhancing frequency control from hydropower

Laban, Danilo; Norrlund, Per; Lundin, Urban

Ingår i Journal of Energy Storage, 2025

• DOI för Storage system optimization for enhancing frequency control from hydropower
• Ladda ner fulltext (pdf) av Storage system optimization for enhancing frequency control from hydropower

An alternative Run-Up Strategy for Salient Pole Wound Field Synchronous Machines

Felicetti, Roberto; Albuquerque, Vinícius M.; Lundin, Urban

Ingår i IEEE Open Journal of Industrial Applications, s. 15-28, 2024

• DOI för An alternative Run-Up Strategy for Salient Pole Wound Field Synchronous Machines
• Ladda ner fulltext (pdf) av An alternative Run-Up Strategy for Salient Pole Wound Field Synchronous Machines

Storage System Design for Improved Primary Frequency Control From Hydropower Units

Laban, Danilo; Norrlund, Per; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 1836-1844, 2023

• DOI för Storage System Design for Improved Primary Frequency Control From Hydropower Units

A Synchronous Machine Transient Model Based upon an Algebraic Loop Accounting for Nonlinearity and Cross-Magnetization

Felicetti, Roberto; Lundin, Urban

Ingår i International Journal of Rotating Machinery, 2023

• DOI för A Synchronous Machine Transient Model Based upon an Algebraic Loop Accounting for Nonlinearity and Cross-Magnetization
• Ladda ner fulltext (pdf) av A Synchronous Machine Transient Model Based upon an Algebraic Loop Accounting for Nonlinearity and Cross-Magnetization

Simulation of Rapid Voltage Edge Related Voltage Surges in Highly Inductive Windings with Frequency Dependent Parameters

Felicetti, Roberto; Pérez-Loya, Jesús J.; Lundin, Claes U.

Ingår i Progress in Electromagnetics Research B, s. 1-21, 2023

• DOI för Simulation of Rapid Voltage Edge Related Voltage Surges in Highly Inductive Windings with Frequency Dependent Parameters

Using hydropower turbine discharge as a complementary spillway

Lundin, Urban; Jonsson, Pontus; Facciolo, Luca

Ingår i Journal of Applied Water Engineering and Research, s. 117-126, 2023

• DOI för Using hydropower turbine discharge as a complementary spillway
• Ladda ner fulltext (pdf) av Using hydropower turbine discharge as a complementary spillway

Dynamic model for hydropower generators with floating rotor rim

Rondon, David; Aidanpää, Jan-Olov; Gustavsson, Rolf; Lundin, Urban et al.

Ingår i Mechanical systems and signal processing, 2023

• DOI för Dynamic model for hydropower generators with floating rotor rim
• Ladda ner fulltext (pdf) av Dynamic model for hydropower generators with floating rotor rim

Performance Evaluation of a Supercapacitor Based Synthetic Inertia System Using Frequency Locked Loop and Real-Time Frequency Derivative Estimation

Fregelius, Martin; Lundin, Urban

Ingår i International Journal of Electrical Power & Energy Systems, 2023

• DOI för Performance Evaluation of a Supercapacitor Based Synthetic Inertia System Using Frequency Locked Loop and Real-Time Frequency Derivative Estimation

Mitigation of Unbalanced Magnetic Pull in Synchronous Machines With Rotating Exciters

Evestedt, Fredrik; Pérez-Loya, Jesús José; Abrahamsson, Johan; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 812-819, 2021

• DOI för Mitigation of Unbalanced Magnetic Pull in Synchronous Machines With Rotating Exciters

Controlling airgap magnetic flux density harmonics in synchronous machines using field current injection

Evestedt, Fredrik; Pérez-Loya, Jesús José; Abrahamsson, Johan; Lundin, Urban

Ingår i Electrical engineering (Berlin. Print), s. 195-203, 2021

• DOI för Controlling airgap magnetic flux density harmonics in synchronous machines using field current injection
• Ladda ner fulltext (pdf) av Controlling airgap magnetic flux density harmonics in synchronous machines using field current injection

An experimentally determined field winding model with frequency-dependent parameters

Felicetti, Roberto; Abrahamsson, Johan; Lundin, Urban

Ingår i IET Electric Power Applications, s. 696-716, 2021

• DOI för An experimentally determined field winding model with frequency-dependent parameters
• Ladda ner fulltext (pdf) av An experimentally determined field winding model with frequency-dependent parameters

A Model for Stator Eddy Current Losses Due to Axial Flux in Synchronous Generators at Steady State and under Load Angle Oscillations

Marcusson, Birger; Lundin, Urban

Ingår i Electric power components and systems, s. 120-132, 2021

• DOI för A Model for Stator Eddy Current Losses Due to Axial Flux in Synchronous Generators at Steady State and under Load Angle Oscillations
• Ladda ner fulltext (pdf) av A Model for Stator Eddy Current Losses Due to Axial Flux in Synchronous Generators at Steady State and under Load Angle Oscillations

The influence of eddy currents on the excitation winding impedance of solid and laminated salient pole synchronous machines

Felicetti, Roberto; Abrahamsson, Johan; Lundin, Urban

Ingår i Electrical engineering (Berlin. Print), s. 2553-2566, 2020

• DOI för The influence of eddy currents on the excitation winding impedance of solid and laminated salient pole synchronous machines
• Ladda ner fulltext (pdf) av The influence of eddy currents on the excitation winding impedance of solid and laminated salient pole synchronous machines

Unified Reduced Model for a Dual-Control Scheme of the High-Speed Response Brushless Excitation System of Synchronous Generators

Noland, Jonas Kristiansen; Alves, Erick Fernando; Pardini, Atila; Lundin, Urban

Ingår i IEEE Transactions on Industrial Electronics, s. 4474-4484, 2020

• DOI för Unified Reduced Model for a Dual-Control Scheme of the High-Speed Response Brushless Excitation System of Synchronous Generators

Failure Modes Demonstration and Redundant Postfault Operation of Rotating Thyristor Rectifiers on Brushless Dual-Star Exciters

Nøland, Jonas Kristiansen; Evestedt, Fredrik; Lundin, Urban

Ingår i IEEE Transactions on Industrial Electronics, s. 842-851, 2019

• DOI för Failure Modes Demonstration and Redundant Postfault Operation of Rotating Thyristor Rectifiers on Brushless Dual-Star Exciters

Electromagnetic losses in synchronous machines during active compensation of unbalanced magnetic pull

Pérez-Loya, J. José; Abrahamsson, C. Johan D.; Lundin, Urban

Ingår i IEEE Transactions on Industrial Electronics, s. 124-131, 2019

• DOI för Electromagnetic losses in synchronous machines during active compensation of unbalanced magnetic pull

Demonstration of Synchronous Motor Start by Rotor Polarity Inversion

Pérez-Loya, J. José; Abrahamsson, C. Johan D.; Evestedt, Fredrik; Lundin, Urban

Ingår i IEEE Transactions on Industrial Electronics, s. 8271-8273, 2018

• DOI för Demonstration of Synchronous Motor Start by Rotor Polarity Inversion

Comparison of Thyristor Rectifier Configurations for a Six-Phase Rotating Brushless Outer Pole PM Exciter

Kristiansen Nøland, Jonas; Evestedt, Fredrik; Pérez-Loya, Jesús José; Abrahamsson, Johan et al.

Ingår i IEEE Transactions on Industrial Electronics, s. 968-976, 2018

• DOI för Comparison of Thyristor Rectifier Configurations for a Six-Phase Rotating Brushless Outer Pole PM Exciter

Burden on hydropower units for short-term balancing of renewable power systems

Yang, Weijia; Sundqvist, Per; Saarinen, Linn; Witt, Adam et al.

Ingår i Nature Communications, 2018

• DOI för Burden on hydropower units for short-term balancing of renewable power systems
• Ladda ner fulltext (pdf) av Burden on hydropower units for short-term balancing of renewable power systems

Eigen-analysis of hydraulic-mechanical-electrical coupling mechanism for small signal stability of hydropower plant

Yang, Weijia; Norrlund, Per; Chung, Chi Yung; Yang, Jiandong et al.

Ingår i Renewable energy, s. 1014-1025, 2018

• DOI för Eigen-analysis of hydraulic-mechanical-electrical coupling mechanism for small signal stability of hydropower plant

Active Current Sharing Control Method for Rotating Thyristor Rectifiers on Brushless Dual-Star Exciters

Nøland, Jonas Kristiansen; Evestedt, Fredrik; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 893-896, 2018

• DOI för Active Current Sharing Control Method for Rotating Thyristor Rectifiers on Brushless Dual-Star Exciters

Linear synthetic inertia for improved frequency quality and reduced hydropower wear and tear

Saarinen, Linn; Norrlund, Per; Yang, Weijia; Lundin, Urban

Ingår i International Journal of Electrical Power & Energy Systems, s. 488-495, 2018

• DOI för Linear synthetic inertia for improved frequency quality and reduced hydropower wear and tear

Testing of Active Rectification Topologies on a Six-Phase Rotating Brushless Outer Pole PM Exciter

Nøland, Jonas Kristiansen; Evestedt, Fredrik; Pérez-Loya, Jesús José; Abrahamsson, Johan et al.

Ingår i IEEE transactions on energy conversion, s. 59-67, 2018

• DOI för Testing of Active Rectification Topologies on a Six-Phase Rotating Brushless Outer Pole PM Exciter

Hydraulic damping mechanism of low frequency oscillations in power systems: Quantitative analysis using a nonlinear model of hydropower plants

Yang, Weijia; Sundqvist, Per; Lidenholm, Johan; Yang, Jiandong et al.

Ingår i Applied Energy, s. 1138-1152, 2018

• DOI för Hydraulic damping mechanism of low frequency oscillations in power systems: Quantitative analysis using a nonlinear model of hydropower plants

Allocation of Frequency Control Reserves and its Impact on Wear and Tear on a Hydropower Fleet

Saarinen, Linn; Norrlund, Per; Yang, Weijia; Lundin, Urban

Ingår i IEEE Transactions on Power Systems, s. 430-439, 2018

• DOI för Allocation of Frequency Control Reserves and its Impact on Wear and Tear on a Hydropower Fleet

Wear reduction for hydro power turbines considering frequency quality of power systems: a study on controller filters

Yang, Weijia; Norrlund, Per; Saarinen, Linn; Yang, Jiandong et al.

Ingår i IEEE Transactions on Power Systems, s. 1191-1201, 2017

• DOI för Wear reduction for hydro power turbines considering frequency quality of power systems: a study on controller filters

Harmonically Time Varying, Traveling Electromagnetic Fields along a Laminate Approximated by a Homogeneous, Anisotropic Block with Infinite Length

Marcusson, Birger; Lundin, Urban

Ingår i Progress in Electromagnetics Research B, s. 65-81, 2017

• DOI för Harmonically Time Varying, Traveling Electromagnetic Fields along a Laminate Approximated by a Homogeneous, Anisotropic Block with Infinite Length

Harmonically Time Varying, Traveling Electromagnetic Fields along a Plate and a Laminate with a Rectangular Cross Section, Isotropic Materials and Infinite Length

Marcusson, Birger; Lundin, Urban

Ingår i Progress in Electromagnetics Research B, s. 117-136, 2017

• DOI för Harmonically Time Varying, Traveling Electromagnetic Fields along a Plate and a Laminate with a Rectangular Cross Section, Isotropic Materials and Infinite Length
• Ladda ner fulltext (pdf) av Harmonically Time Varying, Traveling Electromagnetic Fields along a Plate and a Laminate with a Rectangular Cross Section, Isotropic Materials and Infinite Length

Design and Characterization of a Rotating Brushless Outer Pole PM Exciter for a Synchronous Generator

Nøland, Jonas Kristiansen; Evestedt, Fredrik; Pérez-Loya, J. José; Abrahamsson, Johan et al.

Ingår i IEEE transactions on industry applications, s. 2016-2027, 2017

• DOI för Design and Characterization of a Rotating Brushless Outer Pole PM Exciter for a Synchronous Generator

Performance tests of a permanent magnet thrust bearing for a hydropower synchronous generator test-rig

Pérez-Loya, Jesús José; Abrahamsson, Johan; Evestedt, Fredrik; Lundin, Urban

Ingår i ACES Journal, s. 704-711, 2017

Axial Magnetic Fields, Axial Force, and Losses in the Stator Core and Clamping Structure of a Synchronous Generator with Axially Displaced Stator

Marcusson, Birger; Lundin, Urban

Ingår i Electric power components and systems, s. 410-419, 2017

• DOI för Axial Magnetic Fields, Axial Force, and Losses in the Stator Core and Clamping Structure of a Synchronous Generator with Axially Displaced Stator

Demonstration of active compensation of unbalanced magnetic pull in synchronous machines

Pérez-Loya, J. Jose; Abrahamsson, C. Johan. D.; Lundin, Urban

Ingår i CIGRE Science & Engineering, s. 98-107, 2017

Standstill Frequency Response Test on a Synchronous Machine Extended With Damper Bar Measurements

Bladh, Johan; Wallin, Mattias; Saarinen, Linn; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 46-56, 2016

• DOI för Standstill Frequency Response Test on a Synchronous Machine Extended With Damper Bar Measurements

Simple Method to Calculate the Force between Thin Walled Solenoids

Pérez-Loya, J. José; Lundin, Urban

Ingår i Progress In Electromagnetics Research M, s. 93-100, 2016

• DOI för Simple Method to Calculate the Force between Thin Walled Solenoids

Comparison of Thyristor-Controlled Rectification Topologies for a Six-Phase Rotating Brushless Permanent Magnet Exciter

Nøland, Jonas Kristiansen; Hjelmervik, Karina Bakkeløkken; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 314-322, 2016

• DOI för Comparison of Thyristor-Controlled Rectification Topologies for a Six-Phase Rotating Brushless Permanent Magnet Exciter

Field Measurements and System Identification of Three Frequency Controlling Hydropower Plants

Saarinen, Linn; Norrlund, Per; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 1061-1068, 2015

• DOI för Field Measurements and System Identification of Three Frequency Controlling Hydropower Plants

Power system flexibility need induced by wind and solar power intermittency on time scales of 1-14 days

Saarinen, Linn; Dahlbäck, Niklas; Lundin, Urban

Ingår i Renewable energy, s. 339-344, 2015

• DOI för Power system flexibility need induced by wind and solar power intermittency on time scales of 1-14 days

Axial Magnetic Fields at the Ends of a Synchronous Generator at Different Points of Operation

Marcusson, Birger; Lundin, Urban

Ingår i IEEE transactions on magnetics, 2015

• DOI för Axial Magnetic Fields at the Ends of a Synchronous Generator at Different Points of Operation

Optimization of Force Between Cylindrical Permanent Magnets

Perez-Loya, J. Jose; Lundin, Urban

Ingår i IEEE Magnetics Letters, 2014

• DOI för Optimization of Force Between Cylindrical Permanent Magnets

Use of a finite element model for the determination of damping and synchronizing torques of hydroelectric generators

Ranlöf, Martin; Bladh, Johan; Lundin, Urban

Ingår i International Journal of Electrical Power & Energy Systems, s. 844-851, 2013

• DOI för Use of a finite element model for the determination of damping and synchronizing torques of hydroelectric generators

Torsional stability of hydropower units under influence of subsynchronous oscillations

Bladh, Johan; Sundqvist, Per; Lundin, Urban

Ingår i IEEE Transactions on Power Systems, s. 3826-3833, 2013

• DOI för Torsional stability of hydropower units under influence of subsynchronous oscillations

Damper winding influence on unbalanced magnetic pull in salient pole generators with rotor eccentricity

Wallin, Mattias; Bladh, Johan; Lundin, Urban

Ingår i IEEE transactions on magnetics, s. 5158-5165, 2013

• DOI för Damper winding influence on unbalanced magnetic pull in salient pole generators with rotor eccentricity

Dynamic Unbalanced Pull from Field Winding Turn Short Circuits in Hydropower Generators

Wallin, Mattias; Lundin, Urban

Ingår i Electric power components and systems, s. 1672-1685, 2013

• DOI för Dynamic Unbalanced Pull from Field Winding Turn Short Circuits in Hydropower Generators

Form Factors and Harmonic Imprint of Salient Pole Shoes in Large Synchronous Machines

Ranlöf, Martin; Lundin, Urban

Ingår i Electric power components and systems, s. 900-916, 2011

• DOI för Form Factors and Harmonic Imprint of Salient Pole Shoes in Large Synchronous Machines

Reduction of unbalanced magnetic pull in synchronous machines due to parallel circuits

Wallin, Mattias; Ranlöf, Martin; Lundin, Urban

Ingår i IEEE transactions on magnetics, s. 4827-4833, 2011

• DOI för Reduction of unbalanced magnetic pull in synchronous machines due to parallel circuits

On Permeance Modeling of Large Hydrogenerators With Application to Voltage Harmonics Prediction

Ranlöf, Martin; Perers, Richard; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 1179-1186, 2010

• DOI för On Permeance Modeling of Large Hydrogenerators With Application to Voltage Harmonics Prediction

Estimation of Hydropower Generator Parameters Through Field Simulations of Standard Tests

Lidenholm, Johan; Lundin, Urban

Ingår i IEEE transactions on energy conversion, s. 931-939, 2010

• DOI för Estimation of Hydropower Generator Parameters Through Field Simulations of Standard Tests

Finite Element Analysis of a Permanent Magnet Machine with Two Contra-rotating Rotors

Ranlöf, Martin; Lundin, Urban

Ingår i Electric power components and systems, s. 1334-1347, 2009

• DOI för Finite Element Analysis of a Permanent Magnet Machine with Two Contra-rotating Rotors

Method for modeling time-dependent nonuniform rotor/stator configurations in electrical machines

Lundin, Urban; Wolfbrandt, Arne

Ingår i IEEE Transactions on Magnetics, s. 2976-2980, 2009

• DOI för Method for modeling time-dependent nonuniform rotor/stator configurations in electrical machines

Core Loss Prediction in Large Hydropower Generators: Influence of Rotational Fields

Ranlöf, Martin; Wolfbrandt, Anna; Lidenholm, Johan; Lundin, Urban

Ingår i IEEE Transactions on Magnetics, s. 3200-3206, 2009

• DOI för Core Loss Prediction in Large Hydropower Generators: Influence of Rotational Fields

Poynting theorem applied to cable wound generators

Bolund, Björn; Leijon, Mats; Lundin, Urban

Ingår i IEEE transactions on dielectrics and electrical insulation, s. 600-605, 2008

• DOI för Poynting theorem applied to cable wound generators

Poynting Vector Analysis of Synchronous Generators Using Field Simulations

Lundin, Urban; Bolund, Björn; Leijon, Mats

Ingår i IEEE transactions on magnetics, s. 3601-3606, 2007

• DOI för Poynting Vector Analysis of Synchronous Generators Using Field Simulations

Saturation Effects on Unbalanced Magnetic Pull in a Hydroelectric Generator With an Eccentric Rotor

Perers, Richard; Lundin, Urban; Leijon, Mats

Ingår i IEEE transactions on magnetics, s. 3884-3890, 2007

• DOI för Saturation Effects on Unbalanced Magnetic Pull in a Hydroelectric Generator With an Eccentric Rotor

Theory of strongly correlated electron systems. II. Including correlation effects into electronic structure calculations

Lundin, Urban; Sandalov, Igor; Eriksson, Olle

Ingår i International Journal of Quantum Chemistry, s. 1046-1055, 2005

• DOI för Theory of strongly correlated electron systems. II. Including correlation effects into electronic structure calculations

Enhanced Inertia using amplified power response from synchronous machines compared with frequency derivative-based inertia

Fregelius, Martin; Albuquerque, Vinicius; Lundin, Urban; Norrlund, Per

Full scale hybrid hydroelectric lithium-ion energy storage for supplying frequency containment reserve

Fregelius, Martin; Lundin, Urban; Norrlund, Per

Altering Flux Density Harmonics in the Air-gap of Synchronous Machines by Active Control of the Field Current

Evestedt, Fredrik; Pérez-Loya, Jose. J.; Abrahamsson, C. Johan. D.; Lundin, Urban

Ingår i IEEE Transactions on Industrial Electronics

Analysis of emerging technologies in the hydropower sector

Kougias, Ioannis; Aggidis, George; Avellan, Francois; Deniz, Sabri et al.

Ingår i Renewable & sustainable energy reviews, 2019

• DOI för Analysis of emerging technologies in the hydropower sector
• Ladda ner fulltext (pdf) av Analysis of emerging technologies in the hydropower sector

Development of synchronous generators for Swedish hydropower: A review

Perers, Richard; Lundin, Urban; Leijon, Mats

Ingår i Renewable & sustainable energy reviews, s. 1008-1017, 2007

• DOI för Development of synchronous generators for Swedish hydropower: A review

Validation of the Analytical Prediction of the Damper Winding Pole-to-Pole Impedance in Hydro Generators

Ridder, Andreas; de Barros, Allan; Lundin, Urban; Hernnäs, Bo et al.

Ingår i 2024 27TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, ICEMS, s. 1911-1918, 2024

A concept to ensure spill discharge capacity during grid blackout and flooding

Strömme Mattsson, Adam; Lundin, Urban; Billstein, Mats; Nordström, E.

Ingår i Management for Safe Dams, s. 769-777, 2023

Electrical dump-loads increasing spill capacity

Strömme Mattsson, Adam; Norrlund, Per; Lundin, Urban

Ingår i Hydropower R&D days 2023., 2023

Start of a synchronous motor using rotor field polarity inversion and rotor back-emf sensing

Lundin, Urban; Evestedt, Fredrik; Abrahamsson, Johan; Pérez, José et al.

Ingår i 2020 International Conference on Electrical Machines (ICEM), s. 338-344, 2020

• DOI för Start of a synchronous motor using rotor field polarity inversion and rotor back-emf sensing

Experimentally validated model of a fast switched salient pole rotor winding

Felicetti, Roberto; Abrahamsson, C. Johan D.; Lundin, Urban

Ingår i 2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD), s. 150-156, 2019

• DOI för Experimentally validated model of a fast switched salient pole rotor winding
• Ladda ner fulltext (pdf) av Experimentally validated model of a fast switched salient pole rotor winding

Hardware Implementation of A Synthetic Inertia System for Grid Stability

Fregelius, Martin; Lundin, Urban

Ingår i 2019 8th International Conference on Renewable Energy Research and Applications (ICRERA), s. 186-190, 2019

• DOI för Hardware Implementation of A Synthetic Inertia System for Grid Stability

Experimentally validated model of a fast switched salient pole rotor winding

Felicetti, Roberto; Abrahamsson, C. J. D.; Lundin, Urban

Ingår i 2019 Ieee Workshop On Electrical Machines Design, Control And Dagnosis (Wemdcd), Vol 1, s. 150-156, 2019

Improving frequency control from Kaplan turbines to fulfill grid codes

Dahlborg, Elin; Norrlund, Per; Saarinen, Linn; Lundin, Urban

Ingår i HYDRO 2019, Porto, Portugal, 14-16 October, 2019., 2019

• Ladda ner fulltext (pdf) av Improving frequency control from Kaplan turbines to fulfill grid codes

Time Domain Signature Analysis of Synchronous Generator under Broken Damper Bar Fault

Ehya, Hossein; Nysveen, Arne; Nilssen, Robert; Lundin, Urban

Ingår i 45Th Annual Conference Of The Ieee Industrial Electronics Society (IECON 2019), s. 1423-1428, 2019

Magnetic thrust bearing for a 10 MW hydropower generator with a Kaplan turbine

Abrahamsson, Curt Johan David; Pérez-Loya, Jesús José; Fregelius, Martin; Evestedt, Fredrik et al.

2018

Damper Winding Fault Analysis in Synchronous Machines

Sahoo, Subrat; Holmgren, Fredrik; Rodriguez, Pedro; Pérez, José et al.

Ingår i 2018 XIII international conference on electrical machines (ICEM), s. 1789-1795, 2018

Evaluation of different power electronic interfaces for control of a rotating brushless PM exciter

Nøland, Jonas Kristiansen; Evestedt, Fredrik; Pérez-Loya, Jesús José; Abrahamsson, Johan et al.

Ingår i Proceedings Of The IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, s. 1924-1929, 2016

Initial Performance Tests of a Permanent Magnet Thrust Bearing for a Hydropower Synchronous Generator Test-Rig

Perez-Loya, J. Jose; Abrahamsson, Johan; Evestedt, Fredrik; Lundin, Urban

2016

Design and characterization of a rotating brushless PM exciter for a synchronous generator test setup

Nøland, Jonas Kristiansen; Evestedt, Fredrik; Pérez-Loya, Jesus José; Abrahamsson, Johan et al.

Ingår i Design and characterization of a rotating brushless PM exciter for a synchronous generator test setup, s. 259-265, 2016

• DOI för Design and characterization of a rotating brushless PM exciter for a synchronous generator test setup

Full-scale test and modelling of the frequency control dynamics of the Nordic power system

Saarinen, Linn; Norrlund, Per; Lundin, Urban; Agneholm, Evert et al.

Ingår i 2016 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING (PESGM), 2016

• DOI för Full-scale test and modelling of the frequency control dynamics of the Nordic power system

Step time response evaluation of different synchronous generator excitation systems

Nøland, Jonas Kristiansen; Lundin, Urban

Ingår i Step time response evaluation of different synchronous generator excitation systems, 2016

• DOI för Step time response evaluation of different synchronous generator excitation systems

Tuning primary frequency controllers using robust control theory in a power system dominated by hydropower

Saarinen, Linn; Norrlund, Per; Lundin, Urban

2016

Full-scale test and modelling of the frequency control dynamics of the Nordic power system

Saarinen, Linn; Norrlund, Per; Lundin, Urban; Agneholm, Evert et al.

2016

• DOI för Full-scale test and modelling of the frequency control dynamics of the Nordic power system

Magnetic Modeling and Measurement of Forces Between Permanent Magnet Rings used as Passive Magnetic Bearings

Pérez-Loya, Jesus José; Rodriguez, E.; Hedlund, Magnus; Stephan, R. M. et al.

2013

Construction of a Permanent Magnet Thrust Bearing for a Hydropower Generator Test Setup

Pérez-Loya, Jesus José; de Santiago, Juan; Lundin, Urban

2013

Voltage stability at hydropower stations influenced by close-located wind farms

Lidström, Erica; Wall, Daniel; Persson, Jonas; Lundin, Urban

2012

Design and construction of a synchronous generator test setup

Wallin, Mattias; Ranlöf, Martin; Lundin, Urban

s. 1-5, 2010

• DOI för Design and construction of a synchronous generator test setup

Comparison of field and circuit generator models in single machine infinite bus system simulations

Lidenholm, Johan; Ranlöf, Martin; Lundin, Urban

Ingår i Electrical Machines (ICEM), 2010 XIX International Conference on, 2010

• DOI för Comparison of field and circuit generator models in single machine infinite bus system simulations

The Rotating Field Method Applied to Damper Loss Calculation in Large Hydrogenerators

Ranlöf, Martin; Lundin, Urban

2010

• DOI för The Rotating Field Method Applied to Damper Loss Calculation in Large Hydrogenerators

Effects of including automatic excitation control in transient field simulations of hydrogenerators

Lidenholm, Johan; Ranlöf, Martin; Lundin, Urban

Ingår i Proceedings of the 44th International Universities Power Engineering Conference, 2009

Developments in Rotor Dynamical Modeling of Hydropower units

Aidanpää, J.-O; Gustavsson, R. K.; Lundström, N. L. P; Karlsson, M. et al.

2009

Simulation of a Radial Flux Permanent Magnet Generator with Two Contra-Rotating Rotors

Ranlöf, Martin; Connor, Gary; Lundin, Urban

2008

Losses in Axial-Flux Permanent-Magnet Coreless Flywheel Energy Storage Systems

de Santiago Ochoa, Juan; Goncalves de Oliveira, Janaína; Lundin, Johan; Larsson, Anders et al.

2008

High Voltage Generators; Ideas behind them and Operation Data

Leijon, Mats; Bolund, Björn; Lundin, Urban

2006

Magnetic thrust bearing for a hydropower unit with a Kaplan turbine

Pérez-Loya, J. Jose; Evestedt, Fredrik; Lundin, Urban

2017

Inertia estimation methods for hydropower units

Dahlborg, Elin; Norrlund, Per; Saarinen, Linn; Özcelikkale, Ayca et al.

Salient pole electrical machine

Felicetti, Roberto; Lundin, Urban

2022

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