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project:

Jan 2023

Jan 2024

Completed

Wanted and unwanted Forces in generators, modelling and control

This project will provide better models and understanding of transient phenomena in generators, both electrical transients and forces due to electrical transients (faults), and mechanical instabilities.

Research activities in this project will entail the following themes:

  • Synchronous, transient and sub-transient behavior from the stator and the rotor perspectives in a machine without damper bars.
  • Demonstrate damping using power electronics in a smaller generator without damping bars with laminated rotor.
  • Demonstrate the asynchronous start of a damperless synchronous machine by using its excitation system.
  • Measure the transient torque on a salient pole synchronous machine during symmetrical and unsymmetrical faults.
  • Effects of the damper bars and parallel armature circuits on torque disturbances and unbalanced forces produced by mechanical or magnetic dissymetries.

Contact

Urban Lundin

Research Area Responsible

Uppsala University

Email

Publications

Simulation of Rapid Voltage Edge Related Voltage Surges in Highly Inductive Windings with Frequency Dependent Parameters. Roberto Felicetti, Jesus Jose Perez-Loya, Claes Urban Lundin, Journal paper, Progress In Electromagnetics Research B, Vol. 99, 1-21, 2023

A Synchronous Machine Transient Model Based upon an Algebraic Loop Accounting for Nonlinearity and Cross-Magnetization. R. Felicetti, U. Lundin, Journal paper, 18 February 2023

Run-Up Transient Analysis for Salient Pole Wound Field Synchronous Motors: Field winding and power electronics implications for a smoother and cooler asynchronous start, Felicetti, Roberto, Uppsala universitet, PhD-Thesis, 2023

An Alternative Run-Up Strategy for Salient Pole Wound Field Synchronous Machines. Roberto Felicetti; Vinícius M. de Albuquerque; Urban Lundin, Journal paper, 2025