A hybrid analytical-numerical approach for the analysis of salient-pole synchronous generators with a symmetrical damper cage

The equivalent circuit approach has been widely exploited for the theoretical analysis of electromagnetic devices. However, in the field of classical wound-field synchronous generators, the presence of the damper cage complicates the analysis of such devices and the accurate prediction of the inherent induced currents is still matter of ongoing research. 12Focus is given to the accurate prediction of the no-load voltage waveform, by implementing a hybrid analytical-numerical model for a specific alternator.

[1]  Urban Lundin,et al.  Design and construction of a synchronous generator test setup , 2010, The XIX International Conference on Electrical Machines - ICEM 2010.

[2]  Neil Brown,et al.  Damper cage loss reduction and no-load voltage THD improvements in salient-pole synchronous generators , 2016 .

[3]  David Gerada,et al.  Improved Damper Cage Design for Salient-Pole Synchronous Generators , 2017, IEEE Transactions on Industrial Electronics.

[4]  Alexander Schwery,et al.  Additional Losses in the Damper Winding of Large Hydrogenerators at Open-Circuit and Load Conditions , 2010, IEEE Transactions on Industrial Electronics.

[5]  P. Bolognesi.  A mid-complexity analysis of long-drum-type electric machines suitable for circuital modeling , 2008, 2008 18th International Conference on Electrical Machines.

[6]  Alberto Tessarolo,et al.  Time-Stepping Finite-Element Analysis of a 14-MVA Salient-Pole Shipboard Alternator for Different Damper Winding Design Solutions , 2012, IEEE Transactions on Industrial Electronics.

[7]  Alexander Schwery,et al.  Cooling Airflow, Losses, and Temperatures in Large Air-Cooled Synchronous Machines , 2010, IEEE Transactions on Industrial Electronics.

[8]  Konrad Weeber,et al.  Use of a permeance model to predict force harmonic components and damper winding effects in salient pole synchronous machines , 2001, IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485).

[9]  A.M. Knight,et al.  Investigation and Simulation of fields in large salient-pole synchronous Machines with skewed stator slots , 2005, IEEE Transactions on Energy Conversion.

[10]  M. M. Liwschitz-Garik.  Harmonics of the Salient-Pole Synchronous Machine and Their Effects Part III. Differential Leakage of the Damper Winding with Respect to the Main Wave. Current Distribution in the Damper Bars , 1958, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems.