Walmir Freitas
Walmir Freitas
Verified email at dsee.fee.unicamp.br - Homepage
Title
Cited by
Cited by
Year
Comparative analysis between ROCOF and vector surge relays for distributed generation applications
W Freitas, W Xu, CM Affonso, Z Huang
IEEE Transactions on power delivery 20 (2), 1315-1324, 2005
3942005
Three-phase doubly fed induction generators: an overview
M Tazil, V Kumar, RC Bansal, S Kong, ZY Dong, W Freitas, HD Mathur
IET Electric Power Applications 4 (2), 75-89, 2010
2592010
Comparative analysis between synchronous and induction machines for distributed generation applications
W Freitas, JCM Vieira, A Morelato, LCP Da Silva, VF Da Costa, ...
IEEE transactions on Power Systems 21 (1), 301-311, 2006
2072006
A practical method for assessing the effectiveness of vector surge relays for distributed generation applications
W Freitas, Z Huang, W Xu
IEEE Transactions on Power Delivery 20 (1), 57-63, 2005
1872005
Method for determining the maximum allowable penetration level of distributed generation without steady-state voltage violations
HM Ayres, W Freitas, MC De Almeida, LCP Da Silva
IET generation, transmission & distribution 4 (4), 495-508, 2010
1792010
Performance of frequency relays for distributed generation protection
JCM Vieira, W Freitas, W Xu, A Morelato
IEEE transactions on power delivery 21 (3), 1120-1127, 2006
1652006
Impacts of AC generators and DSTATCOM devices on the dynamic performance of distribution systems
W Freitas, A Morelato, W Xu, F Sato
IEEE transactions on power delivery 20 (2), 1493-1501, 2005
1642005
An investigation on the selection of filter topologies for passive filter applications
AB Nassif, W Xu, W Freitas
IEEE transactions on Power Delivery 24 (3), 1710-1718, 2009
1572009
Wilsun Xu; Morelato, A.,“Efficient coordination of ROCOF and frequency relays for distributed generation protection by using the application region,” Power Delivery
JCM Vieira, W Freitas
IEEE Transactions on 21 (4), 1878-1884, 2006
156*2006
An Event Window Based Load Monitoring Technique for Smart Meters
M Dong, PCM Meira, W Xu, W Freitas
IEEE Transactions on Smart Grid 3, 787-796, 2012
1432012
Fault location in distribution systems based on smart feeder meters
FCL Trindade, W Freitas, JCM Vieira
IEEE transactions on Power Delivery 29 (1), 251-260, 2013
1242013
Assessing the collective harmonic impact of modern residential loads—Part I: Methodology
D Salles, C Jiang, W Xu, W Freitas, HE Mazin
IEEE transactions on power delivery 27 (4), 1937-1946, 2012
1212012
Performance of ROCOF relays for embedded generation applications
CM Affonso, W Freitas, W Xu, LCP Da Silva
IEE Proceedings-Generation, Transmission and Distribution 152 (1), 109-114, 2005
1172005
Influence of excitation system control modes on the allowable penetration level of distributed synchronous generators
W Freitas, JCM Vieira, A Morelato, W Xu
IEEE Transactions on Energy Conversion 20 (2), 474-480, 2005
1092005
A Monte Carlo simulation platform for studying low voltage residential networks
R Torquato, Q Shi, W Xu, W Freitas
IEEE Transactions on Smart Grid 5 (6), 2766-2776, 2014
1072014
An investigation on the nondetection zones of synchronous distributed generation anti-islanding protection
JCM Vieira, W Freitas, W Xu, A Morelato
IEEE transactions on power delivery 23 (2), 593-600, 2008
1072008
Formulas for predicting the dynamic performance of ROCOF relays for embedded generation applications
JCM Vieira, W Freitas, Z Huang, W Xu, A Morelato
IEE Proceedings-Generation, Transmission and Distribution 153 (4), 399-406, 2006
962006
An analytical method for analysis of large-disturbance stability of induction generators
AP Grilo, A de Assis Mota, LTM Mota, W Freitas
IEEE Transactions on power systems 22 (4), 1861-1869, 2007
922007
Impact of DG interface controls on the Sandia frequency shift antiislanding method
X Wang, W Freitas, W Xu, V Dinavahi
IEEE Transactions on Energy Conversion 22 (3), 792-794, 2007
872007
Phase-decoupled method for three-phase power-flow analysis of unbalanced distribution systems
JCM Vieira, W Freitas, A Morelato
IEE Proceedings-Generation, Transmission and Distribution 151 (5), 568-574, 2004
852004
The system can't perform the operation now. Try again later.
Articles 1–20