| 9344005 |
Method and apparatus for producing three-phase current |
Ngai-Man Ho, Francisco Canales |
2016-05-17 |
| 9331486 |
Method and apparatus for detecting islanding conditions of a distributed grid |
Sami Pettersson, Leonardo-Augusto Serpa, Ngai-Man Ho, Antonio Coccia, Alexandre Oudalov +1 more |
2016-05-03 |
| 9331563 |
Active snubber topology |
Tin Ho Li, Ngai-Man Ho, Jonathan Bradshaw |
2016-05-03 |
| 9030854 |
Method and apparatus for zero-sequence damping and voltage balancing |
Sami Pettersson, Ngai-Man Ho |
2015-05-12 |
| 8929108 |
Method and apparatus for controlling a grid-connected converter |
Ngai-Man Ho, Sami Pettersson |
2015-01-06 |
| 8751177 |
Method and arrangement for estimating angular frequency |
Antonio Coccia, Leonardo-Augusto Serpa, Sami Pettersson, Yales De-Novaes |
2014-06-10 |
| 8704499 |
Method and arrangement for tracking the maximum power point of a photovoltaic module |
Tuomas Pulli, Matti Karppanen |
2014-04-22 |
| 8553434 |
Control method for single-phase grid-connected LCL inverter |
Antonio Coccia, Leonardo-Augusto Serpa, Mikko Paakkinen, Sami Pettersson |
2013-10-08 |
| 7904495 |
Repetitive controller to compensate for odd harmonics |
Jesus Leyva Ramos |
2011-03-08 |
| 7779061 |
Repetitive controller for compensation of periodic signals |
Jesus Leyva Ramos |
2010-08-17 |
| 6940187 |
Robust controller for controlling a UPS in unbalanced operation |
Alex Stankovic, Paolo Mattavelli |
2005-09-06 |
| 6862199 |
Adaptive controller for d-statcom in the stationary reference frame to compensate for reactive and harmonic distortion under unbalanced conditions |
Alex Stankovic, Paolo Mattavelli |
2005-03-01 |
