Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11418039 | Apparatus and methods for reducing generator frequency variation | Tony Olivo, Robert W. Johnson, Mengbin Ben Yang, Preston Miller | 2022-08-16 |
| 11362519 | Apparatus and methods for soft grid interconnection of distributed generation assets | Robert W. Johnson | 2022-06-14 |
| 11056908 | Uninterruptible power supply systems and methods using isolated interface for variably available power source | Robert W. Johnson, Yu Liu, Bobby L. Compton, Robert C. Sebald | 2021-07-06 |
| 10862310 | Hybrid power generation system using generator with variable mechanical coupling and methods of operating the same | Tony Olivo | 2020-12-08 |
| 10615597 | Grid power supply apparatus and methods using energy storage for transient stabilization | Tony Olivo, Robert W. Johnson, Doug Moorehead | 2020-04-07 |
| 10574055 | Transient power stabilization device with active and reactive power control | Mengbin Ben Yang, Tony Olivo, Robert W. Johnson, Gopalakrishnan Balakrishnan | 2020-02-25 |
| 10289080 | Multi-generator applications using variable speed and solid state generators for efficiency and frequency stabilization | Tony Olivo, Robert W. Johnson | 2019-05-14 |
| 10199858 | Uninterruptible power supply systems and methods using isolated interface for variably available power source | Robert W. Johnson, Yu Liu, Bobby L. Compton, Robert C. Sebald | 2019-02-05 |
| 9312699 | Island grid power supply apparatus and methods using energy storage for transient stabilization | Tony Olivo, Robert W. Johnson, Doug Moorehead | 2016-04-12 |
| 9297862 | Systems and apparatus for fault detection in DC power sources using AC residual current detection | George W. Oughton, Jr., Yu Liu, Debrup Das, Bobby L. Compton | 2016-03-29 |
| 7649758 | Power supply apparatus, methods and computer program products using D-Q domain based synchronization techniques | Kevin L. Van Eyll, Kevin Lee | 2010-01-19 |
| 7508094 | UPS systems having multiple operation modes and methods of operating same | Robert W. Johnson, Rune Lennart Jonsson, Ove Ohman, Joseph C. Paulakonis, Kevin Lee | 2009-03-24 |
| 7403364 | Power system fault characterization using transformed values | Jason Scott Anderson, Kevin L. Van Eyll | 2008-07-22 |
| 7239043 | Power conversion apparatus and methods using an adaptive waveform reference | Kevin Lee VanEyll | 2007-07-03 |
| 6906933 | Power supply apparatus and methods with power-factor correcting bypass mode | — | 2005-06-14 |
| 6549440 | AC power supply apparatus and methods providing output control based on estimated instantaneous reactive power | Frederick Tassitino | 2003-04-15 |