Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10263558 | Phase loss detection in active front end converters | Kanikesh Yedla, Zhenyu Ye, Prathamesh R. Vadhavkar | 2019-04-16 |
| 9960723 | Motor drive with resonance detection and impedance computation | Shaofeng Zhang, Haihui Lu, Yogesh Patel, Lixiang Wei, Richard A. Lukaszewski | 2018-05-01 |
| 9847733 | Power conversion system with DC bus regulation for abnormal grid condition ride through | Prathamesh R. Vadhavkar, Brian J. Seibel | 2017-12-19 |
| 9651592 | Impedance detector apparatus and method | Russel J. Kerkman, Brian J. Seibel, Shiv Kumar Gupta, Prathamesh R. Vadhavkar | 2017-05-16 |
| 9535133 | Industrial system phase sag detection | Brian J. Seibel, Russel J. Kerkman | 2017-01-03 |
| 9331487 | Method and apparatus for islanding detection for grid tie converters | Zhenhuan Yuan, Shaofeng Zhang, Haihui Lu, Lixiang Wei, Russel J. Kerkman +2 more | 2016-05-03 |
| 9270286 | Phase lock loop with cascade tracking filters for synchronizing an electric grid | Russel J. Kerkman, Brian J. Seibel | 2016-02-23 |
| 9124245 | Adaptive online filter for DC offset elimination | Russel J. Kerkman, Brian J. Seibel | 2015-09-01 |
| 8988026 | Single phase operation of a three-phase drive system | Lixiang Wei, Brian J. Seibel | 2015-03-24 |
| 8816729 | Phase-locked-loop with quadrature tracking filter for synchronizing an electric grid | Russel J. Kerkman, Brian J. Seibel, Carlos Rodriguez Valdez | 2014-08-26 |
| 8704571 | Phase-locked-loop with quadrature tracking filter for synchronizing an electric grid | Russel J. Kerkman, Brian J. Seibel, Carlos Rodriguez Valdez | 2014-04-22 |
| 8570003 | Double fed induction generator converter and method for suppressing transient in deactivation of crowbar circuit for grid fault ridethrough | Haihui Lu, Zhenhuan Yuan, Lixiang Wei, Russel J. Kerkman, Richard A. Lukaszewski | 2013-10-29 |
| 8570773 | Power converter system and method | Gary L. Skibinski | 2013-10-29 |
| 8373406 | Electrical power quality test circuitry and method | Gary L. Skibinski, Richard A. Lukaszewski | 2013-02-12 |