US 11,784,553 B2
Resonant frequency tracking for zero voltage switching
Yongduk Lee, Vernon, CT (US); Matthew Robert Pearson, Hartford, CT (US); and Parag M. Kshirsagar, South Windsor, CT (US)
Assigned to GOODRICH CORPORATION, Charlotte, NC (US)
Filed by GOODRICH CORPORATION, Charlotte, NC (US)
Filed on Jun. 1, 2021, as Appl. No. 17/336,129.
Prior Publication US 2022/0385167 A1, Dec. 1, 2022
Int. Cl. H02M 1/08 (2006.01); H02M 7/48 (2007.01); A61L 2/10 (2006.01); A61L 2/24 (2006.01); A61L 2/26 (2006.01); B64D 47/02 (2006.01); H05B 41/36 (2006.01); H01J 61/12 (2006.01); H03L 7/085 (2006.01)
CPC H02M 1/083 (2013.01) [A61L 2/10 (2013.01); A61L 2/24 (2013.01); A61L 2/26 (2013.01); B64D 47/02 (2013.01); H02M 7/4815 (2021.05); H05B 41/36 (2013.01); A61L 2202/11 (2013.01); A61L 2202/14 (2013.01); A61L 2202/25 (2013.01); H01J 61/12 (2013.01); H03L 7/085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for controlling a power signal for zero voltage switching (ZVS), the system comprising:
a voltage zero crossing detection module configured to detect a zero voltage condition in response to an inverter voltage from a resonant inverter crossing zero volts;
a current zero crossing detection module configured to detect a zero current condition in response to an inverter current from the resonant inverter crossing zero amps;
a phase detect module configured to detect actual phase data corresponding to an actual phase angle between the inverter voltage and the inverter current based on the zero voltage condition and the zero current condition;
a comparator configured to determine a phase difference between a desired phase between the inverter voltage and the inverter current and the actual phase angle; and
a controller configured to adjust a property of a resonant inverter to reduce the phase difference based on the phase difference.