US 11,864,814 B2
System and method for harmonic control of dual-output generators
Daniel A. Friedrichs, Aurora, CO (US); Daniel J. Costinett, Knoxville, TN (US); Bradford C. Trento, Knoxville, TN (US); and Chongwen Zhao, Knoxville, TN (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Aug. 24, 2021, as Appl. No. 17/410,125.
Application 17/410,125 is a continuation of application No. 16/812,736, filed on Mar. 9, 2020, granted, now 11,096,737.
Application 16/812,736 is a continuation of application No. 15/004,923, filed on Jan. 23, 2016, granted, now 10,582,962.
Prior Publication US 2021/0378728 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/14 (2006.01); A61B 18/12 (2006.01); A61B 17/32 (2006.01); H02M 7/5395 (2006.01); A61B 18/00 (2006.01); A61B 18/16 (2006.01)
CPC A61B 18/1206 (2013.01) [A61B 17/320092 (2013.01); A61B 18/14 (2013.01); A61B 18/1445 (2013.01); H02M 7/5395 (2013.01); A61B 18/16 (2013.01); A61B 2017/320094 (2017.08); A61B 2017/320095 (2017.08); A61B 2018/0063 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00994 (2013.01); A61B 2018/128 (2013.01); A61B 2018/1266 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A dual frequency inverter comprising:
at least one switching element operated at a switching angle; and
a controller coupled to the at least one switching element and configured to modulate the switching angle using dual-frequency selective harmonic elimination modulation to simultaneously generate a first waveform at a first frequency and a secondary waveform at a second frequency and eliminate at least one harmonic waveform between the first frequency and the second frequency.