US 12,294,295 B2
Systems and methods of unwanted harmonic content removal for power conversion
Robert S. Wrathall, Scotts Valley, CA (US)
Filed by Robert S. Wrathall, Scotts Valley, CA (US)
Filed on Feb. 28, 2023, as Appl. No. 18/176,376.
Application 18/176,376 is a continuation in part of application No. 17/589,425, filed on Jan. 31, 2022, granted, now 11,637,493.
Application 17/589,425 is a continuation in part of application No. 17/237,973, filed on Apr. 22, 2021, granted, now 11,552,554, issued on Jan. 10, 2023.
Application 17/237,973 is a continuation of application No. 17/102,035, filed on Nov. 23, 2020, granted, now 10,998,815, issued on May 4, 2021.
Prior Publication US 2023/0208284 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 1/42 (2007.01); H02M 1/12 (2006.01); H02M 5/293 (2006.01); H02M 1/00 (2006.01)
CPC H02M 1/4208 (2013.01) [H02M 1/12 (2013.01); H02M 5/293 (2013.01); H02M 1/0009 (2021.05)] 21 Claims
OG exemplary drawing
 
1. An electrical circuit power supply with power factor correction, the electrical circuit power supply comprising:
a switch-mode converter for converting a DC voltage into an AC voltage;
a means for controlling the switch-mode converter with a first control signal in order to control currents in the switch-mode converter in order to control and regulate one of an input voltage or an input current, and to maximize a power factor of an output current into a sinusoidal voltage source at a fundamental frequency;
a means for measuring one of the input voltage or the input current and comparing one of the input voltage or the input current to a first reference signal, and generating a first error signal responsive to a first difference between the first reference signal and one of the input voltage or the input current, the first error signal having a first error frequency bandwidth;
a current measurement means for measuring the output current and generating a current measurement signal from the output current;
a means for generating a second reference signal, the second reference signal comprising a sinusoidal reference voltage or a rectified sinusoidal reference voltage derived from an output reference voltage or another reference voltage, and generating a second difference by subtracting the second reference signal from the current measurement signal; and
a means for generating a second control signal that is proportional to the second difference, the second control signal having a control signal frequency bandwidth, the second control signal being used to control one of a gain or a magnitude of the current measurement signal in order to minimize the second difference.