US 12,136,872 B2
Buck-converter-based drive circuits for driving motors of compressors and condenser fans
Joseph G. Marcinkiewicz, St. Peters, MO (US)
Assigned to Copeland LP, Sidney, OH (US)
Filed by Copeland LP, Sidney, OH (US)
Filed on Jun. 24, 2022, as Appl. No. 17/849,564.
Application 17/849,564 is a division of application No. 15/487,226, filed on Apr. 13, 2017, granted, now 11,387,729.
Claims priority of provisional application 62/398,641, filed on Sep. 23, 2016.
Claims priority of provisional application 62/398,658, filed on Sep. 23, 2016.
Claims priority of provisional application 62/323,607, filed on Apr. 15, 2016.
Claims priority of provisional application 62/323,505, filed on Apr. 15, 2016.
Claims priority of provisional application 62/323,498, filed on Apr. 15, 2016.
Prior Publication US 2022/0320997 A1, Oct. 6, 2022
Int. Cl. H02M 1/42 (2007.01); F25B 49/02 (2006.01); H02M 1/08 (2006.01); H02M 1/14 (2006.01); H02M 1/32 (2007.01); H02M 1/44 (2007.01); H02M 5/458 (2006.01); H02M 7/06 (2006.01); H02M 7/5387 (2007.01); H02P 5/74 (2006.01); H02P 27/06 (2006.01); H02M 1/00 (2006.01)
CPC H02M 1/4225 (2013.01) [F25B 49/025 (2013.01); H02M 1/08 (2013.01); H02M 1/14 (2013.01); H02M 1/32 (2013.01); H02M 1/42 (2013.01); H02M 1/44 (2013.01); H02M 5/458 (2013.01); H02M 7/06 (2013.01); H02P 5/74 (2013.01); H02P 27/06 (2013.01); F25B 2600/021 (2013.01); F25B 2600/024 (2013.01); F25B 2600/111 (2013.01); F25B 2700/151 (2013.01); H02M 1/0009 (2021.05); H02M 1/0032 (2021.05); H02M 1/008 (2021.05); H02M 1/327 (2021.05); H02M 1/4208 (2013.01); H02M 1/4216 (2013.01); H02M 1/4291 (2021.05); H02M 7/53871 (2013.01); Y02B 30/70 (2013.01); Y02B 70/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A drive circuit comprising:
a rectification circuit configured to rectify a first alternating current (AC) voltage signal to generate a rectified voltage signal;
a buck converter configured to downconvert the rectified voltage signal to a direct current (DC) voltage signal, wherein the DC voltage signal is supplied to a DC bus;
an inverter configured to convert the DC voltage signal to a second AC voltage signal and supply the second AC voltage signal to a compressor motor and to a condenser fan motor,
wherein peak voltages of the second AC voltage signal are less than peak voltages of the first AC voltage signal; and
a control module configured to (i) transition a switch of the buck converter between ON and OFF states at a first frequency for rising and falling portions of the rectified voltage signal, and (ii) transition the switch of the buck converter between ON and OFF states at a second frequency for portions of the rectified voltage signal at a peak AC voltage, wherein the second frequency is higher than the first frequency.