US 12,278,554 B2
Harmonic suppression apparatus, method, control unit, electrical appliance, and storage medium
Xiaobin Fang, Zhuhai (CN); Jialiang Zheng, Zhuhai (CN); Hongtao Yu, Zhuhai (CN); and Xianyi Song, Zhuhai (CN)
Assigned to Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
Appl. No. 18/269,378
Filed by Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
PCT Filed Oct. 22, 2021, PCT No. PCT/CN2021/125639
§ 371(c)(1), (2) Date Jun. 23, 2023,
PCT Pub. No. WO2022/179141, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 202110217616.4 (CN), filed on Feb. 26, 2021.
Prior Publication US 2024/0136911 A1, Apr. 25, 2024
Prior Publication US 2024/0235372 A9, Jul. 11, 2024
Int. Cl. H02M 1/12 (2006.01); H02M 1/00 (2006.01); H02M 1/42 (2007.01); H02M 7/5387 (2007.01)
CPC H02M 1/123 (2021.05) [H02M 1/0009 (2021.05); H02M 1/4216 (2013.01); H02M 7/53871 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A harmonic suppression apparatus, comprising:
a tuning circuit module, which is connected with a first live wire and a second live wire of a three-phase power supply and is configured to perform resonance regulation processing on a first-phase current inputted through the first live wire and a second-phase current inputted through the second live wire;
a PI-type resonant filtering circuit module, which is respectively connected with the tuning circuit module and a third live wire of the three-phase power supply and is configured to perform harmonic filtering processing on the first-phase current and the second-phase current processed by the tuning circuit module and a third-phase current inputted through a third live wire; and
a rectification circuit module, which is connected with the PI-type resonant filtering circuit module and is configured to perform rectification progressing on the first-phase current, the second-phase current and the third-phase current processed by the PI-type resonant filtering circuit module, to obtain a direct current and output the direct current through a direct current output bus for powering a load.