US 12,334,838 B2
Voltage driving circuit and system and household appliance
Xiaolin He, Guangdong (CN); Wei Huang, Guangdong (CN); Fan Yang, Guangdong (CN); and Wangfa Zhuang, Guangdong (CN)
Assigned to Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai, Guangdong (CN)
Appl. No. 18/682,175
Filed by Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai, Guangdong (CN)
PCT Filed Aug. 9, 2022, PCT No. PCT/CN2022/111091
§ 371(c)(1), (2) Date Feb. 8, 2024,
PCT Pub. No. WO2023/061010, PCT Pub. Date Apr. 20, 2023.
Claims priority of application No. 202111204781.2 (CN), filed on Oct. 15, 2021.
Prior Publication US 2025/0132688 A1, Apr. 24, 2025
Int. Cl. H02M 5/458 (2006.01); H02M 1/00 (2007.01); H02M 7/5387 (2007.01)
CPC H02M 5/458 (2013.01) [H02M 1/0032 (2021.05); H02M 1/007 (2021.05); H02M 7/53871 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A voltage driving circuit comprising:
a diode;
a thin film capacitor;
a resonant circuit configured to be connected to a three-phase power supply and enter a non-resonant operation state in a case where a working current of a load is greater than a preset current;
a rectifier circuit, of which an input end is connected with the resonant circuit;
a switching device, of which a first end is connected with a first output end of the rectifier circuit and an anode of the diode, and a second end is connected with a second output end of the rectifier circuit and a first end of the thin film capacitor, wherein a cathode of the diode is connected with a second end of the thin film capacitor;
an inverter circuit connected with the first end of the thin film capacitor and the second end of the thin film capacitor, and configured to be connected to the load; and
a control device, connected with a control terminal of the switching device, the resonant circuit and the inverter circuit, and configured to transmit a pulse width modulation signal to the switching device in a case where the working current of the load is greater than the preset current.