High accuracy AC -DC conversion circuit

• Main Authors: ZHOU LIUCHUN, YU ZHIFEI, YANG QI, HAO ZHENYANG
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2017
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The utility model discloses a high accuracy AC -DC conversion circuit, including PID regulating circuit, pulse width modulation circuit, voltage/current signal processing circuit circuit, voltage feedback signal treatment circuit and AC -DC conversion main circuit, the AC -DC conversion main circuit is including the rectifier bridge circuit, MOS pipe and the output circuit that connect gradually, the input difference junction current processing circuit of PID regulating circuit and voltage feedback processing circuit's output, pulse width modulation circuit's controlled end is connected to the output of PID regulating circuit, and the controlled end of MOS pipe is connected to pulse width modulation circuit's output. The utility model discloses a voltage, the two closed -loop control modes of electric current adopt active power factor correction technology to produce the break -make that pulse -width modulated wave control MOS managed, and exportable stable voltage can satisfy the performance index requiremen