Digitalized three-phase system power factor correction apparatus and correction method

• Main Authors: LIU GANG, LUAN ZHUZHENG, ZHANG YAN, PAN LIYUN, SUN QIANGANG, LU XIAOKAI
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention provides a digitalized three-phase system power factor correction apparatus and a correction method. The digitalized three-phase system power factor correction apparatus comprises a power factor correction main circuit, a PFC controller, a PFC driver and an LCD display screen, wherein the power factor correction main circuit comprises an LCL three-phase filter, a three-phase six-switch full-bridge rectification circuit and a DC filtering capacitor, and the PFC controller comprises a simulation voltage and current signal acquisition module, an algorithm processing module and a digital modulation pulse output module. The algorithm processing module employs a digitalized mode to realize full-decoupling control, the digital modulation pulse output module generates spatial vector modulation pulses according to the output result of the algorithm processing module by using a digitalized pulse-width modulation method to complete driving of three-phase six switches. The power factor is high, the input cu