Novel wind-light complementary boost-buck DC-DC converter

• Main Authors: YANG GEN, YOU ZHIPENG, ZHANG ZHIHONG, LI WEI
• Format: Patent
• Language: English
• Published: 07.01.2015
• 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; 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; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The utility model discloses a novel wind-light complementary boost-buck DC-DC converter comprising DC input sources VPV and VWind, switch tubes g1 and g2, freewheeling diodes VD1 and VD2, and a boost inductor L; amplitude of the VPV and the VWind can be same or different; the VWind is DC current, and AC current sent by a draught fan passes a three phase rectifier so as to form the DC current; the switch tubes g1 and g2 can be simultaneously conducted, and can be conducted with certain staggering angle. The novel wind-light complementary boost-buck DC-DC converter can work in a single-input state and a dual-input state, has boost-buck function, can improve DC side input voltage grade, so modulation depth scope of an inverter can be enlarged, thus improving flexibility and stability of the power generation system.