Parallel controllable reactance device

• Main Authors: HOU YUNYAN, YIN ZHONGDONG, LAN YUN, HOU JIDONG
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2014
• Subjects: BASIC ELECTRIC ELEMENTS; 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; INDUCTANCES; MAGNETS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; 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; TRANSFORMERS

The utility model discloses a parallel controllable reactance device which comprises a controllable electric reactor, two direct-current magnetism-assisting IGBTs and a freewheel diode. The controllable electric reactor is a direct-current magnetism-assisting electric reactor, a main iron core limb in the middle of the controllable electric reactor is divided into two parts to be wound with an upper winding and a lower winding respectively, the middle portions are intersected and connected, the two direct-current magnetism-assisting IGBTs are symmetrically connected to center taps of the two windings on the two sides, and the freewheel diode stretches across the intersected endpoint of the division windings of the iron core limb of the electric reactor. According to the parallel controllable reactance device, the saturability of an iron core is controlled by changing the conduction angles of the IGBTs in the controllable electric reactor to change the equivalent inductance of the iron core, the capacity of th