Electricity load-flow control device

• Main Author: WANG, LI
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2012
• 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

An electricity load-flow control device, coupled to and between a first grid system and a second grid system, includes: an induction machine coupled to and between the first grid system and the second grid system, and controlled to transmit the actual power of the micro grid system to the city grid system, or vice versa; a control circuit, according to the power transmitted between the second grid system and the induction machine , configured to output a driving signal including the voltage phase sequence, wherein, the voltage phase sequence changes to positive or negative based on the transmitted power more or less than a reference power; and a motor, coupled to the control circuit and the induction machine, for receiving the driving signal, and converting the driving signal to a mechanical force torque, to control the active power transporting direction. Thus, the invention is low cost, also needs no additional heat dissipation device and protective mechanism.