Energy feedback device

• Main Authors: HE JINPING, LU JIMING, FU XUEQIANG, YANG JIAWEI, DENG FUNENG, MAO CHENGXIONG, XIA JIANGTAO, HUANG XIAOYAN
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2010
• 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 utility model discloses an energy feedback device, which comprises an active inverter circuit, a filter reactor and a feedback control circuit. The active inverter circuit comprises a three-phase voltage type inverter circuit formed by insulated gate bipolar transistors, and the feedback control circuit is formed by a peripheral detection circuit and a DSP control circuit. The peripheral detection circuit sends voltage signals and synchronizing signals to the DSP control circuit, and the DSP control circuit automatically identifies and starts or stops voltage calculation, amplitude control algorithm and correctness algorithm through electricity network phase sequence, and sends SPWM pulse to the active inverter circuit to control the whole energy feedback device. The device has the advantages of realization of braking electric energy feedback of elevators, excellent feedback effect, high power factor, stable and reliable system work, and convenient utilization.