Energy-saving pulse triggering type thyristor driving circuit

• Main Authors: LIU JUN, XIAO KUI, ZHAI PANFEI, QI BENSHENG
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2012
• 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; GENERATION

The invention discloses an energy-saving pulse triggering type thyristor driving circuit. The circuit comprises a linear conversion circuit (1), a voltage comparison circuit (2), a delayed switching-off circuit (3) and a relay driving and protection circuit (4), which are connected in turn. A thyristor is triggered through the combination of the four circuits, the pre-charging process of a frequency converter circuit can be finished, and a relay is switched off after the pulse triggering driving of the thyristor, so that electric energy is saved. Moreover, the circuit is small in volume, easy to implement and low in cost, and has broad application prospect. The relay in the frequency converter circuit can be protected, and the reliability, safety and stability of the circuit are improved.