Driving circuit for inverter welding power source

Abstract

The invention discloses a driving circuit for an inverter welding power source. The driving circuit comprises a pulse transformer T1, an input end of a primary winding of the pulse transformer T1 is connected with an inverter bridge, an output end of a secondary winding is at least connected with an alternating current pulse shaping circuit, the inverter bridge comprises a first inverter bridge and a second inverter bridge, the first inverter bridge is connected with a first input end of the primary winding of the pulse transformer T1, the second inverter bridge is connected with a second input end of the primary winding of the pulse transformer T1, and the first inverter bridge and the second inverter bridge respectively input two complementary direct current driving pulse signals and alternating current pulse signals with output frequency and pulse width as same as those of the direct current driving pulse signals. By the aid of the driving circuit for the inverter welding power source, driving is more stable, interference resistance and universality are better, a circuit structure can be simplified, peripheral devices are decreased, arrangement of wires is easier, and driving performance is improved.

Description

technical field [0001] The invention relates to an inverter drive circuit, in particular to a drive circuit for an inverter welding power supply. Background technique [0002] With the increasingly widespread application of high-power transistors such as IGBT and MOSFET in inverter power supplies, the driving technology, an important aspect of IGBT and MOSFET application technology, has also developed rapidly, and has evolved into a wide variety of topological forms. Drive technology plays a vital role in the application of high-power transistors such as IGBT and MOSFET, which affects the stability, efficiency and service life of the entire inverter power supply. Therefore, for different inverter power supply topologies, power Level and operating frequency, it is necessary to select the appropriate drive technology scheme, topology and component parameters. At present, there are various types of driving circuits and various driving waveforms, but some are not optimized, and...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of driving circuits and various driving waveforms, but some of them are not optimized, and some of them are too complicated.

Images