Digital large-power driving power supply loaded with surge protection circuit

Abstract

The invention discloses a digital large-power driving power supply loaded with a surge protection circuit, which comprises a rectifier filter module, a surge protection circuit, an auxiliary power supply, a CPLD digital control module, an inverter voltage boosting module, a feedback circuit and a comparator, wherein the rectifier filter module, the surge protection circuit, the auxiliary power supply, the CPLD digital control module and the inverter voltage boosting module are sequentially connected; and the inverter voltage boosting module is also connected with the CPLD digital control module via the feedback module and the comparator connected in sequence. The digital large-power driving power supply loaded with a surge protection circuit can be competent for control pulses at 10kb / s in the case of laser processing according to the CPLD-based digital control mode, and stable power output under work for a long time can be ensured; the auxiliary power supply based on a VIPer22A converter and a high-frequency power transformer is adopted, waveform of output voltage is stable, and no large peaks exist; and the frequency response is high, the control is accurate, output current has little ripples, and the laser can be ensured to work stably and for a long time.

Description

technical field [0001] The invention discloses a digital high-power driving power supply loaded with a surge protection circuit, and relates to the technical field of power supply design. Background technique [0002] Laser processing equipment has very high requirements on the power supply. The power supply is the basis for the operation of the equipment. Without a power supply, it does not mean that as long as it is a power supply, it is suitable for metal laser cutting machines. At the same time, the power supply has certain safety hazards, so it is necessary to meet the following requirements. The electric wave of the power grid is controlled between +10%--15%. Due to technical reasons, the quality of my country's power supply is insufficient. Coupled with human factors, this fluctuation range is difficult to control. [0003] Laser processing mainly uses CO, the laser beam is focused on the surface of the material to melt the material, and at the same time, the compresse...

AI Technical Summary

Problems solved by technology

[0006] To sum up, the stability of the existing laser drive power supply has not been well resolved at present, and has become an urgent problem to be solved.

At the same time, in the traditional circuit structure, in order to achieve the processing effect of the regulated DC, the setting of the regulated DC circuit is necessary, but the traditional regulated DC circuit has a complex structure and large power consumption, which increases the cost of circuit design

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