Pulse mig welding power supply system based on stm32
A power supply system and pulse technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of insufficient control, affecting the consistency of the control system, and poor flexibility, so as to reduce switching loss and electrical stress, and overcome the welding process Instability, the effect of reducing electromagnetic interference
Active Publication Date: 2015-09-09
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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Problems solved by technology
[0005] (1) Complex structure
The traditional pulse MIG welding power source is controlled by an analog control system, with a large number of components, complex structure and large volume
[0006] (2) The control is not flexible enough and accurate
The traditional analog control system has limited ability to perform complex processing, the number of components is large, and the parameters of the control system are determined by the parameters of discrete components such as resistors and capacitors. The control system is complicated to debug and has poor flexibility. The consistency of the system, the stability of the parameters is poor, such as temperature drift affects the stability of the control system
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[0033] The present invention will be further described in detail below in conjunction with the drawings and embodiments.
[0034] Such as figure 1 As shown, the embodiment of the pulse MIG welding power source system based on STM32 of the present invention includes an inverter main circuit and a control circuit.
[0035] The main inverter circuit includes an input rectifier filter module, a high frequency inverter module, a power transformation module, and an output rectifier filter module that are electrically connected in sequence; the input end of the input rectifier filter module is connected to the three-phase AC input grid and the output rectifier filter module The output terminal is connected to the arc load.
[0036] The control circuit includes STM32 digital control module, voltage and current detection module, fault protection module, human-machine interface module and high frequency drive module; voltage and current detection module inputs arc load and outputs to STM32 dig...
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The invention discloses an MIG welding power supply system based on STM32. The MIG welding power supply system comprises an inversion main circuit and a control circuit. The inversion main circuit comprises an input rectifying filter module, a high-frequency inverting module, a power transformation module and an output rectifying filter module which are sequentially and electrically connected. The control circuit comprises an SMT32 digital control module, a voltage-current detecting module, a fault protecting module, a man-machine interface module and a high-frequency drive module. The man-machine interface module realizes welding parameter giving through a digital pulse encoder. The MIG welding power supply system has the advantages that an STM32 chip is used to control the pulse MIG welding power supply system, system structure is simple, the control function is achieved through software, high anti-interference capability is achieved, and the problems that traditional pulse MIG welding power supply system is complex in structure, large in size, and inaccurate in parameter giving, and the like are solved.
Description
Technical field [0001] The invention relates to a pulse MIG welding power supply system based on STM32. Background technique [0002] Pulse MIG welding technology is mostly used in high-performance automatic welding occasions. It integrates high efficiency, high quality and automation. Its outstanding process characteristics are: the welding current adjustment range is relatively wide, that is, pulse MIG welding can be used when the average current is less than the critical current value. Under the conditions, the jet transfer is obtained, including all current regions from short-circuit transfer to jet transfer; the molten pool is small, the droplet transfer and the heating of the molten pool metal are intermittent, and it is not easy to flow. It can successfully complete horizontal welding and vertical welding. It is beneficial to realize all-position welding; the droplet transfer process is relatively controllable, which can not only obtain a larger penetration (due to the lar...
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IPC IPC(8): B23K9/10B23K9/095B23K9/173
CPCB23K9/095B23K9/1056B23K9/173
Inventor 董重里吴开源李顺华李华佳胡平
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID