A high-voltage plasma discharge power supply device based on STM32 adjustable voltage

Abstract

The invention discloses a high-voltage plasma discharge power supply device based on STM32 adjustable voltage, include the main circuit, Button and display circuit, A control circuit and a power supply circuit, the main circuit includes a rectifier bridge, Filter capacitor, inverter circuit, Hall voltage sensor, Hall current sensor and boost transformer, A control circuit includes a STM 32 minimumsystem, download circuit, serial communication circuit, An overcurrent protection circuit, a remote start-stop control circuit, a soft start control circuit, a SPI FLASH circuit, an overheat protection circuit, an undervoltage protection circuit, a PWM driving circuit, an ADC conversion circuit, a voltage-current conversion circuit and a frequency detection circuit, and a key and display circuitcomprise a key, an indicator light and an LCD display screen; The invention can improve the production efficiency, the processing quality and the production safety, meanwhile, the circuit of the invention adds a plurality of protective circuits to increase the reliability.

Description

technical field [0001] The invention relates to the field of discharge equipment, in particular to a high-voltage plasma discharge power supply equipment based on STM32 adjustable voltage. Background technique [0002] In the field of plastic processing, the newly processed plastic film is a non-polar polymer with low surface tension, and neither ink nor adhesive can adhere firmly to it, so it needs to be treated by corona treatment. The principle is to add high-frequency and high-voltage electricity to the processing equipment to ionize the air, generate various ions to impact the plastic film, increase the surface area and roughness of the plastic, and the ozone generated by ionization can also oxidize the plastic film and improve the surface of the plastic film. can. [0003] The power supply equipment that provides high-frequency and high-voltage power for corona treatment equipment is generally a high-voltage inverter power supply. The high-voltage inverter power supp...

AI Technical Summary

Problems solved by technology

[0005] 1. Large size, heavy weight, inconvenient to move;

[0006] 2. Using analog circuit control, the circuit is complicated and the adaptability is poor;

[0007] 3. Only the output voltage can be adjusted, and the current, power, and frequency cannot be adjusted adaptively. The process performance is poor, and the voltage adjustment accuracy is poor.

[0008] 4. Poor system reliability and insufficient protection measures

Only short-circuit protection, no over-undervoltage, over-current, overheating protection

[0009] 5. Poor anti-interference ability, because high-power transformers and other components are added to the power supply, electromagnetic interference will be generated during work, which will affect the work of the control circuit

[0010] 6. Different equipment has different requirements for power supply voltage and current, and some equipment even requires high voltage above 10kV, which has high requirements for the withstand voltage and safety of the equipment, and most of the current power supply output voltage is fixed The maximum voltage that can be achieved does not meet the requirements, and the safety protection cannot be guaranteed

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