High-power inverter digital control system and method based on SOPC technology

Abstract

The invention discloses a high-power inverter digital control system based on the SOPC technology. According to the system, an analog signal processing module ACE, an ARM Cortex M3 kernel, a dual-port ARM and a bottom-layer controller are integrated inside a chip, functions of the dual-port RAM and the bottom-layer controller are all achieved through very high speed integrated circuit hardware description language (VHDL) programming, the analog signal processing module ACE is in communication with the dual-port RAM through an APB bus, the ARM Cortex M3 kernel is in communication with the dual-port RAM through an AHB bus, and the dual-port RAM is in communication with the bottom-layer controller. The system has the advantages of being high in integration level, low in system cost, low in complex rate, high in adaptability, high in interference resistance, high in reliability, high in stability, capable of greatly reducing design risks and cost and the complexity of hardware circuit design and greatly improving design flexibility, and capable of being widely used in many occasions.

Description

technical field [0001] The invention relates to a high-power inverter digital control system and method based on SOPC technology. Background technique [0002] High-power inverter power supply is widely used in electric power, welding and other fields. With the development of SOPC technology such as single-chip microcomputer, DSP, FPGA, and the application of digital technology, the control accuracy, intelligence, stability and human-computer interaction friendliness of high-power inverter power system have been greatly improved. However, in the workplace of high-power inverter power supply, it is often full of various strong electromagnetic interference and high-frequency disturbance. Taking welding power supply as an example, since the welding process is a complex change process including metallurgy, physics, chemistry and other factors , as a kind of energy conversion equipment, the inverter welding power supply works in a complex and harsh environment with strong interf...

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Problems solved by technology

However, in the workplace of high-power inverter power supply, it is often full of various strong electromagnetic interference and high-frequency disturbance. Taking welding power supply as an example, since the welding process is a complex change process including metallurgy, physics, chemistry and other factors , as a kind of energy conversion equipment, the inverter welding power supply works in a complex and harsh environment with strong interference. There are many interference factors such as high-frequency switching of power switch tubes, impact of rectifier diodes, and external electromagnetic radiation, resulting in poor reliability of many domestic equipment. High repair rate

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