Digitization And Automation Reform Abuou The Rectifier Controller Of Muliashi Leach Plant

Nowadays, the thyristor rectifier unit as AC/DC power conversion equipment, application in metallurgical, chemical, electric power and other industries more and more widely, and plays a very important role in the enterprise and industry?In the thyristor rectifier unit, the controller of pulse trigger as its brain center, the pros and cons of the trigger pulse quality not only determines the quality of the output rectifier unit DC power good or bad, but also for rectifier unit can be safe, reliable and stable operation play an important role In the past, pulse trigger controller are Composed by analog circuit, its circuit structure is complicated, so it is difficult to debug, pulse low control precision, poor symmetry, it directly affects the performance of the thyristor rectifier unit, make the output power quality discount greatly? At the same time, the automation level is not high also, rectifier unit failed to fully realize the centralized monitoring and control functions? Along with the advance of digital circuit, especially the application of microprocessor, the use of advanced microcontroller as the control core of digital trigger, not only makes the hardware circuit is greatly simplified, but also because of its high speed operation performance, greatly improve the response speed and control precision of the pulse?This article first analyzed the 12 pulses rectifier circuit consisted by double anti star connection with interphase reactor? Introduces the working principle of rectifier circuit and its related features, understand the thyristor conduction and the requirement to the trigger pulse sequence? Secondly, expounded the basic principle of digital pulse trigger controller, and made design and specifications about the relevant hardware circuit? Finally, the paper analysed the rectifier unit control process requirements, and has carried on the design of the rectifier unit automation control system, including PLC programming, PC monitoring software configuration and touchscreen interface configuration?Through the rectifier unit and automation control system debugging, made the thyristor rectifier unit to form a rectifier unit with digital pulse trigger controller as the core control unit, with the help of a programmable controller PLC, PC monitor software and touch screen monitor software to realize monitoring, control and operation in the integration of automation system, not only improve the quality of the output DC power and the work efficiency of the thyristor rectifier unit, and greatly improve the reliability and safety of commutation system?...