The single-chip microcomputer control 3-phases full controlled trigger
system design
Abstract
The application of electronic technology has deep into the agricultural economic
construction, transportation, space technology, national defense modernization, medical,
environmental protection, and People's Daily life in all areas, enter the new century power
electronic technology, so more widely in power electronic technology research is more
important. In recent years, more and more application in the national power electronics
industry, some advanced technologies of the country, after processing of electric power
electronic technology has reached more than half the total energy.
This paper mainly introduces the MCU based on MCS - 51 series three-phase
AT89C52 chip controlled rectifier bridge type all control circuit and the circuit principle of
trigger circuit and control circuit and software consists of senior programming language
C51. Specific operation by frequency voltage transformer in the three-phase after under
control chip at different moments of the pulse signal to control the SCR silicon rectifier is
corresponding to load power DC. The control mode is the main advantages of high stability
and reliability of output waveform characteristics of strong anti-jamming. Trigger circuit
structure is simple, flexible control, temperature, control accuracy can be compensated by
software, can adjust arbitrarily limits have won the wide recognition. And in many
industrial control will get to good use.
Keywords: thyrister MCS - 51 single-chip Microcontrollertriggering Angle synchronous
signal
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