Φ76mm連軋管主機(jī)拖動(dòng)12相整流控制系統(tǒng)的改進(jìn)分析
ANALYSIS OF THE INNOVATION OF THE 12-PHASE RECTIFIER CONTROL SYSTEM FOR THE MOTOR IN A φ76mm MANDREL MILL
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摘要: 本文對φ76mm連軋管主機(jī)12相整流由兩錯(cuò)位30℃角三相全控橋串經(jīng)聯(lián)組成的原控制系統(tǒng)進(jìn)行了分析,提出了原設(shè)計(jì)的整流控制系統(tǒng)工作不正常的原因。通過分析和實(shí)驗(yàn),采用串聯(lián)兩組橋由滯后30°的脈沖補(bǔ)超前30°脈沖方案對原設(shè)計(jì)進(jìn)行改進(jìn),改進(jìn)后的連軋管機(jī)12相整流控制系統(tǒng)運(yùn)行穩(wěn)定可靠,調(diào)速范圍寬。Abstract: The original 12-phase rectifier control system for the motor in φ76mm mandrel mill, consisting of two 3-phase fully-controlled tandem bridges with an alternative angle 30°, is analysed and the causes which lead to abnormal operation of the system are pointed oat. Based on the analysis and experiments, the original design has been innovated by two sets of tandem bridges in which the pulse with lead angle 30° can be compensated by the pulse with delay angle 30°. The innovaled system operates stably and reliably and can be used to regulate speed in a wide range.
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