The thyristor three phase bridge rectifier supplies the power to the DC drive system of mine hoist,it isselected as main harmonic source for colliery power distribution system because of its high-power.Higher harmonic canimpact the three-phase rectifier′s firing angle which can control circuit and cause the lost-control protection not to workfor mine hoist. Through the detection and analysis of mine hoist′s harmonic current when it working,and gave theactual data of harmonic current,devised a passive power ...
【更新日期】
2015-05-29
【分类号】
TD633
【正文快照】
1引言目前,我国煤矿还有很多已建矿井采用直流驱动提升机,直流电源来源于三相晶闸管整流桥,其优点是技术成熟,调速性能好。但在整流器的交流侧存在着大量的高次谐波电流[1-3]。在淮南矿业集团某煤矿,其副井提升机由6 k V交流电压供电,电动机由2组反并联的12脉动桥式整流器提供?
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