基于平均電流算法的VIENNA整流技術(shù)的研究

摘要：為了提高三相PFC的穩(wěn)定性和高效性，降低系統(tǒng)成本，設(shè)計(jì)了基于平均電流控制算法的三相VIENNA整流器，該整流器利用平均電流控制算法和VIENNA整流結(jié)構(gòu)相結(jié)合，采用數(shù)字控制方式。為了保證系統(tǒng)在輸出正負(fù)母線正負(fù)電壓平衡，系統(tǒng)引入母線電壓均衡控制。實(shí)驗(yàn)結(jié)果表明，基于該設(shè)計(jì)方法的6,2kW三相PFC整流器，可靠穩(wěn)定，功率因數(shù)可達(dá)到99%，效率可達(dá)到96%。
敘詞：VIENNA整流 平均電流控制 DSP 功率因數(shù) Abstract：In order to improve the stability and efficiency of the three-phase PFC, reduce cost, the design is based on the system control of the three-phase current average algorithm of VIENNA rectifier, this rectifier with the use of the average current control algorithm and VIENNA rectifier structure, and the combination of the digital control mode. In order to guarantee system in the output voltage balance, positive and negative positive and negative bus system introduces the balance control bus voltage. The experimental results show that the design method based on the 6, 5 kW three-phase PFC, reliable and stable, rectifier power factor can achieve 99%, efficiency can reach 97%.. Keyword：VIENNA Rectification, Average current control, DSP, Power factor