摘要
为了在电压跌落瞬间满足电网对风力发电系统的要求,本文对常规的矢量电流控制器和双矢量电流控制器下的三相电压型PWM整流器分别进行了研究,并重点介绍了双矢量电流控制器情况下的整流器数学模型、参考电流及控制电压的计算方法。在文中利用Matlab对两种电流控制器控制下的三相电压型PWM整流器分别进行了仿真,并对它们在电压跌落情况下的性能做了分析比较。通过分析研究可以明确,双矢量电流控制器更适合于PWM整流器在电压瞬间跌落情况下的控制。
In this paper general Vector Current Controller （VCC） and Dual Vector Current Controller （DVCC） are described and implemented separately to control pulse width modulation （PWM） rectifier effectively and meet rule of electric network under voltage dips. Mathematical modeling of PWM rectifier, computing method of reference current and controlling voltage for DVCC are detailedly described. PWM rectifier controlled by VCC and DVCC are studied and simulated by Matlab separately, and the results of simulation are compared and analyzed. The result of simulation shows that robust operation of PWM rectifier unbalanced voltage dips can be obtained by DVCC.
出处
《电气应用》
北大核心
2007年第9期52-56,共5页
Electrotechnical Application
