摘要
针对目前煤矿井下供电系统和用电负荷的实际情况,提出将静止无功发生器(SVG)应用于煤矿井下来实现无功功率补偿的策略。在分析了SVG工作原理的基础上,采用基于瞬时无功功率理论(IPRT)的直接电流控制法,将瞬时电流和电压采样值经坐标变换和电压电流双闭环控制后计算出参考电压值,将其作为空间矢量脉宽调制(SVPWM)的输入,产生与给定电压矢量平均值相等的电压,最终达到补偿目的。实验表明,该控制方法具有良好的可行性。
In view of the current power supply system and the actual situation of electrical loads in the coal mine, static var generator（SVG） is presented to realizing the reactive power compensation in the coal mine.On the basis of the work principle of SVG, direct current control method based on instantaneous reactive power theory （IRPT） is adopted to generator the reference voltage which is changed from instantaneous current and voltage sampling values after coordinate transformation and the double close-loop control.As the input of SVPWM,the reference voltage will be tracked by actual voltage to achieve the purpose of compensation.The experimental results verify that the control method is feasible.
出处
《电力电子技术》
CSCD
北大核心
2012年第9期52-54,66,共4页
Power Electronics
关键词
静止无功发生器
瞬时无功功率
直接电流控制
static var generator
instantaneous reactive power
direct current control
