摘要
配电网静止同步补偿器(DSTATCOM)是一种用于动态补偿无功、抑制谐波的新型电力电子装置。提出一种应用于DSTATCOM的基于间隔采样的直接电流控制方法,该方法降低了软件计算量,有较好的实时性,无需复杂算法,实现简单、有效。利用开关函数法建立了DSTATCOM数学模型,根据瞬时无功功率理论对控制系统进行设计,在Matlab/Simulink环境中搭建仿真模型,并且研制了一台容量为10 kVA的DSTATCOM实验样机。仿真和实验结果表明,DSTATCOM装置能有效地动态补偿无功、抑制谐波,证明了所提控制方法的正确性和可行性。
Distribution static synchronous compensator（DSTATCOM） is an advanced power electronic device for reactive power dynamic compensation and harmonic suppression.A novel direct current control method for DSTATCOM based on interval sampling is proposed.The control method can reduce computational complexity and has good real-time performance without complicated algorithm which is easy to implement.The mathematics model of DSTATCOM is established using the method of switch function and the control system of DSTATCOM is designed according to the instantaneous reactive power theory.Results obtained by simulations system built in Matlab / SIMULINK and prototype experiments of a 10 kVA DSTATCOM indicate that DSTATCOM can compensate reactive power and eliminate harmonic effectively,which show the validity and feasibility of the proposed control method.
出处
《电力科学与工程》
2013年第7期7-12,共6页
Electric Power Science and Engineering
