【摘要】 为了克服传统配电静止无功补偿器(D-STATCOM)主电路拓扑结构存在的缺陷,提出了一种新型主电路拓扑结构——基于变压器隔离型链式逆变器的主电路拓扑结构。进行了基于载波移相空间矢量脉冲宽度调制(SVM)脉冲控制策略的仿真研究。在三相直流电容共用情况下,给出了不平衡负荷补偿的控制算法。基于以上原理的±10kvarD-STATCOM的实验结果表明了所提主电路结构的有效性及不平衡负荷补偿控制方法的正确性和实用性。更多还原

【Abstract】 A new main electrical circuit topology was developed based on a transformer-isolated chain-circuit inverter. The system characteristics were analyzed using a Matlab simulation of the phase-shift Space Vector Modulation pulse control strategy. The control method compensates for unbalanced loads as a function of the DC voltages shared by the three phases. Tests on a ±10 kVar system show that the topology and the control system are effective.更多还原