CAJ | 학술논문

提出了一种新型单桥臂电感模块化多电平拓扑，相比于常规的模块化多电平变流器（MMC）拓扑结构，每相节省了一个桥臂电感。针对这种不对称的拓扑结构，提出了一种控制方法：以省去下桥臂电感的变流器为例，在下桥臂级联模块的给定电压中加入与上桥臂电感电压对称的虚拟桥臂电感电压，实现变流器上、下桥臂对称运行。并结合 MMC环流抑制算法给出了完整的变流器控制框图。最后，通过实验证明了本文所提出算法的有效性。
제출료일충신형단교비전감모괴화다전평탁복，상비우상규적모괴화다전평변류기（MMC）탁복결구，매상절성료일개교비전감。침대저충불대칭적탁복결구，제출료일충공제방법：이성거하교비전감적변류기위례，재하교비급련모괴적급정전압중가입여상교비전감전압대칭적허의교비전감전압，실현변류기상、하교비대칭운행。병결합 MMC배류억제산법급출료완정적변류기공제광도。최후，통과실험증명료본문소제출산법적유효성。
A new modular multilevel converter (MMC) with single arm inductor is proposed, and compared to the conventional MMC topology one arm inductor is saved per each phase. To this asymmetric converter, a control method is proposed. Taking the MMC without lower arm inductors for example, a virtual arm inductor voltage is added to the reference voltage of cascaded modules in lower arm to make the converter symmetrically operating. And combined to circulating current restraint algorithm, a complete control block diagram is presented. At last experimental results demonstrate the effectiveness of the proposed control strategies.