Arm inductor in a modular multilevel converter (MMC) is used to limit the circulating current
and dc short circuit fault current. The circulating current in MMC is dominated by second …

This paper presents a steady-state model of MMC for the second-order phase voltage ripple
prediction under unbalanced conditions, taking the impact of negative-sequence current …

The 2 N+ 1 submodule unified pulsewidth modulation (SUPWM) is attractive for modular
multilevel converters (MMCs). To generate 2 N+ 1 voltage levels, the SUPWM results in …

为解决风电–多端直流送出系统并网带来的惯量缺失及稳定性问题, 该文提出一种适用于受端换
流站的电压源型控制策略. 在受端换流站利用直流母线等效电容固有动态特性实现无锁相环自主 …

In this study, we first briefly introduce the effect of circulating current control on the
modulation signal of a modular multilevel converter (MMC). The maximum modulation index …

This paper presents a steady-state analysis of the modular multilevel converter (MMC) for
the second order voltage and current ripple prediction under unbalanced conditions, taking …

Even though today's transmission grids are predominantly based on the high voltage
alternating current (HVAC) scheme, interests on high voltage direct current (HVDC) are …

The minimization of circulating currents is a major technical challenge in the modular
multilevel converter (MMC) topology. Circulating currents are an inherent property of the …

A flyback converter based on the two-stage exponential compensation is presented to
reduce the system standby power consumption in this paper. The first-stage exponent circuit …

To take full advantage of multilevel modular converter (MMC) and extend its application in
high voltage direct current (HVDC) transmission systems, the ability to deal with severe …