ABSTRACT

Matrix converters (MCs) with a two-phase load can be used to drive a symmetrically or independently controlled load. Because MCs do not have a large-capacity energy storage unit when a two-phase output voltage is independently controlled, the ripple in the output power is coupled with the source side. However, the conventional modulation strategy significantly increases the number of low-frequency harmonics in the source side. The harmonic content also increases with the increase in output voltage asymmetry. In this paper, a dual current decoupling control strategy is proposed based on a source-side negative-sequence regulator. This method can suppress the input low-frequency harmonic by tracking and reasonably configuring the pulsating power, thereby improving the source-side performance. Moreover, simulations and experimental results verify the effectiveness of the proposed control strategy.

摘要

具有两相负载的矩阵转换器 (MC) 可用于驱动对称或独立控制的负载。由于MC在两相输出电压独立控制时没有大容量的储能单元，输出功率中的纹波与源侧耦合。然而，传统的调制策略显着增加了源侧低频谐波的数量。谐波含量也随着输出电压不对称性的增加而增加。本文提出了一种基于源侧负序调节器的双电流去耦控制策略。该方法可以通过跟踪和合理配置脉动功率来抑制输入低频谐波，从而提高源侧性能。而且，