Active power decoupling for current source converters:An overview scenario

For single-phase current source converters, there is an inherent limitation in DC-side low-frequency power oscillation, which is twice the grid fundamental frequency. In practice, it transfers to the DC side and results in the low-frequency DC-link ripple. One possible solution is to install excessively large DC-link inductance for attenuating the ripple. However, it is of bulky size and not cost-effective. Another method is to use the passive LC branch for bypassing the power decoupling, but this is still not cost-effective due to the low-frequency LC circuit. Recently, active power decoupling techniques for the current source converters have been sparsely reported in literature. However, there has been no attempt to classify and understand them in a systematic way so far. In order to fill this gap, an overview of the active power decoupling for single-phase current source converters is presented in this paper. Systematic classification and comparison are provided for researchers and engineers to select the appropriate solutions for their specific applications

系統連系用マトリックスコンバータにおけるアクティブインピーダンスを用いた動作の安定化に関する研究

国立大学法人長岡技術科学大

入力電流と電力脈動補償のハイブリッド変調による磁気素子共用形DC-単相ACコンバータの高パワー密度化

国立大学法人長岡技術科学大