CAJ | 학술논문

目前电力系统中广泛使用基于矢量运算的单周控制有源滤波器（OCC-APF）来消除谐波，但当三相不对称系统某相电压缺失时，按照传统电压矢量分区将造成单周控制器性能急剧下降。为了解决这种极限情况，本文依据不对称系统下OCC-APF的工作特性，提出了一种由电源电压非零序分量过零点重新划分矢量区间的方案，通过编程和仿真证明所提方法的有效性，该方法的提出对于OCC-APF在电力系统中的推广具有重要意义。
목전전력계통중엄범사용기우시량운산적단주공제유원려파기（OCC-APF）래소제해파，단당삼상불대칭계통모상전압결실시，안조전통전압시량분구장조성단주공제기성능급극하강。위료해결저충겁한정황，본문의거불대칭계통하OCC-APF적공작특성，제출료일충유전원전압비령서분량과영점중신화분시량구간적방안，통과편정화방진증명소제방법적유효성，해방법적제출대우OCC-APF재전력계통중적추엄구유중요의의。
One cycle control active power filter (OCC-APF) based on vector computing is widely used to eliminate harmonics in present power systems. However, when a phase voltage of the three-phase unbalanced system drops to zero, vector computing based OCC-APF which follows traditional voltage vector partition will result in sharp performance decline of the one cycle controller. For this extreme situation, and according to the OCC-APF operating characteristics in unbalanced systems, this paper proposes a new scheme that vector intervals are divided through zero crossings of the non-zero sequence component of the supply voltage. Programming and simulation show that the proposed method is effective, and has important significance for the promotion of OCC-APF in power systems.