The converter USES a high order MASH noise shaping technique and a digital decimation filtering part consisting of comb filters and cascade of half band filters.
该转换器采用了高阶MASH噪声成形技术，而其数字抽取滤波部分则由梳状滤波器与级联的半带滤波器构成。
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In this paper, the cascade multilevel converter based on CPS-SPWM and its application to Active Power Filter has been deeply studied in theory and practice.