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Application of carrier exchange modulation technique in multi-level cascaded SAPF
Author(s): 
Pages: 14-18
Year: Issue:  6
Journal: Relay

Keyword:  cascade multilevelSAPFcapacitor voltagecarrier exchange modulation;
Abstract: 电容电压不平衡是影响级联H桥多电平并联有源电力滤波器(SAPF)安全可靠运行的关键问题.通过分析载波相移调制技术(CPS-SPWM)对直流侧电容电压的影响,提出了一种基于控制直流侧电容电压平衡的载波调换调制技术,确立了双电压环与电流环结合的三闭环SAPF控制策略.这种调制方式算法简单、易实现,能在较小开关频率下实现较好的补偿效果的同时,有效地解决级联H桥多电平SAPF直流侧电压平衡问题.仿真和实验证明,该载波调换调制技术是有效、实用的,能对直流侧电容电压平衡起到良好的控制效果.
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