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电网技术  2015 

新型大功率级联式二极管H桥整流器

DOI: 10.13335/j.1000-3673.pst.2015.03.037, PP. 829-836

Keywords: 无移相变压器,功率因数校正,级联,多电平

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Abstract:

提出了一种适用于电压源型逆变器的变环宽空间矢量滞环电流控制方法。该方法借助传统空间矢量的调制方法,从参考电压矢量的瞬时采样位置获取滞环控制器的滞环宽度。基于逆变器零电压矢量对应的误差电流调整α轴β轴2个多阶滞环比较器的滞环宽度,由滞环比较器的输出值根据开关矢量表确定下一控制周期的逆变器输出电压矢量。该滞环控制器维持了空间矢量滞环控制器动态响应迅速,系统对负载参数变化的不敏感,优选相邻空间电压矢量输出等特点。与固定环宽的空间矢量滞环控制器相比,该方法简化了

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