基于单元串联多电平型变频器的设计  

Design of Multi-level Frequency Converter Based on Cells Series

作　　者：叶乔亭[1] 吴永祥[1] 

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《工矿自动化》2009年第2期57-59,共3页Journal Of Mine Automation

摘　　要：针对现有高压变频器存在的问题,文章设计了一种新型变频器,详细介绍了该变频器功率单元的硬件组成、工作原理、电路设计及其软件控制的实现方法。该变频器采用单元串联多电平技术,可以得到阶梯SPWM波形,无需输出滤波器,可直接驱动普通电动机。Aiming at the existing problems of high-voltage frequency converter, the paper designed a new type of frequency converter, introduced hardware composition, working principle, circuit design and implementation method of software control of power unit of the frequency converter in details. The frequency converter adopted multi-level technology with cells series, which could obtain stepped SPWM waveforms, and could drive ordinary motor directly with no output filter.

关 键 词：变频器 多电平技术 单元串联 阶梯SPWM波形 

分 类 号：TN773[电子电信—电路与系统]