Cascade type multi-level inverter is adopted to high power AC drives due to small harmonic components of the output voltage and facilitating greater modularity.
级联型多电平变频器输出电压谐波含量小,易于实现模块化,适用于高压大功率场合。
参考来源 - 三电平H桥级联型逆变器Consequently; topology of three-level H-bridge cascaded type multi-level inverter with clamped-diode is specified. Furthermore, both operating principle and mathematical model are presented.2.
主要包括以下内容：1．对多电平变换器的一些传统拓扑和调制方法作出了概述，在此基础上对新型二极管箝位三电平H桥单元级联多电平拓扑展开了详细的研究，给出了工作原理分析并建立了数学模型。
参考来源 - 高压变频器无速度传感器矢量控制研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper analyzed the Neutral Point Excursion method(NPEM)of PWM control with Cascaded Multi-cell Multi-Level Inverter.
本文介绍了级联多单元高压变频器使用中点漂移法解决单元故障时提高输出电压的方法。
Based on this, the thesis also researches PWM control methods of multi-level inverter and introduces the carrier PWM method of three-level inverter in detail.
在此基础上，研究了多电平逆变器的各种PWM控制方法，并对三电平逆变器的载波pwm方法进行了详细介绍。
The topology and modulation method of high-power inverter is introduced. Described the implementation principle of multi-level inverter with cascaded H bridge based on 2-level control technique.
论文首先对多电平逆变器发展前景进行概述，介绍了大功率逆变器的拓扑结构及调制方法。
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