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首页> 外文期刊>Power Electronics, IET >Design and implementation of a novel nine-level MT-MLI with a self-voltage-balancing switching technique
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Design and implementation of a novel nine-level MT-MLI with a self-voltage-balancing switching technique

机译：具有自平衡开关技术的新型九级MT-MLI的设计与实现

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摘要

In this study, a novel nine-level modified T-type multilevel inverter (MT-MLI) with a simple capacitor balancing technique is proposed. The proposed MT-MLI circuit can generate higher levels with a single DC source and the minimum number of switching components. Each phase of the proposed topology contains ten switches and one flying capacitor (FC). The DC source voltage is divided into two parts with the help of capacitors. Phase disposition-sine pulse-width modulation technique is employed to regulate the DC-link capacitors and FC voltages. To reduce the control complexity of FC-based circuits, quarter-cycle selector is introduced to control the FC voltage within the given half fundamental cycle using redundant states, so an external capacitor charging setup is not required. Furthermore, to highlight the potential merits of the proposed MT-MLI, the comparison is made among state-of-the-art MLIs. Simulation verification of the MT-MLI is done using MATLAB/Simulink, and then hardware verifications are done using the laboratory prototype setup with Opal-RT controller. Finally, adequate results are presented to validate the proposed MT-MLI.
机译：在这项研究中，提出了一种新颖的具有简单电容器平衡技术的九级改进型T型多级逆变器（MT-MLI）。所提出的MT-MLI电路可以通过单个直流电源和最少数量的开关组件来产生更高的电平。建议拓扑的每个阶段都包含十个开关和一个飞跨电容器（FC）。直流电源电压借助电容器分为两部分。采用相位正弦脉冲宽度调制技术来调节直流母线电容器和FC电压。为了降低基于FC的电路的控制复杂性，引入了四分之一周期选择器以使用冗余状态在给定的半个基本周期内控制FC电压，因此不需要外部电容器充电设置。此外，为了突出建议的MT-MLI的潜在优点，在最先进的MLI之间进行了比较。使用MATLAB / Simulink完成MT-MLI的仿真验证，然后使用带有Opal-RT控制器的实验室原型设置完成硬件验证。最后，提供了足够的结果来验证所提出的MT-MLI。

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