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首页> 外文期刊>Power Electronics, IET >Switch count reduced structure for symmetric bi-directional multilevel inverter based on switch-diode-source cells
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Switch count reduced structure for symmetric bi-directional multilevel inverter based on switch-diode-source cells

机译：基于交换二极管源电池的对称双向多级逆变器的交换机数减小结构

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摘要

Inverters as one of the most important elements of power systems have been profoundly developed in recent decades and their performance has attracted researches in control and structure point of view. In this study, a novel structure based on the switch-diode-source cell is proposed for a multilevel converter that is capable of bidirectional feeding. The proposed structure is presented for symmetrical mode and the number of power electronic devices is decreased in comparison with similar works. Considering recent proposed symmetrical structures, the proposed structure has the superior condition in terms of semiconductor switches and drivers count as well as switching loss. Also, total blocked voltage (TBV) of the proposed converter is compared with conventional and novel symmetrical converters. Then, switch costs of the proposed converter are compared with the structure that its TBV is the lowest. The performance of the proposed symmetrical seven-level converter is analysed and simulated in MATLAB/Simulink for both PWM and selective harmonic elimination switching methods. Not only the results are desirable, but also the experimental results of laboratory prototype validate the simulation results.
机译：逆变器作为电力系统最重要的元素之一，近几十年来已经深入发展，其表现引起了控制和结构观的研究。在该研究中，提出了一种基于开关二极管源电池的新颖结构，用于能够双向进给的多级转换器。所提出的结构用于对称模式，与类似的作品相比，电力电子设备的数量减少。考虑到近期提出的对称结构，所提出的结构在半导体开关和驱动器计数方面具有卓越的条件以及开关损耗。而且，将所提出的转换器的总封闭电压（TBV）与常规和新的对称转换器进行比较。然后，将所提出的转换器的切换成本与其TBV最低的结构进行比较。在MATLAB / Simulink中分析和模拟所提出的对称七级转换器的性能，用于PWM和选择性谐波消除切换方法。不仅可以理想的结果，而且实验室原型的实验结果验证了模拟结果。

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