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首页> 外文期刊>Power Electronics, IET >Reference Disposition Modulation Method for non-ideal Dual Z-Source Neutral-Point-Clamped Inverter
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Reference Disposition Modulation Method for non-ideal Dual Z-Source Neutral-Point-Clamped Inverter

机译：非理想双Z源中性点钳位逆变器的参考配置调制方法

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摘要

A single stage Z-source Neutral-Point-Clamped (NPC) inverter for buck-boost conversion is considered as a better alternative for the two-staged energy conversion in traditional inverters. The Dual Z-Source Network (DZSN) uses two distinct X-shaped impedance networks to connect two individual dc sources to the inverter circuit. The output voltage boosting can be achieved by selectively shooting-through the power sources in the dual networks. This study proposes a novel modulation method for integrating the shoot-through state to the traditional inverter switching. The performance of the proposed modulation method for DZSN is examined utilising attributes which include, voltage boosting, switching losses, efficiency, etc. In addition, this study also deals with non-ideal DZSN, where the circuit resistance and their respective voltage drops are considered. The presented modulation method uses a single carrier signal which is compared with two sets of sinusoidal reference signals to establish the switching. The theoretical findings of the proposed modulation method are verified using Matlab/Simulink and PSIM software. Moreover, an experimental NPC prototype was built and the results for the different values of modulation index are presented, which validate the applicability of proposed modulation method.
机译：在传统逆变器中，用于降压-升压转换的单级Z源中性点钳位（NPC）逆变器被认为是两阶段能量转换的更好选择。双Z源网络（DZSN）使用两个不同的X形阻抗网络将两个单独的DC源连接到逆变器电路。通过有选择地直通双网络中的电源可以实现输出电压的提升。这项研究提出了一种新颖的调制方法，用于将直通状态集成到传统逆变器开关中。利用包括升压，开关损耗，效率等属性，对提出的DZSN调制方法的性能进行了检查。此外，本研究还涉及非理想DZSN，其中考虑了电路电阻及其各自的压降。提出的调制方法使用单个载波信号，将其与两组正弦参考信号进行比较以建立切换。使用Matlab / Simulink和PSIM软件验证了所提出的调制方法的理论发现。此外，建立了一个实验性的NPC原型，并给出了不同调制指数值的结果，验证了所提出的调制方法的适用性。

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