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首页> 外文期刊>IEEE transactions on industrial informatics >Modified Single-Carrier Multilevel SPWM and Online Efficiency Enhancement for Single-Phase Asymmetrical NPC Grid-Connected Inverter
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Modified Single-Carrier Multilevel SPWM and Online Efficiency Enhancement for Single-Phase Asymmetrical NPC Grid-Connected Inverter

机译：改进的单相载体多级SPWM和在线效率增强单相缺乏NPC网格连接逆变器

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摘要

In this paper, a modified single-carrier and multimodulation sine pulse width modulation (MSCMM-SPWM) is proposed to simplify the implementation of the single-phase asymmetrical neutral-point clamped grid-connected inverter (ANPC-GCI) for the PV generation system application. Furthermore, the expressions of the total switching loss and grid current total harmonic distortion (THD) of ANPC-GCI controlled by the proposed MSCMM-SPWM are derived. Then taking the grid current THD meet the grid-connected standard in the entire operational range as the constraint, an efficiency enhancement scheme for ANPC-GCI based on online adjusting the carrier frequency and the obtained THD expression is proposed. The control configuration of ANPC-GCI, including the proposed MSCMM-SPWM and online efficiency enhancement scheme, is designed. The detailed experimental results verify the correctness and feasibility of the proposed MSCMM-SPWM and the efficiency enhancement scheme.
机译：在本文中，提出了一种改进的单载波和多仿状正弦脉冲宽度调制（MSCMM-SPWM），以简化PV生成系统的单相非对称中性点钳网连接逆变器（ANPC-GCI）的实现应用。此外，推导出由所提出的MSCMM-SPWM控制的ANPC-GCI的总切换损耗和网格电流总谐波失真（THD）的表达。然后采用网格电流THD在整个操作范围内满足网格连接的标准作为约束，提出了基于在线调整载波频率和所获得的THD表达的ANPC-GCI的效率增强方案。设计了ANPC-GCI的控制配置，包括所提出的MSCMM-SPWM和在线效率增强方案。详细的实验结果验证了所提出的MSCMM-SPWM和效率增强方案的正确性和可行性。

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