准Z源逆变器的低谐波含量梯形调制优化策略

doi:10.3969/j.issn.1008-0198.2024.03.014

湖南电力 ›› 2024, Vol. 44 ›› Issue (3): 96-104.doi: 10.3969/j.issn.1008-0198.2024.03.014

准Z源逆变器的低谐波含量梯形调制优化策略

易文静¹, 张阳¹, 杨育鑫¹, 罗朝旭¹, 程谆²

1.湖南工业大学电气与信息工程学院,湖南株洲 412007;
2.湖南铁道职业技术学院,湖南株洲 412001

收稿日期:2024-02-02 修回日期:2024-03-14 出版日期:2024-06-25 发布日期:2024-07-10
通信作者: 程谆(1988),女,湖南宁乡人,硕士,讲师,主要研究方向为现代电力电子技术与系统。
作者简介:易文静(1998),女,重庆人,硕士研究生在读,主要研究方向为电力电子与新能源发电技术。张阳(1988),男,山东潍坊人,副教授,硕士研究生导师,主要研究方向为电力电子与新能源发电技术。杨育鑫(1998),男,贵州铜仁人,硕士研究生在读,主要研究方向为永磁同步电机滑模控制。罗朝旭(1987),男,湖南衡阳人,讲师,硕士研究生导师,主要研究方向为微电网逆变器控制。
基金资助:
国家自然科学基金项目(52207205);湖南省自然科学基金项目(2023JJ50191)

Optimization Strategy of Low Harmonic Content Trapezoidal Modulation for Quasi-Z-Source Inverter

YI Wenjing¹, ZHANG Yang¹, YANG Yuxin¹, LUO Zhaoxu¹, CHENG Zhun²

1. College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China;
2. Hunan Railway Professional Technology College, Zhuzhou 412001, China

Received:2024-02-02 Revised:2024-03-14 Online:2024-06-25 Published:2024-07-10

摘要/Abstract

摘要： 针对准Z源逆变器谐波污染和功率器件电压应力高的问题,提出一种基于梯形波的优化策略。该调制策略通过选取合适的梯形化率,在保证直流电压利用率的同时大幅降低准Z源逆变器输出电流的总谐波畸变率,从而提高电能质量。此外,选取梯形波作为调制波能有效降低准Z源网络中电容及功率器件的电压应力。采用MATLAB/Simulink软件对所提出的调制策略进行仿真分析,以确保其正确性和有效性。最后,通过RT-LAB实验平台对基于梯形波的调制策略进行进一步验证。

关键词: 准Z源逆变器, 脉冲宽度调制, 总谐波畸变率, 电压应力

Abstract: :A trapezoidal waveform-based optimization strategy is proposed in this paper to address the problems of harmonic pollution and high voltage stress on power devices in quasi-Z-source inverter. The modulation strategy improves the electrical energy quality by selecting the appropriate ladder shaping rate while ensuring the voltage utilization of the DC-link voltage and significantly reducing the total harmonic wave deformation of the quasi-Z-source inverter output current. In addition, the selection of a trapezoidal waveform as the modulating waveform can effectively reduce the voltage stress on the capacitors and power devices in the quasi-Z-source network. The proposed modulation strategy is simulated and analyzed using MATLAB/Simulink software to ensure its correctness and effectiveness. Finally, the trapezoidal waveform-based modulation strategy is further validated by the RT-LAB experimental platform.

Key words: quasi-Z-source inverter, pulse width modulation, total harmonic distortion rate, voltage stress

中图分类号:

TM464

易文静, 张阳, 杨育鑫, 罗朝旭, 程谆. 准Z源逆变器的低谐波含量梯形调制优化策略[J]. 湖南电力, 2024, 44(3): 96-104.

YI Wenjing, ZHANG Yang, YANG Yuxin, LUO Zhaoxu, CHENG Zhun. Optimization Strategy of Low Harmonic Content Trapezoidal Modulation for Quasi-Z-Source Inverter[J]. Hunan Electric Power, 2024, 44(3): 96-104.

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准Z源逆变器的低谐波含量梯形调制优化策略

Optimization Strategy of Low Harmonic Content Trapezoidal Modulation for Quasi-Z-Source Inverter

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