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小信号建模和分析用于风能转换系统的准Z源直矩阵转换器
K T Maheswari1, C Kumar2, T Dharma Raj3
1Electrical and Electronics Engineering, Bannari Amman Institute of Technology, Sathyamangalam, 638401, India.
Scientific reports
|November 25, 2025
概括
一种新的近Z源直接矩阵转换器 (QZSDMC) 改善了基于永久磁铁发生器 (PMG) 的直接驱动风能转换系统 (DDWECS) 的电压增益和调节. 这种稳定的系统提高了效率,并减少了风力发电的波扭曲.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 电力电子 电力电子 电力电子
背景情况:
- 直接驱动风能转换系统 (DDWECS) 通常需要增强的电压调节和增益.
- 永久磁铁发生器 (PMG) 常用于DDWECS.
- 现有的转换器在不同条件下面临着电压增益和输出稳定性方面的挑战.
研究的目的:
- 为基于PMG的DDWECS提出和分析一个准Z源直接矩阵转换器 (QZSDMC).
- 为了增强电压增益并确保在不同负载和风速条件下稳定的输出电压调节.
- 评估拟议的QZSDMC系统的稳定性和性能.
主要方法:
- 使用状态空间分析来导出QZSDMC在空间领域的小信号模型.
- 计算和分析转移函数以了解系统动态.
- 进行了稳定性分析,以确认所有输出功率范围内的系统稳定性.
- 具有改进空间向量脉冲宽度调制 (ISVPWM) 的QZSDMC在MATLAB中模拟并通过实验验证.
主要成果:
- 在所有输出功率级别中,QZSDMC表现出稳定的运行,不需要过器.
- 与现有方法相比,拟议的系统显示了性能指标的改进.
- 模拟结果使用1kW,415V,50Hz的实验设置与FPGA处理器进行了验证.
- 检查了关键性能指标,如切换应力,提升因子,总波扭曲和效率.
结论:
- QZSDMC是一个可行的和有效的解决方案,用于增强基于PMG的DDWECS的电压增益和调节.
- 拟议的ISVPWM控制方案确保了系统的稳定性和效率.
- QZSDMC为高效可靠的风能转换提供了一个强大的平台.
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