在级H桥逆变器中基于准修改的牛顿方法的选择性波消除
Bisma Saif1, Uzma Masood1, Adil Sarwar1
1Department of Electrical Engineering, ZHCET, Aligarh Muslim University, Aligarh, 202002, India.
Scientific reports
|October 19, 2024
概括
这项研究引入了一种新的准修改牛顿方法,用于在多级转换器中选择性消除波. 该方法精确计算切换角度,减少总波扭曲 (THD) 和提高效率.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
背景情况:
- 对于中压,高功率应用,多级转换器是首选的,因为与双级转换器相比,它们的效率更高,波扭曲率更低.
- 选择性波消除 (SHE) 对于在多级转换器中实现高质量的电压波形至关重要.
研究的目的:
- 实施一个先进的数值方法来准确计算SHE切换角度.
- 为了减少计算复杂性,并提高SHE在多层转换器中的融合速度.
主要方法:
- 准修改牛顿方法的应用,这是布罗登方法的延伸.
- 在5,7和9层的级联式H桥逆变器上实施.
- 通过模拟和实验结果进行验证.
主要成果:
- 在广泛的调制指数范围内精确计算切换角度.
- 在总波扭曲 (THD) 中显著减少.
- 减少的根平均平方 (RMSE) 和平均绝对偏差 (MAD) 错误.
结论:
- 准修改牛顿方法为SHE提供了一个更简单,更高效的计算和更快的融合解决方案.
- 该方法有效地减少了THD和错误,验证了其准确性和可用于多级转换器的实用性.
关键词:
布式H桥 (CHB) 是一个桥梁.多级逆变器 多级逆变器脉冲宽度调制 (PWM) 是一种方法.准修改的牛顿方法.根的平均平方误差 (RMSE)选择性波消除 (SHE) 是一种选择性的波消除.总波扭曲 (THD) 是指总的波扭曲.更多相关视频
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