英语翻译These last years,multilevel inverters have been introduc

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/07/14 22:06:58

英语翻译
These last years,multilevel inverters have been introduced in order to drive three phase motors.These inverters’ output voltages are almost purely sinusoidal in order to reduce the common mode voltage which causes bearing leakage currents and insulators failing [1-3].At the beginning,these inverters were created in order to reach high output voltage levels with standard low-voltage technology active components.It is possible to use this converter with low-voltage component not in order to increase the output voltage level but in order to increase the performance of the whole converter.Several multilevel converters exist,there are mainly three types of such converters.A good overview of these structures could be found in [4]
This paper focuses on Cascaded H-Bridge inverter (CHB) as shown on the Fig 1.

近年来,引入了多级变频器,用来驱动3相电机.这些变频器的输出电压几乎呈纯正弦曲线,能够降低常态电压,降低造成轴承泄漏的电流,减少绝缘体损坏.起初,设计变频器的目的只是为了利用低压元件和技术,提高输出电压水平.结果不单单提高了输出电压,而且提高了整个变频器的性能.目前多级变频器已经问世,变频器主要有三种形式.具体结构见………

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