在此基础上，研究了多电平逆变器的各种PWM控制方法，并对三电平逆变器的载波pwm方法进行了详细介绍。
Based on this, the thesis also researches PWM control methods of multi-level inverter and introduces the carrier PWM method of three-level inverter in detail.
并以三电平逆变器为例，推导了三角载波调制法和空间矢量法的本质联系。
And to three-level inverter as an example, the nature contact of the triangular-carrier modulation method and space vector method is derived.
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