Invention Grant
US09294010B2 Method for controlling switching branch of three-level converter and switching branch for three-level converter 有权
用于三电平转换器的开关分支控制和三电平转换器开关分支的控制方法

Method for controlling switching branch of three-level converter and switching branch for three-level converter
Abstract:
Exemplary embodiments are directed to a method for controlling a switching branch of a three-level converter to enter a stop state. The switching branch including a first semiconductor switch and a second semiconductor switch, a first diode and a second diode, a third semiconductor switch and a fourth semiconductor switch, a third diode, and a fourth diode, a fifth semiconductor switch and a sixth semiconductor switch, a fifth diode, and a sixth diode, and a manner of controlling the semiconductor switches. When the switching branch is set to enter a stop state, current flowing in a main circuit of the switching branch is transferred in a controlled manner to diodes that conduct the current, when all the semiconductor switches of the main circuit of the converter are turned OFF.
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