MMC sub-module with direct-current short-circuit fault self-removing function
A DC short-circuit and self-clearing technology, which is applied in the conversion devices and instruments that convert DC power input into DC power output and output power, can solve the problems of reducing the number of switches and increasing the number of devices, and achieves a reduction in the number of switches. , the effect of low loss
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[0015] In order to further illustrate the content and characteristics of the present invention, the specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, but the implementation of the present invention is not limited thereto. If there are control processes that are not specifically described in detail below, those skilled in the art can refer to the prior art to realize.
[0016] refer to Figure 4 , a kind of MMC sub-module with DC short-circuit fault self-clearing capability of the present invention consists of a first switching tube T 1 , the second switching tube T 2 , the third switching tube T 3 , the fourth switching tube T 4 , the fifth switching tube T 5 , diode D, first capacitor C 1 and a second capacitor C 2 constitute; the switch tube is an IGBT; the port voltage of the MMC sub-module is u SM , the input current of the MMC sub-module is i SM ; the first capacitance C 1 The voltage is U C1 ...
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