A medium-voltage cs-apf fault-tolerant control method based on selective current limiting
A CS-APF, fault-tolerant control technology, applied in the field of medium-voltage CS-APF fault-tolerant control based on selective current limiting, can solve problems such as poor dynamic performance and long adjustment time, achieve broad market space, low hardware cost, and solve The effect of insufficient capacity
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[0048] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0049] The topology of the main circuit of the medium voltage CS-APF involved in this embodiment is as follows: figure 1 As shown, because APF requires high dynamic response speed and switching frequency, IGBT is selected as the switching device, and the rated voltage is 1700V. The order N of series connection of each phase needs to be determined according to the application. Taking the 10KV distribution network as an example, with a safety margin of 2 times, the appropriate voltage of each cascade unit is 800-1000V. The order N of cascade units connected in series for each phase is approximately 10 or so, the corresponding order of other medium-voltage power grids can be...
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