Novel multifunctional power electronic current-limiting system and control method thereof
A power electronic, multi-functional technology, applied in the field of electric power, can solve the problems of large reactive and active energy, resource loss, inability to compensate for power quality problems, etc., to shorten the time of short-circuit current, improve power supply reliability, and compensate voltage The effect of fluctuations
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[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0030] figure 1 It is the topology of the new multifunctional power electronic current limiting system proposed by the present invention. It is mainly composed of three parts: PWM voltage stabilizing module 1, three single-phase DVR module 2, thyristor branch 3. PWM voltage stabilizing module 1 through parallel transformer T b Incorporated into the 10kV power grid, the three single-phase DVR module 2 realizes energy supply by sharing the DC side of the PWM voltage regulator module 1. A thyristor branch 3 is set up between the output points of each inverter unit of the three single-phase DVR module 2 and the output filt...
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