Electric energy quality regulator and control method
A technology of power quality and control method, applied in active power filtering, AC network to reduce harmonics/ripples, harmonic reduction devices, etc., can solve problems such as poor suppression effect, achieve suppression amplification, and avoid harmonics Oscillation, the effect of eliminating reflected waves
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[0036]Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0037] figure 1 Shown is the lumped parameter model diagram of the power quality conditioner used in the ring line in the present invention, the power quality conditioner extends the line length of the ring transmission line at the harmonic frequency equivalent to wireless length, corresponding to the dotted line part, but has no effect on the circuit structure at the fundamental frequency. In the figure, x represents the equivalent extension length of the loop transmission line at the harmonic frequency by the power quality conditioner, x=x 1 +x 2 And l 1 +x 1 = l 2 +x 2 , point c is the midpoint of the equivalent extended line. According to the transmission line theory, when the length of the transmission line is infinite, there is no reflected wave in the line, so the harmonic amplification on the line can be effectively suppressed.
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