Active power filter (APF) device based on double vehicle stability control (VSC) interactive parallelly-connected harmonic compensation open loop and closed loop combination
A harmonic compensation, open-closed-loop technology, applied in the field of multi-machine fractional APF devices, can solve the problems of harmonic compensable frequency band reduction, compensation effect deterioration, heat generation, etc., to achieve total output ripple minimization, dynamic performance optimized effect
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[0025] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.
[0026] The structure of the whole system of the present invention is as follows: figure 1 shown. The whole machine is connected in parallel, and the parallel unit adopts a double-VSC interactive parallel structure, that is, the double-VSC DC side shares a capacitor, and the two ends of the AC side are respectively connected to the power grid by series and parallel inductors and common-mode inductors; the double-terminal outputs of each parallel unit are respectively The...
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