Compound control method for compensating unbalanced harmonics
A composite control and harmonic technology, which is applied in reactive power compensation, harmonic reduction devices, and AC networks to reduce harmonics/ripples, etc. It can solve problems such as complex calculation and increased computational burden.
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[0033] The technical solutions in the present invention are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] Such as figure 1 A schematic diagram of the structure of the APF with two bridge arms connected to the power grid is shown. The APF with two bridge arms is connected to the power grid, and the loads include harmonic loads and unbalanced loads. When the APF of the two bridge arms is not working, the grid-side current provides the unbalanced harmonic current required by the load, so the grid-side current is also an unbalanced harmonic current. When the two-arm APF works...
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