Power grid simulator having accurate harmonic voltage and virtual impedance control
A technology of virtual impedance control and power grid simulator, which is applied to electrical components, output power conversion devices, and AC power input to AC power output. Guarantee the simulation accuracy and other issues, and achieve the effect of satisfying the test and research of distributed power generation, and the design of each controller and function is simple
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[0046] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.
[0047] The present invention provides a grid simulator with accurate harmonic voltage and virtual impedance control, which can accurately simulate grid harmonic voltage and virtual impedance. As a test device for distributed power generation grid-connected converters, the grid simulator can not only It can simulate standard grid output voltage, grid voltage fault conditions and grid harmonic content, and can also simulate grid impedance changes, which can better meet the needs of distributed generation...
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