High-voltage direct-hanging type scalable vector graphics (SVG) comprehensive control device and comprehensive control method

The invention discloses a high-voltage direct-hanging type scalable vector graphics (SVG) comprehensive control device and an SVG comprehensive control method. The comprehensive control device is connected with an electric network. Each phase of the high-voltage direct-hanging type SVG comprehensive control device comprises an inductor-capacitor (LC) filter branch, a connection reactor and an H-bridge unit serial branch, wherein the H-bridge unit serial branch is connected in series with the connection reactor and then connected in parallel with the LC filter branch; the LC filter branch comprises an inductor and a capacitor; the H-bridge unit serial branch comprises N H-bridge units which are connected in series; N is more than or equal to 2; and each H-bridge unit comprises a bridge circuit which consists of four power elements. The comprehensive control method comprises a step of comprehensive control; and the step of comprehensive control further comprises a detection step, in which a detection method based on a plurality of synchronous rotational coordinates is adopted so as to carry out comprehensive control on a reactive current, a negative-sequence current and a harmonic current. The technical scheme of the invention has the advantages of simple structure, high response speed, good waveform of an output voltage, flexible control, convenience for modular manufacturing, and the like.