SVG is a static var compensator, which is a representative product of technical application in the field of reactive power compensation. TDSVG is connected in parallel with the power grid, which is equivalent to a variable reactive current source. By adjusting the amplitude and phase of the output voltage on the AC side of the inverter, or directly controlling the amplitude and phase of its AC current measurement, it can quickly absorb or emit all The required reactive power can achieve the purpose of fast and dynamic adjustment of reactive power.