Pav series four-quadrant simulation power amplifier based on linear power amplifier technology and integrated advanced technical performance and rich functions. It is vastly used by the institutes in the area of power, new energy, aerospace, rail transport, mining, petrochemical etc. It is also the ideal r&d device of wind power, pv, electric car, large power charging device, aerospace power system, marine power system, distribute energy, micro grid etc. It can directly connect to the popular simulation platform.