The traditional current source converter needs to set an AC capacitor to achieve continuous current and energy buffering in its AC side. However

the AC capacitor is expensive and there is the risk of resonance with the inductor in AC side

seriously restricting the development of high-power. Thereby

from the point of view of engineering realization

using the idea of AC/DC conversion of DC current reinjection conversion to construct a high power SVG topology based on distributed-current-inductance can achieve the conversion of constant DC current ? approximate sinusoidal AC current. Moreover

the working principle of the topology circuit is analyzed and the trigger timing of the switch is given. The nonlinear mathematical model of the system is established

and an active and reactive power control strategy based on global linearization method is proposed. The feasibility of the topology circuit and the correctness of the control strategy are verified by simulations and experiments. The results show that the proposed topological input and output performance is excellent

and can output three-phase AC approximate sinusoidal current without filtering. The global linearization method does not depend on the SVG system operating state

and the validity of the controller is guaranteed in the global scope

thus the SVG system obtains excellent linear controlling performance in the global scope.