Self-synchronizing voltage source split-phase compensation method based on three-phase six-axis coordinate system

The invention discloses a self-synchronizing voltage source split-phase compensation method based on a three-phase six-axis coordinate system, and belongs to the field of power control. The control method comprises the following steps: operating in a self-synchronization control mode under a steady-state operation condition, and considering the performance of current while having the capability of actively supporting the power grid voltage and the power grid frequency; when the power grid is unbalanced and drops, a self-synchronizing voltage source split-phase compensation mode is switched, reactive compensation is provided for the system, and good low-voltage ride-through capability is achieved; wherein the established three-phase six-axis coordinate system can distinguish active power from reactive power and realize split-phase independent compensation control, so that error compensation on a non-falling phase during compensation of a falling phase can be avoided, meanwhile, the compensation amplitude is pr