Improved T-type three-level dual machine parallel VSG power sharing voltage balancing control 

Improved three-level dual machine parallel VSG power sharing voltage balancing control strategy
[2] Control description:
(1) Introducing the integral improvement method to eliminate the uneven distribution of active and reactive power caused by unequal line impedance in the reactive power loop
(2) Mid point potential balance: When VSG is applied to T-type three-level systems, there may be imbalanced input capacitance. Adding the mid point potential balance strategy mentioned in the literature can significantly improve the balance effect, and the simulation shows superior balance effect
(3) Quasi PR controller: Replacing traditional PI controller with PR controller can achieve good response speed when the system is loaded with impact loads, ensuring good dynamic stability of the system
email：modeling199308@gmail.com