A new power electronic converter control approach to power system damping in distributed generation grids

This paper addresses improvements in damping of distributed generation systems made possible by using the real and reactive power capacity of power electronic converters interfaced to the distribution grid. A new control approach is presented in which a grid connected synchronous generator is torque-controlled by a power converter, which may be remote from the generator. A reduced model is used to develop the control method, which is termed compensated generator control. Excellent performance of post-fault damping is illustrated through simulation, and it is shown that the method provides a significant increase in damping performance when compared to other methods.