Mathematical Problems in Engineering / 2014 / Article / Fig 10

Research Article

The Virtual Resistance Control Strategy for HVRT of Doubly Fed Induction Wind Generators Based on Particle Swarm Optimization

Figure 10

Rotor current, voltage with variable damping control in synchronization.
(a) Rotor current and voltage with 0.5 pu virtual resistance
(b) Rotor current and voltage with 1.5 pu virtual resistance