Mathematical Problems in Engineering / 2014 / Article / Fig 12

Research Article

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

Figure 12

Rotor current and voltage with variable damping coefficient in subsynchronization.
350367.fig.0012a
(a) Rotor current and voltage with 0.5 pu virtual resistance
350367.fig.0012b
(b) Rotor current and voltage with 1.5 pu virtual resistance