Indirect Power Control of a Cascaded Brushless Doubly-Fed Induction Generator Operating with Unbalanced Power Grid.

This paper describes indirect main stator power control. Presented in paper algorithm provide possibility of electromagnetic torque oscillations limitation with full or partial active power component oscillation reduction for brushless doubly fed induction generator during operation with unbalanced grid. Presented in paper algorithm bases on cascaded brushless doubly fed induction machine equivalent model and does not require superior power and negative sequence regulators. The algorithm has been tested in the simulation with multi-MW machine model.