Bounded Hamiltonian Control of dual-excited synchronous generators

In this paper, the dual-excited and steam-valving controller is proposed for the dual-excited synchronous generator by using bounded passivity-based design method, which can make the closed-loop system asymptotically stable under the arbitrarily bounded control. So the compromise can be gotten between the control effect and the energy magnitude of control input. Firstly, the Hamiltonian energy function is constructed according to the system model. Then, the model of synchronous generator is transformed into the port-controlled Hamiltonian (PCH) system. Next, the port-controlled Hamiltonian system with dissipation (PCH-D) is obtained by pre-feedback control. Finally, the unbounded and bounded passivity-based controllers are designed based on passivity theorems. In order to illustrate the effectiveness of the bounded passivity-based control, we compare three design results: coordinated passivation control, unbound passivity-based control and bounded passivity-based control. The simulations show that the bounded passivity-based control can obtain the best control result among them.