Voltage regulation system based on ADRC for doubly salient electro-magnetic generator

A voltage regulation system based on linear active disturbance rejection control (LADRC) for doubly salient electro-magnetic generator (DSEG) was proposed in this paper. Based on mathematical model and operation principle of the generator, second-order LADRC controller was constructed to keep output dc voltage stable by adjusting exciting current and corresponding operation principle was analyzed in detail. Then, control parameters selection method has been given according to engineer design consideration. Finally, co-simulation models of voltage regulation system for DSEG using LADRC and traditional output voltage feedback plus exciting current feed-forward control were built by electromagnetic finite element analysis and transient solver of control circuit. The steady state and dynamic performance of the generator under different load show that DSEG using LADRC will acquire much better steady and dynamic response characteristic than one using traditional control.