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Shuaibing Chang

Abstract

Actuator dead-zone is common in industrial control. However, while designing linear controllers, the actuator dynamics are usually assumed to be linear. Therefore, the dynamic performance degrades when there is governor dead-zone. In this paper, design and analysis of load frequency control for power systems with governor dead-zone via linear active disturbance rejection control (LADRC) is presented. In order to improve the performance of LADRC with governor dead-zone, two schemes are proposed to overcome the dead-zone nonlinearity, where the nonlinearity is estimated via the extended state observer (ESO) and rejected quickly in LADRC. Simulation results show that the proposed two schemes can achieve good control performance for power systems with governor dead-zone

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