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This paper presents a novel modular multilevel DC/DC converter suitable for integrating the oif-shore wind farm with the HVDC transmission system. The proposed converter consists of a wind farm-side three-phase MMC inverter and a series-connected rectifier linked by a special decoupled medium frequency transformer. The transformer decouples the three-phase input voltage into three isolated single-phase...
An adaptive fuzzy robust controller is designed to improve the electrode control of three-phase electric arc furnace electrode regulator system. The design process of robust fuzzy control system is proposed in detail. The impacts of tracking error and approximation error to parameter adaptive law are considered. The approximate error and external disturbances compensate controls are adopted. The simulation...
This paper analyses the characteristics of the arc furnace electrode regulator system, and also a design of fuzzy-PID control system. In order to to improve the performances of the fuzzy controller, the genetic algorithm is introduced to optimize parameter of fuzzy-PID controller. The simulations show that satisfied control effects can be achieved using optimal parameter of fuzzy-PID based on genetic...
In this paper, the adaptive fuzzy sliding mode control is applied to electrode regulator systems of arc furnace, and the detailed design procedure of the fuzzy sliding mode control system is presented. The adaptive fuzzy control is utilized to approach the equivalent control of sliding mode control, then the adaptive law is derived. The discontinuous control, which guarantees the stability of control...
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