Passivity-based Controller Design of Electric Dehydrator

摘要

Electric dehydrator plays an important role in oil and chemical industrial production. Control law design method for electric dehydrator is introduced in this paper. A new mathematical model of the power circuit of electric dehydrator is developed. DC side voltage control and unity power factor control based on the passivity-based control technique in the electric dehydrator are investigated in details. Electric dehydrator controlled by the proposed passivity-based control strategy has many advantages, such as, enhancing robustness under model uncertainties, decoupling current-loop dynamics, guaranteeing zero steady-state error and asymptotic rejection of dynamic load disturbance. The results of 60KW prototype electric dehydrator simulation with MATLAB/ SIMULINK show that the passivity-based control strategy is feasible.