Title :
Discrete LQ-control of a buck converter
Author :
Geerligs, J.A.J.M. ; van Rhee, G.
Author_Institution :
Holec Ridderkerk, Netherlands
Abstract :
This paper deals with the control of a buck power converter. The 120 kW converter is fed by a varying 1500 V DC power supply. Digital voltage as well as current control is discussed. A discrete linearized state space model is derived. A controller structure is chosen and the linearized model is extended with the controller states. For this extended model, an optimal output feedback gain is computed by means of an LQ algorithm. Digital simulation results are computed with full scale test bench measurements
Keywords :
control system analysis; digital control; discrete systems; electric current control; feedback; optimal control; power convertors; state-space methods; voltage control; 120 kW; 1500 V; DC power supply; LQ algorithm; buck power converter; control system analysis; current control; digital control; discrete linearized state space model; feedback gain; linearized model; optimal control; voltage control;
Conference_Titel :
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location :
Brighton
