Title :
Analysis, design and control of bidirectional charger/discharger
Author :
Veerachary, M. ; Gowra, R.N.
Author_Institution :
Dept. of Electr. Eng., IIT Delhi, New Delhi, India
Abstract :
A 3rd order bidirectional converter for charger/discharger applications is proposed and then robust controller is designed. The advantages and limitations of the proposed converter are discussed. Through state-space analysis small-signal discrete-time transfer functions are established. Discrete-time modeling and the expressions for small-signal transfer functions of the converter are derived. Based on the discrete-time models controllers for both the modes are designed. Then the robustness of the designed controllers is verified and necessary and sufficient conditions on nominal performance, robust stability and the robust performance conditions are obtained. The robustness of the designed controllers is validated via robust control tool box in matlab and μ-synthesis. Robustness of the designed controllers is also verified through time-domain PSIM simulations and then validated with experimental results.
Keywords :
control system synthesis; discrete time systems; power convertors; robust control; state-space methods; time-domain analysis; transfer functions; μ-synthesis; 3rd order bidirectional converter; MATLAB; bidirectional charger-discharger control; robust control tool box; robust performance conditions; robust stability; small-signal discrete-time transfer functions; state-space analysis; time-domain PSIM simulations; Batteries; Mathematical model; Robust stability; Robustness; Transfer functions; Uncertainty; Voltage control;
Conference_Titel :
Power India Conference, 2012 IEEE Fifth
Conference_Location :
Murthal
Print_ISBN :
978-1-4673-0763-5
DOI :
10.1109/PowerI.2012.6479563
