Title :
The modeling and control of Buck-Boost converter based on energy-shaping theory
Author :
Wang, Yong ; Yu, Haisheng ; Yu, Jinpeng
Author_Institution :
Coll. of Autom. Eng., Qingdao Univ., Qingdao
Abstract :
The model and PWM controller of Buck-Boost converter are presented based on a novel energy-shaping theory. Firstly, a port-controlled Hamiltonian (PCH) model of Buck-Boost converter and its suitable state space averaging (SSA) model are established. Secondly, using the energy-shaping theory of interconnection and damping assignment passivity-based control (IDA-PBC) techniques, the feedback control theory of Buck-Boost converter is given. Then the desired equilibrium point of the system is obtained, and the stability of equilibrium point is analyzed. Finally the feedback controller is developed using energy-shaping theory for the SSA model of the PCH system. Furthermore, an integrator is added around the passive output preserving stability to avoid steady state errors induced by the presence of noise and modeling errors. Simulation results for the full system confirm the correctness and efficiency of the obtained controller.
Keywords :
PWM power convertors; power system control; state-space methods; PWM controller; buck boost converter; energy-shaping theory; feedback control theory; feedback controller; passivity-based control techniques; port-controlled Hamiltonian model; state space averaging; Adaptive control; Damping; Feedback control; Pulse width modulation; Pulse width modulation converters; Stability analysis; State-space methods; Steady-state;
Conference_Titel :
Industrial Technology, 2008. ICIT 2008. IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-1705-6
Electronic_ISBN :
978-1-4244-1706-3
DOI :
10.1109/ICIT.2008.4608311