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

fYear

2008

fDate

21-24 April 2008

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICIT.2008.4608311

Filename

4608311