The Power Converter Of Energy Shaping Control Study

Applying a novel energy-shaping theory of port-controlled Hamiltonian damping (PCHD) systems,the modeling and feedback controlling of both Buck-Boost converter and three-phase voltage-source AC-DC converter are presented.Also,in the computer flat MATLAB/SIMULINK,the simulation of Hamiltonian control systems is established and researched.Through the simulation results it is known that the controllers of the systems designed are fine enough.Primarily,we review the development of control strategies for power converter.The analysis is made in three aspects,the general control strategies,the present control strategies,and the new type control strategies.Furthermore,the energy shaping control methods of Euler-Lagrange(EL) and PCHD systems are introduced in this paper.Also the precise definitions of input-output stability,passivity,dissipation,energy-shaping and energy-balancing equations are introduced.Consequently,controller designing theory and feedback stabilization theory are given.On the other hand,some important properties of the PCHD systems are analyzed,and from an energy-balancing view,the PCHD mathematics models of Buck-Boost converter and three-phase voltage-source AC-DC converter are established.In order to solve the problem,the PCHD system's state space averaging(SSA) models of the both two power converters are analyzed and given out respectively based on mathematics models.What's more,the controller designing of the both two power converters is given base on the PCHD system's SSA models through the energy-shaping technique.Additionally, we add an integral control action to Buck-Boost converter system,and giving out the new models and controllers again.Using MATLAB/SIMULINK computer software,the simulation of Hamiltonian feedback control systems is established and researched.The simulation results show that the both system controllers which are designed based on PCHD system energy-shaping theory have a strong robustness to the variable resistance load and variable parameters,and also the controller are fine enough.The last but not lest,the conclusion of the research work in this dissertation is made and the future research direction is given out also.