Differential flat control of tri-state Boost converter
A strategy based on dynamic reference current and the differential flat system control is pro-posed to address the problem of the slow transient response of boost converters in pseudo-continuous conduction mode under the action of traditional controllers.Firstly,the mathematical model of the tri-state boost converter is established using the state space averaging method;Then,the state variables and input control variables are selected to determine whether the system meets the conditions of the differential flat system method;Finally,a control system based on dynamic reference current and the differential flat system control method has been es-tablished,with the current loop using dynamic reference current method and the voltage loop using the differ-ential flat system control based on expected feedforward input control and error feedback.The simulation re-sults show that when the interference occurs,the differential flat system control has better anti-interference ability and thus improves the robustness of the system,as compared with traditional PI controllers.
tri-state boost converterdifferential flatnessdynamic reference current controltransient response
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维普
