Research on Higher-order Differential Feedback Control of Z-source Inverters
Taking aeronautic static inverters as the research object,the Z-source inverter is introduced to design aeronautic static inverter for its traditional two-stage structure with low efficiency and complex system and the waveform distortion caused by the dead zone effect.Aiming at the complex controller design due to the high order and non-minimum phase of Z-source inverter system,a feedback control strategy based on a high-order differentiator is introduced.The control strategy uses the higher-order differentiators to estimate the system state variables at each order,and it does not depend on an exact system model.The simulation experiments show that when used for Z-source inverter output voltage control,this feedback controller can effectively track the given output volt-age,and maintain a good steady-state and dynamic performance under external disturbances,meeting the aeronautic static inverter control requirements.
aeronautic static inverterZ-source inverterhigher order differentiatorstatus estimationfeedback control
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维普
