Characteristic model-based adaptive control of Z-source inverter

Taking the aeronautic static inverter as the research object, the Z-source inverter is introduced to design the aeronautic static inverter, which solves the low efficiency and complex system of the traditional two-stage inverter structure and the distortion caused by the dead zone effect. A characteristic model-based adaptive control strategy is proposed for the problem of complex controller design due to the high order and non-minimum phase of the Z-source inverter. By sampling the input and output characteristics of the Z-source inverter, the characteristic model is constructed so that is has equivalent but not approximate input and output characteristics with the Z-source inverter. Designing the controller based on the characteristic model of the Z-source inverter makes the controller simple and easy for engineering implementation. The simulation results show that the characteristic model-based adaptive control strategy for Z-source inverter output voltage control can effectively track the given output voltage and maintain good static and dynamic performance when the system is subject to external disturbances, meeting the static converter control requirements.