High-capacity inverter power supply control parameter optimization method based on multiple sampling

The invention relates to the technical field of electric energy conversion of power electronics, and discloses a large-capacity inverter power supply control parameter optimization method based on multiple sampling, which comprises the following steps: establishing a non-delay state space small-signal mathematical model, solving an initial value of a control parameter, and calculating the initial value of the control parameter; establishing a multi-sampling-based inverter power supply closed-loop state space averaging model containing digital control delay, selecting the lowest sampling frequency meeting the selection condition according to the dynamic characteristic index and the calculation load rate of a digital controller, and using a characteristic value analysis method to analyze the optimal sampling frequency; and judging the stability of the inverter power supply closed-loop state space averaging model based on multiple sampling, determining an optimization target, a constraint condition and a value r