Aiming at the problem that the design process for the single-phase full-bridge low frequency inverter is lack of specification

this paper presents a formulation process decoupling method for designing the main circuit filter parameters and the controller parameters in the condition of desired dynamic transients.Based on the resistive load step

the optimal load transient response processes for the single-phase full-bridge low frequency inverter were analyzed in two extreme cases

this paper derived the mathematical formula of the optimal load transient characteristics about filter parameters

and gives an applicable scope of the formula-output voltage undershoot below 10%

and then based on the desired dynamic transients of inverter

a design method of filter parameter is proposed

and take the example of sliding mode control

the design method of sliding mode controller is given.The simulation experiment results show that the optimal load transient response process is existent

and verify the correctness and effectiveness of optimal load transient characteristic expression and the decoupling design method.This decoupling design method has good theoretical and engineering value.