To solve the problem that it is difficult to select the sliding coefficient

the sliding mode control theory was used toestablish the phase-variable model of the single-phase full-bridge inverter with sliding mode control. According to the constraint control principleand the sliding-mode's existence conditions themathematical relationship among the sliding domain

sliding coefficient and load resistance are derived. Then

the papermade ananalysis of the relationship between the sliding domain boundary and sliding coefficient

load resistance

load step amplitude

and put forward the basic principle of choosing the sliding coefficient. Based on the inverter load-step system trajectories

combined the sliding domain right boundary conditions with the inverter desired dynamic

the design method for the sliding mode controller with the hysteresis modulation is proposed. In the simulation experiment the sliding mode controller wasdesigned by this method

the results show that the design method is correct and effective. This method is simple and easy to operate

and is a good theoretical reference value and engineering value.