For overcoming the difficulty of mathematical modeling and the complexity of parameters tuning of IGBT-based quick charging inverter for mine use

simulink-based elements simulation technology was employed to establish a nonlinear closed-loop model of PWM controlling.Dynamic responses were simulated under different conditions

such as constant load

periodic load

aperiodic load

and sudden load change.The results showed that this model could rightly demonstrate the relations between the inverter's parameters and the system's output

and it provided an effective analysis tool for optimization design of electric parameters

intelligent control strategy design and verification.