Double-integral sliding mode control of the switched-inductor quasi-Z source boost converter

Compared with the traditional converter, switching inductance quasi-Z source DC-DC boost converter has characteristics of wide output voltage, small capacitor size and more reliable circuit. However, in process DC voltage boost, system is prone to high startup impulse fluctuation, other problems. Therefore, a double integral sliding mode control (DISMC) method proposed. The takes capacitance error, current error their sum single as state variables, derives equivalent law from surface. A Lyapunov function constructed analyze existence conditions DISMC method. And effects abrupt changes input negative reference load power on transient oscillation, steady overshoot are analyzed. This solves non-minimum phase problem so improve start-up performance controller speed up response system. Finally, superiority effectiveness verified by simulation.