A Closed Loop Control of Quadratic Boost Converter Using PID Controller

This paper presents an implementation of open loop and closed loop control of Quadratic boost converter using PID controller.  Quadratic boost converter consists of boost converter and fly back converter driven by a single switch. Quadratic boost converter QBC is designed especially for regulating the DC interface between various micro sources and dc-ac inverter to electricity grid. Quadratic boost converter,P,PI and PID  controller are modeled, compared and  evaluated by MATLAB simulations. It has been found that the transient and steady state performance is improved by using PID controller. This converter achieves high step-up voltage gain with appropriate duty ratio and low voltage stress on the power switch.   The simulated open loop and closed loop  performance is verified experimentally.