Double Integral Sliding Mode Control for Single-Stage Active FIBC-PFC in Smart Grid Applications

Abstract

This work addresses a single-stage active power factor correction (PFC) scheme that is implemented using a Floating Interleaved Boost Converter (FIBC) equipped with an indirect Double Integral Sliding Mode Controller (DISMC) adopted for a single phase full bridge rectifier. Due to the high gain, high efficiency and small size components, FIBC-based approach can achieve unit power factor and voltage-regulation within a single-stage configuration in addition to optimize the system configuration. An indirect DISMC scheme is proposed to reduce the steady-state error and chattering while achieving fast transient and reasonable stability. The proposed controller can effectively improve the tracking performance of the line current. Simulations have been done by MATLAB indicate that, the proposed approach drives the output voltage to the desired DC level in the presence of external disturbances and internal parameter uncertainties, while providing close to unity power factor.