Abstract

A sliding mode controller is designed to effectively track the reference current for the characteristics of conventional grid-connected controllers that cannot perform static-free tracking. and aiming at the jitter phenomenon of sliding mode controller, a boundary layer-based sliding mode controller is designed, which adopts traditional linear control inside the boundary layer and sliding mode control outside the boundary layer. the error is limited to a certain range and a compensation term is used to improve the problem of slow control speed. The proposed strategy is validated by simulation using matlab simulation software, and the simulation results prove that the proposed strategy can achieve grid current and grid voltage in the same frequency and phase, which proves the effectiveness of the proposed strategy.

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