Decoupler-Based Feedback Control Strategy for Interlinking Converter in a Hybrid Microgrid

In a hybrid microgrid with AC and DC subgrids, the interlinking converter (IC) is key element connecting two subgrids. The performance of adversely affected by d- q-axis impedance interaction between inner control loops. This highly undesirable since it affects both dynamic steady-state IC. Based on this, novel feedback-based decoupling strategy developed to overcome cross-coupling effect in mathematical model converter. concept feed-forward compensation techniques are utilized address prior related works, which has an inherent disadvantage additional disturbance due addition compensating terms. this study, complete d q axes was achieved, first-order transfer functions were obtained for loops using systematic block-reduction algebra direct synthesis approaches. With model, computational complexities reduced free from effects, thereby achieving enhanced transient stability. Perfect voltage vectors achieved matrix diagonalization method. Furthermore, novelty proposed that decoupled integrated normalization-based coordinate effective bidirectional power via Additionally, controller’s validity tested its under different transients MATLAB Simulink platform. simulation results validated showing faster response ensured. A high-quality reference signal generated achieved. observation also comparing T.H.D. levels model’s one without strategy.