Distributed power quality enhancement using residential power routers

To address power quality issues in the residential split-phase distribution systems, a novel residential power router (RPR) is proposed in this paper. It consists of a dual-half bridge (DHB) converter and a split-phase inverter. The DHB provides the galvanic isolation and bidirectional power flow channel for the distributed generation terminal. The split-phase inverter can work as the active power filter, the reactive power compensator, and balance the power of two phases. The power balancing mode is critical to a residential microgrid, especially when the utility grid is not accessible. A proportional quasi-resonance and resonance (PQRR) controller is adopted to eliminate the steady-state error for harmonics compensation. Simulation and experimental results are presented in this paper to validate the feasibility and effectiveness of the proposed RPR for residential applications.

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