Energy Management Control and Experiment for DC Future Home Part 2 – System Level Control and Experiment

摘要

to enable zero net-energy consumption and optimalpower management for future homes or buildings, the dc electricdistribution systems (dc nano-grid) finds feasibility and simplicityfor integrating multi-type renewable energy sources, such assolar, wind and energy storage elements, such as lithium-ionbatteries. However, integrating all the sources and loads in asimple, reliable and smart way is still challenging. This paper triesto understand on the control objectives of every key sourcecomponent, and then proposes a distributed droop controlmethodology to integrate all the source converters. Controlfunctions in components level and system level will be defined anddiscussed, and energy storage management and its control law indc nano-rid is proposed. System level energy management controlstrategies in a day/24 hours are examined and discussed withconsiderations of residential load demand profile, local renewableenergy source profile and schedules of electricity rate. Keyscenarios of system level experiments are given for verificationpurposes.