A Nonisolated Multiple-Input Multiple-Output DC-DC Converter for DC Distribution of Future Energy Efficient Homes

Combination of renewable energy sources with utility grid and/or energy storage systems can deliver continuous power to the loads. Since many energy sources and loads use dc, it is envisioned that future smart homes may have dc distribution systems in order to interconnect various energy sources, storage, and loads with fewer converter stages and higher energy efficiency. In such applications, the system may have multiple sources and load voltage levels. The use of multiple-input multiple-output converters (MIMOCs) can simplify the conversion structure, reduce the design component, and lower the manufacturing cost. This paper introduces a nonisolated MIMOC, which can simultaneously draw power from different energy sources and provide multiple supply voltages. A specific switching scheme is proposed, and a multivariable control is presented to enable power budgeting between diverse sources and loads in addition to regulating all output voltages.