A Single Board Buck and Boost Bidirectional DC-DC Converter for DC House Energy Management System
This paper entails the design, construction, and testing of a single board buck and boost bidirectional DC-DC converter to reduce components and improve efficiency. The approach aims to replace the previously designed converter which made use of a separate buck converter and boost converter boards. The bidirectional converter will eventually reside in the Energy Management System (EMS) of the DC House system. This new converter also makes use of the temperature sensing capabilities of the state of charge sensor selected in the previous design to allow for a better understanding of the system’s operation. Additionally, the sensor and all passive components were incorporated into a printed circuit board to create a more reproducible product. Analysis of the bidirectional DC DC converter shows high efficiency especially at larger load currents. Testing of the system demonstrated its ability to successfully direct power between the 48V DC bus and load and the 12V battery.