SBIR/STTR Award attributes
nbsp;The current trend in power electronics is to create a module solution to achieve higher densities and functionality. The advanced current and future NASA missions need more ldquo;plug and playrdquo; solutions, therefore the concept of combining power electronics modules to create a compact multi-input and multi-output power ldquo;boxrdquo; is becoming the norm in advancing the state-of-the-art. Hence, the goal of this project is to develop multi-port and multi-direction power modules, which are modular / interchangeable and highly efficient, resulting in design flexibility, improved control, as well as weight and volume savings. The project outcomes are also expected to give rise to expanded mission range, expanded operational envelope, and increased prime power for instrumentation and propulsion.nbsp;The goal is to advance the development of a modular triple active bridge (TAB) DC-DC power conversion interface as part of DC distribution systems or local DC microgrids in international space stations or spacecrafts. Of particular interest is the development of a versatile power module for use in lunar and planetary surface power management and distribution systems.nbsp;We are targeting to achieve (a) a low weight and thermally efficient compact design, yielding to a gravimetric power density of 6.6nbsp;kW/kg and specific power density of 9.15nbsp;kW/L, using an efficient design and a high-frequency PCB-wound planar transformer. The proposed novel control and modulation technique is likely to facilitate (a) minimization of conduction and switching losses, (b) loop decoupling to enable simultaneous regulated power flow toward both the output ports, (c) bidirectional power flow enabling both DC bus-to-battery charging and battery-to-other DC loads discharging capabilities, and (d) a high rated load efficiency at full load, and a much higher efficiency compared to conventional TAB converters in light load and non-unity voltage gain operation.nbsp;
