SiC intelligent multi module DC/DC converter system for space applications

Power electronic converters are essential in every mission vehicle, with use in critical systems ranging from electric power management applications, to power distribution, to on-board servo motor/actuator drivers. Power converter systems are restricted by their maximum operating voltage and current (and hence power) levels at both their inputs and outputs. Scalability to a higher voltage, current or power level means a complete redesign of the power converter system - an expensive, time consuming process. Increasing power density and efficiency, reducing size and weight, and introducing standardization of electronics systems are all goals of the aerospace industry. The modular converter concept is an ideal solution to diminish time and expenses associated with the implementation of typical converters. However, true modular operation of DC/DC converters presents a set of inherent power sharing problems derived from their intrinsic topology behavior and closed loop control characteristic. An advanced silicon carbide (SiC) based intelligent multi module DC/DC converter system has been designed, built, and tested.