We want to develop a highly integrated electric propulsions system to be customized based on the specific requirements of the customer. We are currently working on the core of the system, which is made up of a battery, a supercapacitor module, a multilevel converter and a permanent-magnet synchronous machine. The storage units are directly coupled through a multilevel converter, without any additional DC/DC converter. Both hardware and software integrations ensure high performance and features such as optimal power flow management capability, high power and energy density, high efficiency, long battery lifetime.