Conveners
M1OrE - Focused Symposia - Propulsion IV: Power Electronics, Energy
- David Cardwell (University of Cambridge)
- Eric Hellstrom (ASC / NHMFL / FSU)
We describe the general design and development progress of a cryogenically cooled 1-MW inverter. The goal is to achieve an efficiency of 99.3% at 500-kW power and a specific power of 26 kW/kg. The design must be compatible and scalable with cooling by both liquid hydrogen and liquid natural gas, but the experimental prototype will be cooled by liquid nitrogen. The input dc voltage is 1000 V,...
Cryogenic Power Electronics, or CryoPower, has been proposed as an innovation for over two decades as a means of integrating power electronics and superconducting devices, particularly magnets, motors, and generators at cryogenic temperatures close to the operational temperature of superconductors. In these systems, power electronics specifically designed to operate in the cryogenic...
GaN-based field-effect transistors have shown great potential in the development of high-density power converters and also hold promise for cryogenic applications. In order to explore this potential, the cryogenic performance of an EPC gallium-nitride (GaN) power field-effect transistors (FETs) has been evaluated. At -195 C, an 85 % reduction in on-state resistance, and a 16 % increase in...
Next generation electric power systems on Navy ships require higher capacity, efficiency, and stability to meet the demands of increasingly complicated grid systems. High-temperature superconducting (HTS) Conductor on Round Core (CORC®) power transmission cables provide unique solutions by offering high operating currents and current densities in a very small cable cross-section. Advanced...
As desired for a sustainable economy, efficient renewable energy generation, conversion, distribution, and storage technologies are indispensable to meet society’s increased need in energy utilization. Propulsion is one of the major functions the modern society needs, and electric-propulsion, rather than internal combustion based propulsion, will be a key player to help reach the goal of...
Electrical energy storage devices are critical components of electric power systems of every aerospace vehicle. They are needed for many functions, such as to provide high-power for pulsed loads, as an electrical accumulator unit (EAU) to handle transient loads both on/off the buses, for emergency power during generator or hydraulic-system failure, and as a high-capacity energy source for...
