All-superconducting rotating machines, utilizing superconductors for both field windings and armature windings, are a promising candidate for future all-electric aircraft, due to their high-power density and low weight. However, very high AC loss can be generated in the armature windings because they carry AC current under AC magnetic fields. The resulting total AC loss consists of...
The increasing demand for high-power density motors in electric transport industries opens a new research opportunity to develop motor topologies with less weight and high efficiency. In particular, all-electric aircraft applications require very high-power density motors. This study designed a new 1 MW 20pole/15slot double rotor Flux Switching Machine with high-temperature superconducting...
Our team is developing and demonstrating a 1 MW plus high power density motor intended for electric aircraft propulsion as part of an ARPA-E program. The target power density is > 16 kW/kg with 97+% efficiency. The motor is an asynchronous design with an outrunner rotor configuration, based on previous developments at OSU CAR. However, the stator and rotor windings are cryogenically cooled...
This talk will discuss the work on power density and efficiency potential for single and double aisle electric aircraft motors, generators and cables by Hyper Tech and Ohio State University. There are a few options on motors: ambient temperature, cryo (77-120K), and cryo 20-30K. Ambient temperature and cryo (77-120K) motors use aluminum conductors while cryo (20-30K) uses superconductors or...
Superconducting electrical machines are emerging as transformative technologies for electric propulsion, with several ongoing efforts focused on advancing their development. This paper highlights significant progress in developing a superconducting electric machine with a cryogenically cooled stator under the Center for High-Efficiency Electrical Technologies for Aircraft (CHEETA) project. An...
In the United States, the transportation sector was the largest contributor to CO2 emissions, responsible for ~28% of the total in 2022, whereas the residential sector accounted for around 13%. While batteries are making significant progress in reducing emissions in the transportation and residential sectors, commercial aircraft remain a mode of transportation where electrification poses...
