Amorphous Metal Ribbon (AMR) and Metal Amorphous Nanocomposite (MANC) Materials Enabled High Power Density Vehicle Motor Applications
- Carnegie Mellon Univ., Pittsburgh, PA (United States); Carnegie Mellon University, Pittsburgh, PA
- National Energy Technology Lab. (NETL), Pittsburgh, PA (United States)
- North Carolina State Univ., Raleigh, NC (United States)
- Metglas
Metal alloys with a frozen liquid (glassy) structure led to products called amorphous magnetic ribbons (AMRs) produced by planar flow casting. In the late 1980’s post-casting nanocrystallization steps were developed to produce magnetic metal amorphous nanocomposites (MANCs) with magnetic nanocrystals embedded in an amorphous magnetic matrix. Nanocrystals provide high magnetic inductions; and an exchange coupled amorphous phase provides high electrical resistivity. Applications of AMRs and MANCs in high speed motors, HSMs require low power losses at high-f to control T-rise. Power losses, are partitioned into losses with different f-dependences, including: (i) hysteretic, (ii) classical eddy current, and (iii) excess loss components. Hysteresis loss dominate at low- and eddy currents at high-f. I will describe a dual stator axial, Flux Switching with Permanent Magnet (FSWPM), motor built in a DOE AMO program. This 2.5 kW motor supports ~0.5 kW/kg specific power density proposed to be increased to >1.6 kW/kg in a 2nd generation HSM. A motor test bed, operational at NCSU, has a 3-phase converter for drive current consists of a DC link capacitor and 6-pack SiC MOSFET modules. At 1200 V and 30 A maximum rating, the module can drive an our FSWPM HSMs. Materials developments for achieving higher power densities will be described.
- Research Organization:
- Carnegie Mellon University, Pittsburgh, PA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EE0008870
- OSTI ID:
- 1591633
- Report Number(s):
- DOE-CMU-08870-1
- Country of Publication:
- United States
- Language:
- English
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