Research firm Adamas Intel-
ligence has reported that 93
percent of all passenger EVs
sold in 2018 used permanent
magnet (PM) traction motors,
an increase of 1 percent from
2017.
PM traction motors use neo-
dymium iron boron (NdFeB)
permanent magnets in the rotor,
which spin the rotor in response
to a rotating magnet field pro-
duced in the stator. According
to Adamas, PM traction motors
can provide up to 15 percent
more efficiency than induction
motors, and are the most pow-
er-dense type of traction motor
available.
“Looking ahead, we expect
demand for PM traction mo-
tors, and the rare earth mag-
nets they contain, to continue
on a path of explosive growth
as EV demand soars and the
sales-weighted average motor
power (kW) per EV continues
to rise,” stated Adamas.93 percent of
EVs sold in 2018
used permanent
magnet traction
motors
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