12 TRACTION MOTORS
Traction motors are used to propel locomotives and
other heavy-duty electric vehicles. These powerful
industrial motors require special protection due to their
conditions of use.
These typically include frequent variations in load
conditions, high rates of acceleration and deceleration,
high-torque low-speed hill climbing, and low-torque
high-speed sustained cruising. Thus traction motors
operate within a wide range of speeds, unlike standard
industrial motors, which are generally optimized for
their rated speed.
To minimize weight, traction motors must be compact
in design, while to move heavy loads they need to be
able to operate for extended periods at extreme
temperatures, under elevated electrical stress, and in
harsh environments.
Traction Motors