IEEE Electrification Magazine - June 2014 - 25

By Youlong Wang, Wen Xuhui,
Chen Chen, Li Yong, and Longya Xu

sy
rte
cou
ow
arr

he capabilities of peak power
and continuous power are the main
concerns for electrified vehicles. to
achieve good acceleration on uphill
climbing, improved peak power
density is necessary. the motor's peak power is
determined by the maximum allowable temperature of the motor package. if the temperature at
peak output power can be kept low, then a higher
peak power is achieved. the major purpose of
thermal management is to control both the heat
generation and dissipation. therefore, to maximize
the interior permanent magnet (ipM) motor peak
power capability, the losses or heat generation
among the various key components, such as the
windings, stator core, and magnets, should be reasonably distributed.
the essential dissipation path from the heat
source to the water jacket is the outer surface of
the stator core when using water cooling. on the
one hand, the thermal conductivity of the insulating materials is much smaller than that of the
metallic materials, and, thus, there is a significant
temperature difference between the winding and
the stator core. on the other hand, the end winding

T

rila
pet
m/m
s.co
e
g
ima
ree
of f

Improving
Peak Power
in Electrified
Vehicles
The development of a hierarchical
design optimization method.

Digital Object Identifier 10.1109/MELE.2014.2312990
Date of publication: 24 June 2014

2325-5987/14©2014 IEEE

IEEE Elec trific ation Magazine / j une 2 0 1 4

25



http://www.freeimages.com/mpetrila

Table of Contents for the Digital Edition of IEEE Electrification Magazine - June 2014

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