Audi Q7 e-tron quattro 4M - Page 31

31
In the stator there are 3sets of coils each with 8parallel coils
interconnected by a delta circuit configuration.
In total, 24 coils are distributed over the circumference of the
stator in such a way that every third coil belongs to the same set of
coils. In this configuration the e-machine can run on three-phase
current. For this purpose, the electric drive power and control
electronics module JX1 activates the coil sets by applying three-
phase AC voltage.
To ensure that the rotor starts to run in the desired direction and
with maximum torque despite the extremely low current input, it
is important that the control electronics activate the three phases
in correct sequence. For this purpose, the control electronics needs
to know the exact position of the rotor and therefore the position
of the pole pairs relative to the coils.
The electric drive power and control electronics JX1 calculate the
exact position of the pole pairs relative to the coils from the
signals generated by drive motor rotor position sensor 1 G713
(refer to page 34).
649_067
649_068
The rotor of the e-machine is bolted to the end plate for separation
clutch K0. The torque converter transmission plate is attached to
the end plate by six screws (page 28).
End plate of separation clutch K0Clutch plate of separa-
tion clutch K0,
page 32
External rotor,
32permanent magnets produce 16pole pairs,
the diaphragm spring is integrated in the rotor
together with the contact plate for separation
clutch K0, page 32.
Stator with 24coils, cooled,
with integrated clutch control
mechanism,
page 32
Coolant feed
Coolant return
U
V
W
Separation clutch drive hub
Power terminals of the e-machine
U
V
W
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