Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 421)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 421
PowerFlex 755 Control Block Diagrams Appendix A
Figure 55 - Torque Control - Overview (IPM)
Torque Control –
Overview
Interior Permanent Magnet Motor (IPM)
1 2 3 4 5 6
B
A
D
C
F
E
H
G
I
PF
755 Rev
_10.a
Page
21b
Torque
Reference
Scale
and Trim
Spe
ed /
Torq
ue /
Position
Mode Sel
ect
+
-
Torq
ue
Limit
Inertia
Adaption
Torque
Limit
Sele
ct
+
+
Bus
Voltage
Regulator
To
rqu
e S
te
p
Spd Reg PI Out
Torq Ref 1 Torq Ref 2
Torq Tri
m
Speed
Reg
Output
Trim
Inertia Comp
Rege
n Po
we
r L
imit
Pos Torque Limit
Neg Torque Limit
Notch Filter
F
iltered
Tor
que Ref
+
+
Select
Dr
ive Voltage and
Current Ratings Brake/Bus Config DC
Bus Vo
ltag
e
Cur
ren
t
Limit
Rate Limit
Iq
Cur
ren
t
Ref
Pwr
Te
Calc
Power, Torque, and Current Limit Reference Generation
Current
Limit
Processing
and
Selection
+
Load
Observ
er/
Estimator
Fr
iction
Comp
+
Te
Id
Calc
Vo
lta
ge
Li
mit
Cur
ren
t
Limit
Id
Cur
ren
t
Ref
Te
Iq
Calc
Id