Voltage/Flux Control - TDE MACNO MINIOPD EXP User Manual

2.2.5 VOLTAGE/FLUX CONTROL

Name
PRC_FLX_REF
V_REF_COEFF
PRC_FLX_MIN
V_REG_KP
V_REG_TF
MOD_INDEX_MAX
PRC_V_REF_DCBUS
PRC_V_REG_KP_COEFF
V_DELAY_COMP
V_REF
MOT_V
PRC_MOT_V
MOD_INDEX
MOT_FLX
The flux regulator generates the request for the flux current required to maintain the magnetic rotor
flux equal to the reference value set in parameter P35 when the working area is with Constant
torque.
P35
When operating with Constant Power the regulator generates a request for the flux current required
to ensure the stator voltage module is the same as the voltage reference value and thus to weaken
the flux gradually as the speed increases.
The active voltage reference value (displayed in d09) is always the smallest of the three values,
which are all normalized in relation to the rated motor voltage (P62):
Parameter P64 "Maximum operating voltage" multiplied by coefficient P36;
o
A term linked to the direct bus voltage with a margin set with P125 (default 96%), because
o
the maximum stator voltage that can be delivered may not exceed the direct voltage divided
by √2;
A term linked to the estimated stator voltage to be applied during flux weakening based on the
required current so that there is a margin with regard to the maximum voltage available and thus to
be better equipped to deal with variations in the required torque
User's manual
Description
P35 - Flux Reference
P36 - Kv Max operating voltage
multiply factor
P52 - Minimum Flux admitted
P80 - Kpi voltage regulator
proportional gain
P82 - Tfi voltage regulator (filter)
time constant
P122 - Max. modulation index
P125 - Voltage reference
function of DC bus
P127 - KpV Corrective coeff.
estimated Kp for voltage loops
P161 - PWM delay
compensation on the voltages
D09 - Voltage reference value at
max. rev.
D17 - Stator voltage reference
value module
D18 - Stator voltage reference
value module
D19 - Modulation index
D27 - Motor Flux
Constant torque working area
+
-
Flux reference
value
P80; P81 and P82
Estimated flux
D27
Min Max Default
0.0 120.0 100
0.0 100.0 100
0.0 100.0 2
0.1 100.0 9.1
0.0 1000.0 11
0.500 0.995 0.98
0.0 100.0 96.00
0.0 200.0 100
-800.0 800.2 50.0
-100 100 0
0
-100 100 0
-100 100 0
0
Voltage
regulator
Flux current
reference value
UM Scale
% MOT_FLX_NOM 40.96
327.67
% MOT_FLX_NOM 40.96
10
ms 10
1000
% 327.67
% 40.96
% TPWM 40.96
% MOT_V_NOM 40.96
V rms 16
% MOT_V_NOM 40.96
40.96
% MOT_FLX_NOM 40.96
33