Nord Drivesystems NORDAC FLEX SK 200E Series User Manual page 154

NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
Pos : 364 /Anleitungen/El ektr oni k/FU und Starter/5. Par ameter/Par ameter auflistung (P000 ...)/P200- P299/Parameter P241 – Indukti vi taet PM SM @ 0\mod_1327590972170_388.doc x @ 8393 @ @ 1
P241 Inductivity PMSM
[-01]
[-02] (Inductivity PMSM)
0.1 ... 200.0 mH The typical asymmetric reluctances of the PMSM are compensated with this parameter. The stator
inductances can be measured by the frequency inverter (P220)
{ all 20.0 }
[-01] = d axis (L
Pos : 365 /Anleitungen/El ektr oni k/FU und Starter/5. Par ameter/Par ameter auflistung (P000 ...)/P200- P299/Parameter P243 – Rel uktanz winkel IPM SM @ 6\mod_1417603844346_388.doc x @ 191712 @ @ 1
P243 Reluct. angle IPMSM
(Reluctance angle IPMSM)
0 ... 30 ° In addition to the synchronous torque, synchronous motors with embedded magnets also have a
reluctance torque. The reason for this is due to the anisotropy (inequality) between the inductivity in
{ 0 }
the d and the q direction. Due to the superimposition of these two torque components, the optimum
efficiency is not at a load angle of 90°, as with SPMSMs, but rather with larger values. This
additional angle, which can be assumed as 10° for NORD motors, can be taken into account with
this parameter. The smaller the angle, the smaller the reluctance component.
The specific reluctance angle for the motor can be determined as follows:
•
•
Pos : 366 /Anleitungen/El ektr oni k/FU und Starter/5. Par ameter/Par ameter auflistung (P000 ...)/P200- P299/Parameter P244 – Spitz enstrom PM SM @ 0\mod_1327591035576_388.doc x @ 8416 @ @ 1
P244 Peak current PMSM
(Peak current PMSM)
0.1 ... 1000.0 A This parameter contains the peak current of a synchronous motor. The value must be obtained
from the motor data sheet.
{ 5.0 }
Pos : 367 /Anleitungen/El ektr oni k/FU und Starter/5. Par ameter/Par ameter auflistung (P000 ...)/P200- P299/Parameter P245 – Pendeldämpfung PMSM VFC @ 6\mod_1417605252683_388.doc x @ 191743 @ @ 1
P245 Osc damping .PMSM VFC
(Oscillation damping PMSM VFC)
5 ... 100 % In VFC open-loop mode, PMSM motors tend to oscillate due to insufficient intrinsic damping. With
the aid of "oscillation damping" this tendency to oscillate is counteracted by electrical damping.
{ 25 }
Pos : 368 /Anleitungen/El ektr oni k/FU und Starter/5. Par ameter/Par ameter auflistung (P000 ...)/P200- P299/Parameter P246 – Mas sentr ägheit PMSM @ 0\mod_1327591081936_388.doc x @ 8439 @ @ 1
P246 Mass inertia PMSM
(Mass inertia PMSM)
0.0 ... 1000.0 kg*cm² The mass inertia of the drive system can be entered in this parameter. For most applications the
default setting is sufficient. However, for highly dynamic systems the actual value should ideally be
{ 5.0 }
entered. The values for the motors can be obtained from the technical data. The portion of the
external centrifugal mass (gear unit, machine) must be calculated or determined experimentally.
Pos : 369 /Anleitungen/El ektr oni k/FU und Starter/5. Par ameter/Par ameter auflistung (P000 ...)/P200- P299/Parameter P247 – U msc haltfrequenz VFC PMSM @ 6\mod_1417606764814_388.doc x @ 191774 @ @ 1
Switch freq.VFC PMSM
P247
(Switchover frequency VFC PMSM)
1 ... 100 % In order to provide a minimum amount of torque
immediately in case of spontaneous load changes, in VFC
{ 25 }
mode the setpoint of I
depending on the frequency (field increase mode) The
amount of this additional field current is determined by
parameter (P210). This reduces linearly to the value "zero",
which is reached at the frequency which is governed by
(P247). In this case, 100 % corresponds to the rated motor
frequency from (P201).
Pos : 370 /Allgemein/Allgemeingültig e Module/---------Seitenumbr uc h kompakt --------- @ 13\mod_1476369695906_0.doc x @ 2265495 @ @ 1
154
)
d
Allow drives with constant load ( > 0.5 M
Gradually increase the reluctance angle (P243) until the current (P719) reaches a minimum
(magnetisation current) is controlled
d
[-02] = q axis (L )
q
) to run in CFC mode (P300 ≥ 1)
N
S P
S P
S P
S P
S P
S P
BU 0200 en-3118