AXIS#.FIELDWEAKENING.VBUSMARGIN
Description
AXIS#.FIELDWEAKENING.VBUSMARGIN determines the field-weakening-loop’s threshold voltage with respect to the bus voltage in [%]. By default, this value is set to 95%, meaning if the magnitude of the motor-voltage vector tries to go above 95% of bus voltage, the field weakening algorithm activates. Once activated, it maintains the motor-voltage vector magnitude at 95% of bus voltage. It applies whatever d-axis current necessary to reduce the induced back-emf-voltage of the motor to create the commanded q-axis current.
- Setting this value to higher than 95% means having less voltage margin for the voltage regulation but results in higher voltage utilization.
- Setting this value to lower than 95% means having higher voltage margin for the voltage regulation but results in lower voltage utilization.
Versions
| Action | Version | Notes |
|---|---|---|
| Implemented | 02-06-00-000 |
|
General Information
|
Type |
Read/Write |
|
Units |
% |
|
Range |
0 to 100% |
|
Default Value |
95 |
|
Data Type |
Integer |
|
Stored in Non-Volatile Memory |
Yes |
Fieldbus Information
|
Command |
Index |
SubIndex |
Data Type |
Units |
Float Scale |
Access |
PDO Mappable |
|---|---|---|---|---|---|---|---|
|
AXIS1.FIELDWEAKENING.VBUSMARGIN |
5019h |
03h |
Signed32 |
- |
- |
Read/Write |
No |
|
AXIS2.FIELDWEAKENING.VBUSMARGIN |
5119h |
03h |
Signed32 |
- |
- |
Read/Write |
No |
|
ID |
Instance |
Attribute |
Name |
Data Type |
Access |
User Mappable |
|---|---|---|---|---|---|---|
|
7303 |
1 |
7303 (0x1c87) |
AXIS1.FIELDWEAKENING.VBUSMARGIN |
Signed32 |
Read/Write |
Yes |
|
72839 |
2 |
7303 (0x1c87) |
AXIS2.FIELDWEAKENING.VBUSMARGIN |
Signed32 |
Read/Write |
Yes |
|
Parameter |
PNU |
Data Type |
Access |
Units |
|---|---|---|---|---|
|
AXIS#.FIELDWEAKENING.VBUSMARGIN |
7303 |
Signed32 |
Read/Write |
- |
