Vector Control - Kruger Ecowatt K320 Series Operation Manual

Ecowatt Drive K320 series
®
Function
code
Rated current of
P02.19
Function
selection of
multifunction
P05.01–P05.
digital input
06
terminals
(S1–S4, HDIA,
P07.01 Reserved
QUICK/JOG key
function
P07.02
selection

5.5.3 Vector control

AMs feature high order, nonlinearity, strong coupling and multi-variables, which increase
difficulty to control AMs during actual application. The vector control technology solves this
situation as follows: measures and controls the stator current vector of the AM, and then
decomposes the stator current vector into exciting current (current component that generates
internal magnet field) and torque current (current component that generates torque) based on
field orientation principle, and therefore controls the amplitude values and phase positions of
the two components (namely, controls the stator current vector of the AM) to realize
decoupled control on exciting current and torque current, thus achieving high-performance
speed regulation of the AM.
The VFD uses the sensor-less vector control algorithm, which can be used to drive AMs and
permanent-magnet SMs simultaneously. As the core algorithm of vector control is based on
accurate motor parameter models, the accuracy of motor parameters affects vector control
performance. It is recommended to enter accurate motor parameters and autotune motor
parameters before executing vector control.
As the vector control algorithm is complicated, exercise caution before modifying vector
control function parameters.
Name
0.8–6000.0A
SM 1
36: Switch the running command channel to
keypad
37: Switch the running command channel to
terminal
38: Switch the running command channel to
communication
HDIB)
Range: 0x00–0x27
Ones place: Function of QUICK/JOG
0: No function
1: Jog
2: Reserved
3: Switch between forward and reverse
rotating
4: Clear the UP/DOWN setting
5: Coast to stop
6: Switch command channels in sequence
7: Reserved
Tens place: Reserved
Description
-53-
Basic operation guidelines
Default
Model
depended
0x01