INVT Goodrive3000 GD3000-01-055G-12 Operation Manual page 78

Goodrive3000 series medium voltage inverters
P03 Group Vector control
Function
Name
code
Speed loop
P03.00
proportional gain 1
Speed loop integral
P03.01
time 1
Switching low
P03.02
frequency
Speed loop
P03.03
proportional gain 2
Speed loop integral
P03.04
time 2
Switching high
P03.05
frequency
Parameters of P03.00~P03.05 are only applicable to vector control mode. Below the switching frequency
1 (P03.02), the speed loop PI parameters are P03.00 and P03.01. Above the switching frequency 2
(P03.05), the speed loop PI parameters are P03.03 and P03.04. Between the switching frequency 1 and
2, the PI parameters are achieved by the linear variation of two group parameters, as shown below:
The speed loop dynamic response characteristic of vector control can be adjusted by setting the
proportional coefficient and integral time of the speed regulator. Either increasing proportional gain or
decreasing integral time will speed up the dynamic response while too high proportional gain or too low
integral time will easily cause system oscillation and overshoot. Too low proportional gain will also easily
cause system oscillation and speed static deviation.
Parameters of the speed loop PI relate to the system inertia closely. Adjust the parameters on basis of
default PI parameters for different load characteristics to meet requirements in various cases.
Function
Name
code
Speed loop output
P03.06
filter
Set the filter time of the speed loop.
Function
Name
code
Vector control slip
compensation
P03.07
coefficient
(Electromotion)
Detailed instruction of parameters
0~200.0
0.000~10.000s
0.00Hz~P03.05
0~200.0
0.001~10.000s
P03.02~P00.03(Max. frequency)
Detailed instruction of parameters
0~8 (corresponding to 0~2^8/10ms)
Detailed instruction of parameters
50~200%
-77-
Goodrive3000 series converter
Default
Setting range
value
0~200.0
0.000~10.000 1.000s
0.00~P03.05 5.00Hz
0~200.0
0.001~10.000 0.500s
P03.02~P00.03 10.00Hz
Default
Setting range
value
0~8
Default
Setting range
value
50~200 100%
20.0
10.0
0