Adtech iMASTER – A1 Series User Manual page 135

A1-User's Manual
Range: 0 ~ 10000 Sec in 1 Sec

Initial value: 100 Sec

Real time editable I gain for OVS PID loop
Example ( Integration Time to 10Hz on Error)




25.05 OVS D gain

Range: 0 ~ 10000 Sec in 1Sec

Initial value: 0 Sec

Real time editable D gain for OVS PID loop. Its value depends on
filter bandwidth. Thus, if
'25.05' (OVS D gain)

25.06 q-Current reference

Range: -100.0 ~ 100.0 in 0.1

Initial value: 0.0

Real time editable q axis reference current compensates Torque Estimate Error.


PIOut = ∫(err * Ki)

Hz += err(%) * Ki * scalefactor(50 *1e-6), dT = 1ms

err 10%, Ki = 1000
Time to 10Hz on 10% Error = 20ms

err 10%, Ki = 100
Time to 10Hz on 10% Error = 200ms

err 10%, Ki = 10
Time to 10Hz on 10% Error = 2000ms

Recommended Value in test bench
100 or less than 500

'25.07' (Filter bandwidth)
value. Most application, this value should not be set over 3000
Recommended Value as a function of
If '25.07' < 10 

'25.07'
If < 30 

If '25.07' < 50 

If Torque estimate offset is bigger than 0
No increase in output frequency even if regeneration is occurred.

This situation could be end with OV Trip.

'25.06' (q-Current reference)
If so, set

If Torque estimation offset smaller than 0
No increase in output frequency even if regeneration is not occurred.

Output Frequency could be increased to Max. Freq (Reference Frequency +

'25.02' (Maximum OVS output frequency)
control Fail)
If so, set '25.06' (q-Current reference)

is not changed, no need to change
'25.07' (Filter bandwidth)
'25.05' : 0 ~ 500
'25.05'
: 500 ~ 1000
'25.05' : 1000 ~ 1500
to a positive value
) and end up with ovFS (OVS
to a negative value
１３１
'25.07' (Filter bandwidth)
;