
C-2
SB3000 Drive Configuration and Programming
Figure C.1 – Control Structure
Hardware
Software
Ki = Vml - Wco
Vml - A
Kp = Vml - Wco
C
Generate
PWM
Vu
Vv
Vw
2/3
Vq
PI
(Iq_Fbk)
(Iq_Cmd)
Cnf I_Lmt
∗
1.414
++
PI_Lmt_E1
++
PI_Lmt_E4
+
+
z-1
Ki
Kp
E1
Vd
PI
(Id_Fbk)
(Id_Cmd)
Limit Power
Factor Current
(Vdc_Ref_E0)
(Ipf_Ref_E1)
++
Ramp
Filter
25%
Vml_Kd
z-1
+
–
+
–
if (!drv_on||restart)
Vdc_Ref_E0 = Vdc_Ramp_E1++/10
Min_Vdc_Ref_E0
= Vac_Rms_E0
∗
1.414
∗
1.1
Max_Vdc_Ref_E0
= Max_Volts - 25
=875
(Pi_Lmt_E1)
(
Pi_Lmt_E4)
1000
Vml_Ff
Filter
40%
+
–
(Cnf.I_Lmt_E1
∗
1.414)
(Idc_Fbk_E1)
(Vdc_Ref_E0)
(Vdc_Fbk_E0)
f(460) = 715
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