YASKAWA FSDrive-MV1S, Instructions Manual

Page: 219 / 220

10
-2
Functional Block Diagrams
The Inverter functional block diagrams for open-loop vector control and flux vector control are shown
below.
‹
Open-loop Vector Control
‹
Flux Vector Control
U1-33
+
−
Speed
control
Frequency
control
SFS
V/f
+
+
+
+
+
+
+
−
+
−
+
−
d-q
Coordinates
conversion
dt
PWM
C1-01 C1-11
C2-01 C2-04
C4-01 L7-01
IM
U1-65
U1-32
C3-01 C3-03
N2-01 N2-05
V/F constants
E1-04 E1-13
E2-03
U1-52
U1-64
U1-02
U1-06
Output frequency
(Fout)
U1-19
U1-18
Output voltage
reference (Vref)
IM
U1-90
U1-20
U1-09 Torque reference(Tref)
U1-78
U1-26,27
U1-03
(Vq,Vd)
U1-05
Motor speed (N)
U1-53
φ
*
*
Slip(Fs)
C4-02 L7-04
Speed reference
(Fref)
Soft starter output
U1-01
Soft starter
Torque
limit
Torque current reference (Iqref)
q-axis current control output
Excitation current reference
(Idref)
d-q
current
control
Vector
calculation
Flux reference
φ
No-load current
d-axis current
control output
Slip
calculation
EMF
compensation
Actual excitation
current (Id)
Actual torque
current (Iq)
PWM
voltage
correction
Output current (I1)
Power
supply
Input voltage
(Vin)
Inverter
Output
voltage
(Vout)
to
to to
to
to
to
Flux
U1-33
+ + +
− −
−
U1-01
SFS
V/f
d-q
Coordinates
conversion
dt
PWM
C1-01 to to to
to
C1-11
C2-01 C2-04
C5-01 L7-01
IM
U1-65
U1-32
E1-04 to E1-13
E2-03
U1-52
U1-64
U1-02
U1-06
U1-19
U1-18
IM
U1-90
U1-20
U1-09
U1-78
U1-26, 27
U1-03
(Vq,Vd)
U1-05
U1-53
φ
*
Flux reference
C5-08 L7-04
U1-51
PG
Fmin limit
zero-speed
BB
B1-05
E1-09
Inverter
Output
voltage
(Vout)
Power
supply
Speed reference
(Fref)
Soft starter output
Soft starter
Torque compensation
(Tcomp)
Torque
limit
Speed
control
Torque reference (Tref)
Torque current reference
(Iqref)
Excitation current
reference (Idref)
No-load current
Slip (Fs)
Slip
calculation
V/F constants
Motor speed (N)
q-axis current
control output
d-axis current
control output
Output frequency
(Fout)
Actual excitation
current (Id)
Actual torque
current (Iq)
Output voltage
reference (Vref)
Vector
calculation
PWM
voltage
correction
Output current (I1)
Input voltage
(Vin)
÷
φ
*
+
+
+
+
+
+
+
+
d-q
current
control
EMF
compensation
Flux