Hitachi Vector Control with the SJ300 Inverter - Page 8

Vector control technical information
SLV Control block diagram (Fig 1)
Speed
control
Voltage calculation
(Interference control)
Torque current
control
(q-ACR)
Magnetizing
current control
(d-ACR)
d-axis secondary
flux control
Compensation
voltage
calculation
Voltage conversion
(2φà3φ)
Frequency
calculation
Integrator
Current converter
(3 φ à 2 φ )
Speed
estimator
Speed reference
Magnetizing
current reference
∆ V
d
∆ V
q
ω
r
*
IwIu
ω
r
^
ω
r
^
i
q
*
i
d
*
i
q
*
i
d
*
i
q
*
∆v
q
0
∆v
d
0
i
d
i
q
i
d
i
q
i
d
*
i
q
*
i
d
*
φ
d
* ω
1
* θ
θ
Iu
Iw
ω
1
*
i
q
v
q
*
v
d
*
v
U
* v
V
* v
W
*
ω
1
*
φ
d
*
φ
d
*
θ
Speed response [H005]
P gain for PI [H050]
I gain for PI [H051]
P gain for P [H052]
[H070], [H071], [H072]
Motor Constant (R1,L,Io,J)
Magnetizing
current Io
Stabilization
factor [H006]
Motor Constant
(R1, R2, L, Io)
Motor Constant
(R1, R2, L, Io)
Motor Constant
(R1, R2, L, Io)
Motor Constant
(R1, R2, L, Io)
Motor Constant
(R1, R2, L, Io)
Motor Constant
(R1, R2, L, Io)
Motor