Hitachi Vector Control with the SJ300 Inverter Application Note page 8

SLV Control block diagram (Fig 1)
*
r
Speed reference Speed
^
control
r
i *
Magnetizing
d
current reference
Magnetizing
current Io
Motor Constant
(R1, R2, L, Io)
© 2002 Hitachi America, Ltd.
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)
i *
q
Motor Constant
(R1, R2, L, Io)
i *
q
Torque current
v 0
q
control
i
q
(q-ACR)
i *
d
Magnetizing
current control
i
v 0
d
(d-ACR)
d
i *
d-axis secondary *
d
d
flux control
Motor Constant
(R1, R2, L, Io)
Motor Constant
(R1, R2, L, Io)
i *
q
Voltage calculation
i *
d
(Interference control)
*
d
*
V V 1
d q
Compensation
voltage
calculation
Stabilization
factor [H006]
i *
q
Frequency
*
1
calculation
*
d
i
q
Speed
^
r
*
estimator
1
8
v * v * v *
U V W
v *
q
Voltage conversion
v * (2 à3 )
d
Iu
Motor Constant
(R1, R2, L, Io)
Integrator
i
d
Iu
Current converter
i
q
(3 à 2 )
Iw
Motor Constant
(R1, R2, L, Io)
Vector control technical information
Motor
Iw