Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 215

Block diagram of Real sensorless vector control
φ 2
ω *
+
-
ω FB
Block diagram of Vector control
φ 2
ω *
+
-
ω FB
ω FB
214
5. PARAMETERS
5.2 Control method
Magnetic
id *
+
flux
control
-
id
iq
*
Speed +
control
ω 0
+
ω FB
+
ω s
iq
Slip
calculation
φ 2
Speed estimation
*
Magnetic
id
+
flux
control
-
id
*
iq
+
Speed
control
-
iq
+
ω 0
+
ω s
iq
Slip
calculation
φ 2
calculation
Pre-excitation
Vd
current
control
Torque
Vq
current
control
-
iq
iq
Magnetic
id
flux
Vd
calculation
Vq
Pre-excitation
Vd
current
control
Torque
Vq
current
control
id
iq
Magnetic
id
flux
PWM
modulation
Output
voltage
conversion
ω 0
id
Current
iq
conversion
Encoder
PWM
modulation
Output
voltage
conversion
ω 0
Current
conversion
I M
I M