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