Function Specifications Of Sensorless Vector Control Software - Renesas RA6T2 Application Note

Sensorless vector control for permanent magnetic
synchronous motor - 1shunt current detection

3.2 Function specifications of sensorless vector control software

The block diagram of sensorless vector control is shown below.
Speed control Process
i *
d
i *=0
q
Open-loop to Sensorless
Switching Control
Figure 3-7 Block Diagram of Sensorless Vector Control (Openloop Control)
Speed control Process
i
q
Speed
ω*
PI
ω
ω
LPF
Speed
LPF
Figure 3-8 Block Diagram of Sensorless Vector Control (Sensorless Control)
R01AN6840EJ0100 Rev.1.00
May 23, 2023
Current
i *
q
PI
v
i
i
i *
q d
q
i
q
ω*
i *
d
**
Flux-
Current
i *
q
weakening PI
i
i
i
i
d
q
q d
LPF
For Renesas Flexible Motor Control Series
Carrier Interrupt Process
+ v *
dq
d
-
v *
+
q
Voltage
UVW
+
Limit
**
v ** θ
q d
Decoupling
Control
1/s
* i *
ω*
d
v * v
+
q
-
ω
comp
e
Openloop
d
Damping
Control
e
q
Carrier Interrupt Process
v *
+
dq
d
-
v *
+
q
Voltage
UVW
+
Limit
v **
v ** θ
q d
Decoupling
Control
i * i * ω*
q d
v
q
θ
ω
⊿θ
Angle & Speed
Estimater
v
v
u
u Voltage
v
v
error
v
v PWM
Compen v
v
w
w
-sation
θ
i
d
dq
idc
i
q
UVW
*
d
BEMF
Observer
⊿θ
v
v
u
u Voltage
v
v
error
v
v PWM
Compen v
v
w
w
-sation
θ
i
d
dq
idc
i
q
UVW
* v
*
d
BEMF
Observer
M
M
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