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PROGRAMMING GUIDE
SINUS PENTA
277
/
486
C010 (C053, C096) Type of Control Algorithm
C010 (Motor 1)
C053 (Motor 2)
C096 (Motor 3)
Range
0
÷
2
0: IFD
1: VTC
2: FOC
Default
0
0: IFD
Level
BASIC
Address
1010
1053
1096
Function
This parameter sets the type of control algorithm to be used.
Type of controls:
0: IFD V/f control
1: VTC Sensorless Vector Torque control
2: FOC Field Oriented Control
The
V/f control (IFD)
allows controlling the motor by producing voltage
depending on frequency. It is possible to configure several types of V/f patterns
(see V/f Pattern (IFD Only)).
The
Sensorless Vector Control (VTC)
and
Field Oriented Control (FOC)
are
field-oriented control modes.
The FOC is a closed-loop control, so a speed transducer is required to detect
the position of the shaft of the connected motor.
The VTC is a control mode w/out speed feedback, so no position/speed
transducer is required: based on a dynamic model of an asynchronous motor,
the algorithm estimates the speed and orientation of the motor flux.
Both controllers guarantee segregation between the flux control and the torque
control. In that way, the motor flux is adjusted based on the magnetizing
current, obtained from
No-load current C021
(
C064
for motor 2 and
C107
for motor 3).
When the VTC or FOC controls are used, the connected motor can be
controlled either via a torque reference or via a speed reference; in that case,
the speed control loop, based on the error between reference speed and
measured speed (FOC) or the estimated speed (VTC) is the external control
loop for the torque controller.
The equations used for VTC and FOC control algorithms require the following
equivalent parameters of the asynchronous device:
stator resistance C022
(
C065
for motor 2,
C108
for motor 3),
mutual inductance C024
(
C067
for motor 2,
C110
for motor 3) and
rotor time constant C025
(
C068
for motor 2,
C111
for motor 3).
As per VTC, the following value is required
leakage inductance C023
(
C066
for motor 2 and
C109
for motor 3).
NOTE
FOC control requires a speed transducer, such as an encoder feedback.
CAUTION
It is not advisable to set VTC and FOC algorithms with a nominal current motor lower
than 50% of the drive size, otherwise the control performance is not guaranteed.
Содержание PENTA MARINE
Страница 173: ...PROGRAMMING GUIDE SINUS PENTA 173 486 Figure 27 Response to the step based on the value of Kp when Ti is kept constant...
Страница 196: ...SINUS PENTA PROGRAMMING GUIDE 196 486 Figure 34 ANALOG Mode Figure 35 DOUBLE DIGITAL Mode...
Страница 197: ...PROGRAMMING GUIDE SINUS PENTA 197 486 Figure 36 General structure of the parameterization of a digital output...