GEFRAN-SIEI ARTDrive Vector V2 400Vac Series, Instruction Manual

Page: 196 / 387

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[Unit] Access Default Min/Max Format Reg.Mode Level Ipa
Parameter Name
Description
Chapter 6 Parameter • 196 ARTDrive V2 series - Instruction Manual
REG PARAM / DeadTime
N
OTE
!
Menu accessible with Access Level = FULL
The Dead time comp function allows for compensation of the output voltage distortion
due to IGBT voltage drop and its switching characteristics.
Distortion of output voltage may cause non uniform, non smooth shaft rotation in open
loop
V/f control
or in a closed loop
Sensorless Vector
control mode errors in speed
estimation especially at very low speeds.
Through the two parameters it is possible to set a voltage value and the compensation
variation, called Gradient.
N
OTE
!
Both parameters are automatically measured during autotune procedure.
If required, it is possible to follow a procedure that allowos to compensate the IGBT
voltage output distortion; see section 7.3, IGBT Voltage Output Distortion.
Dead time slope
i
v
Dead time limit
Voltage cmd to pwr Output voltage
+
+
Figure E04: Dead time compensation
E04 REG PARAM / DeadTime
E04.00 Dead time limit [V] RWS Calc 0.00/50 PP V-F-S-B Full 530
Value of the voltage compensation.
E04.01 Dead time slope [V/A] RWS Calc 0.00/100 PP V-F-S-B Full 540
Compensation Gradient.