TDE MACNO OPD EXP - Page 22

22
80
82
84
86
88
90
92
94
96
98
100
102
45,0 55,0 75,0 82,0 88,0 93,065,0 97,0 100,0 102,0
φ
/
φ
NOM
K
φ
The term K
φ is equal to:
Id I
φ
ΦΦNOM
i.e. it is the coefficient that when multiplied by the normalized flux in relation to the rated flux gives
the normalized flux current in relation to the magnetizing current.
The characteristic is assumed to be constant for normalized fluxes under 45%.
At the end of these readings, the results will be shown in the parameters below, which may still be
changed by the user.
1 2 3 4 5 6 7 8 9 10
φ/
φNOM
45.0% 55.0% 65.0% 75.0% 82.0% 88.0% 93.0% 97.0% 100.0% 102.0%
P131 P133 P135 P137 P139 P141 P143 P145 P147 P149
Kφ
..... ...... ...... ...... ...... ....... ....... ....... ...... ......
The magnetizing current may also be viewed in the parameter below:
Name Description
PRC_MOT_I_FLX_NOM P73 - Nominal flux current
2.1.5.1.4 TEST 4: READING THE ROTOR TIME CONSTANT AND
ESTIMATING THE STATOR TIME CONSTANT
This test establishes the rotor time constant from the motor and helps to estimate the stator time
constant by using data from other auto-tuning values.
During the test, the motor is rotated at the same speed as the previous test and then it goes in free
revolution
During the test, the motor rotates at a speed equal to about 80% of the rated speed and is
temporarily left to idle.
The following parameters are modified at the end of the test: