67
flywheel device due to the fan on the TEFC motor frame. However, the water brake load
uses a rotary vane design, and this most likely contributes significantly to the C
tl
term.
Table 7 Dynamic load model estimated parameters
Dynamic Load Model
Parameters
Estimated Value
10 hp
Estimated Value
50 hp
Estimated Value
75 hp
R
bm
1.2 e-013
2.3 e-014
2.3 e - 014
R
bl
1.6 e-008
2.3 e-014
3.0 e -005
C
tl
0.040
0.095
0.13
C
tm
0.019
0.011
0.033
k
tTT
0.33 e005
2.4 e005
3.0 e 005
C
tml
18.93
12.46
10.94
D
0.0010
0.0052
0.0080
The estimated values of the motor parameters for the 10 hp, 50 hp, and 75 hp motor are listed
in Table 8, Table 9, and Table 10, respectively. The motor manufacturer parameters are also
included for the 10 hp and 50 hp motor for comparison. The estimated parameters, on
average, require an adjustment of the motor manufacturer parameters by a factor of 4.
Table 8 10 hp induction motor parameters
Parameter Motor Manufacturer (
)
Std. Estimation (
)
NL Estimation (
)
r
s
0.420
1.01
0.945
x
ls
0.300
0.00177
0.0440
r
r
0.108
0.708
0.519-0.705 *
x
lr
0.300
2.90
2.46-7.51 *
x
m
12.0
54.0
134
* see Fig 44
Table 9 50 hp induction motor parameters
Parameter Motor Manufacturer (
)
Std. Estimation (
)
NL Estimation (
)
r
s
0.370
0.145
0.138
x
ls
0.290
0.0509
0.118
r
r
0.029
0.107
0.0375 0.126 *
x
lr
0.236
0.842
0.608 2.17 *
x
m
7.76
29.4
19.5
* see Fig 45
Summary :
Table 7 Dynamic load model estimated parameters Dynamic Load Model Parameters Estimated Value 10 hp Estimated Value 50 hp Estimated Value 75 hp R bm 1.2 e-013 2.3 e-014 2.3 e - 014 R bl 1.6 e-008 2.3 e-014 3.0 e -005 C tl 0.040 0.095 0.13 C tm 0.019 0.011 0.033 k tTT 0.33 e005 2.4 e005 3.0 e 005 C tml 18.93 12.46 10.94 D 0.0010 0.0052 0.0080 The estimated values of the motor parameters for the 10 hp, 50 hp, and 75 hp motor are listed in Table 8, Table 9, and Table 10, respectively.
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parameters,table,estimated,estimation,manufacturer,alue,load,005,parameter,e014,dynamic,induction,std