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UM0324 bảng dữ liệu(PDF) 64 Page - STMicroelectronics

tên linh kiện UM0324
Giải thích chi tiết về linh kiện  This user manual describes
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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UM0324 bảng dữ liệu(HTML) 64 Page - STMicroelectronics

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Library functions
UM0324
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There are two different field weakening operation regions (see Figure 39):
●
the constant power region, where rotor flux is decreased inversely with the speed
(considering the influence of the voltage drop across Lls) while slip frequency increases
until breakdown value;
●
the constant power·speed region, where rotor flux is decreased, but keeping the slip
frequency fixed at breakdown value.
Figure 39.
Torque vs. speed characteristic curve
In order to help you select the most suitable values of flux reference and torque saturation
(as needed by the CalcRotFlxSlipFreq function), a spreadsheet is available, to be filled out
with the following system parameters:
●
Mains AC voltage, rms, Volt (cell B1, Volt);
●
motor rated current, peak amplitude, (cell B2, Ampere); as said before, this data is to
be matched with inverter current rating;
●
motor rated magnetizing current, peak amplitude, (cell B3, Ampere);
●
magnetizing inductance Lm, (cell B4, Henry);
●
leakage inductance Lls ( Llr), (cell B5, Henry);
●
stator resistance rs, (cell B6, Ohm)
●
rotor resistance rr , (cell B7, Ohm);
●
maximum measurable current Imax, peak amplitude, (cell B8, Ampere).



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