RMxprt中电机参数
问题:通过Rmxprt生成的2D三相感应电机模型,瞬态场中可以满载运行,如图1,但是根据Rmxprt-design sheet中获取参数换算成的电机等效电路参数用于simulink仿真,发现半载以上就带不动了,转速快速下降,如图2,请教过一位博士,得出结论是漏感太大影响最大转矩点怀疑是否是Rmxprt-design sheet中获取参数换算出错?
额定频率140Hz 三相感应电机 Y接
Rmxprt-design sheet参数如下:
RATED-LOAD OPERATION
Note:
This motor cannot offer the given rated output power.-->为什么无法运行在额定负载下
The following results are at the given rated speed.
Stator Resistance R1 (ohm): 0.247906-->定子电阻
Stator Resistance at 20C (ohm): 0.203922-->
Stator Leakage Reactance X1 (ohm): 2.57291-->定子漏感 2.93mH
Slot Leakage Reactance Xs1 (ohm): 1.60622
End Leakage Reactance Xe1 (ohm): 0.80575
Harmonic Leakage Reactance Xd1 (ohm): 0.16094
Rotor Resistance R2 (ohm): 0.25951-->转子电阻
Rotor Leakage Reactance X2 (ohm): 4.3596-->转子漏感4.96mH
Resistance Corresponding to
Iron-Core Loss Rfe (ohm): 1.61109e+08
Magnetizing Reactance Xm (ohm): 131.65-->励磁电感0.140H
Stator Phase Current (A): 29.2285
Current Corresponding to
Iron-Core Loss (A): 6.61295e-06
Magnetizing Current (A): 8.09269
Rotor Phase Current (A): 27.1995
Copper Loss of Stator Winding (W): 635.36
Copper Loss of Rotor Winding (W): 575.968
Iron-Core Loss (W): 0.0211364
Frictional and Windage Loss (W): 200
Stray Loss (W): 856.192
Total Loss (W): 2267.54
Input Power (kW): 87.8867-->讲道理,应该是600kW左右
Output Power (kW): 85.6192
Mechanical Shaft Torque (N.m): 195.974
Efficiency (%): 97.4199
Power Factor: 0.90006
Rated Slip: 0.00666667
Rated Shaft Speed (rpm): 4172
先谢谢大家了~
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