小时月 发表于 2021-12-22 09:46

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~

页: [1]
查看完整版本: RMxprt中电机参数