BLDC电机导入2D后额定转速偏大
BLDC电机在RMxprt里额定转速60000左右，但是导入2D后可以到70000~80000转，想请问一下各位大佬是不是电磁设计上有问题？该从什么地方改进？PERMANENT MAGNET DATA
Residual Flux Density (Tesla): 1.23
Coercive Force (kA/m): 890
Maximum Energy Density (kJ/m^3): 273.675
Relative Recoil Permeability: 1.09981
Demagnetized Flux Density (Tesla): 0.000150146
Recoil Residual Flux Density (Tesla): 1.23
Recoil Coercive Force (kA/m): 890
USER DEFINED DATA
Fractions: 1
MATERIAL CONSUMPTION
Armature Copper Density (kg/m^3): 8900
Permanent Magnet Density (kg/m^3): 7400
Armature Core Steel Density (kg/m^3): 7650
Rotor Core Steel Density (kg/m^3): 7650
Armature Copper Weight (kg): 0.0635678
Permanent Magnet Weight (kg): 0.0169058
Armature Core Steel Weight (kg): 0.166756
Rotor Core Steel Weight (kg): 0.0272334
Total Net Weight (kg): 0.274464
Armature Core Steel Consumption (kg): 0.423841
Rotor Core Steel Consumption (kg): 0.0665645
STEADY STATE PARAMETERS
Stator Winding Factor: 0.866025
D-Axis Reactive Inductance Lad (H): 0.000100143
Q-Axis Reactive Inductance Laq (H): 0.000100143
D-Axis Inductance L1+Lad(H): 0.000401252
Q-Axis Inductance L1+Laq(H): 0.000401252
Armature Leakage Inductance L1 (H): 0.00030111
Slot Leakage Inductance Ls1 (H): 0.000249204
End Leakage Inductance Le1 (H): 9.74574e-06
Harmonic Leakage Inductance Ld1 (H): 4.21596e-05
Zero-Sequence Inductance L0 (H): 5.44387e-05
Armature Phase Resistance R1 (ohm): 0.121067
Armature Phase Resistance at 20C (ohm): 0.0995875
D-Axis Time Constant (s): 0.000827166
Q-Axis Time Constant (s): 0.000827166
Ideal Back-EMF Constant KE (Vs/rad): 0.0326766
Start Torque Constant KT (Nm/A): 0.00500995
Rated Torque Constant KT (Nm/A): 0.0456674
NO-LOAD MAGNETIC DATA
Stator-Teeth Flux Density (Tesla): 1.12204
Stator-Yoke Flux Density (Tesla): 1.10971
Rotor-Yoke Flux Density (Tesla): 1.45319
Air-Gap Flux Density (Tesla): 0.622331
Magnet Flux Density (Tesla): 0.813344
Stator-Teeth By-Pass Factor: 0.00115597
Stator-Yoke By-Pass Factor: 5.18496e-05
Rotor-Yoke By-Pass Factor: 4.57661e-05
Stator-Teeth Ampere Turns (A.T): 6.34214
Stator-Yoke Ampere Turns (A.T): 13.0085
Rotor-Yoke Ampere Turns (A.T): 1.11517
Air-Gap Ampere Turns (A.T): 522.014
Magnet Ampere Turns (A.T): -542.67
Armature Reactive Ampere Turns
at Start Operation (A.T): 17288.6
Leakage-Flux Factor: 1
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.86681
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.201023
No-Load Speed (rpm): 90197.1
Cogging Torque (N.m): 0.00270121
FULL-LOAD DATA
Average Input Current (A): 10.4564
Root-Mean-Square Armature Current (A): 12.8069
Armature Thermal Load (A^2/mm^3): 1078.92
Specific Electric Loading (A/mm): 55.0335
Armature Current Density (A/mm^2): 19.6049
Frictional and Windage Loss (W): 10.3675
Iron-Core Loss (W): 4.07008
Armature Copper Loss (W): 59.5709
Transistor Loss (W): 54.43
Diode Loss (W): 12.821
Total Loss (W): 141.26
Output Power (W): 3100.23
Input Power (W): 3241.49
Efficiency (%): 95.6421
Rated Speed (rpm): 62205.1
Rated Torque (N.m): 0.475926
Locked-Rotor Torque (N.m): 6.31922
Locked-Rotor Current (A): 1261.65
WINDING ARRANGEMENT
The 3-phase, 2-layer winding can be arranged in 3 slots as below:
ABC
Angle per slot (elec. degrees): 120
Phase-A axis (elec. degrees): 60
First slot center (elec. degrees): 0
TRANSIENT FEA INPUT DATA
For Armature Winding:
Number of Turns: 54
Parallel Branches: 1
Terminal Resistance (ohm): 0.121067
End Leakage Inductance (H): 9.74574e-06
2D Equivalent Value:
Equivalent Model Depth (mm): 20
Equivalent Stator Stacking Factor: 0.95
Equivalent Rotor Stacking Factor: 0.95
Equivalent Br (Tesla): 1.23
Equivalent Hc (kA/m): 890
电压多少啊？你反电势力差不多2.7v，按220v电压Y接法也就8万转 小伺服老刘 发表于 2020-7-11 21:16
电压多少啊？你反电势力差不多2.7v，按220v电压Y接法也就8万转
额定电压给的是310V 小菜菜菜 发表于 2020-07-11 22:27
额定电压给的是310V
那就对了，2d里面应该是空载转速吧
负载转速还要低点 小伺服老刘 发表于 2020-7-11 23:56
那就对了，2d里面应该是空载转速吧
负载转速还要低点
我在2D里设置跑的是从启动到额定转速，结果最后额定转速达到75000左右，跟RMxprt里相差较大 小菜菜菜 发表于 2020-07-12 09:15
我在2D里设置跑的是从启动到额定转速，结果最后额定转速达到75000左右，跟RMxprt里相差较大
设置内容和结果发了看看 小伺服老刘 发表于 2020-7-12 09:48
设置内容和结果发了看看
之前的结果我删掉了，曲线类似这样，最后稳定在75000的样子
小菜菜菜 发表于 2020-07-12 10:22
之前的结果我删掉了，曲线类似这样，最后稳定在75000的样子
激烈使用的截图看下， 小伺服老刘 发表于 2020-07-12 11:48
激烈使用的截图看下，
load torque里是自动生成的公式吧？ 小伺服老刘 发表于 2020-7-12 11:49
load torque里是自动生成的公式吧？
嗯嗯，就是导入以后自动生成的 小菜菜菜 发表于 2020-07-12 12:37
嗯嗯，就是导入以后自动生成的
我的曲线跟你不一样
小菜菜菜 发表于 2020-07-12 12:37
嗯嗯，就是导入以后自动生成的
rm里750w，AC220v，2.39nm，额定3000rpm，2d里起始速度3000rpm，激励使用自生成电路，然后torque，speed就这样了，还蛮准的
http://magimg.simol.cn/pic/20200712/1594535863656111679.jpg
http://magimg.simol.cn/pic/20200712/1594535890231219504.jpg
http://magimg.simol.cn/pic/20200712/1594535920743980815.jpg
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