新人求教永磁直流电机设计方法
如题，楼主是大三学生，上个学期老师让我学习电机设计的内容，给了我一种电机的设计指标，我最开始还以为是要给我完整的各种设计参数我只需要仿真，结果现在才发现是要我自己设计并仿真……我滴妈这周快学吐了……言归正传，最近勉强能用RMxprt得出现实中能实现的结果了（不像之前得出输出功率-3kW，效率116%），但距离老师给的额定指标还有距离（额定转速下负载功率是额定功率两倍），现在有点不知道该怎么改进，求各位大佬指点一二。
下面是额定数值：
额定功率(W) 10000
额定电压(V) 800
额定转速(rpm) 4800
额定电流(A) 14
电机极数 16
下面是目前我设计的参数用RMxprt得出的结果：
BRUSHLESS PERMANENT MAGNET DC MOTOR DESIGN
File: Setup1.res
GENERAL DATA
Rated Output Power (kW): 10
Rated Voltage (V): 800
Number of Poles: 16
Given Rated Speed (rpm): 4800
Frictional Loss (W): 0
Windage Loss (W): 0
Rotor Position: Outer
Type of Load: Constant Speed
Type of Circuit: L3
Lead Angle of Trigger in Elec. Degrees: 0
Trigger Pulse Width in Elec. Degrees: 120
One-Transistor Voltage Drop (V): 0
One-Diode Voltage Drop (V): 0
Operating Temperature (C): 75
Maximum Current for CCC (A): 0
Minimum Current for CCC (A): 0
STATOR DATA
Number of Stator Slots: 18
Outer Diameter of Stator (mm): 148.72
Inner Diameter of Stator (mm): 110.68
Type of Stator Slot: 3
Stator Slot
hs0 (mm): 0.78
hs1 (mm): 1.56
hs2 (mm): 13.27
bs0 (mm): 7.03
bs1 (mm): 16.39
bs2 (mm): 15.22
rs (mm): 0.78
Top Tooth Width (mm): 8.84242
Bottom Tooth Width (mm): 5.38602
Skew Width (Number of Slots) 0
Length of Stator Core (mm): 29.74
Stacking Factor of Stator Core: 0.95
Type of Steel: 35W400
Designed Wedge Thickness (mm): 1.32259
Slot Insulation Thickness (mm): 0
Layer Insulation Thickness (mm): 0
End Length Adjustment (mm): 0
Number of Parallel Branches: 1
Number of Conductors per Slot: 100
Number of Layers: 1
Winding Type: Whole Coiled
Average Coil Pitch: 1
Number of Wires per Conductor: 12
Wire Diameter (mm): 0.4
Wire Wrap Thickness (mm): 0
Slot Area (mm^2): 245.094
Net Slot Area (mm^2): 225.065
Limited Slot Fill Factor (%): 75
Stator Slot Fill Factor (%): 85.3087
Coil Half-Turn Length (mm): 48.6081
ROTOR DATA
Minimum Air Gap (mm): 0.5
Outer Diameter (mm): 159.72
Length of Rotor (mm): 30.74
Stacking Factor of Iron Core: 0.95
Type of Steel: 35W400
Polar Arc Radius (mm): 74.86
Mechanical Pole Embrace: 0.7
Electrical Pole Embrace: 0.698937
Max. Thickness of Magnet (mm): 4
Width of Magnet (mm): 20.5135
Type of Magnet: yunsheng38
Type of Rotor: 1
Magnetic Shaft: Yes
PERMANENT MAGNET DATA
Residual Flux Density (Tesla): 1.235
Coercive Force (kA/m): 899
Maximum Energy Density (kJ/m^3): 277.566
Relative Recoil Permeability: 1.09323
Demagnetized Flux Density (Tesla): 7.53784e-05
Recoil Residual Flux Density (Tesla): 1.235
Recoil Coercive Force (kA/m): 899
MATERIAL CONSUMPTION
Armature Copper Density (kg/m^3): 8900
Permanent Magnet Density (kg/m^3): 7800
Armature Core Steel Density (kg/m^3): 7700
Rotor Core Steel Density (kg/m^3): 7700
Armature Copper Weight (kg): 1.17426
Permanent Magnet Weight (kg): 0.324218
Armature Core Steel Weight (kg): 0.726238
Rotor Core Steel Weight (kg): 0.112124
Total Net Weight (kg): 2.33684
Armature Core Steel Consumption (kg): 3.93306
Rotor Core Steel Consumption (kg): 1.88857
STEADY STATE PARAMETERS
Stator Winding Factor: 0.945214
D-Axis Reactive Inductance Lad (H): 0.00168533
Q-Axis Reactive Inductance Laq (H): 0.00168533
D-Axis Inductance L1+Lad(H): 0.006156
Q-Axis Inductance L1+Laq(H): 0.006156
Armature Leakage Inductance L1 (H): 0.00447066
Slot Leakage Inductance Ls1 (H): 0.00143921
End Leakage Inductance Le1 (H): 0.000192684
Harmonic Leakage Inductance Ld1 (H): 0.00283878
Zero-Sequence Inductance L0 (H): 0.00447066
Armature Phase Resistance R1 (ohm): 0.41969
Armature Phase Resistance at 20C (ohm): 0.345229
D-Axis Time Constant (s): 0.00401565
Q-Axis Time Constant (s): 0.00401565
Ideal Back-EMF Constant KE (Vs/rad): 0.689837
Start Torque Constant KT (Nm/A): 0.447433
Rated Torque Constant KT (Nm/A): 1.48037
NO-LOAD MAGNETIC DATA
Stator-Teeth Flux Density (Tesla): 1.60919
Stator-Yoke Flux Density (Tesla): 0.0949539
Rotor-Yoke Flux Density (Tesla): 5.3493
Air-Gap Flux Density (Tesla): 0.497981
Magnet Flux Density (Tesla): 0.496216
Stator-Teeth By-Pass Factor: 0.00456525
Stator-Yoke By-Pass Factor: 9.5239e-06
Rotor-Yoke By-Pass Factor: 0.0114639
Stator-Teeth Ampere Turns (A.T): 36.882
Stator-Yoke Ampere Turns (A.T): 0.059955
Rotor-Yoke Ampere Turns (A.T): 1848.21
Air-Gap Ampere Turns (A.T): 266.406
Magnet Ampere Turns (A.T): -2151.15
Armature Reactive Ampere Turns
at Start Operation (A.T): 61328
Leakage-Flux Factor: 1
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.767021
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.668515
No-Load Speed (rpm): 11168
Cogging Torque (N.m): 0.0850176
FULL-LOAD DATA
Average Input Current (A): 28.925
Root-Mean-Square Armature Current (A): 35.8317
Armature Thermal Load (A^2/mm^3): 3280.18
Specific Electric Loading (A/mm): 138.045
Armature Current Density (A/mm^2): 23.7616
Frictional and Windage Loss (W): 0
Iron-Core Loss (W): 0.00431668
Armature Copper Loss (W): 1616.54
Transistor Loss (W): 0
Diode Loss (W): 0
Total Loss (W): 1616.54
Output Power (W): 21523.5
Input Power (W): 23140
Efficiency (%): 93.0141
Rated Speed (rpm): 4800
Rated Torque (N.m): 42.8196
Locked-Rotor Torque (N.m): 1276.98
Locked-Rotor Current (A): 2854.01
WINDING ARRANGEMENT
The 3-phase, 1-layer winding can be arranged in 18 slots as below:
ABYBCZCAXAXYBYZCZX
PhaseA average coil pitch is: 1
PhaseB average coil pitch is: 3.33333
PhaseC average coil pitch is: 3.33333
Angle per slot (elec. degrees): 160
Phase-A axis (elec. degrees): 100
First slot center (elec. degrees): 0
TRANSIENT FEA INPUT DATA
For Armature Winding:
Number of Turns: 300
Parallel Branches: 1
Terminal Resistance (ohm): 0.41969
End Leakage Inductance (H): 0.000192684
2D Equivalent Value:
Equivalent Model Depth (mm): 29.74
Equivalent Stator Stacking Factor: 0.95
Equivalent Rotor Stacking Factor: 0.981944
Equivalent Br (Tesla): 1.27653
Equivalent Hc (kA/m): 899
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