变频永磁同步电机（螺杆压缩机用）

永磁直线电机

刚开始做螺杆压缩机永磁同步电机，下面计算单是一台45kW、8极、3000rmp、功率系数1.2，效率需达到1级能效标准。我现在对计算单里面的计算数据是否合理弄不清楚（工程经验少）比如：齿磁密、反电势、电枢电密、热负荷等重要参数的值，希望大神指导指导。
DJUSTABLE-SPEED PERMANENT MAGNET SYNCHRONOUS MOTOR DESIGN

                      File: Setup1.res


     GENERAL DATA

Rated Output Power (kW):        45
Rated Voltage (V):        360
Number of Poles:        8
Frequency (Hz):        200
Frictional Loss (W):        300
Windage Loss (W):        0
Rotor Position:        Inner
Type of Circuit:        Y3
Type of Source:        Sine
Domain:        Time
Operating Temperature (C):        75


     STATOR DATA

Number of Stator Slots:        48
Outer Diameter of Stator (mm):          290
Inner Diameter of Stator (mm):          205

Type of Stator Slot:        2
Stator Slot       
            hs0 (mm):          0.8
            hs1 (mm):          0.8
            hs2 (mm):          23.9
            bs0 (mm):          3.5
            bs1 (mm):          6.32853
            bs2 (mm):          9.4615
Top Tooth Width (mm):          7.3
Bottom Tooth Width (mm):          7.3
Skew Width (Number of Slots):        0

Length of Stator Core (mm):          160
Stacking Factor of Stator Core:        0.95
Type of Steel:        B35AV1900
Slot Insulation Thickness (mm):          0.3
Layer Insulation Thickness (mm):          0
End Length Adjustment (mm):          7
Number of Parallel Branches:        4
Number of Conductors per Slot:        16
Type of Coils:        11
Average Coil Pitch:        5
Number of Wires per Conductor:        11
Wire Diameter (mm):          0.85
Wire Wrap Thickness (mm):          0.08
Slot Area (mm^2):        230.577
Net Slot Area (mm^2):        194.157
Limited Slot Fill Factor (%):        80
Stator Slot Fill Factor (%):        78.4016
Coil Half-Turn Length (mm):          286.31
Wire Resistivity (ohm.mm^2/m):        0.0217


     ROTOR DATA

Minimum Air Gap (mm):          0.8
Inner Diameter (mm):          70
Length of Rotor (mm):          160
Stacking Factor of Iron Core:        0.95
Type of Steel:        B35AV1900
Bridge (mm):          1.85
Rib (mm):          9
Mechanical Pole Embrace:        0.737086
Electrical Pole Embrace:        0.770195
Max. Thickness of Magnet (mm):          6
Width of Magnet (mm):          57
Type of Magnet:        N35UH_xiu
Type of Rotor:        5
Magnetic Shaft:        No


     PERMANENT MAGNET DATA

Residual Flux Density (Tesla):        1.03
Coercive Force (kA/m):        700
Maximum Energy Density (kJ/m^3):        180.25
Relative Recoil Permeability:        1.17096
Demagnetized Flux Density (Tesla):        0
Recoil Residual Flux Density (Tesla):        1.03
Recoil Coercive Force (kA/m):        700

     MATERIAL CONSUMPTION

Armature Wire Density (kg/m^3):          8900
Permanent Magnet Density (kg/m^3):          7600
Armature Core Steel Density (kg/m^3):          7700
Rotor Core Steel Density (kg/m^3):          7700

Armature Copper Weight (kg):          12.2154
Permanent Magnet Weight (kg):          3.32698
Armature Core Steel Weight (kg):          25.723
Rotor Core Steel Weight (kg):          29.9869
Total Net Weight (kg):          71.2523

Armature Core Steel Consumption (kg):          61.847
Rotor Core Steel Consumption (kg):          38.6306


     STEADY STATE PARAMETERS

Stator Winding Factor:        0.965926
D-Axis Reactive Reactance Xad (ohm):        0.574457
Q-Axis Reactive Reactance Xaq (ohm):        1.83725
D-Axis Reactance X1+Xad (ohm):        0.754408
Q-Axis Reactance X1+Xaq (ohm):        2.0172
Armature Leakage Reactance X1 (ohm):        0.179951
Zero-Sequence Reactance X0 (ohm):        0.179951
Armature Phase Resistance R1 (ohm):        0.0159256
Armature Phase Resistance at 20C (ohm):        0.0131001


     NO-LOAD MAGNETIC DATA

Stator-Teeth Flux Density (Tesla):        1.51212
Stator-Yoke Flux Density (Tesla):        1.64044
Rotor-Yoke Flux Density (Tesla):        0.340537
Air-Gap Flux Density (Tesla):        0.725474
Magnet Flux Density (Tesla):        0.874658

Stator-Teeth By-Pass Factor:        0.00104749
Stator-Yoke By-Pass Factor:        0.000161731
Rotor-Yoke By-Pass Factor:        7.30053e-006

Stator-Teeth Ampere Turns (A.T):        27.7998
Stator-Yoke Ampere Turns (A.T):        57.2688
Rotor-Yoke Ampere Turns (A.T):        0.762821
Air-Gap Ampere Turns (A.T):        547.465
Magnet Ampere Turns (A.T):        -633.435

Leakage-Flux Factor:        1.15565
Correction Factor for Magnetic
  Circuit Length of Stator Yoke:        0.296452
Correction Factor for Magnetic
  Circuit Length of Rotor Yoke:        0.756126

No-Load Line Current (A):        16.2879
No-Load Input Power (W):        807.467
Cogging Torque (N.m):        14.674


     FULL-LOAD DATA

Maximum Line Induced Voltage (V):        482.951
Root-Mean-Square Line Current (A):        73.2157
Root-Mean-Square Phase Current (A):        73.2157
Armature Thermal Load (A^2/mm^3):        64.0055
Specific Electric Loading (A/mm):        21.827
Armature Current Density (A/mm^2):        2.9324
Frictional and Windage Loss (W):        300
Iron-Core Loss (W):        495.374
Armature Copper Loss (W):        256.105
Total Loss (W):        1051.48
Output Power (W):        44991.4
Input Power (W):        46042.9
Efficiency (%):        97.7163

Synchronous Speed (rpm):        3000
Rated Torque (N.m):        143.212
Torque Angle (degree):        36.1856

Maximum Output Power (W):        185438
Torque Constant KT (Nm/A):        1.6256


     WINDING ARRANGEMENT

The 3-phase, 1-layer winding can be arranged in 12 slots as below:

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Angle per slot (elec. degrees):        30
Phase-A axis (elec. degrees):        105
First slot center (elec. degrees):        0



     TRANSIENT FEA INPUT DATA

For Armature Winding:
  Number of Turns:        128
  Parallel Branches:        4
  Terminal Resistance (ohm):        0.0159256
  End Leakage Inductance (H):        2.71948e-005
2D Equivalent Value:
  Equivalent Model Depth (mm):        160
  Equivalent Stator Stacking Factor:        0.95
  Equivalent Rotor Stacking Factor:        0.95
  Equivalent Br (Tesla):        1.03
  Equivalent Hc (kA/m):        700
Estimated Rotor Inertial Moment (kg m^2):        0.20971

永磁直线电机

大神给指导指导，这东西没老师带真的难摸啊！！

Nephology

Rotor-Yoke Flux Density (Tesla):0.340537  转子轭磁密有点底，Cogging Torque (N.m): 14.674相对于额定转矩143.212，齿槽转矩有点太大了。你这程序怎么连最重要的东西空载反电势都没有显示呢？

永磁直线电机

Nephology 发表于 2016-6-29 13:56
Rotor-Yoke Flux Density (Tesla):0.340537  转子轭磁密有点底，Cogging Torque (N.m): 14.674相对于额定 ...

就是ANSOFT V14的RM啊，FULL-LOAD反电动势是482V啊！您说的上面的转子轭磁密底，和齿槽转矩大怎么解决呢？需要调哪些参数

Nephology

永磁直线电机 发表于 2016-6-29 14:25
就是ANSOFT V14的RM啊，FULL-LOAD反电动势是482V啊！您说的上面的转子轭磁密底，和齿槽转矩大怎么解决呢 ...

我说的是空载反电势，你那个482V是满负载时的反电势。轭部磁密磁密太小了可以调节一下转子的内径，齿槽转矩太大了可以通过改变极弧系数，改变永磁体形状，改变定子斜槽虚拟槽等等

liys

“Maximum Line Induced Voltage (V):        482.951”， 字面上可以译成“最大线感应电压”，实际上是否就是空载反电势？因为是“Maximun”？请赐教。

土豆烧洋芋

除以1.414  你这个最大也就340 实际测试还会有偏差  设计值做到365左右

SR2007

楼主，我的设计表中也没有空载反电势这一个参数，请问应该在哪里找出呢？