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本帖最后由 lanjeo 于 2015-4-29 10:02 编辑
调速永磁同步电机:设计如下,但是设计数据和测试数据相差甚远,设计时额定电压为360V但是实际测试出来后发现达到额定负载时,电压达到了440V奇怪,这是个相当难度的问题,不知道有哪位兄弟可以帮回答一下原因?电流的数据基本吻合!所用软件ansoft maxell 5.0。
ADJUSTABLE-SPEED PERMANENT MAGNET SYNCHRONOUS MOTOR DESIGN
GENERAL DATA
Rated Output Power (kW): 33.4
Rated Voltage (V): 360
Number of Poles: 24
Frequency (Hz): 42.4
Friction and Wind Loss (W): 1200
Rotor Position: Inner
Type of Circuit: Y3
Type of Source: Sine
Domain: Frequency
Operating Temperature (C): 75
STATOR DATA
Number of Stator Slots: 54
Outer Diameter of Stator (mm): 480
Inner Diameter of Stator (mm): 340
Type of Stator Slot: 3
Dimension of Stator Slot
hs0 (mm): 1
hs1 (mm): 2
hs2 (mm): 50
bs0 (mm): 4
bs1 (mm): 11.2
bs2 (mm): 16.9
rs (mm): 2
Top Tooth Width (mm): 8.92946
Bottom Tooth Width (mm): 9.04723
Skew Width (Number of Slots): 1
Length of Stator Core (mm): 210
Stacking Factor of Stator Core: 0.95
Type of Steel: DW540-50
Slot Insulation Thickness (mm): 0.3
End Length Adjustment (mm): 1
Number of Parallel Branches: 3
Number of Conductors per Slot: 68
Type of Coils: 21
Average Coil Pitch: 2
Number of Wires per Conductor: 8
Wire Diameter (mm): 0.919069
Wire Wrap Thickness (mm): 0.06
Stator Slot Fill Factor (%): 75.5311
Coil Half-Turn Length (mm): 280.766
ROTOR DATA
Minimum Air Gap (mm): 1
Inner Diameter (mm): 280
Length of Rotor (mm): 210
Stacking Factor of Iron Core: 0.95
Type of Steel: zhutie
Polar Arc Radius (mm): 169
Mechanical Pole Embrace: 0.86
Electrical Pole Embrace: 0.862778
Max. Thickness of Magnet (mm): 5
Width of Magnet (mm): 37.9696
Type of Magnet: n35sh
Type of Rotor: 2
PERMANENT MAGNET DATA
Residual Flux Density (Tesla): 1.19
Coercive Force (kA/m): 876
Maximum Energy Density (kJ/m^3): 275
Relative Recoil Permeability: 1
Demagnetized Flux Density (Tesla): 7.26318e-005
Recoil Residual Flux Density (Tesla): 1.10079
Recoil Coercive Force (kA/m): 876.01
MATERIAL CONSUMPTION
Armature Copper Density (kg/m^3): 8900
Permanent Magnet Density (kg/m^3): 7800
Armature Core Steel Density (kg/m^3): 7750
Rotor Core Steel Density (kg/m^3): 7350
Armature Copper Weight (kg): 48.6982
Permanent Magnet Weight (kg): 7.47958
Armature Core Steel Weight (kg): 76.4704
Rotor Core Steel Weight (kg): 33.6097
Total Net Weight (kg): 166.258
Armature Core Steel Consumption (kg): 360.694
Rotor Core Steel Consumption (kg): 160.652
STEADY STATE PARAMETERS
Stator Winding Factor: 0.945214
D-Axis Reactive Reactance Xad (ohm): 0.954227
Q-Axis Reactive Reactance Xaq (ohm): 0.954227
D-Axis Reactance X1+Xad (ohm): 2.49987
Q-Axis Reactance X1+Xaq (ohm): 2.49987
Armature Leakage Reactance X1 (ohm): 1.54564
Zero-Sequence Reactance X0 (ohm): 1.21658
Armature Phase Resistance R1 (ohm): 0.156123
NO-LOAD MAGNETIC DATA
Stator-Teeth Flux Density (Tesla): 1.81891
Stator-Yoke Flux Density (Tesla): 1.01069
Rotor-Yoke Flux Density (Tesla): 0.659754
Air-Gap Flux Density (Tesla): 0.776093
Magnet Flux Density (Tesla): 0.792338
Stator-Teeth Ampere Turns (A.T): 522.902
Stator-Yoke Ampere Turns (A.T): 2.86278
Rotor-Yoke Ampere Turns (A.T): 4.15763
Air-Gap Ampere Turns (A.T): 697.07
Magnet Ampere Turns (A.T): -1227.34
Leakage-Flux Factor: 1
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.679825
Correction Factor for Magnetic
Circuit Length of Roor Yoke: 0.592696
No-Load Line Current (A): 18.3175
No-Load Input Power (W): 1624.62
Cogging Torque (N.m): 3.63061e-011
FULL-LOAD DATA
Maximum Line Induced Voltage (V): 469.541
Root-Mean-Square Line Current (A): 71.0219
Root-Mean-Square Phase Current (A): 71.0219
Armature Thermal Load (A^2/mm^3): 363.02
Specific Electric Loading (A/mm): 81.3835
Armature Current Density (A/mm^2): 4.46061
Friction and Wind Loss (W): 1200
Iron-Core Loss (W): 266.439
Armature Copper Loss (W): 2362.46
Total Loss (W): 3828.9
Output Power (W): 33404.5
Input Power (W): 37233.4
Efficiency (%): 89.7165
Synchronous Speed (rpm): 212
Rated Torque (N.m): 1504.67
Torque Angle (degree): 47.7041
Maximum Output Power (W): 43583.7
WINDING ARRANGEMENT
The 3-phase, 2-layer winding can be arranged in 9 slots as below:
AZBCYABXC
Angle per slot (elec. degrees): 80
Phase-A axis (elec. degrees): 100
First slot center (elec. degrees): 0
TRANSIENT FEA INPUT DATA
For Armature Winding:
Number of Turns: 612
Parallel Branches: 3
Terminal Resistance (ohm): 0.156123
End Leakage Inductance (H): 7.9911e-005
2D Equivalent Value:
Equivalent Air-Gap Length (mm): 210
Equivalent Stator Stacking Factor: 0.95
Equivalent Rotor Stacking Factor: 0.95
Equivalent Br (Tesla): 1.10079
Equivalent Hc (kA/m): 876.01
Estimated Rotor Inertial Moment (kg m^2): 2.09885
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