关于小功率开关磁阻电机效率问题
请问各位高手,有做过80W,3000rpm的开关磁阻电机的么?有的话能不能告知一下,效率是多少 ,主要尺寸取多少合适,我用ansoft的Rm对电机进行过仿真,在定子外径限制在80mm,铁芯长也限制在80mm的情况下,效率一直无法超过80%,并且定子极磁密约为0.6T左右,为什么达不到1.6T呢??有什么办法或是我该朝着那个方向调整,能使我效率提高呢?后面是仿真的结果,求教SWITCHED RELUCTANCE MOTOR DESIGN
File: Setup1.res
GENERAL DATA
Rated Output Power (kW): 0.08
Rated Voltage (V): 10
Given Rated Speed (rpm): 3000
Frictional Loss (W): 3
Windage Loss (W): 0
Type of Load: Constant Torque
Type of Circuit: Full-Voltage
Lead Angle of Trigger in Elec. Degrees: 0
Trigger Pulse Width in Elec. Degrees: 111
Total Transistor Voltage Drop (V): 0
Total Diode Voltage Drop (V): 0
Operating Temperature (C): 75
STATOR CORE DATA
Number of Stator Poles: 8
Outer Diameter of Stator (mm): 80
Inner Diameter of Stator (mm): 45.8
Yoke Thickness (mm): 4.1
Pole Embrace: 0.466667
Length of Stator Core (mm): 75
Stacking Factor of Stator Core: 0.95
Type of Steel: DW360_50
STATOR COIL DATA
Slot Insulation Thickness (mm): 0.3
End Length Adjustment (mm): 0
Number of Parallel Branches: 1
Number of Turns per Pole: 14
Number of Wires per Conductor: 1
Wire Diameter (mm): 1.628
Wire Wrap Thickness (mm): 0.1
Slot Fill Factor (%): 47.1146
ROTOR CORE DATA
Number of Rotor Poles: 6
Length of Air Gap (mm): 0.4
Inner Diameter of Rotor (mm): 18
Yoke Thickness (mm): 4.5
Pole Embrace: 0.383333
Length of Rotor Core (mm): 75
Stacking Factor of Rotor Core: 0.95
Type of Steel: DW360_50
Magnetic Shaft: No
MATERIAL CONSUMPTION
Stator Copper Density (kg/m^3): 8900
Stator Core Steel Density (kg/m^3): 7650
Rotor Core Steel Density (kg/m^3): 7650
Stator Copper Weight (kg): 0.753019
Stator Core Steel Weight (kg): 1.00769
Rotor Core Steel Weight (kg): 0.440455
Total Net Weight (kg): 2.20116
Stator Core Steel Consumption (kg): 2.63613
Rotor Core Steel Consumption (kg): 0.878481
FULL-LOAD OPERATION DATA
Input DC Current (A): 11.3568
Phase RMS Current (A): 9.73706
Phase Current Density (A/mm^2): 4.67767
Frictional and Windage Loss (W): 3.16913
Iron-Core Loss (W): 6.70478
Winding Copper Loss (W): 20.0865
Diode Loss (W): 0
Transistor Loss (W): 0
Total Loss (W): 29.9604
Output Power (W): 83.6072
Input Power (W): 113.568
Efficiency (%): 73.6189
Rated Speed (rpm): 3169.13
Rated Torque (N.m): 0.251927
Flux Linkage (Wb): 0.00849181
Stator-Pole Flux Density (Tesla): 0.509987
Stator-Yoke Flux Density (Tesla): 0.519091
Rotor-Pole Flux Density (Tesla): 0.474449
Rotor-Yoke Flux Density (Tesla): 0.47295
Coil Length per Turn (mm): 181.455
Winding Resistance in Phase (ohm): 0.0529649
Winding Resistance at 20C (ohm): 0.0435679
Winding Leakage Inductance (mH): 0.0258428
Iron-Core-Loss Resistance (ohm): 29.5047
Frequency of Phase Current (Hz): 316.913
Maximum Output Power (W): 245.191
调整一下铁心长度和每极匝数试试 sunsson 发表于 2016-1-28 10:53
调整一下铁心长度和每极匝数试试
这个我都调过,效率总也上不去,并且按照《开关磁阻电机设计与应用》吴建华这本书,选取电磁负荷,初选电机转子外径,得出才不过30mm左右,我这外径都45了,但是30mm的我也仿真过,效率更低呀,怎么回事,望解答一番,谢谢,我qq:904297054,qq联系也好 磁密太低 开关磁阻电机要利用饱和才能提高效率 零点几的最大磁密不行的 cuixiupeng2521 发表于 2016-1-28 11:09
磁密太低 开关磁阻电机要利用饱和才能提高效率 零点几的最大磁密不行的
恩,确实应该是这样,但是我将外径改小后,仿真过,效率更低,我就不知道是什么原因了,下面是改小后的数据
SWITCHED RELUCTANCE MOTOR DESIGN
File: Setup1.res
GENERAL DATA
Rated Output Power (kW): 0.08
Rated Voltage (V): 10
Given Rated Speed (rpm): 3000
Frictional Loss (W): 3
Windage Loss (W): 0
Type of Load: Constant Torque
Type of Circuit: Full-Voltage
Lead Angle of Trigger in Elec. Degrees: 0
Trigger Pulse Width in Elec. Degrees: 111
Total Transistor Voltage Drop (V): 0
Total Diode Voltage Drop (V): 0
Operating Temperature (C): 75
STATOR CORE DATA
Number of Stator Poles: 8
Outer Diameter of Stator (mm): 60.3774
Inner Diameter of Stator (mm): 32.8
Yoke Thickness (mm): 2.98866
Pole Embrace: 0.466667
Length of Stator Core (mm): 65
Stacking Factor of Stator Core: 0.95
Type of Steel: DW360_50
STATOR COIL DATA
Slot Insulation Thickness (mm): 0.3
End Length Adjustment (mm): 0
Number of Parallel Branches: 1
Number of Turns per Pole: 14
Number of Wires per Conductor: 1
Wire Diameter (mm): 1.29
Wire Wrap Thickness (mm): 0.1
Slot Fill Factor (%): 49.6393
ROTOR CORE DATA
Number of Rotor Poles: 6
Length of Air Gap (mm): 0.4
Inner Diameter of Rotor (mm): 10.4202
Yoke Thickness (mm): 3.18989
Pole Embrace: 0.383333
Length of Rotor Core (mm): 65
Stacking Factor of Rotor Core: 0.95
Type of Steel: DW360_50
Magnetic Shaft: No
MATERIAL CONSUMPTION
Stator Copper Density (kg/m^3): 8900
Stator Core Steel Density (kg/m^3): 7650
Rotor Core Steel Density (kg/m^3): 7650
Stator Copper Weight (kg): 0.399821
Stator Core Steel Weight (kg): 0.49932
Rotor Core Steel Weight (kg): 0.203661
Total Net Weight (kg): 1.1028
Stator Core Steel Consumption (kg): 1.35214
Rotor Core Steel Consumption (kg): 0.387073
FULL-LOAD OPERATION DATA
Input DC Current (A): 13.8393
Phase RMS Current (A): 12.485
Phase Current Density (A/mm^2): 9.55257
Frictional and Windage Loss (W): 3.16258
Iron-Core Loss (W): 7.22538
Winding Copper Loss (W): 44.478
Diode Loss (W): 0
Transistor Loss (W): 0
Total Loss (W): 54.866
Output Power (W): 83.527
Input Power (W): 138.393
Efficiency (%): 60.3549
Rated Speed (rpm): 3162.58
Rated Torque (N.m): 0.252207
Flux Linkage (Wb): 0.00784597
Stator-Pole Flux Density (Tesla): 0.75918
Stator-Yoke Flux Density (Tesla): 0.75918
Rotor-Pole Flux Density (Tesla): 0.711289
Rotor-Yoke Flux Density (Tesla): 0.711289
Coil Length per Turn (mm): 153.447
Winding Resistance in Phase (ohm): 0.0713357
Winding Resistance at 20C (ohm): 0.0586793
Winding Leakage Inductance (mH): 0.0237435
Iron-Core-Loss Resistance (ohm): 24.4874
Frequency of Phase Current (Hz): 316.258
Maximum Output Power (W): 158.064 还有,我做过一个参数化计算,步长及参数的选取见下图
并联支路改为4 减小匝数 提前开通角你的电压太小了 或者发我帮你看下 q465108378
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