| 摘要 |
An electric machine comprise a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level. |
| 主权项 |
1. An electric machine, comprising:
a first carrier having an array of electromagnetic elements; a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier; an airgap between the first carrier and the second carrier; the electromagnetic elements of the first carrier including posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm; the first carrier and the second carrier together defining a size of the electric machine and being arranged so that the electric machine is an axial flux or radial flux machine; the magnetic poles having a pole pitch S in mm; the size of the motor, pole pitch and post height being selected to fall within a region in a space defined by size, pole pitch and post height, the region being defined by either 1) a first union of:
a) a first surface defined by a first set of inequalities for a first size of electric machine;b) a second surface defined by a second set of inequalities for a second size of electric machine; andc) a set defined as containing all points lying on line segments having a first end point on the first surface and a second end point on the second surface;the first set of inequalities and the second set of inequalities being respectively sets of inequalities A and B, or B and C, or C and D, in which the group of inequalities A is for a size of 25 mm, the group of inequalities B is for a size of 50 mm, the group of inequalities C is for a size of 100 mm, the group of inequalities D is for a size of 200 mm; or
2) a second union of a surface as defined by set of inequalities D and a corresponding set of all points with size greater than the surface but with pole pitch and post height corresponding to points within the surface; where A is selected from the group of sets of inequalities consisting of: Set A1:Post Height>−1.070*S + 2.002 for0.572 < S < 1.189 1.175*S + −0.667for1.189 < S < 2.26913.502*S − 28.637for2.269 < S < 2.500Post Height<−5.898*S + 19.863for1.970 < S < 2.5000.229*S + 7.794for1.349 < S < 1.9707.607*S − 2.160for0.723 < S < 1.34911.430*S − 4.924 for0.572 < S < 0.723 Set A2:Post Height>−1.340*S + 2.305 for0.619 < S < 1.1201.100*S − 0.429for1.120 < S < 2.0743.830*S − 6.082for2.074 < S < 2.269Post Height<−69.510*S + 160.318for2.222 < S < 2.269−3.430*S + 13.492for1.667 < S < 2.2222.830*S + 3.056for1.133 < S < 1.6678.650*S − 3.545for0.619 < S < 1.133 Set A3:Post Height>−4.160*S + 5.032 for0.723 < S < 0.9670.839*S + 0.198for0.967 < S < 1.6922.713*S − 2.973for1.692 < S < 1.939Post Height<−53.233*S + 105.506for1.879 < S < 1.939−1.406*S + 8.122 for1.465 < S < 1.8793.898*S + 0.353for1.035 < S < 1.4657.535*S − 3.412for0.723 < S < 1.035 B is selected from the group of sets of inequalities consisting of: Set B1:Post Height>0.254*S + 0.462 for0.319 < S < 3.6672.665*S + −8.380 for3.667 < S < 5.000Post Height<−18.282*S + 96.357 for4.500 < S < 5.000−4.663*S + 35.071 for2.738 < S < 4.5002.585*S + 15.227 for1.447 < S < 2.73816.013*S − 4.204 for0.319 < S < 1.447 Set B2:Post Height>0.269*S + 0.456for0.380 < S < 3.0163.051*S − 7.936for3.016 < S < 4.167Post Height<−14.766*S + 66.309 for3.667 < S < 4.167−3.952*S + 26.654for2.315 < S < 3.667 3.108*S + 10.310for1.278 < S < 2.31514.542*S − 4.303 for0.389 < S < 1.27888.444*S − 33.051for0.380 < S < 0.389 Set B3:Post Height>0.191*S + 0.626for0.472 < S < 2.1812.135*S − 3.613for2.181 < S < 3.095 53.475*S − 162.511for3.095 < S < 3.175Post Height<−5.095*S + 23.450for2.222 < S < 3.175 0.805*S + 10.339for1.381 < S < 2.22210.251*S − 2.706 for0.572 < S < 1.38124.420*S − 10.810for0.472 < S < 0.572 C is selected from the group of sets of inequalities consisting of: Set C1:Post Height>0.322*S + 0.359for0.233 < S < 6.667 2.202*S − 12.179for6.667 < S < 8.333Post Height<−25.555*S + 219.122for7.778 < S < 8.333−5.585*S + 63.794for4.000 < S < 7.778 3.214*S + 28.600for1.793 < S < 4.00021.749*S − 4.633 for0.233 < S < 1.793 Set C2:Post Height>0.277*S + 0.593for0.250 < S < 5.182 2.342*S − 10.111for5.182 < S < 7.222Post Height<−13.149*S + 101.763for6.111 < S < 7.222−4.885*S + 51.265for3.333 < S < 6.111 4.291*S + 20.680for1.520 < S < 3.33320.788*S − 4.395 for0.251 < S < 1.520161.000*S − 39.588 for0.250 < S < 0.251 Set C3:Post Height>0.277*S + 0.591for0.278 < S < 4.4251.916*S − 6.663for4.425 < S < 6.111Post Height<−21.337*S + 135.438for5.556 < S < 6.111−4.985*S + 44.588for3.175 < S < 5.556 2.749*S + 20.031for1.560 < S < 3.17518.321*S − 4.260 for0.278 < S < 1.560and
D is selected from the group of sets of inequalities consisting of: Set D1:Post Height> 0.257*S + 0.327for0.208 < S < 7.778 1.977*S − 13.044for7.778 < S < 9.444Post Height<−36.195 *S + 347.445 for8.889 < S < 9.444−5.777 *S + 77.062 for4.833 < S < 8.889 1.950 *S + 39.718for2.222 < S < 4.83320.301 *S + −1.058for0.389 < S < 2.22234.481 *S + −6.574for0.208 < S < 0.389 Set D2:Post Height>0.322 *S + 0.359for0.233 < S < 6.667 2.202 *S + −12.179for6.667 < S < 8.333Post Height<−25.555 *S + 219.122for7.778 < S < 8.333−5.585 *S + 63.794for4.000 < S < 7.778 3.214 *S + 28.600for1.793 < S < 4.000 21.749 *S + −4.633for0.233 < S < 1.793 Set D3:Post Height>0.212 *S + 0.600 for0.264 < S < 4.8333.017 *S + −12.960 for4.833 < S < 6.667Post Height<−12.356 *S + 89.531 for5.556 < S < 6.667−4.551 *S + 46.170 for3.175 < S < 5.5563.850 *S + 19.496 for1.502 < S < 3.17519.751 *S + −4.387 for0.264 < S < 1.502 |
