| 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; 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 + 2.002for0.572 < 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 < 2.500 0.229 * S + 7.794for1.349 < S < 1.970 7.607 * S − 2.160for0.723 < S < 1.34911.430 * S − 4.924for0.572 < S < 0.723 Set A2:Post Height > −1.340 * S + 2.305for0.619 < S < 1.120 1.100 * S − 0.429for1.120 < S < 2.074 3.830 * S − 6.082for2.074 < S < 2.269Post Height <−69.510 * S + 160.318for2.222 < S < 2.269 −3.430 * S + 13.492for1.667 < S < 2.222 2.830 * S + 3.056for1.133 < S < 1.667 8.650 * S − 3.545for0.619 < S < 1.133 Set A3:Post Height > −4.160 * S + 5.032for0.723 < S < 0.967 0.839 * S + 0.198for0.967 < S < 1.692 2.713 * S − 2.973for1.692 < S < 1.939Post Height <−53.233 * S + 105.506for1.879 < S < 1.939 −1.406 * S + 8.122for1.465 < S < 1.879 3.898 * S + 0.353for1.035 < S < 1.465 7.535 * 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 + 0.462for0.319 < S < 3.667 2.665 * S + −8.380for3.667 < S < 5.000Post Height <−18.282 * S + 96.357for4.500 < S < 5.000 −4.663 * S + 35.071for2.738 < S < 4.500 2.585 * S + 15.227for1.447 < S < 2.738 16.013 * S − 4.204for0.319 < S < 1.447Set B2:Post Height > 0.269 * S + 0.456for0.380 < S < 3.016 3.051 * S − 7.936for3.016 < S < 4.167Post Height <−14.766 * S + 66.309for3.667 < S < 4.167 −3.952 * S + 26.654for2.315 < S < 3.667 3.108 * S + 10.310for1.278 < S < 2.315 14.542 * S − 4.303for0.389 < S < 1.278 88.444 * S − 33.051for0.380 < S < 0.389Set B3:Post Height > 0.191 * S + 0.626for0.472 < S < 2.181 2.135 * S − 3.613for2.181 < S < 3.09553.475 * 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 − 2.706for0.572 < 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 < 4.000 21.749 * S − 4.633for0.233 < S < 1.793Set 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 < 3.333 20.788 * S − 4.395for0.251 < S < 1.520161.000 * S − 39.588for0.250 < S < 0.251Set C3:Post Height > 0.277 * S + 0.591for0.278 < S < 4.425 1.916 * 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 < 3.175 18.321 * S − 4.260for0.278 < 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 + 347.445for8.889 < S < 9.444 −5.777 * S + 77.062for4.833 < S < 8.889 1.950 * S + 39.718for2.222 < S < 4.833 20.301 * S + −1.058for0.389 < S < 2.222 34.481 * S + −6.574for0.208 < S < 0.389Set 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 < 1.793Set D3:Post Height > 0.212 * S + 0.600for0.264 < S < 4.833 3.017 * S + −12.960for4.833 < S < 6.667Post Height <−12.356 * S + 89.531for5.556 < S < 6.667 −4.551 * S + 46.170for3.175 < S < 5.556 3.850 * S + 19.496for1.502 < S < 3.175 19.751 * S + −4.387for0.264 < S < 1.502 |
