What is claimed is:
2. The motor of claim 1 wherein the shared auxiliary winding comprises a 4-pole auxiliary winding phase shifted at least one slot less than a 90 degree shift with respect to the phase of the shared main winding when energized in the four pole configuration.
3. The motor of claim 2 further comprising a single capacitor connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 2-pole configuration and connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 4-pole configuration.
4. The motor of claim 2 wherein the stator core has 36 slots and wherein the shared auxiliary winding has a phase shift of about 125 degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration and wherein the shared auxiliary winding has a phase shift of about 70 degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration.
5. The motor of claim 1 wherein the shared auxiliary winding has a phase shift which is not 90 degrees with respect to the phase of the shared main winding when energized in either of the first or second pole configurations.
6. The motor of claim 1 wherein the shared auxiliary winding has a phase shift of about X degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration, wherein the shared auxiliary winding has a phase shift of about Y degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration, and wherein X and Y are made to be as close as possible to about 90-105 degrees.
7. A motor having a 2-pole configuration and a 4-pole configuration comprising:
8. The motor of claim 7 wherein the shared auxiliary winding comprises a 4-pole auxiliary winding phase shifted at least one slot less than a 90 degree shift with respect to the phase of the shared main winding when energized in the four pole configuration.
9. The motor of claim 8 further comprising a single capacitor connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 2-pole configuration and connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 4-pole configuration.
10. The motor of claim 8 wherein the shared auxiliary winding has a phase shift of about 125 degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration and wherein the shared auxiliary winding has a phase shift of about 70 degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration.
11. The motor of claim 7 wherein the shared auxiliary winding has a phase shift which is not 90 degrees with respect to the phase of the shared main winding when energized in either of the first or second pole configurations.
12. The motor of claim 7 wherein the shared auxiliary winding has a phase shift of about X degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration, wherein the shared auxiliary winding has a phase shift of about Y degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration, and wherein X and Y are about 70-125 degrees.
13. A method of making a motor comprising the steps of:
14. The method of claim 13 wherein the shared main winding comprises a 2-pole main winding when energized in a first configuration and further comprises a 4-pole main winding when energized in a second configuration, and wherein the shared auxiliary winding is phase shifted at least one slot less than a 90 degree shift with respect to the phase of the shared main winding when energized in the 4-pole configuration.
15. The method of claim 14 further comprising the steps of connecting a single capacitor in series with the shared auxiliary winding so that it is energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 2-pole configuration and connecting the capacitor in series with the shared auxiliary winding so that it is energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 4-pole configuration.
16. The method of claim 14 wherein the shared auxiliary winding has a phase shift of about 125 degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration and wherein the shared auxiliary winding has a phase shift of about 70 degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration.
17. The method of claim 14 wherein the shared auxiliary winding has a phase shift which is not 90 degrees with respect to the phase of the shared main winding when energized in either of the 2 or 4-pole configurations.
18. The method of claim 14 wherein the shared auxiliary winding has a phase shift of about X degrees with respect to the phase of the shared main winding when energized in a 2-pole configuration, wherein the shared auxiliary winding has a phase shift of about Y degrees with respect to the phase of the shared main winding when energized in a 4-pole configuration, and further comprising the step of making X and Y to be about 70-125 degrees.
- Tooth the same as Figure I-A. Figure I-C is an (8) pole, (18) slot motor with (3) phases and a (2) slot coil winding pitch. Figure I-D is a common brushless configuration for (3) phase motors with (4) poles, (12) slots and a (3) slot coil winding pitch. Figures I-E and I-F are brushless designs with (6) pole.
- Number of slots. Moreover high winding factor is achieved when the relation ”pole number slots 1 or slots 2 ” is verified. It is due to the almost opposite distribution of every two successive slots phasors in the electrical space 10. TABLE I WINDING FACTOR CALCULATIONS Poles Slots 4 6 8 10 12 14 16.
Winding Data Calculation for mixed (single/double layer) 4 pole winding in 72 slots - with excellent parameters. 4/2 pole single-phase winding Design of two-speed (4/2 pole) single-phase winding (single winding for two speeds) in 24 slots suitable for two-speed polishing motors.
Full text of 'example calculation for 48 slots. No n Internal diameter: 220 mm External diameter: 335 mm I Total slot depth: 36 mm Length: 238 mm Back iron: 21,5 mm Teeth width 'a': 7 mm Teeth width 'b': 7 mm Number od air vents: 0 Air vent width: 0 mm Rotor: squirrel cage bl = b2 = h = Ins. Thickness: Total slot area: 8 mm 10 mm 27 mm. Sep 21, 2013 The winding of a 4-pole alternator having 36 slots and a coil span of 1 to 8 is short-pitched. 40 Explanatory answer. ELECTRICAL MACHINES II Lecturer: Dr. Suad Ibrahim Shahl. Introduction to AC Machine. A 3-phase winding with 36 slots and 4 poles is an integral slot. The coil span generally varies from 2/3 pole pitch to full pole pitch.
1. A motor comprising: a stator core;
a rotor in rotational relationship with the stator core;
a shared main winding on the core having 2-pole and 4-pole configurations;
a shared auxiliary winding on the core having 2-pole and 4-pole configurations; and
a switching circuit for selectively simultaneously energizing the shared main winding and the shared auxiliary winding in the 2-pole and 4-pole configurations.
2. The motor of claim 1 wherein the shared auxiliary winding comprises a 4-pole auxiliary winding phase shifted at least one slot less than a 90 degree shift with respect to the phase of the shared main winding when energized in the four pole configuration.
3. The motor of claim 2 further comprising a single capacitor connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 2-pole configuration and connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 4-pole configuration.
4. The motor of claim 2 wherein the stator core has 36 slots and wherein the shared auxiliary winding has a phase shift of about 125 degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration and wherein the shared auxiliary winding has a phase shift of about 70 degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration.
5. The motor of claim 1 wherein the shared auxiliary winding has a phase shift which is not 90 degrees with respect to the phase of the shared main winding when energized in either of the first or second pole configurations.
6. The motor of claim 1 wherein the shared auxiliary winding has a phase shift of about X degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration, wherein the shared auxiliary winding has a phase shift of about Y degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration, and wherein X and Y are made to be as close as possible to about 90-105 degrees.
7. A motor having a 2-pole configuration and a 4-pole configuration comprising:
36 Slot 2 Pole Winding Diagram
a stator core;
a rotor in rotational relationship with the stator core;
a shared main winding on the core which, when energized in the 2-pole configuration, generates a first main magnetic field and which, when energized in the 4-pole configuration generates a second main magnetic field different from the first main magnetic field;
a shared auxiliary winding on the core which, when energized in combination with the shared main winding in the 2-pole configuration, generates a first auxiliary magnetic field and which, when energized in the 4-pole configuration, generates a second auxiliary magnetic field different from the first auxiliary magnetic field; and
a switching circuit for selectively simultaneously energizing the shared main winding and the shared auxiliary winding in the 2-pole configuration and for selectively simultaneously energizing the shared main winding and the shared auxiliary winding in the 4-pole configuration.
8. The motor of claim 7 wherein the shared auxiliary winding comprises a 4-pole auxiliary winding phase shifted at least one slot less than a 90 degree shift with respect to the phase of the shared main winding when energized in the four pole configuration.
9. The motor of claim 8 further comprising a single capacitor connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 2-pole configuration and connected in series with the shared auxiliary winding and energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 4-pole configuration.
10. The motor of claim 8 wherein the shared auxiliary winding has a phase shift of about 125 degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration and wherein the shared auxiliary winding has a phase shift of about 70 degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration.
11. The motor of claim 7 wherein the shared auxiliary winding has a phase shift which is not 90 degrees with respect to the phase of the shared main winding when energized in either of the first or second pole configurations.
12. The motor of claim 7 wherein the shared auxiliary winding has a phase shift of about X degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration, wherein the shared auxiliary winding has a phase shift of about Y degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration, and wherein X and Y are about 70-125 degrees.
36 Slot 2 Pole Winding Pdf
13. A method of making a motor comprising the steps of:
providing a stator core;
providing a rotor in rotational relationship with the stator core;
winding a shared main winding on the core having multiple pole configurations; and
winding a shared auxiliary winding on the core having multiple pole configurations.
14. The method of claim 13 wherein the shared main winding comprises a 2-pole main winding when energized in a first configuration and further comprises a 4-pole main winding when energized in a second configuration, and wherein the shared auxiliary winding is phase shifted at least one slot less than a 90 degree shift with respect to the phase of the shared main winding when energized in the 4-pole configuration.
15. The method of claim 14 further comprising the steps of connecting a single capacitor in series with the shared auxiliary winding so that it is energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 2-pole configuration and connecting the capacitor in series with the shared auxiliary winding so that it is energized with the shared auxiliary winding when the shared auxiliary winding is energized with the shared main winding in the 4-pole configuration.
16. The method of claim 14 wherein the shared auxiliary winding has a phase shift of about 125 degrees with respect to the phase of the shared main winding when energized in the 2-pole configuration and wherein the shared auxiliary winding has a phase shift of about 70 degrees with respect to the phase of the shared main winding when energized in the 4-pole configuration.
17. The method of claim 14 wherein the shared auxiliary winding has a phase shift which is not 90 degrees with respect to the phase of the shared main winding when energized in either of the 2 or 4-pole configurations.
18. The method of claim 14 wherein the shared auxiliary winding has a phase shift of about X degrees with respect to the phase of the shared main winding when energized in a 2-pole configuration, wherein the shared auxiliary winding has a phase shift of about Y degrees with respect to the phase of the shared main winding when energized in a 4-pole configuration, and further comprising the step of making X and Y to be about 70-125 degrees.