STATOR USED IN RESOLVERS, AND RESOLVER INCLUDING SAME
The embodiments relate to a stator used in resolvers, in which multiple slots are formed at constant intervals in the circumferential direction and have an excitation coil, a first output coil, and a second output coil are respectively wound around the multiple slots. The excitation coil is wound by a number of windings that is changed on the basis of a sinusoidal wave in accordance with the order of the multiple slots in the circumferential direction. After the first output coil is wound by a number of windings resulting from the division of the total number of windings by a constant ratio, the second output coil is wound, and then the rest of the first output coil is wound.
1 . A stator used in resolvers, in which multiple slots are formed at constant intervals in a circumferential direction and have an excitation coil, a first output coil, and a second output coil, respectively, wound therearound, wherein the first output coil is wound at the same number of windings in accordance with an order of multiple slots in a circumferential direction by alternating the winding direction by two slots,
the second output coil is wound at the same number of windings in accordance with an order of multiple slots in a circumferential direction by alternating the winding direction by two slots,
the excitation coil is wound by the number of windings that is changed in a sinusoidal wave form in accordance with the order of the multiple slots in the circumferential direction by a method of alternating the winding direction by at least two slots.
2 . The stator used in resolvers of claim 1 , wherein the first output coil and the second output coil have a phase difference of 90°.
3 . The stator used in resolvers of claim 1 , wherein the total number of turns of the first output coil or the second output coil is not less than two times or not more than three times the total number of turns of the excitation coil.
4 . The stator used in resolvers of claim 1 , wherein at least 20 slots are provided.
5 . A resolver including the stator used in resolvers of claim 1 .