poles 31 (namely, axial double angle) of the detecting rotor 3 is N (N is an integer equal to or greater than 1)_; the respective numbers of turns in the first output winding 23 and the second output winding 24 on each tooth 27 are wsin, i and wooa, i (i is 1, 2, ... 2M) ; and the respective maximum numbers of turns in the first output winding 23 and the second output winding 24 per tooth 27 are wmax. In this case, each of double signs in Expression (1) to Expression (6) is in the same order.
[0034] It is found from Expression (1) to Expression (6) that the first output windings (COS windings} 23 and the second output windings (SIN windings) 24 are alternately wound, with one phase at a time, around the respective teeth 27, and the number of turns

WE CLAIM: [Claim 1] A rotation angle detector, comprising:
a detecting stator (2) comprising a detecting stator core (21), and a plurality of excitation windings (22) , a first output winding (23), and a second output winding (24) that are each provided on the detecting stator core (21); and
a detecting rotor (3) comprising a plurality of salient poles (31) arrayed in a circumferential direction, and being rotatable with respect to the detecting stator (2) , while each of the plurality of salient poles (31) is opposed to the detecting stator (2) in a radial direction, wherein:
the first output winding (23) and the second output winding (24) comprise output windings with mutually different phases;
the detecting stator core (21) comprises a plurality of teeth (27) arrayed in the circumferential direction;
each of the plurality of excitation windings (22) is wound around each of the plurality of teeth (27);
the first output winding (23) and the second output winding
(24) are wound around the teeth (27) different from each other,
while avoiding winding of the output windings with the same phase
around two of the plurality of teeth (27) which are adjacent to
each other in the circumferential direction;
a number of pole pairs of the plurality of excitation windings

(22) is M that is an integer equal to or greater than 1;
a number of the plurality of salient poles (31) is N that is an integer equal to or greater than 1;
a spatial distribution of a number of turns in each of the first output winding (23) and the second output winding (24) is obtained by a function represented by a sum of a function represented by a sine wave of a spatial order | M±N! , and a function represented by a sine wave of a spatial order |M-IM±NI| having an amplitude equal to an amplitude of the sine wave of the spatial order | M±N | ; and
an error spatial order 5 represented by I M- | M±N | | and an error spatial ordeal e represented by j5-M| are values other than 1 and 2.
[Claim 2]
A rotation angle detector, comprising: a detecting stator (2) comprising a detecting stator core (21), and a plurality of excitation windings (22) , a first output winding (23), and a second output winding (24) that are each provided on the detecting stator core (21); and
a detecting rotor (3) comprising a plurality of salient poles (31) arrayed in a circumferential direction, and being rotatable with respect to the detecting stator (2) , while each of the plurality of salient poles (31) is opposed to the detecting stator (2) in

a radial direction, wherein:
the first output winding (23) and the second output winding (24) comprise output windings with mutually different phases;
the detecting stator core (21) comprises a plurality of teeth (27) arrayed in the circumferential direction;
each of the plurality of excitation windings (22) is wound around each of the plurality of teeth (27);
the first output winding (23) and the second output winding (24) are wound around the teeth (27) different from each other, while avoiding winding of the output windings with the same phase around two of the plurality of teeth (27) which are adjacent to each other in the circumferential direction;
a number of pole pairs of the plurality of excitation windings (22) is M that is an integer equal to or greater than 1;
a number of the plurality of salient poles (31) is N that is an integer equal to or greater than 1;
a spatial distribution of a number of turns in each of the first output winding and the second output winding is obtained by a function represented by a sine wave of a spatial order |M±Nj;
an error spatial order 5 represented by | M- | M±N | | and an error spatial order e represented by |5-M| are values other than 1 and 2;
the number M of pole pairs of the plurality of excitation windings (22) is 9~; and

the number N of the plurality of salient poles (31) is any one of 15, 24, and 30.
[Claim 3]
A rotation angle detector, comprising: a detecting stator (2) comprising a detecting stator core (21), and a plurality of excitation windings (22) , a first output winding (23), and a second output winding (24) that are each provided on the detecting stator core (21); and
a detecting rotor (3) comprising a plurality of salient poles (31) arrayed in a circumferential direction, and being rotatable with respect to the detecting stator (2) , while each of the plurality of salient poles (31) is opposed to the detecting stator (2) in a radial direction, wherein:
the first output winding (23) and the second output winding (24) comprise output windings with mutually different phases;
the detecting stator core (21) comprises a plurality of teeth (27) arrayed in the circumferential direction;
each of the plurality of excitation windings (22) is wound around each of the plurality of teeth (27);
the first output winding (23) and the second output winding (24) are wound around the teeth (27) different from each other, while avoiding winding of the output windings with the same phase around two of the plurality of teeth (27) which are adjacent to

each other in the circumferential direction;
a number of pole pairs of the plurality of excitation windings (22) is M that is an integer equal to or greater than 1;
a number of the plurality of salient poles (31) is N that is an integer equal to or greater than 1;
a spatial distribution of a number of turns in each of the first output winding and the second output winding is obtained by a function represented by a sine wave of a spatial order |M±N|;
an error spatial order 5 represented by | M- !M±N | | and an error spatial order e represented by |5-M| are values other than 1 and 2;
the number M of pole pairs of the plurality of excitation
windings (22) is 15; and
the number N of the plurality of salient poles (31) is any one of 10, 20, and 24.
[Claim 4] A rotation angle detector according to claim 1 any one of claims 1 to 3, wherein the error spatial order 5 and the error spatial order e are further values other than 4.
[Claim 5] A rotation angle detector according to any one of claims 1 to 4, wherein, on a common tooth having the excitation winding (22) and the output winding (23,24) wound therearound, one of the excitation winding (22) and the output winding (23,24) is provided

in a position closer to the detecting rotor (3) than another one of the excitation winding (22) and the output winding (23,24) is in the radial direction.
[Claim 6] A rotation angle detector according to any one of claims 1 to 4, wherein:
the detecting stator (2) further comprises an insulating body
(25) interposed between the each of the plurality of teeth (27) and each of the plurality of excitation windings (22} and the output windings (23,24); and
the insulating body (25) comprises a partition part (25d) configured to partition between the each of the plurality of excitation windings (22) and each of the output windings (23,24) in the radial direction.
[Claim 7] A rotation angle detector according to any one of claims 1 to 4, wherein:
the detecting stator (2) further comprises an insulating body (25) interposed between the each of the plurality of teeth (27) and each of the plurality of excitation windings (22) and the output winding (23,24);
the each of the plurality of excitation windings (22) is provided only in part of a range of corresponding one of the output windings (23,24) in the radial direction;

each of the output windings (23,24) is wound around corresponding one of the plurality of teeth (27) while covering an outer periphery of corresponding one of the plurality of excitation windings (22); and
the insulating body (25) has formed therein a recess (41) into which the corresponding one of the plurality of excitation windings (22) is to be fitted.
[Claim 8] A rotation angle detector according to any one of claims 1 to 7, wherein respective positions of a plurality of the first output windings (23) with mutually different numbers of turns are different from each other in the radial direction.
[Claim 9] A rotation angle detector according to claim 8, wherein the respective positions of the plurality of the first output windings (23) with mutually different numbers of turns are different from each other in the radial direction by adjusting the position of the first output winding (23) with a smallest number of turns.
[Claim 10] A rotation angle detector according to any one of claims 1 to 9, wherein, the plurality of teeth (27} comprise a tooth (27) prevented from having the first output winding (23) and the second output winding (24) wound therearound.

[Claim 11] A rotating electrical machine, comprising:
a stator (102);
a rotor (103) to be rotated with respect to the stator (102) ; and
the rotation angle detector of any one of claims 1 to 10 in which the detecting rotor (3) is rotated integrally with the rotor (103).
[Claim 12] An elevator hoisting machine, comprising:
a motor (171) comprising the rotating electrical machine of claim 11, and a drive sheave (172) to be rotated by drive force of the motor (171) .