Multi-three phase winding with interchanged circuit sequence

Claim 2

In a dynamoelectric machine including a rotatable field element having at least two poles and a stationary polyphase armature winding, said armature winding comprising a top and a bottom layer of winding soil sides connected to form at least two phase belts per phase per pole pair, the coil sides of each phase belt being displaced by substantially 180* electrical degrees with respect to the corresponding coil sides of the other of said phase belts, at least one phase belt of each phase comprising parts of at least two parallel-connected circuits, each such parallel circuit comprising at least two coil sides in series connection, the coil sides of the top layer half of said phase belt having a first circuit sequence, and the coil sides of the bottom layer half having a transposed sequence, the average pitch of the coils in said phase belt being substantially greater than five-sixths, the resulting phases being connected to form at least two separate three-phase windings displaced in phase from one another.

Claim 3

The combination according to claim 1, wherein the average coil pitch is on the order of eleven-twelfths.

Claim 4

The combination according to claim 1, wherein the average coil pitch iS twenty-one twenty-fourths or greater.

Claim 5

A dynamoelectric machine as recited in claim 1, wherein said phase windings of said armature winding comprise two separate three-phase windings displaced in phase from one another by 30 electrical degrees.

Claim 6

A dynamoelectric machine as recited in claim 1, wherein said armature winding comprises nine phase windings, said phase windings being connected to form three separate sets of three-phase windings displaced in phase from one another by 20 electrical degrees.

Claim 7

A dynamoelectric machine as recited in claim 1, wherein there are provided at least 12-phase belt in said armature winding.

Claim 8

A dynamoelectric machine as recited in claim 1, wherein the circuit sequence of coil sides lying in one layer of a phase belt of said winding is 1221, and the circuit sequence of the transposed coil sides lying in the other layer of said phase belts of said winding is 2112.

Claim 9

A dynamoelectric machine as recited in claim 1, wherein the circuit sequence of coil sides lying in one layer of a phase belt of said winding is 1212, and the circuit sequence of the transposed coil sides lying in the other layer of said phase belts of said winding is 2121.

Claim 10

In a polyphase armature winding including a plurality of winding coil sides disposed in a first and a second layer means for series-connecting coil sides in a first layer with coil sides in a second layer to form a plurality of individual circuits; means for connecting groups of said circuits in parallel to form pairs of phase belts, each of said phase belts being displaced by substantially 180 electrical degrees with respect to the other phase belt of the pair, the coil sides of said circuits which lie in the same winding layer being adjacent one another; the circuits of each phase belt which lie in a first layer of a phase belt being disposed in a first sequence, and the circuits of each phase belt which lie in the second layer being disposed in a sequence which is the transposition of said first sequence; means for connecting in parallel pairs of phase belts having voltages of similar phase and magnitude generated therein; means for connecting said phases into groups of three so as to provide at least two phase-displaced three-phase windings.

Claim 11

In a polyphase armature winding including a plurality of winding coil sides disposed in a first and a second layer means for series-connecting coil sides in a first layer with coil sides in a second layer to form a plurality of individual circuits; means for connecting groups of said circuits in parallel to form pairs of phase belts, each of said phase belts being displaced by substantially 180 electrical degrees with respect to the other phase belt of the pair, the coil sides of said circuits which lie in the same winding layer being adjacent one another; the circuits of each phase belt which lie in a first layer of a phase belt being disposed in a first sequence, and the circuits of each phase belt which lie in the second layer being disposed in a sequence which is the transposition of said first sequence; means for connecting in parallel pairs of phase belts having voltages of similar phase and magnitude generated therein; means for connecting said phases into groups of three so as to provide at least two phase-displaced three-phase windings.