RU165901U1 - SYNCHRONOUS GENERATOR: ADDING THREE PHASES - Google Patents

Abstract

Synchronous three-phase generator: the addition of three phases into one alternating voltage and current, consisting of a stator and a rotor, where the stator is made with three opposite groups of phases of two-layer windings connected in series by switching three semigroups of opposite phases of two-layer three-phase windings with different pitch y = 2 and y = 3, connected in series in one first phase - a group of windings ABC, the second phase - a group of BCA, the third phase - a group of windings CAB, followed by the connection of three groups of windings in a star or delta, to generate ele power generator in three-phase mode.

Description

The device relates to electrical engineering and can be used to generate electricity.

Known synchronous generator 1601.3701, 910 watts. which is an electric three-phase synchronous generator with electromagnetic excitation of the rotor. At the same time, a two-layer winding is laid in the stator, based on the data: the number of grooves z = 36. the number of pole pairs 2p = 12, the winding pitch y = 3, the number of grooves at the phase pole q = 1, the number of parallel branches a = 2. Phase connection diagram in the stator to the star, two parallel branches. The rotor, where the field winding is laid, magnetizes the poles, where 2p = 12. at the same time. (I.A. Danilov, K.V. Lotonky, - Electrical Machines, 1977, M, Higher School, p. 206).

Known synchronous generator 37.3701, with a capacity of 770 watts, which is an electric three-phase synchronous generator with electromagnetic excitation of the rotor. At the same time, a two-layer winding is laid in the stator, based on the data: the number of grooves z = 36, the number of pole pairs 2p = 12, the winding pitch y = 3, the number of grooves at the pole of the phase q = 1, the number of parallel branches a = 2. Phase connection diagram in the stator to the star, two parallel branches. The rotor, where the field winding is laid, magnetizes the poles, where 2p = 12, simultaneously. (Fig. 1-2 presents a diagram of the stator winding of these synchronous generators).

The disadvantage of these synchronous generators is that they do not provide the installed power and generate electricity of insufficient quality.

A known system for generating a stable AC voltage (RU 121974 U1, Н02Р 9/44 (2006.01), 10.11.2012), in which after the generator additional devices are installed, namely converters and filters to produce high-quality electricity. This complicates the design and leads to additional costs.

Utility Model Tasks:

Synchronous generator the addition of unlike three phases in one phase jointly obtained from three phases without voltage loss in the combined common phase improving the quality and increasing the power of electricity generated.

The essence of the utility model is as follows: in the stator of a three-phase synchronous generator, three groups of unlike two-layer three-phase windings are laid in grooves with a series connection of unlike three phases in one phase - a group of three folded phases without loss of voltage during the addition of three opposite phases in series into one group, the subsequent receipt of two other opposite groups and S.A.V. then connect to a star or triangle to turn on the load.

In FIG. 3-6 presents a diagram of the stator winding of the proposed synchronous generator. Stator winding at 2Р = 12, Z = 36, g = 2, а = 1, y = 2, y = 3.

A useful model of a synchronous three-phase generator consists of a stator, where three two-layer groups of windings are stacked, where in each semigroup four windings in each phase, one semigroup of two-layer windings of unlike three phases are located in twelve grooves, the third half-group of two-layer windings of unlike three phases A.V. FROM. laid in grooves with a winding pitch of y = 3, phase B is laid in grooves with a single-layer winding, the number of turns in each phase is the same.

In the first group of two-layer windings of the opposite three phases A.V. connected in series in (10, 24) grooves C4, C5 ′ laid in (1 ... 10) grooves C1, C4 first half-group of phase A windings, second half-group of windings laid in (15 ... 24) grooves C2 ′ C5 ′ of phase B, third semigroup windings laid in (26 ... 35) grooves C 3 , C 6 phase C, connected in series in (15, 26) grooves C 2 ′, C 3 .

The beginning of C1 and the end of C6 of the first group of windings of three phases A.V. connected in series.

The second group of two-layer windings of unlike three phases V.S.A. connected in series in (12, 25) grooves C5, C6 ′ laid in (3 ... 12) grooves C2, C5 the first half-group of windings of phase B, the second half-group of windings laid in (16 ... 25) grooves C3 ′, C6 ′ phase C, third a semigroup of windings laid in (25 ... 34) grooves C 1 , C 4 phase A in series (16, 25) grooves C3 ′ C 1 . The beginning of C2 and the end of C 4 ′ of the second group of windings of the three phases B.C. A connected in series.

In the third group of two-layer windings of opposite three phases S.A.V. connected in series in (13, 22) grooves C6, C4 ′ laid in (4 ... 13) grooves C3, C6 the first half-group of windings of phase C, the second half-group of windings laid in (13 ... 22) grooves C1 ′, C4 ′ of phase A, third a semigroup of windings laid in (27 ... 36) grooves C 2 C 5 phase B connected in series (13, 27) grooves C1, C 2 . The beginning of NW and the end of C 5 of the third group of windings of the three phases of C.A. B are connected in series.

The resulting groups of windings with different steps y = 2 and y = 3 are connected into a star or triangle.

The rotor is similar to the rotors in synchronous generators 16.01.3701 and 37.3701., Consists of 12 pluses, where the excitation winding is placed, which excites the magnetic field, alternating between the poles of the N-S-N-S poles and so on with the number of 12 pieces.

The proposed three-phase synchronous generator operates as follows: when the rotor rotates in the stator, the magnetic poles alternate in the N-S-N-S order, and so on, the magnetic field intersects the windings located in the stator; a change in the polarity of the alternation of the poles during rotation of the rotor leads to the induction of the electromotive force of the EMF in the turns of the windings.

Claims (1)

Synchronous three-phase generator: the addition of three phases into one alternating voltage and current, consisting of a stator and a rotor, where the stator is made with three different groups of phases of two-layer windings connected in series by switching three semigroups of opposite phases of two-layer three-phase windings with different pitch y = 2 and y = 3, connected in series in one first phase - a group of windings ABC, the second phase - a group of BCA, the third phase - a group of windings CAB, followed by the connection of three groups of windings in a star or delta, to generate electrical nergii generator three-phase mode.

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