SU700895A1 - Pole-switchable winding for 6-4-2 poles - Google Patents

Description

one

The invention relates to electrical engineering and can be used to create multi-speed electric motors.

A winding of 6-4-2 poles is known, consisting of nine main coils and three additional coils, the additional coils being made with the number of turns, representing approximately 10-11% of the number of turns of the main coil, and the step of the additional coil being approximately double pole division at 6 poles The winding has 13 conclusions.

The lack of a known winding in the complexity of implementation.

Also known is a winding consisting of a phase of four coil groups, the numbers of which can be determined from the expression (4t-3) + 3t, where m 1, 2, 3, t successively takes the values O, 1, 2, 3, and the neighboring the groups in the semi-phases are connected in opposite directions, and the semi-phases are in agreement with each other. When such a winding is turned on in a three-phase network according to a star or a triangle scheme, it creates the number of pole pairs p-1, and when all three phases are switched on para. In a single-phase network, it creates the number of pole pairs p 3 3. With

switching on the winding into a three-phase network by conclusions taken from the middle of the phases, and when switching on the phases according to the scheme of a double star or a double triangle, we obtain the number of pole pairs.

A disadvantage of the known winding is that at 6 poles it creates a pulsator throughout the field and the motor in this case works with low energy indices.

This technical solution is closest to the invention according to the technical nature of the problem being solved.

The aim of the invention is to improve the energy performance of an engine with a multiple of three poles.

This goal is achieved by the fact that (4t-3) + 3 coil group is connected in opposite way to (4t-3) + 9 coil group and additional conclusions are taken from the sulfur are united in semi-phases.

FIG. 1 shows the scheme of intraphase connections; in fig. 2 - the scheme of the mark; in fig. 3 phase connection diagram.

Claims (1)

According to FIG. 1, the phase of the winding consists of four coil groups connected in series-counter, with the second category: the terminus group of the phase is connected with the fourth. The conclusions are taken from the junction of the coil groups. . According to FIG. 2, the winding contains the same -cushion groups, and to reduce their number, the fifth phase terminals are combined, forming a zero point with a common terminal. According to FIG. 3, the number of pole pairs is obtained when the three-phase voltage is connected to terminals A4, B4, C4. If the three-phase voltage is brought to conclusions Л2, В2, С2, by combining conclusions А4, В 4, С4 /, we get the number of pairs of pluses. By combining the terminals M, b, C and A3, 3, C3 and feeding the windings from a single-phase voltage through them (for example, the combined pins A.4, B4, C4 are connected to the capacitor by clamping) :; 3. In this case, the three-phase winding is converted to two-phase with a shift of the magnetizing forces of the phases by 90 °. With the help of a capacitor in this case, a rotating magnetic field can be achieved. When the winding can be connected and a triangle, in this case from the winding you must have all 15 conclusions. Claims of the invention Pole-switching winding for 6-4-2 poles, including sequential-opposite connected reel groups in the semi-phases, the numbers of which are determined from the expression () + f-3t, in order to improve the energy performance of the engine with a multiple of three poles, (4t-3) +3 coil group is connected in opposite to (4t-3) + 9 coil group and additional conclusions are taken from the middle of half of Ufa 3, where m 1, 2, 3; consecutively takes the values O, 1, 2, 3. A A about od1 Oh oh and K1 W W V OAZ About AV About A3 Figure 1 About 6 about about about about about 81 S1 L1 91 A A3 rf