JPS62239849A - Split-phase type single phase induction motor with transformer winding - Google Patents

Abstract

PURPOSE:To perform the action of a motor and a transformer at the same time, by arranging the transformer windings of the arbitrary number of turns wound up in the same manner, in the same slots as those of the main windings of the stator of an AC motor. CONSTITUTION:To stator windings 1 and stator auxiliary-windings 2, single phase voltage is fed for start, and when a motor comes to given rotational frequency, then the auxiliary windings 2 are released by a switch 5 for operation. By the current of the stator windings 1 and the current of squirrel-cage rotor windings 3, an electromotive force is generated on transformer windings 4 which function as transformers. Accordingly, when the transformer windings 4 are inserted and wound up in the same slots as those of the main windings l in the same manner as shown in the figure, then voltage is generated between the terminals of the transformer windings 4 and can be used as the power source of another load.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an electric motor having a structure in which a transformer winding of an arbitrary number of turns is wound in the same slot as the stator main winding of an AC motor, and the function of the motor and the transformer can be performed simultaneously. Its characteristics are as follows, and examples thereof will be explained with reference to the drawings.

FIG. 1 shows an example of a motor having a transformer winding wound with an arbitrary number of turns in the same slot as the stator main winding of a split-phase single-phase induction motor.

1, 2 and 3 in Fig. 1 are split-phase type single-phase induction motors,
When a certain number of rotations is reached, a switch 5 provides supplementary function. Therefore, when the transformer winding 4 is inserted and wound in the same slot as the main winding as shown in FIG. 2(b), a voltage is generated between the terminals of the transformer winding, and the transformer winding can be used as a power source for another load.

By providing a new transformer winding in this way, the function of a transformer can be added in addition to the function of an electric motor. According to the embodiment, if the transformer load capacity is within a range that does not affect the motor characteristics, there is no particular problem in practice.

The above has explained the embodiment of the split-phase type single-phase induction motor shown in Fig. 1, but in the case of a three-phase motor, as shown in Fig. 3, a transformer winding is wound for each phase winding in the same way as in the single-phase case. If this is connected externally for single-phase and three-phase wiring, it can be used as a single-phase or three-phase transformer. Especially when a single-phase power supply is temporarily required in a place where only a three-phase power supply is installed, or when a different three-phase power supply is required, wo: zu i, ln, yo fight IJ-tenu,
Shiμmii〉Topsie! It has advantages such as not requiring wiring for a 4-kV power supply or a three-phase power supply.

Currently, conventional electric motors focus on power generation, and no consideration is given to other transformer functions. This invention has the advantage that a transformer winding is newly provided in the slot of the stator main winding of the AC motor, and a separate power source can be easily obtained from the motor during operation. Since single-phase and three-phase power supplies with different voltages can be obtained from a three-phase power supply via an electric motor, there is no need for separate wiring, and there are great benefits in terms of saving materials and convenience of use.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2 is a comparison diagram of the conventional motor main winding arrangement (a) and the winding arrangement of the present invention (b), and Fig. 3 is a three-phase winding. The configuration diagram of the line is as follows: rotor winding, 44 transformer winding, 5. Centrifugal switch patent applicant Ryusan Yano 1 Figure Kaya 2 Figure

Claims (1)

[Claims] A motor that has a separate transformer winding similarly wound in the same slot as the stator main winding of an AC motor, and has two purposes of use: as a transformer and a motor, consisting of the stator main winding and the transformer winding.