KR100701314B1 - A generator for lighting - Google Patents

Abstract

A generator for lighting is provided to control voltage drop by adjusting a leakage flux of the wedge by controlling a thickness of wedge to close a slot of a stator. A generator includes a main rotor(30) to rotate by using a rotor shaft and a main stator(50) installed apart from the main rotor. The main stator includes a plurality of slots having an aperture portion to the main rotor and an wedge with laminated metal panel which is used for dropping voltage to a desired voltage by controlling leakage flux while the slots are blocked. The thickness of each metal plate is about 0.5mm. The plural metal plates are formed by laminating seven through ten metal plates. An auxiliary unit such as a barrier rib is formed in the slot of the main stator in order to minimize flux influence on an adjacent slot.

Description

Generator for lighting

1 is a conceptual diagram illustrating a case where a ballast is used to light and control a general lamp.

2 is a conceptual diagram illustrating a case where a breaker is used to light and control a general lamp.

Figure 3 is an exemplary view showing a circuit that can not be used to turn on and control a general lamp.

4 is a conceptual view showing a state in which a plurality of generators are mounted on the same axis in a conventional lighting generator.

Fig. 5 is a plan conceptual view showing the distribution of leakage magnetic flux at no load of the main stator of the conventional lighting generator.

Fig. 6 is a plan conceptual view showing the distribution of leakage magnetic flux under load of the main stator of the conventional lighting generator.

7 is a plan view showing a change in the magnetic flux of the main stator of the lighting generator according to the invention.

8 is a side cross-sectional view of a lighting generator according to the present invention.

Figure 9 is a perspective view showing a state that the upper edge is inserted and fixed in the slot of the main stator of the lighting generator according to the invention.

※ Brief description of the symbols in the drawings

100: lighting generator

10: casing

20: axis of rotation

30: main rotor

40: permanent magnet

50: main stator 52: slot

54: upper part 56: auxiliary value

60: stator coil

The present invention relates to a stator of a permanent magnet generator used in the lighting generator.

Generally, metal halide lamps used in lighting generators put metal halides into quartz light emitting tubes to evaporate and dissociate metal halides by arc discharge. It refers to a lamp using a metal-specific light, the characteristics of the metal halide lamp is lit by the discharge phenomenon, the discharge start voltage, the discharge voltage, the lighting voltage is different from each other.

As a result, the 1.5kW lamp is gradually changed in voltage and current at 440V at the start of discharge and at about 13A and 20V during discharge, and becomes 6.3A and 250V when lighting is completed.

As shown in FIGS. 1 and 2, a ballast connected between a power source and a lamp performs the role of a lamp that requires such a wide range of voltage changes. You will be asked.

As described above, even when using the characteristics of the generator, as in the case of using a ballast, it is not possible to connect several lamps to one circuit. That is, as shown in Figure 3, because only one lamp can be used in one circuit, the power supply circuit of the generator should also be configured as a separate and independent circuit for each lamp.

As an example, to turn on 10 lamps, there must be 10 independent power circuits inside the generator.

Accordingly, a multi-pole generator is used. For example, when a generator using 66 lamps is manufactured, a generator of at least 66 poles is required.

However, in this case, the frequency is determined by the number of revolutions of the engine due to the structure of the generator driven by the engine. For the 66-pole 1800 rpm generator, the frequency reaches 990 Hz and the silicon steel sheet to be used at the frequency of 990 Hz must be special and generally used. Silicon steel sheet becomes impossible to use.

As another example, if 66 lamps are used as a three-phase generator, a three-phase 22-pole 1800 rpm generator can be used to produce silicon steel sheets with a frequency of 330 Hz. The lamp does not turn on smoothly.

Therefore, when the number of lamps to be used by making a multi-pole single-phase generator of usable frequency increases, as shown in FIG. 4, a method of structurally combining electricity on the same axis is employed.

Referring to Figure 5 the structure of the general lighting generator as described above is as follows.

The stator provided with the rotor and the air gap of the generator has a plurality of slots in the circumferential direction, and the slot is open in the rotor direction.

That is, the structure of the generator to be used as the power of the lamp is manufactured by using the characteristics of the leakage magnetic flux increases with the increase of the current while maintaining a constant magnitude of the magnetic flux supplied from the rotor using a permanent magnet.

A top is provided to close the slot, which is usually made of an insulating material or is open.

This is because the leakage flux in the generator corresponds to the loss, so in general, the design and manufacture of the generator is designed to minimize the leakage flux.

However, in the generator for lighting, the higher the leakage flux, the lower the voltage induced in the coil. Therefore, when the lamp is discharged, a high voltage (usually 380-400 V) is generated at no load, and at a high current during discharge, a power supply suitable for operation of the lamp (Low voltage of 240-260V in the case of lighting generator) flows, and the rated voltage should be formed when the lighting is completed. Therefore, the leakage magnetic flux is deliberately increased through the top for the voltage drop from the high voltage to the low voltage. There is a need.

The present invention has been proposed to solve the above problems,

First, it aims to easily achieve the voltage drop to the desired voltage by controlling the amount of leakage flux through the thickness of the upper lid closing the slot of the main stator.

Secondly, the purpose of the present invention is to provide a generator for lighting to prevent the magnetic flux is reduced due to the influence between the slot and the slot of the stator is fixed to the rotor and the rotor is inserted into the rotating shaft in the generator, the lighting is possible. do.

In the lighting generator according to the present invention for achieving the above object is a lighting generator consisting of a main rotor rotating with a rotor shaft in the center, and a main stator fixed to the main rotor and the air gap, the main stator A plurality of slots are formed in the circumferential direction and open toward the main rotor, and the slots are closed, and a plurality of metal panels are stacked in order to control the amount of flowing leakage flux and to drop a voltage to a desired voltage. It is set as the characteristic structure to include.

Hereinafter, a detailed configuration of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 8, the generator 100 according to the present invention includes a casing 10, a rotation shaft 20, a main rotor 30, a main stator 50, and the like.

 The casing 10 consists of a front cover 10a and a rear cover 10b to support various accessories including a main stator and a main rotor, to seal various refrigerants required for the operation of the process, and to ventilate the ventilation. It is widely used to provide a furnace and to prevent torsional force of various accessories.

Three stator coils 60 (stator coils) are introduced into the main stator 50, and the main stator coils 60 are inserted into respective stator cores arranged in multiple layers in the stator core. Winding) serves to guide a series of AC voltages into the main stator.

In addition, a rotor coil of two wires is introduced into the shaft 20 of the main rotor 30 which rotates with the main stator 50 in a space, and the main rotor coil is a main circuit. Is inserted into a slot formed in the axis of the electron, and serves to guide a series of DC voltage is induced around the main rotor (30).

Thus, in the situation where the AC voltage is induced inside the main stator 50 and the DC voltage is induced around the main rotor, the turbine is operated by the action of the external power means, and the shaft and When the rotor inserted with the shaft rotates, a series of alternating voltages can be induced outside the generator, and thus the generator can transfer the alternating voltage to the rectifier. An appropriate amount of electrical energy can be supplied to the stably.

Looking at the structure of the main stator 50, as shown in Figures 5 to 6, the main stator 50 has a structure in which a plurality of slots 52 are formed adjacent in the circumferential direction. The slot 52 is open in the main rotor direction, and the open slot is closed by the upper edge 54.

That is, the flow of the magnetic flux of the generator of the present invention with reference to FIG. 6, the flow of the magnetic flux is the rotor 30-stator autonomous 57-stator yoke 58-stator autonomous 57-rotor ( A closed circuit of 30) is formed to induce voltage in the coil of the stator.

However, a coil is wound around the slot 52 of the stator of the present invention, and the leak forms the closed circuit of the rotor 30-the fixed autonomous 57-the upper part 54-the fixed autonomous 57-the rotor 30. The magnetic flux is inserted into the slot 52 so as not to induce voltage in the wound stator coil.

Therefore, the greater the leakage magnetic flux, the lower the voltage induced in the coil. Therefore, a high voltage is generated at no load, and a low voltage flows during discharge.

That is to make it adjustable through the upper 54.

Referring to FIG. 9, the upper edge 54 closes the slots, and a plurality of metal panels are stacked to adjust the amount of leakage magnetic flux to drop the voltage to a desired voltage.

And the thickness of the metal panel is preferably formed in about 0.5mm, the metal panel is laminated in the range of 7-10 sheets, the width of the metal panel is designed to fit the size of the opening of the slot, the vertical width is usually 40-55mm.

When changing the voltage and frequency of the lighting lamp according to the stacking amount of the metal panel of the upper plate 54 as described above through [Table 1] as follows.

TABLE 1

LAMP 1 LAMP 2 Remarks Voltage [V] Current [A] Frequency [Hz] Voltage [V] Current [A] Frequency [Hz] 248.6 3.4 273 303 273 <Light> Top 11 piece, 55mm Lamp2 not lit 252 4.4 318 342 318 <Light> Top 11 piece, 55mm Lamp2 not lit 423 - 342 408 - 342 <No load> Upper 11 pieces, 55mm 250 3.6 342 245 4.1 342 <Light> 11 upper pieces, 55mm 385 - 303 384 - 303 <No load> Upper ten pieces, 40mm 246 4.3 242 4.2 <Light> 10 pieces of upper paper, 40mm 246 4.8 <Lamp1 single lighting> 10 pieces of upper paper, 40mm 396 314 395 314 <No load> 7 upper pieces, 40mm 258 5.4 308 <Lamp1 single lighting> Upper seven pieces, 40mm 390 302 392 302 <No load> Upper five pieces, 40mm 260 7.0 <Lamp1 individual lighting> Upper five pieces, 40mm 257 5.9 302 253 6.5 302 <Light> 5 pieces of upper paper, 40mm

Looking at the results of the experiment, if the upper metal panel of 10 sheets is 0.5mm × 10 sheets = 5mm, the test data is 385V, 0A at no load and 246V, 4.3A at lighting.

In addition, if the upper metal panel is 7 sheets, the thickness of the upper substrate is 0.5mm × 7 sheets = 3.5mm. At this time, the test data shows 396V, 0A at no load and 258V, 5.4A at lighting.

It can be seen that it is preferable to stack 7 to 10 sheets of the top 54 for the voltage drop from the voltage (380-400) initially applied to the voltage (240-260 V) for easy operation of the lighting generator. have.

That is, when the length of the metal panel of the upper plate 54 is increased to increase the space in which leakage magnetic flux can flow, it can be seen that the voltage and current decrease as compared with the case where the number of the metal panels of the upper plate 54 is small.

Therefore, since the top 54 of the conventional generator is usually required to reduce the leakage flux, it is impossible to control the flow amount of the leakage flux using an insulating material, whereas the top 54 of the generator of the present invention deliberately leak leakage It is possible to efficiently operate the lighting generator by adopting a plurality of stacked metal panels to increase the voltage to the power supply suitable for the lighting generator to adjust the thickness.

When the lamp is turned on in one of the coils configured as described above, the amount of magnetic flux induced in the slot 52 in which the two coils adjacent to the coil are located is also affected. In other words, the magnetic flux is reduced for adjacent coils to lower the induced voltage.

Therefore, if there are two or more slots constituting a circuit, some slots are not affected by the circuit used for lighting, so it is possible to manufacture them in a direction that minimizes the influence of adjacent coils. In the case of configuring the circuit, adjacent coils may also be reduced in voltage and thus may not reach the discharge start voltage, thereby preventing the lamp from being lit and losing its function as a power source of the lamp.

Accordingly, as shown in FIG. 7, that is, when one power circuit is configured in one slot 52, an auxiliary value 56, which is a kind of partition wall, is formed inside the slot 52. The auxiliary tooth 56 is formed to have a gap with the upper leg 54.

Therefore, it is possible to minimize the influence of the magnetic flux reduction on the adjacent slot 52 by the auxiliary value 56.

That is, the amount of magnetic flux passing through the teeth of the B and C portions, which are the passages of the magnetic flux induced in the coils of the adjacent slots when the lamp is turned on by the coils affected by the teeth of the portion A, is the magnetic flux through the auxiliary value 56. Due to this, the amount of magnetic flux that decreases in comparison with the magnetic flux in the absence of an auxiliary value is remarkably reduced, so that sufficient magnetic flux for the discharge start voltage can be continuously supplied to adjacent coils, thereby ensuring the independence of each power circuit.

In addition, the application of the auxiliary value 56 can also be used more effectively in the case of configuring a circuit using several slots.

According to the present invention by the above configuration,

First, the voltage drop to the desired voltage is easily achieved by controlling the amount of leakage flux through the thickness of the upper lid closing the slot of the main stator, so that the voltage required for the lighting generator can be easily applied.

Second, the present invention extends with the stator in the slot of the stator fixed to the rotor and the rotor is inserted into the rotating shaft to form an auxiliary value spaced at a certain distance in a direction perpendicular to the upper limb to the adjacent slot by the auxiliary tooth There is an effect that can minimize the effect of magnetic flux reduction.

Claims (4)

In the generator consisting of a main rotor that rotates with a rotor shaft in the center, and a main stator fixed with a gap between the main rotor, The main stator is formed with a plurality of slots open toward the main rotor along the circumferential direction, Closing the slot, the lighting generator, characterized in that the top of the plurality of metal panels are stacked is inserted for the voltage drop to the desired voltage by adjusting the amount of leakage flux flowing. The method of claim 1, The thickness of the metal panel is a lighting generator, characterized in that formed in about 0.5mm. The method of claim 2, The metal panel is a lighting generator, characterized in that laminated in the range of 7-10. The method of claim 1, An auxiliary tooth which functions as a partition wall is formed inside the slot of the main stator, and a lower end of the auxiliary tooth is formed to have a gap with the upper edge, so that the influence of the decrease of magnetic flux on the adjacent slot by the auxiliary tooth is minimized. Lighting generator, characterized in that.

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