JPS58141656A - Induction machine for driving inverter - Google Patents

Abstract

PURPOSE:To reduce the noise and vibration even if non-sinusoidal wave power source such as an inverter is employed by inserting a wedge made of conductive material of magnetic property into a slot of a stator core. CONSTITUTION:A magnetic flux 9 is provided from a stator core 1 through an air gap 7 to a rotor core 8. When a wedge 6 made of a conductive material of magnetic property such as iron is inserted into the opening 5 of a slot 2, part of the magnetic flux does not flow toward the air gap 7, but passes through the wedge 6 as designated by magnetic flux 10 and does not flow toward the core 8. This flux 10 is leakage magnetic flux, thereby increasing the leakage magnetic flux. In this manner, ripple of harmonic component of the voltage and current waveform from non-sinusoidal wave power source such as an inverter to an induction machine is reduced, thereby largely decreasing the noise and vibration.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-sinusoidal electromagnetic induction motor for non-sinusoidal wave motion, such as an inverter, in which the magnetism of the stator core is improved.

Unlike conventional non-sinusoidal wave power sources such as inverters, the power supply voltage and current waveforms are not sinusoidal waves but rectangular waveforms or collections thereof, unlike commercial systems. Therefore, compared to the case of sine wave electricity, there are many applications for non-voltage inverters such as this one! *When the hook part-1 was operated with the Masakigen, there was a drawback that the noise and vibration increased by m-1 due to the number of legs involved. In addition, A-wrinkles such as this one increase the loss of the Ik rumor machine and cause an excessive temperature rise, and these excessive losses reduce the operational efficiency of the attraction machine. .

To overcome these shortcomings 4: Conventionally, i11 magnetic wire had a magnetic side of 10゛'* ん used for the constant iron core of h-fatty machines. However, this countermeasure was not used very often. It was a good idea to reduce the chime noise. In addition, the above-mentioned disadvantages can be alleviated by separately connecting the 4-inductance terminal 6 and the 2-inductance V and inputting the IIE ratio or current to 1-inductance with a little smoothing. Another problem with inductance is that installing an inductance device requires an additional expense.

This threat was made in view of the above-mentioned deviations, and reduces the noise and vibration when driven by a non-sinusoidal power supply. TeiiiIIIj11m@ShinV decreases to reduce iron V'
V: The purpose is to provide the electric machine equipped with the following.

Part 1 of the present invention will be described below with reference to Example 7. The first reason is - This is an enlarged cross-sectional view of the hook of the Hiroki stator Youshin, and the #$2 inner arc 2 of the stator iron core 1 is the fixed pre-winding 3 wrapped with the III loquat 4, and the sekiguchi part 5 of the tile 2. It is formed by inserting 1116 (hereinafter referred to as WK sash) made from the sash for general assault.

The above-mentioned configuration 1: Next I: Function and effect 6 will be explained below. In the present invention, iron-6 is used for the groove s5 of the groove 2 of the kneaded stator core l, as shown in the wh-plane diagram showing the flow of magnetic flux near the groove of the 1st stator core 1 in FIG. , from stator core l? ! If the part 9 passing through fi7t' and striking the rotor core 8 is inserted into the iron box 6 or the conventional magnetic part 5 with a permeability of 10, the magnetic flux A part of the magnetic flux 116vt does not flow toward the air gap 7, and the magnetic flux 10 passes through the iron 116vt, making it impossible to weave a single layer toward the 1st trochanter core 8,':1. 'In this magnetic flux, the force in the case of iron@6 flows more than in the case of the conventional i-sexuality view.

Q) The magnetic flux 10 that does not flow toward the rotor core 8 is so-called leakage magnetic flux, and if there is no magnetic flux 10, the magnetic flux 10 that does not flow toward the rotor core 8 is the same as the conventional magnetic permeability or the magnetic flux 11 of 10 degrees (hereinafter referred to as a magnetic sac). (abbreviation), the case of using iron [6, the number of comparisons, and the case of using 11i
6, the leakage magnetic flux increases. -2m The increase in leakage actance is due to this increase in aia reactance62.
) The ripples of the island-wave components of the voltage and current curves to rAaIIIA are reduced. The cocoon in figure 3 (4) of the binding! 1il1
As shown in 2, in the case of conventional magnetism or without the figurine 6, 1
: 1l13N against Ripple's Fadewa 12&! 12(
Bl song! As shown by 1i13, when the iron box 6 of the present invention is used, it is found that 1@13& of 9 tuples is reduced. Such a decrease in the ^-wave component has a time height of 1llI
It has the effect of reducing liltILv and reducing vibration and noise. In addition, the 141 relationship between the magnetic permeability and the vertical force of the steel structure 6 and the conventional i-type 11114 are shown in the fourth section. That is, in general, the magnetic permeability for each f&magnetic force-2 of a conventional magnetic bond is di! As shown by 1l14, it is about 10 (・HōU), which is half a set, but the maximum characteristic of iron*6 is about 6400 (・HōU), as shown by a*is, which is generally the same as before. It is two times larger than the Marquis of Yishi. Therefore, iron 1f! 6V
Insert a #1 into the opening 5 of the glue 2 of the stator iron core.
2. Therefore, the opening 5 of 11 #2 for the magnetic flux distribution of ~9 7 becomes smaller, and the total magnetic flux at 76: becomes sinusoidal and approaches. , for example, the fifth factor is the relationship between the order of the high wave and the ratio to the fundamental wave am
As shown in the above, the curve 17 of the steel structure 6 is reduced to about 1'1% when compared with the order 17 of the conventional magnetic flux 16.

If we compare the sound pressure level (4B) generated by the frequency (Hs) caused by the inverter operation for the same to the 6th cause, the bell will be 6 ni impa as shown in song 18. Ta reach frequency 30 (Hid) and 60 (Hg)
8 and is about 57 ((LB), while - song! 19
iron box 6 [If used, inverter operating frequency 30 (H
g), the sound pressure level is approximately 50 (dB) and 60 (Is)
The effect is to reduce the sound pressure level by about 5 (dB) to about 7 (IB) by about 52 (dB). Since the steel horizontal 6 of the present invention has a certain degree of a111iiL property as a whole, the energy of the inverter's conduction time is lost to the steel structure 6, and the energy of the noise is reduced. be.

Conventional commercial turtles had the drawback that when the iron pan 6V was heated, a loss occurred in the iron pan 6 part, which clouded the efficiency. Even if iron $6 is used in thick noodles, the leakage rate increases and! !
[7^gt As the magnetic flux decreases, the current and electrical ratio waveforms approach sine waves, and the effective electrical ratio increases, and the effective electrical ratio and #1I
IIIfi Kaede's output increases and the efficiency increases, for example, in Figure 7, the characteristic of efficiency against torque is shown in Figure 11! As shown by 21, compared to the conventional efficiency characteristic curve 1120, there is an effect of improving the efficiency characteristic curve 1120 compared to the conventional lure machine. The shape of the iron 116 of the present invention is not limited to the above-mentioned shape, but can be changed as appropriate depending on the shape of the iron 1112, and it is possible to make the iron 1116 partially or entirely bi-electrified. According to the present invention, as mentioned above, even if a non-sinusoidal wave *mV such as a 6-internal impeller is used, the noise and vibration within the stator core are significantly lower than when using a two-iron VII) It has the effect of doing this, and it is also more efficient than the conventional 51! l! The effect of 1 and approximately 100% can be obtained.

[Brief explanation of the drawing]

The first section is an embodiment of the present invention
Figure 2 is a sectional view showing the east flow t near #1 of the stator core of the present invention;
Figure IJ3 is a waveform diagram of the first-class waveform of the conventional Ki-ro vibration, Figure IJ3 is a first-class waveform diagram when using the vca't' of the present invention, and 4th- is a diagram of the magnetomotive waveform of the first version of the present invention and the conventional magnetic mourning. [magnetic permeability and Q] characteristic curve diagram. Fig. 5 is a curve II diagram of the order of tuning and the ratio to the fundamental wave in the iron case of the present invention and the conventional I property, and Fig. 6 is a curve II diagram of the ratio to the inverter operating position.
kSound sound pressure level comparison characteristic curve-1, s7 diagram is a comparative characteristic sIh diagram of the young goose with respect to torque. l...Stator core 2...Golden 5...Opening s 6...Steel structure lO...Magnetic flux
13a...Furikin (7317) Daishionin Benenshi Nori Chika Yusuke (and 1 other person) 1st cause Figure 2 Funeral diagram 3 (A) CB) /3 Figure 4 One Ax M Conspiracy No. 5 Figure 6/θ 30 4ρ Inhaak” 1μ Okan Ryohagi (H,)

Claims (1)

[Claims] (1) Open bottom part of the iron core into which Width ii1 is inserted 111 times - Insert the part made of bi-characteristic material Q) material.
The patented inverter structure was damaged. (IMl consisting of l143tt, which is a
Claim Il! is made of iron material! ! l In the first term - inverter drive @1116 Wow, (3) iron core &) #14! The shaft of the patent claim is characterized in that the part of the mouth to be inserted is made of zelkova magnetic material and electrically conductive material.