CN201332024Y

CN201332024Y - Combined capacitor capable of effectively absorbing harmonic voltage

Info

Publication number: CN201332024Y
Application number: CNU2008202063096U
Authority: CN
Inventors: 孔星; 尤枝辉
Original assignee: FOSHAN SHUNDE CHUANG GE ELECTRONIC INDUSTRY Co Ltd
Current assignee: FOSHAN SHUNDE CHUANG GE ELECTRONIC INDUSTRY Co Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-10-21
Anticipated expiration: 2018-12-29

Abstract

The utility model discloses a combined capacitor capable of effectively absorbing harmonic voltage, which comprises a shell body, at least one capacitor body, body leading-out ends and embedding materials, wherein the capacitor bodies are arranged in the shell body, two ends of the capacitor bodies are respectively connected with the body leading-out ends, the body leading-out ends extend outside the shell body, the body leading-out ends are connected through arranging a small capacitor with small-capacitance and high-voltage resisting ability, and the embedding materials are embedded around the capacitor bodies in the shell body. The combined capacitor has simple structure, can support the work of circuits, simultaneously can rapidly absorb harmonic voltage, instant surging shock voltage and interference noise, thereby guaranteeing the stable normal work of the circuits and relatively reducing the cost.

Description

The combined capacitor of energy effectively absorbing harmonic voltage

Technical field

The utility model relates to the technical field of industrial electro container, more specifically says, mainly is to be used for the capacitor that UPS, frequency converter, electroplating power supply, inverter type welder, inverter, induction heating equipment and conversion switch use.

Background technology

In circuit design, eliminate noise jamming, prevent that swell damage from being the technical barrier that its designer has a headache very much always, but, prevent that harmonic voltage from but being an important parameters to the influence of capacitor, especially in the higher precision instrument and equipment of ask for something; In electric power system, large scale electronic equipment, and electric power system is a very crucial technology to the elimination of harmonic voltage.Have a variety of about the reason that causes harmonic voltage, wherein very important a kind of be exactly in the power equipment running, during switch control valve such as novel power device IGBT and the high power switch in the work of equipment, can produce a large amount of harmonic voltages, the component that this harmonic voltage mainly contains 3,5,7,9,11 subharmonic is bigger, harmfulness is the strongest, is that we must consider to eliminate in the power equipment running; Another kind is that the switching of switch in grid equipment can produce a large amount of harmonic voltages equally; Have a kind ofly to be, parameter impedance such as electric capacity does not match in system impedance and circuit, produces very high harmonic voltage yet again.Therefore, bring very high risk hidden danger for the stable operation of circuit; Moreover the useful life of electric capacity itself is also shortened in the existence of harmonic voltage greatly.Existing general solution is to add special filter and large-scale filtering cabinet in circuit, can address these problems though do like this, and cost is higher, and installs and use also inconvenience.

The utility model content

The purpose of this utility model is to overcome the deficiency that above-mentioned prior art exists; and provide a kind of simple in structure, when can support circuit working rapidly effectively absorbing harmonic voltage, moment surge impact voltage and interference noise; stablize operate as normal with protective circuit, and the relatively low combined capacitor of cost.

The purpose of this utility model is achieved in that

The combined capacitor of energy effectively absorbing harmonic voltage, comprise housing, at least one capacitor body, fuse exit and embedding thing, capacitor body is arranged in the housing, the capacitor body two ends are connected with the fuse exit respectively, the fuse exit extends outside the housing, be provided with low capacity, withstand voltage high little electric capacity between the described fuse exit and link to each other, the capacitor body circumfusion in the housing has the embedding thing.The combined capacitor of this structure is by setting up in parallel low capacity, withstand voltage high little electric capacity simply, so that the capacitor of this structure and when linking circuit is supported the operate as normal of circuit between the fuse exit of the two ends of correspondence; This combined capacitor is realized filtering and energy storage supporting role in UPS, frequency converter, electroplating power supply, inverter type welder, inverter, induction heating equipment and conversion switch; As harmonic wave with when moment, surge voltage was impacted, because little electric capacity has the effect of absorbing high-frequency voltage, high order harmonic component is passed through from the little electric capacity of parallel connection, the big electric current of conducting, sponged by little electric capacity, and the capacitor of obstructed excess capacity (capacitor body in the housing) makes jumbo capacitor (capacitor body in the housing) obtain protection, thereby has protected IC or electric equipment; When the operating frequency of capacitor was relatively hanged down, little electric capacity can not influence large value capacitor (capacitor body in the housing) operate as normal, did not influence the operate as normal of device or electric equipment; And because little electric capacity is to the absorption of harmonic voltage, harmonic voltage and surge will reduce greatly the impact of electric capacity and all sponge, and have increased the useful life of capacitor greatly, have protected capacitor and application apparatus.

The purpose of this utility model can also adopt following technical measures to solve:

As scheme more specifically, be provided with the fuse group that constitutes by several capacitor bodies in the described housing, to satisfy big electric capacity use occasion, the two ends of each fuse group are connected with the fuse exit respectively, being provided with low capacity, withstand voltage high little electric capacity between the fuse exit of this group links to each other, this scheme itself can realize effect of the present utility model equally.

As more perfect improvement, each the capacitor body two ends in the described housing are parallel with and all press resistance, and the common formation of each resistance in the housing all presses electric resistor group, all presses resistance in housing, is covered by the embedding thing.

Described low capacity, withstand voltage high little electric capacity can be the little fuses of capacitor, also can be low value capacitors; Little fuse of capacitor or little electric capacity are connected in parallel on the fuse exit at capacitor body two ends; We are by increasing low value capacitor (that is: the little fuse of little electric capacity or capacitor) in large capacitor inside, capacitor according to the different different low capacities in parallel of the capacity of large capacitor, jumbo capacitor volume scope is 100-10000uF, whole small capacitors in parallel, little fuse of capacitor or small capacitor range of capacity in parallel are between the 0.1-40uF, can realize the purpose of this patent.

Described embedding thing is epoxy resin or semi-solid organic substance.

For making things convenient for the capacitor fixed installation, on the lateral wall of described housing, can have additional fixed head, have the fixed installation hole on the fixed head.

The beneficial effects of the utility model are:

(1), combined capacitor of the present utility model, adopt effective combination of large bulk capacitance and low capacity electric capacity, the electric capacity of different capabilities is in the use of circuit, realize different effects, the high voltage signal of capacitor absorption frequency of low capacity, the low signal of jumbo capacitor absorption frequency, it mainly is the ripple signal that produces after the rectification, such combined capacitor, can absorb the high order harmonic component signal simultaneously, can effectively absorb moment surge impact voltage and interference noise rapidly, protective circuit is stablized operate as normal; Moreover, since the capacitor of low capacity to harmonic voltage and moment surge voltage absorption, harmonic voltage and surge will significantly reduce the impact of electric capacity, have increased the useful life of capacitor greatly;

(2), this combined capacitor, also by incorporate combination, install and use more conveniently, reduced cost; The product of being integral of product design, the client is selecting application facet that great convenience is arranged, and standardized component is extensively adopted in the standardization of being more convenient for, and helps promoting the use of of product.

Description of drawings

Fig. 1 is the schematic diagram of the utility model combined capacitor;

Fig. 2 is the vertical view after Fig. 1 removes shell and embedding thing;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the end view of Fig. 2;

Fig. 5 is another embodiment schematic diagram of combined capacitor of the present utility model;

Fig. 6 is the combined capacitor vertical view of Fig. 5.

Embodiment

Embodiment one: as shown in Figures 1 to 4, the combined capacitor of energy effectively absorbing harmonic voltage, comprise housing 1, the fuse group 2-2 that constitutes by several capacitor bodies 2,

fuse exit

3,4 and embedding thing 5, fuse group 2-2 is arranged in the housing 1, each capacitor body two ends connection parallel with one another in the same fuse group 2-2, that is: the two ends of each fuse group 2-2 are connected with fuse exit 3 respectively, 4,

fuse exit

3,4 extend outside the housing 1, described fuse exit 3, be provided with low capacity between 4, withstand voltage high little electric capacity 6 links to each other, described low capacity, withstand voltage high little electric capacity 6 is little fuse of capacitor or low value capacitor, it shown in the present embodiment the little fuse of capacitor, capacitor body 2 circumfusions in the housing 1 have epoxy resin or semi-solid organic embedding thing 5, the lateral wall of housing 1 is provided with fixed head 8, has fixed installation hole 9 on the fixed head 8.Wherein, described low capacity, withstand voltage high little electric capacity 6 can be hidden in the housing 1.

Embodiment two: as shown in Figure 5 and Figure 6, this capacitor is the cylindrical combined capacitor, its structure is similar to embodiment one, difference is: according to the use occasion requirement, each capacitor body 2 two ends in described housing 1 are parallel with a pair of (also can be one) and all press resistance 7, the common formation of each resistance in the housing 1 all presses electric resistor group, all pressing resistance 7 is arranged in the housing 1, see Fig. 5 and shown in Figure 6, wherein, all press resistance 7 surfaces and also can cover one deck embedding thing 5; In addition, shown in Fig. 5 and Fig. 6, be provided with a pair of low capacity, withstand voltage high little electric capacity 6 between the two

fuse exits

3,4, this little electric capacity 6 can be the little fuse of capacitor.

Claims

1. combined capacitor that can effectively absorbing harmonic voltage, comprise housing (1), at least one capacitor body (2), fuse exit (3,4) and embedding thing (5), capacitor body (2) is arranged in the housing (1), capacitor body (2) two ends are connected with fuse exit (3,4) respectively, fuse exit (3,4) extends outside the housing (1), it is characterized in that, be provided with low capacity, withstand voltage high little electric capacity (6) between the described fuse exit (3,4) and link to each other, capacitor body (2) circumfusion in the housing (1) has embedding thing (5).

2. according to the described combined capacitor that can effectively absorbing harmonic voltage of claim 1, be provided with the fuse group (2-2) that constitutes by several capacitor bodies (2) in the described housing (1), the two ends of each fuse group (2-2) are connected with fuse exit (3,4) respectively, are provided with low capacity, withstand voltage high little electric capacity (6) between the fuse exit of this group (3,4) and link to each other.

3. according to claim 1 or 2 described combined capacitors that can effectively absorbing harmonic voltages, each capacitor body (2) two ends in the described housing (1) are parallel with and all press resistance (7), the common formation of each resistance (7) in the housing (1) all presses electric resistor group, all press resistance in housing, covered by the embedding thing.

4. according to the combined capacitor of claim 1 or 2 described energy effectively absorbing harmonic voltages, described low capacity, withstand voltage high little electric capacity (6) are little fuse of capacitor or low value capacitor.

5. according to the combined capacitor of claim 1 or 2 described energy effectively absorbing harmonic voltages, described embedding thing (5) is epoxy resin or semi-solid organic substance.

6. according to the combined capacitor of claim 1 or 2 described energy effectively absorbing harmonic voltages, the lateral wall of described housing (1) is provided with fixed head (8), has fixed installation hole (9) on the fixed head (8).