CN206977303U - Power converter apparatus - Google Patents
Power converter apparatus Download PDFInfo
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- CN206977303U CN206977303U CN201720603741.8U CN201720603741U CN206977303U CN 206977303 U CN206977303 U CN 206977303U CN 201720603741 U CN201720603741 U CN 201720603741U CN 206977303 U CN206977303 U CN 206977303U
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- converter apparatus
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- power converter
- conductor
- protection
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Abstract
A kind of power converter apparatus (10) is disclosed, including：DC voltage circuit, DC voltage circuit includes positive pole (DC+), the electric capacity (13) of negative pole (DC) and connection between a positive electrode and a negative electrode, electric capacity (13) includes at least two partition capacitances (131) being connected in series, and each partition capacitance includes two or more capacitors being connected in parallel；Including substrate and at least one circuit board for being conductively connected pattern being fastened on substrate surface；And include at least one protection device for each capacitor of partition capacitance (131); protection device includes the conductor part being conductively connected in pattern and protection part; conductor part is connected in series with capacitor; and conductor part is adapted for flowing through the electric current of conductor part and exceedes scheduled current limits value and disconnected up to scheduled duration, protection part so that conductor part be located at circuit board substrate and protection portion divide between mode be secured to the top of conductor part.
Description
Technical field
The present invention relates to power converter apparatus.
Background technology
When between such as two power systems transmit electric energy when, power converter apparatus, for example, rectifier, inverter,
Frequency changer or DC (direct current)/DC converters are used to change electric power.Will for example, can be changed by converter apparatus
The voltage and/or frequency of the electric energy of transmission.For example, electric energy can be transferred to power consumption system from electrical power generation system, and
And simultaneously, caused electric energy can be modified to apply to the form of consumption system.
Such power converter apparatus can include DC circuit, and wherein electric capacity is connected the positive pole of the DC circuit
Between negative pole.For frequency changer for example including at least two converters, rectifier and inverter, existing between which can be with
Further comprise the direct-flow intermediate circuit of electric capacity.Involved electric capacity can include two or more part electricity being connected in series
Hold, each in partition capacitance can include two or more capacitors being connected in parallel.
If short circuit occurs for one or more of capacitor, will connected so as to the whole voltage of direct-flow intermediate circuit
Had an impact on one or more of unspoiled capacitor of connection, the voltage could possibly be higher than described all not to be damaged up to now
The rated voltage of bad one or more capacitors, then there may be (such as exemplary with power converter apparatus
Inverter) in such electric capacity it is relevant the problem of.As a result, one or more of the capacitor that do not damage of series connection may generation
Breakdown, has potential catastrophic effect.Due to such breakdown, it is not only possible to the converter apparatus of reality is caused damage,
May also be to being caused damage around converter apparatus.In order to prevent such case, certification to power converter apparatus can be with
It is required that the short circuit of one of capacitor in the direct current capacitors being connected in series in test case does not influence the outside of equipment.Due to
The uncertain behavior of the converter apparatus as caused by fault mechanism, it is in cost-effective manner difficult by this test
's.On the other hand, the specific protection device for this short-circuit conditions is held because of the structure of the requirement of its large space and/or complexity
Easily become expensive.
The content of the invention
It is an object of the invention to provide a kind of equipment in order to cause issue noted above to be solved or at least subtracted
Gently.The purpose of the present invention is reached by power converter apparatus, the content being characterised by disclosed in independent claims.This hair
Bright preferred embodiment is disclosed in the dependent claims.
The present invention is based on converter apparatus, for each capacitor of the partition capacitance of the electric capacity in DC circuit, the change
Converter device includes at least one protection device, and the protection device includes the conductor part being conductively connected in pattern, the conductor portion
Divide and be connected in series with involved capacitor, and the conductor part is adapted for flowing through the electric current of conductor part more than predetermined
Current limit value disconnects up to scheduled duration.In addition, protection device includes protection part, the protection part is so as to obtain the conductor
Mode of the part between circuit board substrate and protection portion point is secured to the top of the conductor part.
It is that it provides the protection solution for occupying small space according to the advantage of the solution of the present invention, and
It is economical for the short-circuit conditions in the capacitor of converter apparatus.
Brief description of the drawings
By preferred embodiment and the present invention will be described in greater detail with reference to the attached drawings now, wherein
Fig. 1 shows the block diagram of the power converter apparatus according to embodiment；
Fig. 2 shows the circuit diagram of the direct-flow intermediate circuit of the power converter apparatus according to embodiment；
Fig. 3 shows the protection device according to embodiment；With
Fig. 4 shows the circuit diagram of the direct-flow intermediate circuit of the power converter apparatus according to embodiment.
Embodiment
The present invention can usually apply in combination with different types of power converter apparatus.Such power converter
Device equipment can be rectifier, inverter, frequency changer or DC to DC converter.The use of the present invention is not limited to appoint
The quantity of what certain types of equipment or particular voltage levels, the frequency of voltage or phase.
According to embodiment, power converter apparatus includes DC voltage circuit and at least one circuit board, the direct current
Volt circuit includes positive pole, negative pole and connected electric capacity between a positive electrode and a negative electrode, and the electric capacity includes at least two be connected in series
Individual partition capacitance, and each partition capacitance includes two or more capacitors being connected in parallel, at least one circuit board
Including substrate and it is fastened on the surface of substrate and is conductively connected pattern.For each capacitor of partition capacitance, conversion
Device equipment further comprises at least one protection device, and at least one protection device includes the conductor portion being conductively connected in pattern
Point, the conductor part is connected in series with capacitor, and the conductor part is adapted for flowing through the electric current of conductor part and exceeded
Scheduled current limits value disconnects up to scheduled duration.In addition, protection device includes protection part, the protection part is so as to obtain conductor
Mode of the part between circuit board substrate and protection portion point is secured to the top of conductor part.
Fig. 1 shows the example of the main circuit of the power converter apparatus of above-described embodiment, and main circuit is in this illustration
Frequency changer 10, it include rectifier 11, inverter 12 and between both it is straight with positive pole DC+ and negative pole DC-
Flow intermediate circuit.Further, direct-flow intermediate circuit includes at least one electric capacity 13, and at least one electric capacity 13 is connected to positive pole
Between DC+ and negative pole DC-, and at least two partition capacitances 131 including being connected in series.
According to embodiment, partition capacitance 131 each includes two or more capacitors being connected in parallel.Fig. 2 shows
Go out the circuit diagram of the direct-flow intermediate circuit of the power converter apparatus 10 according to embodiment.In exemplary figure, electric capacity 13 wraps
Two partition capacitances 131 are included, two partition capacitances 131 include two capacitor C being connected in parallel.However, partition capacitance
Capacitor C quantity can be different from Fig. 2 example in 131 quantity and partition capacitance 131.Further, for part
Each capacitor C of electric capacity 131, Fig. 2 example include a protection device 20, to cause each capacitor C protection device
20 are always connected in series with involved capacitor, and in other words, common current always flows through each capacitor C and series connection with it connects
The protection device 20 connect.In Fig. 2 example, by the protection device 20 of the partition capacitance 131 on top and capacitor C negative pole
(relatively low in figure) connection and by the protection device 20 of the partition capacitance 131 of bottom and capacitor C positive pole (in figure higher)
Connection can be helpful, and therefore, in converter apparatus, protection device 20 can be physically close to each other.However, it can replace
Dai Di, the protection device 20 or some of which of the partition capacitance 131 on top can be connected with capacitor C positive pole, and/or
The protection device 20 or some of which of the partition capacitance 131 of bottom can be connected with capacitor C negative pole.
Fig. 3 shows the example of the protection device 20 according to embodiment.The figure shows the printed circuit board (PCB) of converter apparatus
100, including substrate 101 and be fastened to the surface of substrate 101 and be conductively connected pattern 102.Can for example, being conductively connected pattern 102
To be metal or alloy, such as copper.Substrate 101 is valuably non-conducting material, such as plastic material.Converter apparatus
10 can include multiple circuit boards 100.As shown in FIG., capacitor C is suitably connected to connecting pattern by its terminal
102.According to embodiment, protection device 20 includes the conductor part 21 being conductively connected in pattern 102, the conductor part 21 and electric capacity
C is connected in series, and the conductor part 21 is adapted for flowing through the electric current of conductor part and exceedes scheduled current limits value up to pre-
Timing is long and disconnects.According to this point, as shown in Fig. 3 example, conductor part 21 is preferably suitably weakened, to cause
It disconnects in response to flowing through the electric current of conductor part more than scheduled current limits value up to scheduled duration.The scheduled current limitation
Value and scheduled duration depend on the characteristic of converter apparatus, and can valuably be designed so that conductor part in converter
Maintain and do not turn off in the normal use of equipment, but disconnected under the short-circuit conditions of associated capacitor.Can be by making
The one or more regions 21 being connected in series with the electric capacity C in the connecting pattern 102 of circuit board 100 are narrower and/or thinner next real
Existing such weakening.Therefore, in the figure 2 example, conductor part 21 be connected in each protection device 20 its electric terminal it
Between.Fig. 3 further shows to protect the example of part 22, and the protection part 22 is to cause the conductor part 21 to be located at circuit board base
Mode between bottom 101 and protection part 22 is secured to the top of the conductor part 21.In the one or more of electric capacity 13
In the case of capacitor C failure, event that is being generated and flowing through the conductor part 21 being connected in series with involved capacitor
Hinder the ability to bear that electric current exceeds conductor part 21, cause conductor part 21 to blow (blow).Mechanical protection part 22 is quick simultaneously
Controllably extinguish generated electric arc, and prevent other local further infringements in converter apparatus 10.Therefore, protection is passed through
Device 20, infringement can be limited, and trouble unit can isolate in a controlled manner.
According to embodiment, protection part 22 contacts with the conductor part 21, and fully covers it.In such case
Under, protection part 22 is covered due to fault current and caused electric arc as broadly as possible.Further, according to embodiment, protect
Shield part 22 is pressed to the conductor part 21.By pressing protection part 22 to the conductor part 21, part is protected
Effect can be further enhanced.Protect part 22 can for example, by one or more fastener (not shown)s and by
It is fastened to the conductor part and/or circuit board 100.If desired, fastener can be press device, such as screw clamp
Tool, the pressing force to the conductor part 21 can also be realized by the press device.Fastener can also be other types
Fastening apparatus.10008 additionally or alternatively, adhesive can be used to protection part 22 being fastened on the conductor part 21
On.According to embodiment, protection part 22 is elastomeric material.This elastomeric material may, for example, be rubber or rubber composition.Bullet
Property material advantage be that it is flexible and therefore preferably allows conductor part 21 to blow and simultaneously effective extinguishing is given birth to
Into electric arc.
According to embodiment, the conductor part 21 includes a conductor or two or more conductors being connected in parallel.Enter
One step, according to embodiment, the conductor part 21 is connected with capacitor C terminal.Further, it is described according to embodiment
Conductor part 21 can be formed the hot blast welding disk pattern (thermal relief pattern) being connected with pad, wherein electricity
Container C is connected to the pad.Fig. 4 shows the example for this hot blast welding disk pattern being connected with pad.In the example of figure,
Hot blast welding disk pattern is formed on around the hole 103 of pad, with cause pad further by four be connected in parallel narrow lead
Body 210 and be connected to the remainder of the connecting pattern 102 of circuit board 100.Therefore, moved at hole 104 around pad
Except conductive material.By suitably setting the size of conductor 210, conductor 210 can be used to form the conductor part 210.
In this case, when one of capacitor C terminals for passing through it are connected with such pad, can make to be made up of conductor 210
Conductor part and capacitor C in series.In this illustration, protection part 22 can be formed disk, the disk by its
Body is arranged on around hole 103 and covers conductor 210.It should be noted that the shape of hot blast welding disk pattern can change and can
To deviate from the content shown in figure, and the quantity of conductor therein 210 for example can be from one to multiple changes.
Those skilled in the art can have found that following is obvious：With advances in technology, basic thought of the invention
It can realize in a number of different ways.Therefore the present invention and its embodiment are not limited to above-mentioned example, but can be
Change in the range of claim.
Claims (9)
1. a kind of power converter apparatus, including：
DC voltage circuit, including positive pole (DC+), negative pole (DC-) and the electricity being connected between the positive pole and the negative pole
Hold (13), the electric capacity (13) includes at least two partition capacitances (131) being connected in series, and each partition capacitance is included simultaneously
Join two or more capacitors (C) of connection；And
At least one circuit board (100), including substrate (101) and be fastened on the surface of the substrate and be conductively connected pattern
(102), it is characterised in that for each capacitor (C) of the partition capacitance (131), converter apparatus (10) bag
At least one protection device (20) is included, the protection device (20) includes：
The conductor part (21) being conductively connected in pattern, the conductor part are connected in series with the capacitor (C), and
The electric current that the conductor part (21) is adapted for flowing through the conductor part reaches scheduled duration more than scheduled current limits value
And disconnect；And
Protection part (22), it is described to protect part (22) to cause the conductor part (21) to be located at the circuit board substrate
(101) mode between the protection part (22) is secured to the top of the conductor part.
2. power converter apparatus as claimed in claim 1, it is characterised in that the protection part (22) and the conductor portion
Divide (21) contact, and fully cover the conductor part (21).
3. power converter apparatus as claimed in claim 2, it is characterised in that the protection part (22) is by the conductor
Partly (21) press.
4. the power converter apparatus as described in claim 1,2 or 3, it is characterised in that the conductor part (21) includes one
Individual conductor, or two or more conductors being connected in parallel.
5. power converter apparatus as claimed in claim 4, it is characterised in that the conductor part (21) and the capacitor
(C) terminal connection.
6. power converter apparatus as claimed in claim 5, it is characterised in that the conductor part (21) is at pad by shape
As hot blast welding disk pattern, wherein the capacitor (C) is connected to the pad.
7. the power converter apparatus as described in claim 1,2 or 3, it is characterised in that the protection part (22) is by elasticity
Material is made.
8. power converter apparatus as claimed in claim 7, it is characterised in that the protection part (22) is by rubber or rubber
Mixture is made.
9. the power converter apparatus as described in claim 1,2 or 3, it is characterised in that the converter apparatus (10) is frequency
Rate converter, rectifier, inverter or DC to DC converter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FIU20164128U FI11307U1 (en) | 2016-06-02 | 2016-06-02 | Electronic converter device |
| FIU20164128 | 2016-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206977303U true CN206977303U (en) | 2018-02-06 |
Family
ID=56612455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720603741.8U Active CN206977303U (en) | 2016-06-02 | 2017-05-26 | Power converter apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206977303U (en) |
| FI (1) | FI11307U1 (en) |
-
2016
- 2016-06-02 FI FIU20164128U patent/FI11307U1/en active IP Right Grant
-
2017
- 2017-05-26 CN CN201720603741.8U patent/CN206977303U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FI11307U1 (en) | 2016-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181122 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Helsinki Patentee before: ABB T & D Technology Ltd. |