CN203734086U - AC copper bar - Google Patents
AC copper bar Download PDFInfo
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- CN203734086U CN203734086U CN201420063596.5U CN201420063596U CN203734086U CN 203734086 U CN203734086 U CN 203734086U CN 201420063596 U CN201420063596 U CN 201420063596U CN 203734086 U CN203734086 U CN 203734086U
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- length
- oval hole
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- line
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Abstract
The utility model discloses an AC copper bar. A first waist circular hole and two second waist circular holes are formed on one end board, a center of the first waist circular hole is arranged on a central axis of the end board, a straight edge is perpendicular to the central axis, a distance from the straight edge to an edge of the end board is 23.5mm, an arc diameter of the first waist circular hole is 5-6mm, a length scope of the first waist circular hole is the first length to the length acquired through substracting 4 from the first length, the two second waist circular holes are respectively arranged at two sides of the central axis, a distance from a straight edge of the second waist circular holes to the edge of the end board is 17mm, an arc diameter of the second waist circular holes is 5-6mm, and length of the second waist circular holes is 16.5-19.5mm. The AC copper bar settles a disadvantage of impedance inconsistency at an AC output end of an AC copper bar connected in parallel with an IGBT module, realizes re-distribution of current paths through a hole digging mode on the AC copper bar, settles a problem of a non-uniform current phenomenon caused by impedance inconsistency and satisfies industrial demands.
Description
Technical field
The utility model relates to a kind of AC copper-line.
Background technology
Along with the fast development of power electronic technology, the large capacity development of frequency converter forward.At present often adopting multiple IGBT(insulated gate bipolar transistors) module is directly parallel on AC copper-line to improve the power grade of frequency converter.But the parallel connection of multiple IGBT module exists electric current to distribute uneven phenomenon, seriously restricts the development of big-power transducer.Uneven reason is relevant with the inconsistency of the parameter of IGBT module own on the one hand, on the other hand with drive the asynchronous relevant of signal, then to have be exactly inconsistent relevant with the AC and DC copper bar impedance parameter of the direct parallel connection of IGBT module.
For the existing AC copper-line 1 for three groups of IGBT modules in parallel, referring to Fig. 1 and Fig. 2, described AC copper-line is symmetrical structure, comprises one first end plate 11 and second end plate 12 being fixedly connected with described the first end plate 11, and described the first end plate 11 adopts one-body molded with described the second end plate 12.Described the first end plate 11 is round rectangle, one side of described the first end plate 11 is for the ac terminal of three groups of IGBT modules in parallel, and the ac terminal of described three groups of IGBT modules is arranged on described the first end plate 11 by circular hole 111 and 112, circular hole 113 and 114, circular hole 115 and 116 respectively.Point-blank, described straight line parallel is the edge 117 near a side of circular hole 111-116 in described the first end plate 11 at the center of circular hole 111-116.Described the second end plate 12 is with the rectangle of 90 degree bendings, and a side of described the second end plate 12 is used for connecting load, and described load is arranged on described the second end plate 12 by circular hole 121 and 122, and the opposite side of described the second end plate 12 is fixedly connected with described the first end plate 11.
When described AC copper-line 1 and load, three groups of IGBT modules are connected and while accessing electric power system, it is the alternating current that 50Hz and stack ripple are 2kHz to 4kHz that described AC copper-line 1 flows through first-harmonic.The stray inductance of described AC copper-line 1 is relevant with the frequency of fundamental current component, and frequency is while being only 50Hz, and described stray inductance is very little, negligible, and the dead resistance of described AC copper-line 1 becomes the principal element of the current-sharing of the described AC copper-line 1 of impact.Due to the current path difference of each IGBT module connection, thereby cause the unbalanced degree of impedance high, can not reach the effect of current-sharing.
The existing AC copper-line 2 for four groups of IGBT modules in parallel, referring to Fig. 3, basic identical with AC copper-line 1 structure for three groups of IGBT modules in parallel, difference is, one side of the first end plate 21 of AC copper-line 2 is for the ac terminal of four groups of IGBT modules in parallel, and the ac terminal of described four groups of IGBT modules is arranged on described the first end plate 21 by circular hole 211 and 212, circular hole 213 and 214, circular hole 215 and 216, circular hole 217 and 218 respectively.After described AC copper-line 2 is connected with load, four groups of IGBT modules, there is equally the high problem of the unbalanced degree of impedance, affected the power grade of frequency converter.
Utility model content
The technical problems to be solved in the utility model is in order to overcome the inconsistent defect of existing AC copper-line output impedance, provides a kind of unbalanced degree of output impedance low, has processed simple AC copper-line.
The utility model solves the problems of the technologies described above by following technical proposals:
A kind of AC copper-line, one side of an one end plate is for the ac terminal of three groups of IGBT modules in parallel, the ac terminal of every group of IGBT module is arranged on described end plate by two circular holes respectively, is characterized in, is formed with one first oval hole and two the second oval holes on described end plate, described the first oval hole be centered close to described end plate near on the axis at the edge of a side of described circular hole and the straight flange in described the first oval hole perpendicular to described axis, described the first oval hole is 23.5 millimeter to described end plate near the distance at the edge of a side of described circular hole near the straight flange of described circular hole, the scope of the diameter of the circular arc on the both sides in described the first oval hole is 5 to 6 millimeters, the length that the length of the straight flange in described the first oval hole adds the above diameter is less than or equal to one first length and deducts 1 millimeter and be more than or equal to described the first length and deduct 4 millimeters, the centre-to-centre spacing sum of described the first length two circular holes that to be the centre-to-centre spacing of two circular holes for one group of IGBT module is set adjacent with four circular holes for two groups of adjacent IGBT modules are set, two described the second oval holes lay respectively at the both sides of described axis, the straight flange in described the second oval hole is perpendicular to described axis, described the second oval hole is 17 millimeter to described end plate near the distance at the edge of a side of described circular hole near the straight flange of described circular hole, the vertical range perpendicular between the axis of described straight flange and the axis of described AC copper-line in described the second oval hole equals 1/2 of the length of diameter of the circular arc on the both sides in described the first oval hole and the length sum of the straight flange in described the first oval hole and adds a predetermined constant, the scope of described predetermined constant is 13.75 to 15.25 millimeters, the scope of the diameter of the circular arc on the both sides in described the second oval hole is 5 to 6 millimeters, the scope that the length of the straight flange in described the second oval hole adds the length of the diameter of the circular arc on the both sides in the above the second oval hole is 16.5 to 19.5 millimeters.
Described AC copper-line is being provided with behind described the first oval hole, the second oval hole, there is variation in shape, thereby make the path of the electric current flowing through that variation also occur, after testing, the unbalanced degree of impedance of described AC copper-line, in 4%, has met the requirement of the impedance unbalanced degree of power equipment to AC copper-line.In addition, it should be noted that, the material of described AC copper-line is not merely copper, and those skilled in the art know, also needs through the insulation processing such as zinc-plated, to press for the AC copper-line surface of IGBT module is set.
Preferably, the length that the length of the straight flange in described the first oval hole adds the above diameter is less than or equal to described the first length and deducts 1 millimeter and be more than or equal to described the first length and deduct 3 millimeters.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is in 3%.
Preferably, the length that the length of the straight flange in described the first oval hole adds the above diameter is less than or equal to described the first length and deducts 1 millimeter and be more than or equal to described the first length and deduct 2 millimeters.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is in 2%.
Preferably, the length that the length of the straight flange in described the first oval hole adds the above diameter equals described the first length and deducts 1 millimeter.After testing, the length that the length that the unbalanced degree of the impedance of the AC copper-line of the technical program is more better than the straight flange in described the first oval hole adds the above diameter is less than or equal to described the first length and deducts 1 millimeter and be more than or equal to the technical scheme that described the first length deducts 2 millimeters.
Preferably, to add the scope of the length of the diameter of the circular arc on the both sides in the above the second oval hole be 18.5 to 19.5 millimeters to the length of the straight flange in described the second oval hole.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is in 3%.
Preferably, the length that the length of the straight flange in described the second oval hole adds the diameter of the circular arc on the both sides in the above the second oval hole equals 19.5 millimeters.After testing, the unbalanced degree of the impedance of the AC copper-line of the technical program is in 2%.
Preferably, the diameter of the circular arc on the both sides in the diameter of the circular arc on the both sides in described the first oval hole and described the second oval hole is 6 millimeters.The unbalanced degree of impedance of the AC copper-line of the technical program is minimum.
Meeting on the basis of this area general knowledge, above-mentioned each optimum condition, can combination in any, obtains the each preferred embodiment of the utility model.
A kind of AC copper-line, a side of an one end plate is for the ac terminal of four groups of IGBT modules in parallel, and the ac terminal of every group of IGBT module is arranged on described end plate by two circular holes respectively, is characterized in, is formed with one the 3rd oval hole on described end plate, described the 3rd oval hole be centered close to described end plate near on the axis at the edge of a side of described circular hole and the straight flange in described the 3rd oval hole perpendicular to described axis, described the 3rd oval hole is 23.5 millimeter to described end plate near the distance at the edge of a side of described circular hole near the straight flange of described circular hole, the scope of the diameter of the circular arc on the both sides in described the 3rd oval hole is 5 to 6 millimeters, the length that the length of the straight flange in described the 3rd oval hole adds the arc diameter on the above the 3rd both sides, oval hole equals 2 times of centre-to-centre spacing sum of two circular holes that the centre-to-centre spacing of two circular holes for one group of IGBT module is set is adjacent with four circular holes for two groups of adjacent IGBT modules are set.
Described AC copper-line is being provided with behind described the 3rd oval hole, and variation has occurred shape, thereby makes the path of the electric current flowing through that variation also occur.After testing, the unbalanced degree of the impedance of described AC copper-line has met the requirement of the impedance unbalanced degree of power equipment to AC copper-line.
Preferably, the diameter of the circular arc on the both sides in described the 3rd oval hole is 6 millimeters.The unbalanced degree of impedance is now minimum.
Positive progressive effect of the present utility model is: the utility model is by the mode redistribution current path of borehole on an end plate of AC copper-line, the impedance that realizes three groups or four groups IGBT module ac output ends in parallel is consistent, thereby solve the inconsistent uneven flow phenomenon bringing of impedance, met industrial requirement.AC copper-line of the present utility model also has advantages of that processing is simple, is applicable to batch production.
Brief description of the drawings
Fig. 1 is the stereogram of the existing AC copper-line for three groups of IGBT modules in parallel.
Fig. 2 is the front view of the existing AC copper-line for three groups of IGBT modules in parallel.
Fig. 3 is the front view of the existing AC copper-line for four groups of IGBT modules in parallel.
Fig. 4 is the stereogram of the AC copper-line for three groups of IGBT modules in parallel of the utility model embodiment 1.
Fig. 5 is the front view of the AC copper-line for three groups of IGBT modules in parallel of the utility model embodiment 1.
The structural representation of AC copper-line when Fig. 6 is the emulation of the utility model embodiment 1.
Fig. 7 is the front view of the AC copper-line for four groups of IGBT modules in parallel of the utility model embodiment 2.
Embodiment
Embodiment 1
Referring to Fig. 4 and Fig. 5, the AC copper-line 1 ' of the present embodiment is to obtain after one first oval hole and two the second oval holes are set on the first end plate 11 of existing AC copper-line 1, and the shape and structure of existing AC copper-line 1 has been illustrated in background technology, therefore repeat no more, supplement relevant design parameter (part identical with described AC copper-line 1 and that marked of the AC copper-line 1 ' in figure is continued to use the Reference numeral in Fig. 1 and Fig. 2) at this in Fig. 1 and Fig. 2.
The length of described the first end plate 11 in the axis direction perpendicular to described AC copper-line 1 ' is 139 millimeters, is 40 millimeters in the length being parallel in the direction of described axis, and thickness is 5 millimeters.The diameter of circular hole 111-116 is 6.5 millimeters, and the centre-to-centre spacing of circular hole 111 and 112, circular hole 113 and 114, circular hole 115 and 116 is 22 millimeters, and the centre-to-centre spacing of circular hole 112 and 113, circular hole 114 and 115 is 28 millimeters.The end face that is parallel to described the first end plate 11 after described the second end plate 12 bendings is 80 millimeters in the length being parallel in the direction of described axis, is being 40 millimeters perpendicular to the length width in the direction of described axis, and thickness is 5 millimeters.The diameter of circular hole 121 and 122 is 9 millimeters, and both centre-to-centre spacing is 22 millimeters, and both centers are 15 millimeters to the distance of the face 123 ' that confluxes of described the second end plate 12.
The following describes the described first oval hole 118 ' of described AC copper-line 1 ' and position and the size in two described the second oval holes 119 '.
Referring to Fig. 4 and Fig. 5, described the first oval hole 118 ' be centered close to described the first end plate 21 near on the axis at the edge 117 of a side of circular hole 111-116 and the straight flange in described the first oval hole 118 ' perpendicular to described axis.Described the first oval hole 118 ' is 23.5 millimeters near the straight flange of circular hole 111-116 to the distance at described edge 117.The diameter D of the circular arc on the both sides in described the first oval hole 118 '
1be 6 millimeters, the L in described the first oval hole 118 '
1length equal one first length and deduct 1 millimeter, wherein, L
1for the length of the straight flange in described the first oval hole 118 ' adds the above diameter D
1the centre-to-centre spacing of described the first length two circular holes that to be the centre-to-centre spacing of two circular holes for one group of IGBT module is set adjacent with four circular holes for two groups of adjacent IGBT modules are set, for the present embodiment, described the first length equals circular hole 111 and equals 50 millimeters, i.e. the L in described the first oval hole 118 ' with the centre-to-centre spacing of circular hole 113
1equal 49 millimeters.
Two described the second oval holes 119 ' lay respectively at the both sides of described axis, and the straight flange in described the second oval hole 119 ' is perpendicular to described axis.Described the second oval hole 119 ' is 17 millimeters near the straight flange of circular hole 111-116 to the distance at the edge 117 of described the first end plate 11.The vertical range perpendicular between the axis of described straight flange and the axis of described AC copper-line 1 ' in described the second oval hole 119 ' equals the diameter D of the circular arc on the both sides in described the first oval hole 118 '
1add a predetermined constant with 1/2 of the length sum of the straight flange in described the first oval hole 118 ', the scope of wherein said predetermined constant is 13.75 to 15.25 millimeters, the predetermined constant value of the present embodiment is 13.75 millimeters, so, the vertical range perpendicular between the axis of described straight flange and the axis of described AC copper-line 1 ' in the second oval hole 119 ' described in the present embodiment equals 38.25 millimeters.The diameter D of the circular arc on the both sides in described the second oval hole 119 '
2be 6 millimeters, the L in described the second oval hole 119 '
2be 19.5 millimeters, L
2for the length of the straight flange in described the second oval hole 119 ' adds the diameter D of the circular arc on the both sides in the above the second oval hole 119 '
2.
Those skilled in the art know, be not often to adopt the direct method that is linked into electrical network or other electric power system to detect the unbalanced degree of impedance of AC copper-line in the prior art, this is because the operation that this method cost is high, difficulty greatly, easily affects miscellaneous equipment.The unbalanced method of impedance of general detection AC copper-line is to adopt LCR electric bridge (a kind of method for inductance measuring, electric capacity, resistance, impedance that uses microprocessor technology) to measure, but in view of LCR table (a kind of instrument for inductance measuring, electric capacity, resistance, impedance) certainty of measurement is had relatively high expectations, general being difficult to measured accurately.Adopt MAXWELL software (a kind of finite element analysis software is usually used in the analysis of the aspects such as ac/dc magnetic field, electrostatic field and transient electromagnetic field) to carry out electrostatic field emulation to AC copper-line.
Concrete, the emulation mode of the AC copper-line 1 ' of the present embodiment is: the direct current that applies 300A on the described face 123 ' that confluxes is as driving source; By being set on AC copper-line 1 ', the mode of copper sheet detects the electric current that flows into the upper IGBT module arranging of circular hole 111-116, for example, referring to Fig. 6, on circular hole 111-116, paste respectively a foursquare copper sheet 111 '-116 ', all there is a circular hole identical with described circular hole 111 sizes at the center of each described copper sheet, copper sheet 111 '-116 ' respectively with the center-aligned of circular hole 111-116, and copper sheet 111 '-116 ' do not contact mutually.Like this, described driving source has been simulated the load in practical application, and the electric current that flows through each copper sheet is the electric current that flows into each IGBT module.Flow through the electric current of copper sheet 111 '-116 ' by measurement, calculate the unbalanced degree of impedance of AC copper-line 1 ', obtain following result:
Table 1
Wherein, the unbalanced degree of impedance=(flow through the electric current of a copper sheet-flow through the mean value of the electric current of all copper sheets)/(flowing through the mean value of the electric current of all copper sheets), takes absolute value.
As can be seen from Table 1, as the D in described the first oval hole 118 '
1=6 millimeters, L
1=49 millimeters, the D in described the second oval hole 119 '
2=6 millimeters, L
2=19.5 millimeters time, the unbalanced degree of impedance of AC copper-line 1 ' is in 2%, illustrate completely different from the current path on existing AC copper-line 1, current path on described AC copper-line 1 ' is subject to the impact in the first oval hole 118 ' and the second oval hole 119 ', be reallocated, make the impedance of ac output end of three groups of in parallel IGBT modules consistent, solved the inconsistent uneven flow phenomenon bringing of impedance, met industrial requirement.
On the basis of AC copper-line 1 ', adjust the D in described the first oval hole 118 '
1length, adopt same test environment measurement to flow through the electric current of copper sheet 111 '-116 ', the unbalanced degree of impedance calculating, obtains following result:
Table 2
Associative list 1 and table 2 can be found out, as the D in described the first oval hole 118 '
1in the time of 5 to 6 millimeters, the unbalanced degree of impedance of AC copper-line 1 ', in 3%, can make the impedance of ac output end of three groups of in parallel IGBT modules consistent equally, but D
1effect=5 millimeters time is not as D
1effect=6 millimeters time, and D
1the unbalanced degree of impedance=4 millimeters time has even exceeded 4%, can not ensure that the impedance of ac output end of three groups of in parallel IGBT modules is consistent.
On the basis of AC copper-line 1 ', adjust the L in described the first oval hole 118 '
1length, adopt same test environment measurement to flow through the electric current of copper sheet 111 '-116 ', the unbalanced degree of impedance calculating, obtains following result:
Table 3
Associative list 1 and table 3 can be found out, as the L in described the first oval hole 118 '
1in the time of 48 millimeters to 49 millimeters, the unbalanced degree of impedance of AC copper-line 1 ' is also in 2%, and the impedance that can reach equally the ac output end that makes three groups of IGBT modules in parallel is consistent.As the L in described the first oval hole 118 '
1in the time of 47 millimeters to 49 millimeters, the unbalanced degree of impedance is in 3%.As the L in described the first oval hole 118 '
1in the time of 46 millimeters to 49 millimeters, the unbalanced degree of impedance is in 4%.But work as L
1the unbalanced degree of impedance=45 millimeters time has even exceeded 4%, can not ensure that the impedance of ac output end of three groups of in parallel IGBT modules is consistent.
On the basis of AC copper-line 1 ', adjust the D in described the second oval hole 119 '
2length, adopt same test environment measurement to flow through the electric current of copper sheet 111 '-116 ', the unbalanced degree of impedance calculating, obtains following result:
Table 4
Associative list 1 and table 4 can be found out, as the D in described the second oval hole 119 '
2in the time of 5 to 6 millimeters, the unbalanced degree of impedance of AC copper-line 1 ', in 4%, can make the impedance of ac output end of three groups of in parallel IGBT modules consistent equally, but D
2effect=5 millimeters time is not as D
2effect=6 millimeters time, and D
2the unbalanced degree of impedance=4 millimeters time has exceeded 4%, can not ensure that the impedance of ac output end of three groups of in parallel IGBT modules is consistent.
On the basis of AC copper-line 1 ', adjust the L in described the second oval hole 119 '
2length, adopt same test environment measurement to flow through the electric current of copper sheet 111 '-116 ', the unbalanced degree of impedance calculating, obtains following result:
Table 5
Associative list 1 and table 5 can be found out, as the L in described the second oval hole 119 '
2in the time of 18.5 millimeters to 19.5 millimeters, the unbalanced degree of impedance of AC copper-line 1 ' can ensure in 3%.As the L in described the second oval hole 119 '
2in the time of 16.5 millimeters to 19.5 millimeters, the unbalanced degree of impedance is in 4%.But work as L
2while being less than 16.5 millimeters, the unbalanced degree of impedance has exceeded 4%, can not ensure that the impedance of ac output end of three groups of in parallel IGBT modules is consistent.
In sum, D
1at 5 millimeters to 6 millimeters, L
1at 46 millimeters to 49 millimeters, D
2at 5 millimeters to 6 millimeters and L
2in the time of 16.5 millimeters to 19.5 millimeters, the unbalanced degree of impedance of AC copper-line 1 ' is in 4%.
In above-mentioned scope further by L
1be adjusted into 47 millimeters to 49 millimeters, and/or, L
2while being adjusted into 18.5 millimeters to 19.5 millimeters, the unbalanced degree of impedance of AC copper-line 1 ' is in 3%.
Again in above-mentioned scope further by D
1be adjusted into 6 millimeters, and/or, L
1be adjusted into 48 millimeters to 49 millimeters, and/or, D
2be adjusted into 6 millimeters, and/or, L
2while being adjusted into 19.5 millimeters, the unbalanced degree of the impedance of AC copper-line 1 ' is in 2%.
The wherein most preferred D that is combined as
1=6 millimeters, L
1=49 millimeters, and/or, D
2=6 millimeters, and/or, L
2=19.5 millimeters, the unbalanced degree of impedance is now minimum.
Can be found out by the present embodiment, the utility model is by the mode of borehole on existing AC copper-line, and redistribution current path, makes the impedance of the each ac output end of IGBT module in parallel consistent, has good practical function.
Embodiment 2
Referring to Fig. 7, the AC copper-line 2 ' of the present embodiment is to obtain after one the 3rd oval hole 23 ' being set on the first end plate 21 of existing AC copper-line 2, and the shape and structure of existing AC copper-line 2 has been illustrated in background technology, therefore repeat no more, supplement relevant design parameter (part that the AC copper-line 2 ' in figure is identical with described AC copper-line 2 is continued to use the Reference numeral in Fig. 3) at this.
The length of described the first end plate 21 in the axis direction perpendicular to described AC copper-line 2 ' is 189 millimeters.Described the 3rd oval hole 23 ' be centered close to described the first end plate 21 near on the axis at the edge 219 of a side of circular hole 211-218 and the straight flange in described the 3rd oval hole 23 ' perpendicular to described axis.Described the 3rd oval hole 23 ' is 23.5 millimeters near the straight flange of circular hole 211-218 to the distance at described edge 219, the scope of the diameter of the circular arc on 23 ' both sides, described the 3rd oval hole is 5 to 6 millimeters, the length that the length of the straight flange in described the 3rd oval hole 23 ' adds the arc diameter on the above 23 ' both sides, the 3rd oval hole equals 2 times of centre-to-centre spacing sum of two circular holes that the centre-to-centre spacing of two circular holes for one group of IGBT module is set is adjacent with four circular holes for two groups of adjacent IGBT modules are set, equal the centre-to-centre spacing of circular hole 212 and circular hole 216, namely equal 100 millimeters.
AC copper-line 2 ' to the present embodiment adopts MAXWELL software to carry out electrostatic field emulation, emulation mode is with embodiment 1, current path on described AC copper-line 2 ' is subject to the impact in the 3rd oval hole 23 ', be reallocated, make the impedance of ac output end of four groups of in parallel IGBT modules consistent, solved the inconsistent uneven flow phenomenon bringing of impedance, concrete emulation mode is similar to the AC copper-line 1 ' in embodiment 1 with result, does not repeat them here.
Wherein, when the diameter of the circular arc on the both sides in described the 3rd oval hole 23 ' is 6 millimeters, the unbalanced degree of impedance is minimum.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection range of the present utility model is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present utility model and essence, can make various changes or modifications to these execution modes, but these changes and amendment all fall into protection range of the present utility model.
Claims (9)
1. an AC copper-line, one side of an one end plate is for the ac terminal of three groups of IGBT modules in parallel, the ac terminal of every group of IGBT module is arranged on described end plate by two circular holes respectively, it is characterized in that, is formed with one first oval hole and two the second oval holes on described end plate;
Described the first oval hole be centered close to described end plate near on the axis at the edge of a side of described circular hole and the straight flange in described the first oval hole perpendicular to described axis, described the first oval hole is 23.5 millimeter to described end plate near the distance at the edge of a side of described circular hole near the straight flange of described circular hole, the scope of the diameter of the circular arc on the both sides in described the first oval hole is 5 to 6 millimeters, the length that the length of the straight flange in described the first oval hole adds the above diameter is less than or equal to one first length and deducts 1 millimeter and be more than or equal to described the first length and deduct 4 millimeters, the centre-to-centre spacing sum of described the first length two circular holes that to be the centre-to-centre spacing of two circular holes for one group of IGBT module is set adjacent with four circular holes for two groups of adjacent IGBT modules are set,
Two described the second oval holes lay respectively at the both sides of described axis, the straight flange in described the second oval hole is perpendicular to described axis, described the second oval hole is 17 millimeter to described end plate near the distance at the edge of a side of described circular hole near the straight flange of described circular hole, the vertical range perpendicular between the axis of described straight flange and the axis of described AC copper-line in described the second oval hole equals 1/2 of the length of diameter of the circular arc on the both sides in described the first oval hole and the length sum of the straight flange in described the first oval hole and adds a predetermined constant, the scope of described predetermined constant is 13.75 to 15.25 millimeters, the scope of the diameter of the circular arc on the both sides in described the second oval hole is 5 to 6 millimeters, the scope that the length of the straight flange in described the second oval hole adds the length of the diameter of the circular arc on the both sides in the above the second oval hole is 16.5 to 19.5 millimeters.
2. AC copper-line as claimed in claim 1, is characterized in that, the length that the length of the straight flange in described the first oval hole adds the above diameter is less than or equal to described the first length and deducts 1 millimeter and be more than or equal to described the first length and deduct 3 millimeters.
3. AC copper-line as claimed in claim 2, is characterized in that, the length that the length of the straight flange in described the first oval hole adds the above diameter is less than or equal to described the first length and deducts 1 millimeter and be more than or equal to described the first length and deduct 2 millimeters.
4. AC copper-line as claimed in claim 3, is characterized in that, the length that the length of the straight flange in described the first oval hole adds the above diameter equals described the first length and deducts 1 millimeter.
5. AC copper-line as claimed in claim 1, is characterized in that, the scope that the length of the straight flange in described the second oval hole adds the length of the diameter of the circular arc on the both sides in the above the second oval hole is 18.5 to 19.5 millimeters.
6. AC copper-line as claimed in claim 5, is characterized in that, the length that the length of the straight flange in described the second oval hole adds the diameter of the circular arc on the both sides in the above the second oval hole equals 19.5 millimeters.
7. the AC copper-line as described in any one in claim 1-6, is characterized in that, the diameter of the circular arc on the both sides in the diameter of the circular arc on the both sides in described the first oval hole and described the second oval hole is 6 millimeters.
8. an AC copper-line, a side of an one end plate is for the ac terminal of four groups of IGBT modules in parallel, and the ac terminal of every group of IGBT module is arranged on described end plate by two circular holes respectively, it is characterized in that, is formed with one the 3rd oval hole on described end plate;
Described the 3rd oval hole be centered close to described end plate near on the axis at the edge of a side of described circular hole and the straight flange in described the 3rd oval hole perpendicular to described axis, described the 3rd oval hole is 23.5 millimeter to described end plate near the distance at the edge of a side of described circular hole near the straight flange of described circular hole, the scope of the diameter of the circular arc on the both sides in described the 3rd oval hole is 5 to 6 millimeters, the length that the length of the straight flange in described the 3rd oval hole adds the arc diameter on the above the 3rd both sides, oval hole equals 2 times of centre-to-centre spacing sum of two circular holes that the centre-to-centre spacing of two circular holes for one group of IGBT module is set is adjacent with four circular holes for two groups of adjacent IGBT modules are set.
9. AC copper-line as claimed in claim 8, is characterized in that, the diameter of the circular arc on the both sides in described the 3rd oval hole is 6 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420063596.5U CN203734086U (en) | 2014-02-12 | 2014-02-12 | AC copper bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420063596.5U CN203734086U (en) | 2014-02-12 | 2014-02-12 | AC copper bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734086U true CN203734086U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420063596.5U Withdrawn - After Issue CN203734086U (en) | 2014-02-12 | 2014-02-12 | AC copper bar |
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| Country | Link |
|---|---|
| CN (1) | CN203734086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332787A (en) * | 2014-02-12 | 2015-02-04 | 上海新时达电气股份有限公司 | AC copper busbar |
-
2014
- 2014-02-12 CN CN201420063596.5U patent/CN203734086U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332787A (en) * | 2014-02-12 | 2015-02-04 | 上海新时达电气股份有限公司 | AC copper busbar |
| CN104332787B (en) * | 2014-02-12 | 2017-01-04 | 上海新时达电气股份有限公司 | AC copper-line |
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Granted publication date: 20140723 Effective date of abandoning: 20170104 |
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| AV01 | Patent right actively abandoned |