CN103441655B - A kind of cylindrical frequency converter - Google Patents
A kind of cylindrical frequency converter Download PDFInfo
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- CN103441655B CN103441655B CN201310419496.1A CN201310419496A CN103441655B CN 103441655 B CN103441655 B CN 103441655B CN 201310419496 A CN201310419496 A CN 201310419496A CN 103441655 B CN103441655 B CN 103441655B
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Abstract
The invention provides a kind of cylindrical frequency converter, comprise: the urceolus that can enter hoistway, inside be placed on urceolus and the inner core that can run through for the hoistway body of rod, the frequency converter main body in the cavity volume between inner core and urceolus, seals with urceolus the end cap be connected with inner core respectively; Wherein, end cap has the through hole passed for the hoistway body of rod; Frequency converter main body comprises: at least two drive plates be sequentially connected in series, the power device be connected with drive plate, capacitance component, the control board be connected with drive plate; Wherein, drive plate and control board are provided with I/O interface.Cylindrical frequency converter provided by the invention, can enter hoistway with the hoistway body of rod, reduce use cost, also improve dependability; Meanwhile, frequency converter main body is arranged between urceolus and inner core, drive plate is split, make full use of the inner space of this cylindrical frequency converter, make the internal structure of this cylindrical frequency converter compacter, small volume, thus be convenient to this cylindrical frequency converter and be applied to drilling equipment.
Description
Technical field
The present invention relates to drilling equipment Frequency Drive Control technical field, more particularly, relate to a kind of cylindrical frequency converter.
Background technology
Frequency converter is the visual plant in frequency control field, is widely used in traditional industry (as weaving, pottery, machine tooling etc.).At present, common common frequency converter mainly comprises: casing, and is positioned at the frequency converter main body of casing; Wherein frequency converter main body mainly comprises power device IGBT (InsulatedGateBipolarTransistor), the drive plate be connected with power device, the control board be connected with drive plate, capacitance component; Wherein, drive plate and control board are provided with I/O (input/output) interface.The frequency converter of different capacity grade, varies in size, and usual transducer power is larger, and its volume is also larger.The casing of usual frequency converter is rectangular-shaped.
In down-hole exploration and oil exploitation application, the Frequency Drive Control of pit gear is had a wide range of applications, exists the demand of application of frequency converter in pit gear.In down-hole exploration and oil exploitation application, the cross section of hoistway is circular, and the hoistway body of rod (such as drilling rod, sucker rod, the bar etc. that draws water are driven by motor the body of rod being rotated or repeatedly moving back and forth) of pit gear needs to stretch in hoistway and carries out work.Such as in oil exploitation industry, there is specific criteria in the diameter for hoistway and the hoistway body of rod, usual hoistway diameter is 116mm, hoistway body of rod diameter is 64mm, existing frequency converter casing is rectangular-shaped, frequency converter can only be placed on the top (on the ground outside hoistway) of hoistway mouth, is then received on the oil pumper in hoistway by control cable and drive cable.But, for darker hoistway, need longer control cable and drive cable to receive on the motor of oil pumper, affect the timely response of motor, cause the consumption of power output comparatively large, make the use cost of frequency converter higher; In addition, longer cable is more damaged, causes the dependability of frequency converter lower.
In sum, how to reduce the impact responded in time motor, to reduce the consumption of power output, and then reducing the use cost of frequency converter, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
The object of this invention is to provide a kind of cylindrical frequency converter, to reduce the impact responded in time motor, reduce the consumption of power output, and then reduce the use cost of frequency converter.
To achieve these goals, the invention provides following technical scheme:
A kind of cylindrical frequency converter, comprise: the urceolus that can enter hoistway, inside be placed on described urceolus and the inner core that can run through for the hoistway body of rod, the frequency converter main body in the cavity volume between described inner core and described urceolus, seals with described urceolus the end cap be connected with described inner core respectively; Wherein,
Described end cap has the through hole passed for the described hoistway body of rod; Described frequency converter main body comprises: at least two drive plates be sequentially connected in series, the power device be connected with described drive plate, capacitance component, the control board be connected with described drive plate; Wherein, described drive plate and described control board are provided with I/O interface.
Preferably, in above-mentioned cylindrical frequency converter, described drive plate extends along the axis of described urceolus, or extends along the hoop of described urceolus; Described control board extends along the axis of described urceolus.
Preferably, in above-mentioned cylindrical frequency converter, described drive plate is arranged along the hoop distribution of described urceolus successively.
Preferably, in above-mentioned cylindrical frequency converter, described drive plate and described control board are all fixedly linked with the inwall of described urceolus.
Preferably, in above-mentioned cylindrical frequency converter, described drive plate is sequentially connected in series by cable or copper bar; Described drive plate is connected with described control board by soft arranging wire.
Preferably, in above-mentioned cylindrical frequency converter, the number of described power device is multiple, and described power device is corresponding with described drive plate to be arranged.
Preferably, in above-mentioned cylindrical frequency converter, described urceolus is cylinder; The inwall of described urceolus has plane area, and described power device is positioned on described plane area.
Preferably, in above-mentioned cylindrical frequency converter, described urceolus comprises point cylinder that at least two sealings are connected, and described in connected two, the interface of point cylinder is parallel to the axis of described urceolus.
Preferably, in above-mentioned cylindrical frequency converter, the number of described point of cylinder is two, is respectively first point of cylinder and second point of cylinder, and described power device and described drive plate are positioned on described first point of cylinder, and described control board is positioned on described second point of cylinder.
Preferably, in above-mentioned cylindrical frequency converter, described capacitance component is arranged at the one end away from described I/O interface in described cavity volume, and described capacitance component is connected with described drive plate by copper bar.
Preferably, in above-mentioned cylindrical frequency converter, the input power terminal of described I/O interface and outputting power terminal are copper bar, and described input power terminal and outputting power terminal are all welded on described drive plate; The control terminal of described I/O interface is optic fibre connector, and described control terminal is welded on described control board.
Cylindrical frequency converter provided by the invention, there is the urceolus that can enter hoistway and the inner core that can run through for the hoistway body of rod, end cap has the through hole passed for the hoistway body of rod, like this, the hoistway body of rod can be made to run through whole cylindrical frequency converter, this cylindrical frequency converter is made to be distributed in the surrounding of the hoistway body of rod, effectively can utilize the space in hoistway, thus the borehole wall can be avoided to produce interference to this cylindrical frequency converter, make this cylindrical frequency converter can enter hoistway with the hoistway body of rod, then shorten the distance of cylindrical frequency converter and motor, thus shorten the length controlling cable and drive cable, reduce the impact that motor is responded in time, reduce the consumption of power output, and then reduce the use cost of cylindrical frequency converter, meanwhile, also reduce and control cable and the impaired probability of drive cable, and then improve the dependability of this cylindrical frequency converter.
Simultaneously, cylindrical frequency converter provided by the invention, frequency converter main body is arranged between urceolus and inner core, there are at least two drive plates be sequentially connected in series simultaneously, split by drive plate, make full use of the inner space of this cylindrical frequency converter, make the internal structure of this cylindrical frequency converter compacter, small volume, thus be convenient to this cylindrical frequency converter and be applied to drilling equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The exploded perspective view of the cylindrical frequency converter that Fig. 1 provides for the embodiment of the present invention;
The structural representation of frequency converter main body in the cylindrical frequency converter that Fig. 2 provides for the embodiment of the present invention;
The transverse sectional view of the cylindrical frequency converter that Fig. 3 provides for the embodiment of the present invention.
In upper Fig. 1-3:
1 is drive plate, 3 is inner core, 4 is electric capacity, 5 is I/O interface, 6 is end cap, 61 is through hole, 7 is capacitor board, 8 is control board, 9 is IGBT for urceolus, 11 to be first point of cylinder, 12 be second point of cylinder, 2.
Embodiment
Embodiments provide a kind of cylindrical frequency converter, hoistway can be entered with the hoistway body of rod, reduce the impact that motor is responded in time, reduce the consumption of power output, and then reduce the use cost of this cylindrical frequency converter.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The cylindrical frequency converter that the embodiment of the present invention provides, comprise: the urceolus 1 that can enter hoistway, inside be placed on urceolus 1 and the inner core 3 that can run through for the hoistway body of rod, the frequency converter main body in the cavity volume between inner core 3 and urceolus 1, and seal with urceolus 1 end cap 6 be connected with inner core 3 respectively; Wherein, end cap 6 has the through hole 61 passed for the hoistway body of rod; Frequency converter main body comprises: at least two drive plates be sequentially connected in series 2, the power device 9 be connected with drive plate 2, capacitance component, the control board 8 be connected with drive plate 2; Wherein, drive plate 2 and control board 8 are provided with I/O interface 5.
It should be noted that, the hoistway body of rod is the hoistway body of rod of drilling equipment, and hoistway is the underground hoistway such as oil exploitation hoistway, down-hole exploration hoistway.The number of end cap 6 is two, lays respectively at the two ends of urceolus 1, and one of them end cap 6 is provided with cable-through hole, is connected with the binding post of frequency converter main body to enable cable.Capacitance component needs to be electrically connected with power device 9.When end cap 6 is enclosed within the outside of inner core 3, through hole 61 can pass for inner core 3, and then passes for the hoistway body of rod.
The cylindrical frequency converter that the embodiment of the present invention provides, there is the urceolus 1 that can enter hoistway and the inner core 3 that can run through for the hoistway body of rod, end cap 6 has the through hole 61 passed for the hoistway body of rod, like this, the hoistway body of rod can be made to run through whole cylindrical frequency converter, this cylindrical frequency converter is made to be distributed in the surrounding of the hoistway body of rod, effectively can utilize the space in hoistway, thus the borehole wall can be avoided to produce interference to this cylindrical frequency converter, make this cylindrical frequency converter can enter hoistway with the hoistway body of rod, then shorten the distance of cylindrical frequency converter and motor, thus shorten the length controlling cable and drive cable, reduce the impact that motor is responded in time, reduce the consumption of power output, and then reduce the use cost of cylindrical frequency converter, meanwhile, also reduce and control cable and the impaired probability of drive cable, and then improve the dependability of this cylindrical frequency converter.
Simultaneously, the cylindrical frequency converter that the embodiment of the present invention provides, frequency converter main body is arranged between urceolus 1 and inner core 3, there are at least two drive plates be sequentially connected in series 2 simultaneously, split by drive plate 2, make full use of the inner space of this cylindrical frequency converter, make the internal structure of this cylindrical frequency converter compacter, small volume, thus be convenient to this cylindrical frequency converter and be applied to drilling equipment.
The installation method of the cylindrical frequency converter that the embodiment of the present invention provides is: the outside this cylindrical frequency converter being set in the hoistway body of rod, and cylindrical frequency converter is fixedly connected with the hoistway body of rod.Prioritizing selection cylindrical frequency converter is positioned at the top of motor driving apparatus and is electrically connected with the motor of motor driving apparatus, and motor driving apparatus is fixed on the hoistway body of rod.Realize cylindrical frequency converter to be fixedly connected with the hoistway body of rod, various ways can be had, such as realized and being indirectly fixedly connected with of the hoistway body of rod by abutting with motor driving apparatus by cylindrical frequency converter, or be directly fixed on the hoistway body of rod by cylindrical frequency converter, cylindrical frequency converter is fixedly connected with by bolt, buckle or binding rope with the hoistway body of rod.The embodiment of the present invention is not done this and is limited particularly.It should be noted that, motor driving apparatus is drill bit apparatus, oil pumper or immersible pump etc.When motor driving apparatus is immersible pump, the hoistway body of rod mainly plays a supportive role, and all with the hoistway body of rod up and down reciprocatingly, when the hoistway body of rod walks downward time, cylindrical frequency converter drives immersible pump oil suction for cylindrical frequency converter and immersible pump; Motor speed is then controlled without oil suction to play the effect of saving energy when both are mentioned by the hoistway body of rod.
Preferably, in the cylindrical frequency converter that above-described embodiment provides, drive plate 2 extends along the axis of urceolus 1, or extends along the hoop of urceolus 1; Control board 8 extends along the axis of urceolus 1.For the ease of the installation of power device 9, prioritizing selection drive plate 2 extends along the axis of urceolus 1.Like this, the inner space of this cylindrical frequency converter can be made full use of, make the internal structure of this cylindrical frequency converter compacter, be conducive to the volume reducing this cylindrical frequency converter.
Further, in the cylindrical frequency converter that above-described embodiment provides, drive plate 2 is arranged along the hoop distribution of urceolus 1 successively.Like this, the ring-shaped chamber between inner core 2 and urceolus 1 can be made full use of, strengthen the compactedness of internal structure, the volume of this cylindrical frequency converter can be reduced further.Certainly, drive plate 2 also can be arranged along the axial distribution of urceolus 1 successively, and the embodiment of the present invention is not done this and limited particularly.
In order to strengthen reliability, in the cylindrical frequency converter that above-described embodiment provides, drive plate 2 and control board 8 are all fixedly linked with the inwall of urceolus 1.Like this, the steadiness of drive plate 2 and control board 8 can be ensured, be conducive to the heat radiation strengthening drive plate 2 and control board 8 simultaneously, and then improve the heat dispersion of this cylindrical frequency converter.Preferably, drive plate 2 is fixedly linked by the inwall of screw or buckle and urceolus 1; Control board 8 is fixedly linked by the inwall of screw or buckle and urceolus 1.Certainly, it is fixing that drive plate 2, control board 8 also realize with urceolus 1 by other modes, and the embodiment of the present invention is not done this and limited particularly.
In the cylindrical frequency converter that above-described embodiment provides, drive plate 2 is at least two, and prioritizing selection drive plate 2 is sequentially connected in series by cable or copper bar.The concrete number of drive plate 2, needs to set according to the power grade of this cylindrical frequency converter, when power grade is larger, increases the number of drive plate 2, when power grade is less, reduces the number of drive plate 2.
Preferably, in the cylindrical frequency converter that above-described embodiment provides, drive plate 2 is connected with control board 8 by soft arranging wire.
In order to enable this cylindrical frequency converter enter hoistway, then need the cross-sectional area reducing this cylindrical frequency converter as much as possible.In the cylindrical frequency converter that above-described embodiment provides, power device 9 is totally divided into two classes, and a class is single tube IGBT, and another kind of is IGBT module, the former small volume, and the latter's volume is comparatively large and thickness is also larger.For the ease of power device 9 installation and reduce the cross-sectional area of this cylindrical frequency converter, prioritizing selection power device 9 is single tube IGBT.Single tube IGBT small volume, effectively can utilize the ring-shaped inner part space of this cylindrical frequency converter, compact conformation, because cylindrical frequency converter axial length provided by the invention is longer, be particularly suitable for placing several single tubes IGBT vertically, can circumferentially distributing simultaneously, meet the design requirement of various power section frequency converter, very the annular confined space of Appropriate application cylindrical frequency converter inside.The concrete number of single tube IGBT, needs to set according to the power grade of this cylindrical frequency converter, when power grade is larger, increases the number of single tube IGBT, when power grade is less, reduces the number of single tube IGBT.
In order to the inner space of this cylindrical frequency converter of Appropriate application, in the cylindrical frequency converter that above-described embodiment provides, the number of power device 9 is multiple, and this power device 9 is corresponding with drive plate 2 to be arranged.Like this, effectively can utilize the ring-shaped inner part space of this cylindrical frequency converter, be conducive to the volume reducing this cylindrical frequency converter, thus be convenient to this cylindrical frequency converter and be applied to drilling equipment.It should be noted that, the concrete number of power device 9, need to set according to the power grade of this cylindrical frequency converter, when power grade is larger, increase the number of power device 9, when power grade is less, reduce the number of power device 9.
In the cylindrical frequency converter that above-described embodiment provides, urceolus 1 can be square tube, also can be cylinder.Enter hoistway for the ease of this cylindrical frequency converter, prioritizing selection urceolus 1 is cylinder.When selecting single tube IGBT, the weld due to single tube IGBT is plane, and in order to realize the welding of single tube IGBT, the inwall of prioritizing selection urceolus 1 has plane area, and power device 9 is arranged on plane area.Meanwhile, control board 8 and drive plate 2 are also positioned at plane area.In above-mentioned cylindrical frequency converter, inner core 3 can be square tube, also can be cylinder, and inner core 3 and urceolus 1 can be cylinder, but also one of them is cylinder, and another is square tube, also can two be square tube.
For the ease of the installation of frequency converter main body, in the cylindrical frequency converter that above-described embodiment provides, urceolus 1 comprises point cylinder that at least two sealings are connected, and the interface of two points of connected cylinders is parallel to the axis of urceolus 1.Like this, can first frequency converter main body be arranged on each point of cylinder, then form urceolus 1 at docking point cylinder, thus be convenient to the installation of frequency converter main body.
Preferably, in the cylindrical frequency converter that above-described embodiment provides, the number of point cylinder is two, and be respectively first point of cylinder 11 and second point of cylinder 12, power device 9 and drive plate 2 are positioned on first point of cylinder 11, and control board 8 is positioned on second point of cylinder 12.Like this, be convenient to the installation of this cylindrical frequency converter, be also convenient to the installation effectiveness improving this cylindrical frequency converter.Preferably, first point of cylinder 11 and second point of cylinder 12 symmetrical about the center line of urceolus 1.When urceolus 1 cylindrically time, first point of cylinder 11 and second point of cylinder 12 are all in semi-circular cylindrical.Certainly, point cylinder that also two or more can be divided into differ in size urceolus 1 according to the distribution of frequency converter main body, or urceolus 1 is divided into multiple equal-sized point of cylinder, the embodiment of the present invention is not done this and is limited particularly.
For the ease of the use of this cylindrical frequency converter, in the cylindrical frequency converter that above-described embodiment provides, capacitance component is arranged at the one end away from I/O interface 5 in cavity volume, and capacitance component is connected with drive plate 2 by copper bar.Like this, capacitance component is connected with power device 9 Indirect Electro by drive plate 2, is convenient to the installation of capacitance component.
For the ease of application of frequency converter in drilling equipment, in the cylindrical frequency converter that above-described embodiment provides, the input power terminal of I/O interface 5 and outputting power terminal are copper bar, and input power terminal and outputting power terminal are all welded on drive plate 2; The control terminal of I/O interface 5 is optic fibre connector, and control terminal is welded on control board 8.Wherein, I/O interface 5 also has the binding post for being connected with drive motors, and light terminal is for exporting control signal to external motor.
In the cylindrical frequency converter that above-described embodiment provides, select I/O interface 5 to be positioned at one end of drive plate 2, capacitance component is positioned at the other end of drive plate 2, has same one end that the end cap 6 of through wires hole and I/O interface 5 are positioned at urceolus 1.Capacitance component comprises capacitor board 7 and arranges and the electric capacity 4 on capacitor board 7, and electric capacity 4 is welded on capacitor board 7, the inwall clamping of capacitor board 7 and urceolus 1; Capacitor board 7 is connected with drive plate 2 by copper bar; Control board 8 is light current, selects control board 8 to be connected with drive plate 2 by soft arranging wire.
In view of the hot environment that the underground heat of down-hole causes, require that cylindrical frequency converter has good heat dispersion.Preferably, in the cylindrical frequency converter that above-described embodiment provides, the outer wall of urceolus 1 is provided with radiator structure.This radiator structure can be distributed on the outer wall of whole urceolus 1, also can be distributed on the outer wall of urceolus 1, the heat dispersion needed for reality and determining.When selecting the latter, the position outer wall of prioritizing selection urceolus 1 corresponding to power device 9 is provided with radiator structure.Because power device 9 is main heater members.Radiator structure can be radiating groove and also can be heat radiation texture, and the exterior surface area namely by increasing urceolus 1 improves the heat dispersion of urceolus 1, and then improves the heat dispersion of whole cylindrical frequency converter.In order to improve heat dispersion to greatest extent, prioritizing selection radiator structure is radiating groove.Concrete, radiating groove can be bar-shaped trough, and extends along the axis of urceolus 1; Radiating groove also can be cannelure, and the circumference along urceolus 1 extends.
In order to optimize technique scheme further, in the cylindrical frequency converter that above-described embodiment provides, urceolus 1 and inner core 3 are metal shell, and end cap 6 is metal end, improve the heat dispersion of urceolus 1, inner core 3 and end cap 6, and then improve the heat dispersion of whole cylindrical frequency converter further.Preferably, urceolus 1, inner core 3 and end cap 6 metal of selecting thermal conductivity higher.Concrete, urceolus 1 and inner core 3 are cast copper housing, and end cap 6 is cast copper end cap.In order to reduce costs, prioritizing selection urceolus 1 and inner core 3 are die cast cylindrical shell, and end cap 6 is die cast end cap.
Enter hoistway for the ease of this cylindrical frequency converter, in the cylindrical frequency converter that above-described embodiment provides, prioritizing selection urceolus 1 and inner core 3 are isometrical cylinder.Enter hoistway for the ease of this cylindrical frequency converter with the hoistway body of rod, the internal diameter of prioritizing selection inner core 3 is 62-72mm, and the external diameter of urceolus 1 is 107-117mm.Certainly, for different hoistways and the hoistway body of rod, urceolus 1 and inner core 3 also can be other sizes, in actual application, set according to the concrete size of hoistway and the hoistway body of rod.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. a cylindrical frequency converter, it is characterized in that, comprise: the urceolus (1) that can enter hoistway, inside be placed on described urceolus (1) and the inner core (3) that can run through for the hoistway body of rod, be positioned at the frequency converter main body of the cavity volume between described inner core (3) and described urceolus (1), seal with described inner core (3) and described urceolus (1) end cap (6) be connected respectively; Wherein,
Described end cap (6) has the through hole (61) passed for the described hoistway body of rod; Described frequency converter main body comprises: at least two drive plates be sequentially connected in series (2), the power device (9) be connected with described drive plate (2), capacitance component, the control board (8) be connected with described drive plate (2); Wherein, described drive plate (2) and described control board (8) are provided with I/O interface (5).
2. cylindrical frequency converter according to claim 1, is characterized in that, described drive plate (2) extends along the axis of described urceolus (1), or extends along the hoop of described urceolus (1); Described control board (8) extends along the axis of described urceolus (1).
3. cylindrical frequency converter according to claim 2, is characterized in that, described drive plate (2) is arranged along the hoop distribution of described urceolus (1) successively.
4. cylindrical frequency converter according to claim 1, is characterized in that, described drive plate (2) and described control board (8) are all fixedly linked with the inwall of described urceolus (1).
5. cylindrical frequency converter according to claim 1, is characterized in that, described drive plate (2) is sequentially connected in series by cable or copper bar; Described drive plate (2) is connected with described control board (8) by soft arranging wire.
6. cylindrical frequency converter according to claim 1, is characterized in that, the number of described power device (9) is multiple, and described power device (9) is corresponding with described drive plate (2) to be arranged.
7. cylindrical frequency converter according to claim 1, is characterized in that, described urceolus (1) is cylinder; The inwall of described urceolus (1) has plane area, and described power device (9) is arranged on described plane area.
8. cylindrical frequency converter according to claim 1, is characterized in that, described urceolus (1) comprises point cylinder that at least two sealings are connected, and described in connected two, the interface of point cylinder is parallel to the axis of described urceolus (1).
9. cylindrical frequency converter according to claim 8, it is characterized in that, the number of described point of cylinder is two, be respectively first point of cylinder (11) and second point of cylinder (12), described power device (9) and described drive plate (2) are positioned on described first point of cylinder (11), and described control board (8) is positioned on described second point of cylinder (12).
10. cylindrical frequency converter according to claim 1, is characterized in that, described capacitance component is arranged at the one end away from described I/O interface (5) in described cavity volume, and described capacitance component is connected with described drive plate (2) by copper bar.
11. cylindrical frequency converter according to claim 1, it is characterized in that, input power terminal and the outputting power terminal of described I/O interface (5) are copper bar, and described input power terminal and described outputting power terminal are all welded on described drive plate (2); The control terminal of described I/O interface (5) is optic fibre connector, and described control terminal is welded on described control board (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419496.1A CN103441655B (en) | 2013-09-13 | 2013-09-13 | A kind of cylindrical frequency converter |
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| CN201310419496.1A CN103441655B (en) | 2013-09-13 | 2013-09-13 | A kind of cylindrical frequency converter |
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| CN103441655B true CN103441655B (en) | 2016-02-03 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0571067A1 (en) * | 1992-04-21 | 1993-11-24 | Wisconsin Alumni Research Foundation | Forward converter with two active switches and unity power factor capability |
| CN202156532U (en) * | 2011-05-28 | 2012-03-07 | 中国船舶重工集团公司第七一二研究所 | High-power density underwater electric propulsion control device |
-
2013
- 2013-09-13 CN CN201310419496.1A patent/CN103441655B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0571067A1 (en) * | 1992-04-21 | 1993-11-24 | Wisconsin Alumni Research Foundation | Forward converter with two active switches and unity power factor capability |
| CN202156532U (en) * | 2011-05-28 | 2012-03-07 | 中国船舶重工集团公司第七一二研究所 | High-power density underwater electric propulsion control device |
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