CN103872924A - Variable frequency controller and anti-explosion variable frequency motor with same - Google Patents
Variable frequency controller and anti-explosion variable frequency motor with same Download PDFInfo
- Publication number
- CN103872924A CN103872924A CN201410060332.9A CN201410060332A CN103872924A CN 103872924 A CN103872924 A CN 103872924A CN 201410060332 A CN201410060332 A CN 201410060332A CN 103872924 A CN103872924 A CN 103872924A
- Authority
- CN
- China
- Prior art keywords
- frequency
- explosion
- variable frequency
- converting control
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The invention discloses a variable frequency controller and an anti-explosion variable frequency motor with the same. The variable frequency controller comprises a direct current laminating layer bus bar, multiple single phase variable frequency modules connected with the direct current laminating layer bus bar, an inner water cooling unit for cooling the single phase variable frequency modules, and multiple direct current filter capacitor groups. According to the variable frequency controller for the anti-explosion variable frequency motor, the single phase variable frequency modules and the direct current filter capacitor groups are arranged in a laminating mode, so the structural compactness of the variable frequency control device in the length, width and height space is improved, the size of the variable frequency controller is reduced, the structure of the variable frequency controller is enabled to be more compact and reasonable, the electrical distance between a high-voltage element and a shell is favorably increased, an electrical insulation protection device is favorably additionally arranged around the high-voltage element, and the high-voltage insulation performance of the variable frequency controller is improved.
Description
Technical field
The present invention relates to flame-proof converter technical field, particularly, particularly a kind of frequency-converting control device and there is its explosion-proof variable frequency motor.
Background technology
Frequency converter is to utilize the effect that turns on and off of semiconductor power device industrial-frequency alternating current to be transformed to the converting means of the adjustable alternating current of frequency.This device is first transformed to direct current industrial-frequency alternating current, then direct current is transformed to the adjustable alternating current of frequency drives load.Consider that the working environment at coal mines such as colliery have the advantages that to contain inflammable and explosive composition in narrow space, humidity, air, universal frequency converter is forbidden in down-hole application.Explosion-proof frequency converter carries out the product of frequency modulation just for this particular surroundings motor device.
All separate with motor for the frequency converter under coal mine, an explosion-proof frequency converter connects one or two motors by up to a hundred meters of cables.There is following shortcoming in this kind of connected mode: overall space takies greatly, wiring is inconvenient, frequency converter and motor cable jumper are longer to motor cable to the operation of electromagnetic interference peripheral equipment, the frequency converter in space, can cause humorous wave reflection and stack, improve crest voltage, easily damage electrical machine insulation, frequency converter and motor at down-hole weak heat-dissipating etc.
In addition,, because be subject to the restriction of volume, the electric pressure of explosion-proof frequency converter can only be accomplished in 1140V, cannot meet the demand of coal enterprise to high-voltage high-power frequency transformator.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of technical problem in correlation technique.For this reason, one object of the present invention is to propose the frequency-converting control device for explosion-proof variable frequency motor of a kind of compact conformation, good heat dissipation effect.Another object of the present invention is to propose a kind of explosion-proof variable frequency motor with above-mentioned frequency-converting control device.
A kind of frequency-converting control device for explosion-proof variable frequency motor is provided according to an aspect of the present invention, has comprised: direct current stack bus bar; Multiple single-phase frequency-variable modules, described multiple single-phase frequency-variable modules are all connected with described direct current stack bus bar; For described single-phase frequency-variable module is carried out to cooling interior water cooling unit, thus, can improve the radiating efficiency of single-phase frequency-variable module.DC filter capacitor group can be four groups of electric capacity of stacked placement, thus, can further reduce the volume of frequency-converting control device, makes the structure of frequency-converting control device compacter, reasonable.Multiple DC filter capacitor groups, described DC filter capacitor group is connected with described direct current stack bus bar.
According to the frequency-converting control device for explosion-proof variable frequency motor of the embodiment of the present invention; by by single-phase frequency-variable module and the stacked placement of DC filter capacitor group; improve the compact conformation degree of frequency-converting control device in length, width and height space; not only can reduce the volume of frequency-converting control device; make the structure of frequency-converting control device compacter, reasonable; but also be conducive to increase the electric equipment compartment distance between high voltage device and housing; also be conducive to around high voltage device, set up electric insulation protective device, improved the High-Voltage Insulation performance of frequency-converting control device.In addition, interior water cooling unit is set in frequency-converting control device, has improved the radiating efficiency of frequency-converting control device.
In addition, the frequency-converting control device for explosion-proof variable frequency motor according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, described interior water cooling unit comprises: water pump; At least one cooling water channel, described at least one cooling water channel is located in described single-phase frequency-variable module, and each described cooling water channel has water inlet and delivery port; Water inlet separator, described water inlet separator is communicated with the water inlet of described water pump and described at least one cooling water channel respectively; Go out separator, described in go out separator and be communicated with the delivery port of described water pump and described at least one cooling water channel respectively.Thus, can dispel the heat to frequency-converting control device.
Further, described interior water cooling unit also comprises water water-to-water heat exchanger, described in described water water-to-water heat exchanger is connected to, goes out between separator and described water pump.Thus, improve the heat exchange efficiency of interior water cooling unit, simplified the structure of frequency-converting control device.
According to one embodiment of present invention, the stacked placement of described multiple single-phase frequency-variable modules and be connected to described direct current stack bus bar one side, the stacked placement of described multiple DC filter capacitor groups and be connected to the opposite side of described direct current stack bus bar.Thus, can make full use of the height space of frequency-converting control device, be conducive to high-low pressure element subregion and arrange, avoid high voltage device to produce electromagnetic interference to low voltage component.
According to one embodiment of present invention, between two adjacent described single-phase frequency-variable modules, be provided with multiple support portions.Thus, can make multiple single-phase frequency-variable modules link together securely, thereby improve the structural stability of frequency-converting control device.
According to one embodiment of present invention, described single-phase frequency-variable module comprises three.
Particularly, each described single-phase frequency-variable module comprises: many stack bus bars, described many stack bus bars comprise the both positive and negative polarity layer, interconnection layer, zero layer and the interchange articulamentum that stack gradually from top to bottom, wherein said both positive and negative polarity layer, interconnection layer, zero layer and exchange between the every adjacent two layers between articulamentum and be respectively equipped with interlayer insulating film, the upper surface of described both positive and negative polarity layer is equipped with the first insulating coating, and the lower surface of described interchange articulamentum is equipped with the second insulating coating; Metallic support portion, described metallic support portion is disposed on the below of described many stack bus bars, in wherein said metallic support portion, has described cooling water channel; And insulation annex, described insulation annex is located at a side of described metallic support portion and is connected with described many stack bus bars and described metallic support portion.
It should be noted that, between many stack bus bars and metallic support portion, set up insulation annex, increase the creepage distance between many stack bus bars and metallic support portion by the insulate length of annex of control, and then make spacing between many stack bus bars and metallic support portion be reduced to the thickness of insulation annex, thereby make single-phase frequency-variable module needn't be subject to electric effect of distance, thus, improve the compact conformation degree of single-phase frequency-variable module, reduced the volume of frequency-converting control device.In addition, the number of plies of many stack bus bars is increased to four layers, can makes single-phase frequency-variable module be applicable to high-power frequency conversion control device.
According to examples more of the present invention, in described metallic support portion, have at least one described in cooling water channel.Preferably, the water inlet of every described cooling water channel and delivery port are all positioned at the same side of described metallic support portion.Thus, be convenient to arranging of cooling water channel, reduced the design difficulty of interior water cooling unit.More specifically, every described cooling water channel is all formed as U-shaped water channel.
Be connected with insulation annex and other electric elements for convenience of many stack bus bars, according to one embodiment of present invention, one end of the described insulation annex of vicinity of described interchange articulamentum has multiple the first splicing ears spaced apart, and described the first splicing ear is connected with described insulation annex.
According to a specific embodiment of the present invention, described the first splicing ear comprises: flat part, and described flat part extends and with described to exchange articulamentum in the same plane from described interchange articulamentum; And with described flat part bending part connected vertically, described bending part is connected with described insulation annex.Alternatively, described bending part and described insulation annex are bolted.
Be connected with direct current stack bus bar and other electric elements for convenience of many stack bus bars, according to a specific embodiment of the present invention, one end of the described direct current stack bus bar of vicinity of described zero layer is configured with the second splicing ear, one end of the described direct current stack bus bar of vicinity of described both positive and negative polarity layer is configured with two the 3rd splicing ears spaced apart, and described the second splicing ear is connected with described direct current stack bus bar respectively with described the 3rd splicing ear.
Further, described many stack bus bars also comprise: insulation strip, wherein said both positive and negative polarity layer, interconnection layer and the every one deck exchanging in articulamentum are equipped with described insulation strip, thus, increase the electric equipment compartment distance of many stack bus bars and electric elements link position, increase creepage distance, improved many stack bus bars integral insulation performance; And conductive pole, wherein said both positive and negative polarity layer, interconnection layer, zero layer and exchange in articulamentum on every one deck all riveted joints and have multiple described conductive poles, wherein the described multiple conductive poles on every layer pass through insulating washer electrical isolation with other layers.Cut off the annexation between many stack bus bars and corresponding electric elements by insulating washer, thereby reduced the loop area that many stack bus bars internal current forms, reduced many stack bus bars stray inductance.
According to specific embodiments more of the present invention, the described both positive and negative polarity layer of described many stack bus bars, interconnection layer, zero layer and exchange copper plate that articulamentum is 1.5mm-2.5mm by thickness and fold and form.In order to improve the oxidation resistance of copper plate, zinc-plated processing is all carried out on the described both positive and negative polarity layer of described many stack bus bars, interconnection layer, zero layer and the surface that exchanges articulamentum, thickness of coating is greater than 5 μ m, the upper surface roughness of described metallic support portion requires lower than 1.6um-3.2um, and flatness requires lower than 0.1mm/m.Thus, can make has the good effect that contacts between electric elements and metallic support portion, is conducive to interior water cooling unit the electric elements in metallic support portion are dispelled the heat.
In order to prevent entering into because of dust, moisture the decreasing insulating that causes many stack bus bars in many stack bus bars, according to a specific embodiment of the present invention, described the first insulating coating and described the second insulating coating neighboring are along adopting the processing of pressing edge sealing process, so that form totally-enclosed structure between the first insulating coating and the second insulating coating.Thus, the insulation property of many stack bus bars under the rugged environments such as humidity, dust storm have been improved.
A kind of explosion-proof variable frequency motor is provided according to another aspect of the present invention, has comprised above-mentioned frequency-converting control device.
According to the explosion-proof variable frequency motor of the embodiment of the present invention; by by single-phase frequency-variable module and the stacked placement of DC filter capacitor group; improve the compact conformation degree of frequency-converting control device in length, width and height space; not only can reduce the volume of frequency-converting control device; make the structure of frequency-converting control device compacter, reasonable; but also be conducive to increase the electric equipment compartment distance between high voltage device and housing; also be conducive to around high voltage device, set up electric insulation protective device, improved the High-Voltage Insulation performance of frequency-converting control device.In addition, interior water cooling unit is set in frequency-converting control device, has improved the radiating efficiency of frequency-converting control device.
Also it should be noted that, by electric machine assembly, frequency-converting control device and filtering termination being located in the first to the 3rd chamber being interconnected, make the structure of explosion-proof variable frequency motor compacter, reasonable.Meanwhile, reduce the wiring difficulty between electric machine assembly, frequency-converting control device and filtering termination, reduced the electromagnetic interference of other equipment of cable to outside, improved the stability of explosion-proof variable frequency motor.
Accompanying drawing explanation
Fig. 1 is the front view of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 2 is the vertical view of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 3 is the front view of the single-phase frequency-variable module of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 4 is the upward view of the single-phase frequency-variable module of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 5 is the stereogram of the single-phase frequency-variable module of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 6 is the cutaway view of the metallic support portion of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 7 is the perspective exploded view of many stack bus bars of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 8 is the stereogram of the water water-to-water heat exchanger of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Fig. 9 is the schematic diagram of the interior water cooling unit of the frequency-converting control device for explosion-proof variable frequency motor according to an embodiment of the invention;
Figure 10 is the stereogram of the housing of explosion-proof variable frequency motor according to another embodiment of the invention;
Figure 11 is the stereogram of the partial shell of explosion-proof variable frequency motor according to another embodiment of the invention;
Figure 12 is the stereogram of the partial shell of explosion-proof variable frequency motor according to another embodiment of the invention;
Figure 13 is the stereogram of the partial shell of explosion-proof variable frequency motor according to another embodiment of the invention.
Reference numeral:
The first chamber 110, gap 111, cylindrical stator cover 112,
The second chamber 120, the three chambers 130,
Frequency-converting control device 200,
Direct current stack bus bar 210,
Single-phase frequency-variable module 220,
Many stack bus bars 221, both positive and negative polarity layer 2211, the three splicing ear 22111,2212, zero layer of 2213, the second splicing ear 22131 of interconnection layer, exchange articulamentum 2214, the first splicing ears 22141, flat part 22142, bending part 22143, interlayer insulating film 2215, the first insulating coatings 2216, the second insulating coating 2217, insulation strip 2218, conductive pole 2219, insulating washer 2220
Interior water cooling unit 230,
DC filter capacitor group 240,
Support portion 250.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
As shown in Fig. 1-Fig. 9, according to the frequency-converting control device 200 for explosion-proof variable frequency motor of the embodiment of the present invention, comprising: direct current stack bus bar 210, multiple single-phase frequency-variable module 220, interior water cooling unit 230 and multiple DC filter capacitor group 240.
Particularly, the single-phase frequency-variable module 220 of multiple stacked placements, DC filter capacitor group 240 are all connected with direct current stack bus bar 210.Interior water cooling unit 230 is cooling for single-phase frequency-variable module 220 is carried out, and thus, can improve the radiating efficiency of single-phase frequency-variable module 220.DC filter capacitor group 240 can be four groups of electric capacity of stacked placement, thus, can further reduce the volume of frequency-converting control device 200, makes the structure of frequency-converting control device 200 compacter, reasonable.
Single-phase frequency-variable module 220, the DC filter capacitor group 240 of multiple stacked placements are all connected with direct current stack bus bar 210.Interior water cooling unit 230 is cooling for single-phase frequency-variable module 220 is carried out, and thus, can improve the radiating efficiency of single-phase frequency-variable module 220.DC filter capacitor group 240 can be four groups of electric capacity of stacked placement; thus; improve the compact conformation degree of frequency-converting control device 200 in length, width and height space; not only can reduce the volume of frequency-converting control device 200; make the structure of frequency-converting control device 200 compacter, reasonable; but also be conducive to increase the electric equipment compartment distance between high voltage device and housing 100; also be conducive to around high voltage device, set up electric insulation protective device, improved the High-Voltage Insulation performance of frequency-converting control device 200.
According to the frequency-converting control device 200 for explosion-proof variable frequency motor of the embodiment of the present invention, by by single-phase frequency-variable module 220 and the stacked placement of DC filter capacitor group 240, improve frequency-converting control device 200 in length, compact conformation degree in width and height space, not only can reduce the volume of frequency-converting control device 200, make the structure of frequency-converting control device 200 compacter, rationally, but also be conducive to increase the electric equipment compartment distance between high voltage device and housing 100, also be conducive to set up electric insulation protective device around high voltage device, improve the High-Voltage Insulation performance of frequency-converting control device 200.In addition, interior water cooling unit 230 is set frequency-converting control device 200 is interior, improved the radiating efficiency of frequency-converting control device 200.
As shown in Figure 9, according to one embodiment of present invention, interior water cooling unit 230 comprises: water pump 231, cooling water channel 232, water inlet separator 233 and go out separator 234.Particularly, be provided with at least one cooling water channel 232 in single-phase frequency-variable module 220, each cooling water channel 232 has water inlet 2321 and delivery port 2322.Water inlet separator 233 is communicated with the water inlet 2321 of water pump 231 and at least one cooling water channel 232 respectively.Going out separator 234 is communicated with the delivery port 2322 of water pump 231 and at least one cooling water channel 232 respectively.
Under the effect of water pump 231, deionized water enters cooling water channel 232 by water inlet separator 233, and in cooling water channel 232, carry out heat exchange, finally turn back in water pump 231 by going out separator 234, and then realized cooling to single-phase frequency-variable module 220 of interior water cooling unit 230.Thus, single-phase frequency-variable module 220 radiating efficiencys have been improved.
As shown in Fig. 8-Fig. 9, further, interior water cooling unit 230 also comprises water water-to-water heat exchanger 235, and water water-to-water heat exchanger 235 is connected to out between separator 234 and water pump 231, and its China and foreign countries' water cooling unit 300 is connected to realize heat exchange by water water-to-water heat exchanger 235 with interior water cooling unit 230.Particularly, water water-to-water heat exchanger 235 internal weldings are connected to heat exchanger fin, and interior water cooling unit 230 carries out heat exchange with outer water cooling unit 300 by heat exchanger fin.
The deionized water that in interior water cooling unit 230, temperature is higher becomes the deionized water of low temperature after water water-to-water heat exchanger 235, the deionized water that temperature is lower enters into cooling water channel 232, and single-phase frequency-variable module 220 is lowered the temperature through water pump 231, water inlet separator 233 again.Thus, improve the heat exchange efficiency of interior water cooling unit 230, simplified the structure of frequency-converting control device 200.Be understandable that, interior water cooling unit 230 is not limited to this with the heat exchange mode of outer water cooling unit 300, for example, can also adopt other heat exchange mode place of water water-to-water heat exchangers 235 such as heat pipe, water oil heat exchanger, so that the structure of frequency-converting control device 200 is compacter.
As Figure 1-Figure 2, according to one embodiment of present invention, the stacked placement of multiple single-phase frequency-variable module 220 and be connected to direct current stack bus bar 210 1 sides, the stacked placement of multiple DC filter capacitor groups 240 and be connected to the opposite side of direct current stack bus bar 210.Thus, can make full use of the height space of frequency-converting control device 200, be conducive to high-low pressure element subregion and arrange, avoid high voltage device to produce electromagnetic interference to low voltage component.
The single-phase frequency-variable module 220 of stacked placement and DC filter capacitor group 240 have reduced the design difficulty of direct current stack bus bar 210, reduce the stray inductance of direct current stack bus bar 210, reduce the infringement that due to voltage spikes causes electric elements and master row insulating performance, made the direct current stack bus bar 210 there is stronger Electromagnetic Compatibility.Meanwhile, also help the electric equipment compartment distance increasing between high voltage device and housing 100, be convenient to set up electric insulation protective device around high voltage device, improve the High-Voltage Insulation performance of explosion-proof variable frequency motor.In addition, by stacked single-phase frequency-variable module 220 side that is placed on DC master row layer, be convenient to interior water cooling unit 230 each single-phase frequency-variable module 220 is carried out to independent heat radiation, reduced the design difficulty of interior water cooling unit 230.By stacked DC filter capacitor group 240 opposite side that is placed on direct current stack bus bar 210, can also make the structure of frequency-converting control device 200 compacter, reduce the volume of frequency-converting control device 200.
As shown in Figure 1, according to one embodiment of present invention, between two adjacent single-phase frequency-variable modules 220, be provided with multiple support portions 250.Thus, can make multiple single-phase frequency-variable modules 220 link together securely, thereby improve the structural stability of frequency-converting control device 200.
In specific embodiments more of the present invention, single-phase frequency-variable module 220 comprises three.As shown in Fig. 1-Fig. 7, each single-phase frequency-variable module 220 comprises: many stack bus bars 221, metallic support portion 222 and insulation annex 223.Particularly, as shown in figure 11, many stack bus bars 221 comprise again the both positive and negative polarity layer 2211, interconnection layer 2212, zero layer 2213 and the interchange articulamentum 2214 that stack gradually from top to bottom.Alternatively, the both positive and negative polarity layer 2211 of many stack bus bars 221, interconnection layer 2212, zero layer 2213 and exchange copper plate that articulamentum 2214 can be all 1.5mm-2.5mm by thickness and fold and form.In order to improve the oxidation resistance of copper plate, zinc-plated processing is all carried out on the both positive and negative polarity layer 2211 of many stack bus bars 221, interconnection layer 2212, zero layer 2213 and the surface that exchanges articulamentum 2214, and thickness of coating is greater than 5 μ m.Preferably, both positive and negative polarity layer 2211, interconnection layer 2212, zero layer 2213 and exchange between the every adjacent two layers between articulamentum 2214 and be respectively equipped with interlayer insulating film 2215.
The upper surface of both positive and negative polarity layer 2211 is equipped with the first insulating coating 2216, and the lower surface that exchanges articulamentum 2214 is equipped with the second insulating coating 2217.Thus, the insulation property of many stack bus bars 221 under the rugged environments such as humidity, dust storm have been improved.Wherein enter into because of dust, moisture the decreasing insulating that causes many stack bus bars 221 in many stack bus bars 221 in order to prevent, preferably, the first insulating coating 2216 and the second insulating coating 2217 neighborings are along adopting the processing of pressing edge sealing process, so that form totally-enclosed structure between the first insulating coating 2216 and the second insulating coating 2217.
It should be noted that, between many stack bus bars 221 and metallic support portion 222, set up insulation annex 223, increase the creepage distance between many stack bus bars and metallic support portion by the insulate length of annex of control, and then make spacing between many stack bus bars 221 and metallic support portion 222 be reduced to the thickness of insulation annex 223, thereby make single-phase frequency-variable module 220 needn't be subject to electric effect of distance, thus, improve the compact conformation degree of single-phase frequency-variable module 220, reduced the volume of frequency-converting control device 200.In addition, the number of plies of many stack bus bars 221 is increased to four layers, can makes single-phase frequency-variable module 220 be applicable to high-power frequency conversion control device.
As shown in Figure 6, according to some embodiments of the present invention, in metallic support portion 222, there is at least one cooling water channel 232, to carry out cooling to single-phase frequency-variable module 220.Preferably, the water inlet 2321 of every cooling water channel 232 and delivery port 2322 all can be positioned at the same side of metallic support portion 222.Thus, be convenient to arranging of cooling water channel 232, reduced the design difficulty of interior water cooling unit 230.Particularly, every cooling water channel 232 all can be formed as U-shaped water channel.Certainly, the structure of cooling water channel 232 is not limited to this, as long as its heat radiation that can meet single-phase frequency-variable module 220 requires.
As shown in Figure 7, for convenience of many stack bus bars 221 and insulation annex 223 are linked together, according to one embodiment of present invention, the one end that exchanges the contiguous insulation annex 223 of articulamentum 2214 has multiple the first splicing ear 22141, the first splicing ears 22141 spaced apart and is connected with insulation annex 223.Certainly, in one end of the contiguous insulation annex 223 that exchanges articulamentum 2214, multiple the first splicing ears 22141 spaced apart are set, are also convenient to many stack bus bars 221 and are connected with other electric elements.
In concrete examples more of the present invention, the first splicing ear 22141 comprises: flat part 22142 and bending part 22143.Particularly, from exchanging, articulamentum 2214 extends flat part 22142 and with to exchange articulamentum 2214 in the same plane, bending part 22143 is connected with flat part 22142 is vertical.It should be noted that, do not do particular restriction for many stack bus bars 221 and the connected mode of insulation annex 223.For example, in an optional embodiment of the present invention, bending part 22143 is bolted with insulation annex 223.
Be connected with direct current stack bus bar 210 for convenience of many stack bus bars 221, as shown in Figure 7, according to one embodiment of present invention, on zero layer 2213, one end of adjacent DC stack bus bar 210 is provided with the second splicing ear 22131, on both positive and negative polarity layer 2211, one end of adjacent DC stack bus bar 210 is provided with two the 3rd splicing ear 22111, the second splicing ears 22131 spaced apart and is connected with direct current stack bus bar 210 respectively with the 3rd splicing ear 22111.Relative position for the second splicing ear 22131 and the 3rd splicing ear 22111 does not do particular determination, as long as it can be convenient to many stack bus bars 221 and be connected with other electric elements.For example, as shown in Figure 1, the second splicing ear 22131 is between two the 3rd splicing ears 22111.
As shown in Figure 7, according to one embodiment of present invention, many stack bus bars 221 further comprise: insulation strip 2218 and conductive pole 2219.Particularly, the every one deck in both positive and negative polarity layer 2211, interconnection layer 2212 and interchange articulamentum 2214 is equipped with insulation strip 2218.It should be noted that, number and the position of the insulation strip 2218 on every one deck can be determined as the case may be, for example, can be provided with an insulation strip 2218 on both positive and negative polarity layer 2211, can be provided with four insulation strip 2218 on interconnection layer 2212.Both positive and negative polarity layer 2211, interconnection layer 2212, zero layer 2213 and exchange in articulamentum 2214 on every one deck all riveted joints and have multiple conductive poles 2219, wherein the multiple conductive poles 2219 on every layer with other layers by insulating washer 2220 electrical isolation.
Also it should be noted that, as shown in Figure 7, on the upper surface of many stack bus bars 221 and lower surface, be equipped with multiple anti-tracking collets 224.Be provided with the anti-tracking groove matching with anti-tracking collets 224 at the top of the electric elements that are connected with many stack bus bars 221.Thus, increase the electric equipment compartment distance of many stack bus bars 221 and electric elements link position, increased creepage distance, improved many stack bus bar 221 integral insulation performances.
In addition, also it should be noted that, many stack bus bars 221 are by being in contact with one another and realizing electrical connection between conductive pole 2219 and corresponding electric elements.The height that the conductive pole 2219 of connecting circuit element one side stretches out is consistent.Thus, can make the structure of many stack bus bars 221 more reasonable, compact.In the time of different busbar lamination riveting conductive pole 2219, can cut off the annexation between many stack bus bars 221 and corresponding electric elements by insulating washer 2220, thereby reduce the loop area that many stack bus bar 221 internal currents form, reduced many stack bus bar 221 stray inductances.
As shown in Figure 10-Figure 13, according to the explosion-proof variable frequency motor of the embodiment of the present invention, comprising: housing 100, electric machine assembly (not shown), frequency-converting control device 200, filtering termination (not shown) and outer water cooling unit 300(are not shown).
Particularly, in housing 100, there are three the first chamber 110, the second chamber 120 and the 3rd chambers 130 that are spaced apart from each other and are communicated with.Between the first to the 3rd chamber 130, be interconnected by explosion-insulation surface, can effectively reduce the quantity of explosion suppresion surface, reduced the complex structure degree of explosion-proof variable frequency motor.Electric machine assembly is located in the first chamber 110, and frequency-converting control device 200 is located in the second chamber 120, and filtering termination is located in the 3rd chamber 130.The first to the 3rd chamber 130 being interconnected is configured to same explosion-proof chamber, again the stube cable between electric machine assembly, frequency-converting control device 200 and filtering termination is shielded in explosion-proof chamber, avoid the design of the labyrinth such as wire connection cavity, binding post, reduce wiring difficulty, reduce the electromagnetic interference of other equipment of cable to housing 100 outsides, improved the stability of explosion-proof variable frequency motor.
Electric machine assembly is connected respectively with frequency-converting control device 200 and filtering termination.Outer water cooling unit 300 is located on housing 100 lateral walls with to frequency-converting control device 200 and the heat exchange of filtering termination.Thus, reduce the volume of explosion-proof variable frequency motor, improved the heat exchange efficiency of outer water cooling unit 300.
According to the explosion-proof variable frequency motor of the embodiment of the present invention; by by single-phase frequency-variable module 220 and the stacked placement of DC filter capacitor group 240; improve the compact conformation degree of frequency-converting control device 200 in length, width and height space; not only can reduce the volume of frequency-converting control device 200; make the structure of frequency-converting control device 200 compacter, reasonable; but also be conducive to increase the electric equipment compartment distance between high voltage device and housing 100; also be conducive to around high voltage device, set up electric insulation protective device, improved the High-Voltage Insulation performance of frequency-converting control device 200.In addition, interior water cooling unit 230 is set frequency-converting control device 200 is interior, improved the radiating efficiency of frequency-converting control device 200.
Also it should be noted that, by electric machine assembly, frequency-converting control device 200 and filtering termination being located in the first to the 3rd chamber 130 being interconnected, make the structure of explosion-proof variable frequency motor compacter, reasonable.Meanwhile, reduce the wiring difficulty between electric machine assembly, frequency-converting control device 200 and filtering termination, reduced the electromagnetic interference of other equipment of cable to housing 100 outsides, improved the stability of explosion-proof variable frequency motor.
As shown in figure 10, in order further to reduce the volume of explosion-proof variable frequency motor, according to one embodiment of present invention, the second chamber 120 is positioned at the top of the first chamber 110, and the 3rd chamber 130 is positioned at one end (right-hand member as shown in Figure 10) of the first chamber 110 and the second chamber 120.The first chamber 110 can be communicated with respectively with the second chamber 120, the 3rd chamber 130.Utilize length (above-below direction as shown in Figure 10) and height (above-below direction as shown in Figure 10) space of electric machine assembly, frequency-converting control device 200, filtering termination and electric machine assembly are become one, reduce the volume of explosion-proof variable frequency motor, shorten the length of stube cable between electric machine assembly and frequency-converting control device 200, humorous wave reflection and stack are reduced, meanwhile, also reduced the impact of crest voltage on explosion-proof variable frequency motor insulation property.
In addition; also it should be noted that; the second chamber 120 is located to the top of the first chamber 110; the subregion that also helps high-low pressure element is arranged; thereby avoid the electromagnetic interference of high voltage device to low voltage component, improved the compact conformation degree in the second chamber 120 inner heights, length and width spaces, be not only conducive to increase the electric equipment compartment distance between high voltage device and housing 100; also be conducive to set up electric insulation protective device around high voltage device, improve the High-Voltage Insulation performance of explosion-proof variable frequency motor.
As shown in figure 11, according to one embodiment of present invention, between the second chamber 120 and the first chamber 110, be communicated with by the gap 111 being formed on the first chamber 110 roofs.Thus, simplify wiring process, reduced the electromagnetic interference of other equipment of cable to housing 100 outsides, improved the stability of explosion-proof variable frequency motor.In concrete examples more of the present invention, gap 111 can be rectangle or circular gap.Be understandable that, the structure of gap 111 is not limited to this, as long as it can be convenient to interconnect between electric machine assembly and frequency-converting control device 200.
As shown in figure 11, according to a concrete example of the present invention, the first chamber 110 is limited by the cylindrical stator cover 112 being located in housing 100, and electric machine assembly can be placed in cylindrical stator cover 112.Alternatively, cylindrical stator cover 112 bottoms that can be soldered in housing 100.Certainly, be understandable that, cylindrical stator cover 112 is not limited to this with the connected mode of housing 100, and for example, cylindrical stator cover 112 can also be one-body molded with housing 100.
As shown in figure 11, according to one embodiment of present invention, frequency-converting control device 200 is supported on the top of cylindrical stator cover 112.Thus, can make frequency-converting control device 200 be arranged on securely in the second chamber 120.Particularly, in one embodiment of the invention, on the roof of cylindrical stator cover 112, have upwards the support column (scheming not shown) that (as shown in the direction in Figure 11) extends, frequency-converting control device 200 is supported on the top of cylindrical stator cover 112 by support column.Support column can be welded on the roof of cylindrical stator cover 112.It should be noted that, be not limited to this for the connected mode of support column and cylindrical stator cover 112.Certainly, the modes of emplacement of frequency-converting control device 200 can be determined as the case may be.For example, frequency-converting control device 200 can also be suspended in the second chamber 120.
In sum, have the following advantages according to the explosion-proof variable frequency motor of the embodiment of the present invention:
1) by electric machine assembly, frequency-converting control device 200 and filtering termination being located in the first to the 3rd chamber 130 being interconnected, make the structure compact and reasonable more of explosion-proof variable frequency motor, reduced the wiring difficulty between electric machine assembly, frequency-converting control device 200 and filtering termination;
2) the first to the 3rd chamber 130 being interconnected is configured to an explosion-proof chamber, and electric machine assembly, frequency-converting control device 200 and filtering termination are located in explosion-proof chamber, has reduced the quantity of explosion suppresion surface, has reduced the complex structure degree of explosion-proof variable frequency motor.Meanwhile, also shorten the length of the cable between electric machine assembly, frequency-converting control device 200 and filtering termination, reduced the electromagnetic interference of other equipment of cable to housing 100 outsides, improved the stability of explosion-proof variable frequency motor;
3) pass through single-phase frequency-variable module 220 and the stacked placement of DC filter capacitor group 240, improve the compact conformation degree of frequency-converting control device 200 in length, width and height space, not only reduce the volume of frequency-converting control device 200, but also be conducive to increase the electric equipment compartment distance between high voltage device and housing 100, reduce the infringement that the stray inductance of direct current stack bus bar 210 and due to voltage spikes cause electric elements and master row insulating performance, be conducive to around high voltage device, set up electric insulation protective device, improved the High-Voltage Insulation performance of explosion-proof variable frequency motor;
4) interior water cooling unit 230 is set the single-phase frequency-variable module 220 of frequency-converting control device 200 is interior, reduced the design difficulty of interior water cooling unit 230, improved the radiating efficiency of frequency-converting control device 200;
5) by set up insulation annex 223 between many stack bus bars 221 and metallic support portion 222, spacing between many stack bus bars 221 and metallic support portion 222 can be reduced to the thickness of insulation annex 223, thereby make single-phase frequency-variable module 220 needn't be subject to electric effect of distance, and then improved the compact conformation degree of single-phase frequency-variable module 220, reduce the volume of frequency-converting control device;
6) number of plies of many stack bus bars 221 is increased to four layers, can makes single-phase frequency-variable module 220 be applicable to high-power frequency conversion control device 200.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, specific features, structure, material or the feature of description can one or more embodiment in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this specification or example and different embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (20)
1. for a frequency-converting control device for explosion-proof variable frequency motor, it is characterized in that, comprising:
Direct current stack bus bar;
The single-phase frequency-variable module of multiple stacked placements, described multiple single-phase frequency-variable modules are all connected with described direct current stack bus bar;
For described single-phase frequency-variable module is carried out to cooling interior water cooling unit; And
Multiple DC filter capacitor groups, described DC filter capacitor group is connected with described direct current stack bus bar.
2. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1, is characterized in that, described interior water cooling unit comprises:
Water pump;
At least one cooling water channel, described at least one cooling water channel is located in described single-phase frequency-variable module, and each described cooling water channel has water inlet and delivery port;
Water inlet separator, described water inlet separator is communicated with the water inlet of described water pump and described at least one cooling water channel respectively;
Go out separator, described in go out separator and be communicated with the delivery port of described water pump and described at least one cooling water channel respectively.
3. the frequency-converting control device for explosion-proof variable frequency motor according to claim 2, is characterized in that, described interior water cooling unit also comprises water water-to-water heat exchanger, described in described water water-to-water heat exchanger is connected to, goes out between separator and described water pump.
4. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1, it is characterized in that, the stacked placement of described multiple single-phase frequency-variable modules and be connected to described direct current stack bus bar one side, the stacked placement of described multiple DC filter capacitor groups and be connected to the opposite side of described direct current stack bus bar.
5. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1, is characterized in that, between two adjacent described single-phase frequency-variable modules, is provided with multiple support portions.
6. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1, is characterized in that, described single-phase frequency-variable module comprises three.
7. the frequency-converting control device for explosion-proof variable frequency motor according to claim 1, is characterized in that, each described single-phase frequency-variable module comprises:
Many stack bus bars, described many stack bus bars comprise the both positive and negative polarity layer, interconnection layer, zero layer and the interchange articulamentum that stack gradually from top to bottom, wherein said both positive and negative polarity layer, interconnection layer, zero layer and exchange between the every adjacent two layers between articulamentum and be respectively equipped with interlayer insulating film, the upper surface of described both positive and negative polarity layer is equipped with the first insulating coating, and the lower surface of described interchange articulamentum is equipped with the second insulating coating;
Metallic support portion, described metallic support portion is disposed on the below of described many stack bus bars, in wherein said metallic support portion, has described cooling water channel; And
Insulation annex, described insulation annex is located at a side of described metallic support portion and is connected with described many stack bus bars and described metallic support portion.
8. the frequency-converting control device for explosion-proof variable frequency motor according to claim 7, is characterized in that, in described metallic support portion, have at least one described in cooling water channel.
9. the frequency-converting control device for explosion-proof variable frequency motor according to claim 8, is characterized in that, the water inlet of every described cooling water channel and delivery port are all positioned at the same side of described metallic support portion.
10. the frequency-converting control device for explosion-proof variable frequency motor according to claim 9, is characterized in that, every described cooling water channel is all formed as U-shaped water channel.
11. frequency-converting control devices for explosion-proof variable frequency motor according to claim 7, it is characterized in that, one end of the described insulation annex of vicinity of described interchange articulamentum has multiple the first splicing ears spaced apart, and described the first splicing ear is connected with described insulation annex.
12. frequency-converting control devices for explosion-proof variable frequency motor according to claim 11, is characterized in that, described the first splicing ear comprises:
Flat part, described flat part extends and with described to exchange articulamentum in the same plane from described interchange articulamentum; And
With described flat part bending part connected vertically, described bending part is connected with described insulation annex.
13. frequency-converting control devices for explosion-proof variable frequency motor according to claim 12, is characterized in that, described bending part and described insulation annex are bolted.
14. frequency-converting control devices for explosion-proof variable frequency motor according to claim 7, it is characterized in that, one end of the described direct current stack bus bar of vicinity of described zero layer is configured with the second splicing ear, one end of the described direct current stack bus bar of vicinity of described both positive and negative polarity layer is configured with two the 3rd splicing ears spaced apart, and described the second splicing ear is connected with described direct current stack bus bar respectively with described the 3rd splicing ear.
15. frequency-converting control devices for explosion-proof variable frequency motor according to claim 7, is characterized in that, described many stack bus bars further comprise:
Insulation strip, wherein said both positive and negative polarity layer, interconnection layer and the every one deck exchanging in articulamentum are equipped with described insulation strip; And
Conductive pole, wherein said both positive and negative polarity layer, interconnection layer, zero layer and exchange in articulamentum on every one deck all riveted joints and have multiple described conductive poles, wherein the described multiple conductive poles on every layer pass through insulating washer electrical isolation with other layers.
16. frequency-converting control devices for explosion-proof variable frequency motor according to claim 7, is characterized in that, the described both positive and negative polarity layer of described many stack bus bars, interconnection layer, zero layer and exchange copper plate that articulamentum is 1.5mm-2.5mm by thickness and fold and form.
17. frequency-converting control devices for explosion-proof variable frequency motor according to claim 7, is characterized in that, zinc-plated processing is all carried out on the described both positive and negative polarity layer of described many stack bus bars, interconnection layer, zero layer and the surface that exchanges articulamentum, and thickness of coating is greater than 5 μ m.
18. frequency-converting control devices for explosion-proof variable frequency motor according to claim 7, it is characterized in that, described the first insulating coating and described the second insulating coating neighboring are along adopting the processing of pressing edge sealing process, so that form totally-enclosed structure between the first insulating coating and the second insulating coating.
19. frequency-converting control devices for explosion-proof variable frequency motor according to claim 7, is characterized in that, the upper surface roughness of described metallic support portion requires lower than 1.6um-3.2um, and flatness requires lower than 0.1mm/m.
20. 1 kinds of explosion-proof variable frequency motors, is characterized in that, comprise according to the frequency-converting control device described in any one in claim 1-19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410060332.9A CN103872924B (en) | 2014-02-21 | 2014-02-21 | Variable frequency controller and anti-explosion variable frequency motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410060332.9A CN103872924B (en) | 2014-02-21 | 2014-02-21 | Variable frequency controller and anti-explosion variable frequency motor with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103872924A true CN103872924A (en) | 2014-06-18 |
| CN103872924B CN103872924B (en) | 2017-02-22 |
Family
ID=50911130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410060332.9A Active CN103872924B (en) | 2014-02-21 | 2014-02-21 | Variable frequency controller and anti-explosion variable frequency motor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103872924B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943656A (en) * | 2019-12-10 | 2020-03-31 | 东风汽车集团有限公司 | Double-motor controller structure of integrated DCDC for hybrid vehicle |
| CN113437880A (en) * | 2020-03-20 | 2021-09-24 | 上海颂奇机电设备有限公司 | Frequency conversion management governing system |
| WO2021197409A1 (en) * | 2020-04-01 | 2021-10-07 | Atlas Copco (Wuxi) Compressor Co., Ltd. | Inverter power assembly |
| CN113497543A (en) * | 2020-04-01 | 2021-10-12 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Frequency converter power assembly |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826837A (en) * | 2010-06-12 | 2010-09-08 | 四川吉风电源科技有限公司 | Variable frequency control power module of wind power generator |
| CN201937061U (en) * | 2011-01-30 | 2011-08-17 | 浙江冠华电气有限公司 | Laminated bus bar |
| CN202309493U (en) * | 2011-11-15 | 2012-07-04 | 青岛天信电气有限公司 | 3300V mineral explosion-proof frequency converter water cooler |
| CN202374123U (en) * | 2011-11-11 | 2012-08-08 | 青岛天信变频电机有限公司 | 500KW mine explosion-proof variable-frequency motor all-in-one machine |
| CN103107713A (en) * | 2013-01-29 | 2013-05-15 | 上海电气集团股份有限公司 | Laminated busbar used for diode clamp type three-level converter |
| CN203219128U (en) * | 2013-03-29 | 2013-09-25 | 青岛天信变频电机有限公司 | 3300V mining, flame-proof and intrinsic-safety-type frequency-conversion speed-regulation all-in-one machine |
| CN103368359A (en) * | 2012-04-11 | 2013-10-23 | 台达电子工业股份有限公司 | Converter power unit and busbar thereof |
| CN203308559U (en) * | 2013-05-08 | 2013-11-27 | 昆山晋桦豹胶轮车制造有限公司 | Independent cooling system of high-power explosion-proof diesel engine |
| CN203423604U (en) * | 2013-08-27 | 2014-02-05 | 深圳市英威腾电气股份有限公司 | Explosion-proof frequency converter |
-
2014
- 2014-02-21 CN CN201410060332.9A patent/CN103872924B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826837A (en) * | 2010-06-12 | 2010-09-08 | 四川吉风电源科技有限公司 | Variable frequency control power module of wind power generator |
| CN201937061U (en) * | 2011-01-30 | 2011-08-17 | 浙江冠华电气有限公司 | Laminated bus bar |
| CN202374123U (en) * | 2011-11-11 | 2012-08-08 | 青岛天信变频电机有限公司 | 500KW mine explosion-proof variable-frequency motor all-in-one machine |
| CN202309493U (en) * | 2011-11-15 | 2012-07-04 | 青岛天信电气有限公司 | 3300V mineral explosion-proof frequency converter water cooler |
| CN103368359A (en) * | 2012-04-11 | 2013-10-23 | 台达电子工业股份有限公司 | Converter power unit and busbar thereof |
| CN103107713A (en) * | 2013-01-29 | 2013-05-15 | 上海电气集团股份有限公司 | Laminated busbar used for diode clamp type three-level converter |
| CN203219128U (en) * | 2013-03-29 | 2013-09-25 | 青岛天信变频电机有限公司 | 3300V mining, flame-proof and intrinsic-safety-type frequency-conversion speed-regulation all-in-one machine |
| CN203308559U (en) * | 2013-05-08 | 2013-11-27 | 昆山晋桦豹胶轮车制造有限公司 | Independent cooling system of high-power explosion-proof diesel engine |
| CN203423604U (en) * | 2013-08-27 | 2014-02-05 | 深圳市英威腾电气股份有限公司 | Explosion-proof frequency converter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943656A (en) * | 2019-12-10 | 2020-03-31 | 东风汽车集团有限公司 | Double-motor controller structure of integrated DCDC for hybrid vehicle |
| CN113437880A (en) * | 2020-03-20 | 2021-09-24 | 上海颂奇机电设备有限公司 | Frequency conversion management governing system |
| WO2021197409A1 (en) * | 2020-04-01 | 2021-10-07 | Atlas Copco (Wuxi) Compressor Co., Ltd. | Inverter power assembly |
| CN113497543A (en) * | 2020-04-01 | 2021-10-12 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Frequency converter power assembly |
| CN113497543B (en) * | 2020-04-01 | 2023-07-11 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Frequency converter power assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103872924B (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9769962B2 (en) | Motor controller | |
| CN102822687B (en) | Voltage detection assembly for battery module and battery module including same | |
| KR102009443B1 (en) | Cartridge And Battery Module Comprising The Same | |
| JP5244876B2 (en) | Power converter and electric vehicle | |
| CN1268190C (en) | Modular converter unit | |
| CN103872924A (en) | Variable frequency controller and anti-explosion variable frequency motor with same | |
| US20170063203A1 (en) | Inverter Assembly | |
| CN102804447A (en) | Battery module including sensing members with novel structure | |
| US10263300B2 (en) | Battery pack including fluid resistant over mold | |
| CN105469997A (en) | Method for packaging and connecting electric storage cells for efficiency and cycle/life expectancy | |
| CN109690825A (en) | Link block | |
| CN108806992B (en) | Super capacitor module structure | |
| CN102412704A (en) | Low-voltage high-current three-phase driving power module group structure | |
| CN104201867A (en) | Three-level IGBT power cabinet based on heat pipe radiator | |
| CN105429478A (en) | Power conversion apparatus | |
| CN107769587A (en) | A kind of light rail auxiliary power module and light rail AuCT | |
| CN102684119A (en) | High-voltage bus duct | |
| CN103872832A (en) | Anti-explosion variable frequency motor | |
| WO2017136788A1 (en) | Inverter assembly | |
| CN106992691B (en) | Electronic device for a motor vehicle | |
| CN210092811U (en) | Laminated busbar and electrical product | |
| US11476737B2 (en) | Integrated power control assemblies with built-in cooling systems | |
| CN107294356B (en) | Power conversion device | |
| CN102347701B (en) | Inverter device | |
| CN216414206U (en) | Motor controller and vehicle power system with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |