CN104779816B - Tunneling machine cutting motor frequency-converter power device - Google Patents
Tunneling machine cutting motor frequency-converter power device Download PDFInfo
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- CN104779816B CN104779816B CN201510160345.8A CN201510160345A CN104779816B CN 104779816 B CN104779816 B CN 104779816B CN 201510160345 A CN201510160345 A CN 201510160345A CN 104779816 B CN104779816 B CN 104779816B
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- side door
- explosion
- electric cabinet
- converter power
- door
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- 230000005641 tunneling Effects 0.000 title claims abstract description 25
- 239000004065 semiconductor Substances 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 5
- 239000013307 optical fiber Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 238000011161 development Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention discloses a kind of tunneling machine cutting motor frequency-converter power device, including explosion-proof electric cabinet, and it is arranged at the frequency-converter power module in the explosion-proof electric cabinet, the explosion-proof electric cabinet is provided with side door and front door, the front door is respectively arranged on the adjacent wall of the explosion-proof electric cabinet two with the side door, the side door is retractable hinged door, the hinge of the side door be arranged at the front door to sidewall edge, the frequency-converter power module includes motionless component in side door moving assembly and cabinet, the side door moving assembly includes power semiconductor, the side door moving assembly is arranged on the inwall residing for the side door of the explosion-proof electric cabinet, motionless component includes capacitance component and control circuit in the cabinet, motionless component is arranged in the explosion-proof electric cabinet in the cabinet.The tunneling machine cutting motor facilitates underground to safeguard with frequency-converter power device volume is small, power density is high.
Description
Technical field
The present invention relates to electric and electronic technical field, a kind of tunneling machine cutting motor frequency-converter power device is particularly related to.
Background technology
Development machine is the visual plant of coal mine operation, and it passes through main cutting motor constantly fractured rock.At present, it is main
Cutting motor carries out speed governing using the speed regulating method for becoming number of pole-pairs.Become number of pole-pairs speed regulating method by changing motor stator winding
The mode of connection change motor stator number of pole-pairs, thus reach speed governing purpose.The method belongs to step speed regulation, its it is differential compared with
Greatly, causing the main cutting motor of development machine cannot obtain stepless speed control characteristic, it is impossible to various not equal when meeting headwork
The demand of level rock stratum, influences manufacturing schedule.
Using the main cutting motor of variable frequency regulating speed control, can effectively solve driving owner cutting motor cannot stepless speed control cut
Cut the problem of rock stratum.But currently used for the frequency converter equipment under coal mine, due to environmental factor, its using being restricted,
On the one hand, coal mine low-converter needs all to be sealed in electronic component and circuit arrangement in explosion-proof chamber body, the opposing party
Power loss when power electronic devices in the frequency converter of face works, can produce substantial amounts of heat, it is therefore desirable to distribute heat
Go out.
But, two kinds of main heat sink modes of the general explosion-proof frequency converter of mine, heat pipe heat radiation and water-cooled are applied at present
Radiating, the two is bulky, and water-cooling also needs to set cooled plate and a set of independent water-cooling circulating system to meet
The radiating requirements of frequency converter.Further, since the flameproof enclosure of frequency converter is weighed very much, and complete to safeguard to meet ore deposit underground site
Deng work, existing explosion-proof frequency converter is generally more roomy by cabinet, and internal each structure member is separately mounted at the interior of flame proof cabinet
Very big service clearance is left in wall, centre, causes volume big, and quality is big, and power density is low.
To meet small space under mine, each functional unit has size very high and weight to limit on development machine.Cause
This, common explosion-proof frequency converter can not meet development machine high power density while taking into account maintainable demand, it is impossible to be transplanted to driving
Used in Electrical Control case.
The content of the invention
In view of this, it is an object of the invention to propose a kind of tunneling machine cutting motor frequency-converter power device, the driving
Machine cutting motor facilitates underground to safeguard with frequency-converter power device volume is small, power density is high.
The tunneling machine cutting motor provided based on the above-mentioned purpose present invention includes explosion-proof electric cabinet with frequency-converter power device, with
And be arranged at the frequency-converter power module in the explosion-proof electric cabinet, the explosion-proof electric cabinet is provided with side door and front door, it is described before
Door is respectively arranged on the adjacent wall of the explosion-proof electric cabinet two with the side door, and the side door is retractable hinged door, should
The hinge of side door be arranged at the front door to sidewall edge, the frequency-converter power module is included in side door moving assembly and cabinet not
Dynamic component, the side door moving assembly includes power semiconductor, and the side door moving assembly is arranged at the explosion-proof electric cabinet
Side door residing for inwall on, motionless component includes capacitance component and control circuit in the cabinet, and motionless component is set in the cabinet
In in the explosion-proof electric cabinet.
Preferably, the main body of the side door of the explosion-proof electric cabinet is provided with the side door water with flame proof Yu water-cooling function
Cold heat sink.
Preferably, being provided with cooling water flow conduits inside the side door water-filled radiator, the cooling water flow conduits are with outside water supply
System connection.
Optionally, the side door moving assembly includes the side door water-filled radiator, and copper radiating liner plate, insulated gate pair
The low sense composite bus bar of bipolar transistor element, commutation diode, discharge resistance, L-type, drive circuit assembly, cable terminal rack；Institute
State copper radiating liner plate and be arranged at the side door water-filled radiator inner surface, the insulated gate bipolar transistor element, rectification
Diode and discharge resistance may be contained within the copper radiating liner plate upper surface, and the low sense composite bus bar of L-type is arranged at insulated gate
Bipolar transistor device upper surface, the cable terminal rack, copper radiating liner plate, drive circuit assembly set gradually from back to front
In the inner surface of the side door water-filled radiator.
Preferably, the commutation diode, insulated gate bipolar transistor element, discharge resistance and the compound mother of the low sense of L-type
Row is connected by copper bar or cable with the cable terminal rack.
Optionally, motionless component includes direct current capacitors, capacitance connection composite bus bar, wiring bus bar block, control in the cabinet
Circuit unit processed, current sensor, fastening clip for cable, inlet-outlet line cable；It is automatically controlled that the direct current capacitors is arranged at the flame proof
Case middle part, the binding post of the direct current capacitors is placed towards the front door of the explosion-proof electric cabinet, the compound mother of the capacitance connection
Row is arranged on the binding post of the direct current capacitors, before the control circuit unit is arranged on the direct current capacitors
Side, towards front door, the inlet-outlet line cable is arranged on the rear side of direct current capacitors, the turnover to the control panel of the control circuit unit
Line cable outlet end is fixed by the fastening clip for cable, and connects external circuit, the turnover through the current sensor
The line cable other end connects the cable terminal rack.
Preferably, being designed with positive and negative staggeredly overlap joint busbar on the right side of the capacitance connection composite bus bar, the capacitance connection is answered
The bond end of busbar is closed towards the side door moving assembly.
Preferably, when the side door is closed, the low sense composite bus bar of L-type is overlapped with the capacitance connection composite bus bar
To together, and connection is fastened on the wiring bus bar block.
Preferably, the drive circuit assembly is connected on the control panel of the control circuit unit by optical fiber, composition
Control loop.
A kind of tunneling machine cutting motor frequency-converter power device provided in an embodiment of the present invention, realizes as can be seen from the above
Set in the narrow and small explosion-proof electric cabinet of development machine small volume, high power density with it is quick it is maintainable take into account simultaneously it is mining
Converter plant.
Brief description of the drawings
Fig. 1 is embodiment of the present invention tunneling machine cutting motor frequency-converter power device schematic front view；
Fig. 2 is embodiment of the present invention tunneling machine cutting motor frequency-converter power device schematic top plan view；
Fig. 3 is that embodiment of the present invention tunneling machine cutting motor frequency-converter power device side door opens dimensional structure diagram；
Fig. 4 illustrates for embodiment of the present invention tunneling machine cutting motor frequency-converter power device side door moving assembly stereochemical structure
Figure.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
Fig. 1 is embodiment of the present invention tunneling machine cutting motor frequency-converter power device schematic front view, and Fig. 2 is real for the present invention
Apply a tunneling machine cutting motor frequency-converter power device schematic top plan view.As shown in Figure 1-2, in the present embodiment, the driving
Machine cutting motor frequency-converter power device includes explosion-proof electric cabinet 1 and the frequency-converter power being arranged in the explosion-proof electric cabinet 1
Module.Wherein, the explosion-proof electric cabinet 1 is provided with front door 101 and side door 102.
Fig. 3 is that embodiment of the present invention tunneling machine cutting motor frequency-converter power device side door opens dimensional structure diagram.
As shown in figure 3, in the present embodiment, the frequency-converter power module includes motionless component 3 two in side door moving assembly 2 and cabinet
Point.Each part relies on the inwall or door hinge of explosion-proof electric cabinet 1 to install, and the frequency-converter power device for forming high power density is whole
Body.
In the present embodiment, the side door moving assembly 2 includes the power semiconductor of the frequency-converter power module.Should
Side door moving assembly 2 is arranged on the inwall of the side door 102 of explosion-proof electric cabinet 1.102 points of the front door 101 and the side door
It is not arranged on the adjacent wall of the explosion-proof electric cabinet two, the side door is retractable hinged door, the hinge of the side door is set
In the front door to sidewall edge.Side door 102 is opened, the maintenance work of power device can be easily realized, and need not leave
Service clearance, reduces frequency-converter power device overall volume.Motionless component 3 is the cutting motor frequency-converter power in the cabinet
The capacitance component and control circuit of device, the space of its front door side for being arranged at the explosion-proof electric cabinet 101, near front door position
Put.It is easy to unlatching front door 101 to be safeguarded.
In this manual, the direction of front door 101 for defining explosion-proof electric cabinet 1 is the leading flank of explosion-proof electric cabinet 1, the front door
101 to side for explosion-proof electric cabinet 1 trailing flank；Side door 102 is the right flank of the explosion-proof electric cabinet 1 of explosion-proof electric cabinet 1, side
Door 102 is the left surface of explosion-proof electric cabinet 1 to side.
Fig. 4 illustrates for embodiment of the present invention tunneling machine cutting motor frequency-converter power device side door moving assembly stereochemical structure
Figure.As shown in figure 4, in the present embodiment, the side door moving assembly 2 includes side door water-filled radiator 4, copper radiating liner plate 5, absolutely
Edge grid bipolar transistor device 6, commutation diode 7, discharge resistance 8, L-type it is low sense composite bus bar 10, drive circuit assembly 11,
Cable terminal rack 9, Inlet and outlet water interface 19.
In the present embodiment, the side door moving assembly 2 is arranged on the side door 102 of explosion-proof electric cabinet 1, the side door 102
Main body includes side door water-filled radiator 4.Side door water-filled radiator 4 is integrated with flame proof and water-cooling function, is provided with inside it cold
But water flow passage, the cooling water flow conduits are connected with the Inlet and outlet water interface 19 on the side door 102 of explosion-proof electric cabinet 1, and then connect outside
Water system.
The copper radiating liner plate 5 is arranged on the inner surface of side door water-filled radiator 4, is provided with copper radiating liner plate 5
Temperature relay and platinum sensor, the temperature relay and platinum sensor are used to exceed in advance in temperature of power module
When constant temperature is spent, controller is sent a signal to, controller control frequency-converter power device is shut down.In the present embodiment, the insulated gate
Bipolar transistor device 6, commutation diode 7 and discharge resistance 8 are arranged on copper radiating liner plate 5 upper surface.
The main body of the side door 102 is side door water-filled radiator 4, not only avoids being separately provided radiator increase volume and weight
Amount, and coordinate copper radiating liner plate 5, the working junction temperature of insulated gate bipolar transistor element 6 can be effectively reduced, and then improve insulation
The current output capability of grid bipolar transistor device 6.The insulated gate bipolar transistor element 6, commutation diode 7 and put
Resistance 8 is equably arranged on copper radiating liner plate 5, can effectively using copper radiating liner plate 5 and side door water-filled radiator 4.
In the present embodiment, the insulated gate bipolar transistor element 6 is six single tubes, evenly distributed, constitutes three-phase
Inverter bridge leg.In other embodiments, the insulated gate bipolar transistor element 6 or three two-tube insulated gate bipolars
The three-phase inversion bridge arm of transistor npn npn element composition.
The commutation diode 7 is installed on copper radiating liner plate 5 upper surface near door hinge position, in the present embodiment, institute
Commutation diode 7 is stated for three, rectified three-phase circuit is constituted.In other embodiments, the commutation diode 7 can also be six
The rectified three-phase circuit of the individual composition of single tube commutation diode 7.
In the present embodiment, the low sense composite bus bar 10 of the L-type is arranged on the upper table of insulated gate bipolar transistor element 6
Face, the short side folding surface of the low sense composite bus bar 10 of L-type is designed with positive and negative staggeredly overlap joint busbar.The low sense composite bus bar 10 of L-type side long
It is be arranged in parallel with copper radiating liner plate 5, is installed on the upper surface of insulated gate bipolar transistor element 6.
The commutation diode 7, insulated gate bipolar transistor element 6, discharge resistance 8 sense composite bus bar 10 low with L-type
Part is connected by copper bar or cable with cable terminal rack 9, forms complete three phase rectifier inverter main circuit.In the present embodiment,
Frequency-converter power module had not only included rectification circuit but also including inverter circuit.
In the present embodiment, the cable terminal rack 9 is arranged on the inner surface of side door water-filled radiator 4, positioned at the side
Between hinge and the copper radiating liner plate 5 of door 102, it is easy to Cable Management, save space, to becoming after without prejudice to unlatching side door 102
Frequency power device is safeguarded.
In the present embodiment, the drive circuit assembly 11 is arranged on the inner surface of side door water-filled radiator 4, positioned at described
Copper radiating liner plate 5 is being provided with the contralateral side of the one end of the cable terminal rack 9.I.e. described cable terminal rack 9, copper radiating liner plate 5, drive
Dynamic circuit unit 11 is juxtaposed on the inner surface of side door water-filled radiator 4 successively by rear side to front side.
The circuit interface of drive circuit assembly 11 is easy to and the motionless component of explosion-proof electric cabinet 1 towards the inner side of explosion-proof electric cabinet 1
3 connections, form control circuit.
In the present embodiment, motionless component 3 is arranged in the cabinet of explosion-proof electric cabinet 1 in the cabinet, including direct current capacitors
12nd, capacitance connection composite bus bar 13, wiring bus bar block 18, control circuit unit 14, current sensor 15, fastening clip for cable 16,
Inlet-outlet line cable 17.
Wherein, the direct current capacitors 12 is arranged on the middle part of explosion-proof electric cabinet 1, and the binding post of direct current capacitors 12 is facing forward
Door 101 is placed, the convenient connection capacitance connection composite bus bar 13, easy to maintenance behind unlatching front door 101, safeguards empty without reserved
Between.
The rear side of the direct current capacitors 12 leaves the installation folding space of inlet-outlet line cable 17, is easy to arrange turnover cable
17, and be conveniently connected with the cable terminal rack 9 of side door moving assembly 2.
The capacitance connection composite bus bar 13 is arranged on the front end binding post of direct current capacitors 12.It is multiple in capacitance connection
The right side of busbar 13 is closed, positive and negative staggeredly overlap joint busbar is designed with, the bond end of capacitance connection composite bus bar 13 is moved towards side door
Component 2, is easy to sense composite bus bar 10 low with above-mentioned L-type to overlap.
In the present embodiment, the control circuit unit 14 is arranged on the anterior position of direct current capacitors 12, controls circuit
Control panel in component 14 is opened wide towards front door 101, opens easy to maintenance behind front door 101, and space is safeguarded without reserved.
In the present embodiment, the inlet-outlet line cable 17 is arranged on the rear side of direct current capacitors 12, and uses the cable
Geometrical clamp 16 fixes the port of export of the inlet-outlet line cable 17, and the port of export connects external electrical through the current sensor 15
Road.The other end of the inlet-outlet line cable 17 is connected on the cable terminal rack 9 of side door moving assembly 2.
In the present embodiment, after the door hinge of side door moving assembly 2 is closed, low sense composite bus bar 10 and the institute of L-type
State capacitance connection composite bus bar 13 to snap into together, and be bolted and be fastened on the wiring bus bar block 18.
The drive circuit assembly 11 is connected on the control panel of the control circuit unit 14 by optical fiber, composition control
Loop.
It can be seen that, the present invention provide tunneling machine cutting motor with frequency-converter power module by power semiconductor be arranged on every
On the side door inwall of quick-fried electric cabinet, side door moving assembly is constituted, side door indoor design bosh realizes heat dissipation cold plate function,
Reduce volume, improve power density, and can easily realize the maintenance work of power device；The capacitance component of frequency converter and control
Circuit is arranged in explosion-proof electric cabinet, motionless component in composition cabinet, near anterior locations, is easy to be safeguarded from front door.
Those of ordinary skill in the art should be understood：Specific embodiment of the invention is the foregoing is only, and
The limitation present invention, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. are not used in,
Should be included within protection scope of the present invention.
Claims (8)
1. a kind of tunneling machine cutting motor frequency-converter power device, it is characterised in that including explosion-proof electric cabinet, and be arranged at institute
The frequency-converter power module in explosion-proof electric cabinet is stated,
The explosion-proof electric cabinet is provided with side door and front door, and the front door is respectively arranged at the explosion-proof electric cabinet with the side door
On two adjacent walls, the side door is retractable hinged door, the hinge of the side door be arranged at the front door to sidewall edge,
The frequency-converter power module includes motionless component in side door moving assembly and case,
The side door moving assembly includes power semiconductor, and the side door moving assembly is arranged at the side of the explosion-proof electric cabinet
On inwall residing for door,
Motionless component includes capacitance component and control circuit in the case, and motionless component is arranged at the explosion-proof electric cabinet in the case
It is interior；
Wherein, the side door moving assembly includes the side door water-filled radiator, and copper radiating liner plate, insulated gate bipolar crystalline substance
The low sense composite bus bar of body tube elements, commutation diode, discharge resistance, L-type, drive circuit assembly, cable terminal rack；
The copper radiating liner plate is arranged at the side door water-filled radiator inner surface,
The insulated gate bipolar transistor element, commutation diode and discharge resistance may be contained within the copper radiating liner plate upper table
Face,
The low sense composite bus bar of L-type is arranged at insulated gate bipolar transistor member top surface,
The cable terminal rack, copper radiating liner plate, drive circuit assembly are set in turn in the side door water-cooling from back to front
The inner surface of device.
2. tunneling machine cutting motor frequency-converter power device according to claim 1, it is characterised in that the flame proof is automatically controlled
The main body of the side door of case is provided with the side door water-filled radiator with flame proof Yu water-cooling function.
3. tunneling machine cutting motor frequency-converter power device according to claim 1, it is characterised in that the side door water-cooled
Cooling water flow conduits are provided with inside radiator, the cooling water flow conduits are connected with outside water system.
4. tunneling machine cutting motor frequency-converter power device according to claim 1, it is characterised in that the pole of the rectification two
Pipe, insulated gate bipolar transistor element, discharge resistance and the low sense composite bus bar of L-type are turned by copper bar or cable with the cable
Connect frame connection.
5. tunneling machine cutting motor frequency-converter power device according to claim 1, it is characterised in that motionless in the case
Component includes that direct current capacitors, capacitance connection composite bus bar, wiring bus bar block, control circuit unit, current sensor, cable are solid
Clamp, inlet-outlet line cable；
The direct current capacitors is arranged at explosion-proof electric cabinet middle part, and the binding post of the direct current capacitors is towards the flame proof
The front door of electric cabinet is placed,
The capacitance connection composite bus bar is arranged on the binding post of the direct current capacitors,
The control circuit unit is arranged on the front side of the direct current capacitors, and the control panel of the control circuit unit is towards preceding
Door,
The inlet-outlet line cable is arranged on the rear side of direct current capacitors, and the inlet-outlet line cable outlet end passes through the fastening clip for cable
It is fixed, and connect external circuit, the inlet-outlet line cable other end connection cable Change-over frame through the current sensor.
6. tunneling machine cutting motor frequency-converter power device according to claim 5, it is characterised in that the capacitance connection
Positive and negative staggeredly overlap joint busbar is designed with the right side of composite bus bar, the bond end of the positive and negative staggeredly overlap joint busbar is moved towards the side door
Dynamic component.
7. tunneling machine cutting motor frequency-converter power device according to claim 6, it is characterised in that when closing the side
Men Shi, together with the low sense composite bus bar of the L-type is snapped into the capacitance connection composite bus bar, and connection is fastened to the busbar
On tagblock.
8. tunneling machine cutting motor frequency-converter power device according to claim 6, it is characterised in that the drive circuit
Component is connected on the control panel of the control circuit unit by optical fiber, composition control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160345.8A CN104779816B (en) | 2015-04-07 | 2015-04-07 | Tunneling machine cutting motor frequency-converter power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160345.8A CN104779816B (en) | 2015-04-07 | 2015-04-07 | Tunneling machine cutting motor frequency-converter power device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104779816A CN104779816A (en) | 2015-07-15 |
| CN104779816B true CN104779816B (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510160345.8A Active CN104779816B (en) | 2015-04-07 | 2015-04-07 | Tunneling machine cutting motor frequency-converter power device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818960B (en) * | 2016-09-14 | 2019-11-29 | 中车株洲电力机车研究所有限公司 | A kind of power semiconductor modular for track vehicle |
| CN108123614B (en) * | 2016-11-28 | 2020-12-29 | 中车株洲电力机车研究所有限公司 | a power module |
| CN107436024B (en) * | 2017-08-21 | 2023-07-21 | 广东美的暖通设备有限公司 | Electric cabinet assembly and air conditioning system |
| CN113726130A (en) * | 2021-09-14 | 2021-11-30 | 珠海格力电器股份有限公司 | Frequency converter main control unit and frequency converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546018A (en) * | 2013-11-05 | 2014-01-29 | 深圳市英威腾电气股份有限公司 | Power unit and manufacturing method thereof |
| EP2717461A1 (en) * | 2011-06-02 | 2014-04-09 | Hitachi Automotive Systems, Ltd. | Power conversion apparatus |
| CN203942725U (en) * | 2014-06-27 | 2014-11-12 | 深圳市英威腾电气股份有限公司 | Cabinet, frequency converter and explosion-proof frequency converter |
-
2015
- 2015-04-07 CN CN201510160345.8A patent/CN104779816B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2717461A1 (en) * | 2011-06-02 | 2014-04-09 | Hitachi Automotive Systems, Ltd. | Power conversion apparatus |
| CN103546018A (en) * | 2013-11-05 | 2014-01-29 | 深圳市英威腾电气股份有限公司 | Power unit and manufacturing method thereof |
| CN203942725U (en) * | 2014-06-27 | 2014-11-12 | 深圳市英威腾电气股份有限公司 | Cabinet, frequency converter and explosion-proof frequency converter |
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