CN104092401A - Inverter circuit of fan driving module of tunnel dedusting car - Google Patents
Inverter circuit of fan driving module of tunnel dedusting car Download PDFInfo
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- CN104092401A CN104092401A CN201410356523.XA CN201410356523A CN104092401A CN 104092401 A CN104092401 A CN 104092401A CN 201410356523 A CN201410356523 A CN 201410356523A CN 104092401 A CN104092401 A CN 104092401A
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Abstract
The invention discloses an inverter circuit of a fan driving module of a tunnel dedusting car. The tunnel dedusting car comprises a sealed type compartment separated into a power distribution chamber and a dedusting chamber, a sealing door and a heat dissipation opening are formed in the power distribution chamber, a power distribution device is configured in the power distribution chamber, and the power distribution device comprises an electric generator, a power distribution cabinet and a fan for heat dissipation. The power distribution cabinet is connected with the electric generator for power extraction, the fan for heat dissipation is connected with the power distribution cabinet through the driving module, and the driving module comprises a rectification circuit, a filter circuit and the inverter circuit. The inverter circuit comprises a power tube driving chip which is connected to the power output end of a microprocessor, and therefore corresponding power tubes can be driven to be alternatively switched on and switched off according to pulse width modulation signals output by a microprocessor of the microprocessor circuit . The tunnel dedusting car and accessory facilities of the car can meet the dedusting requirements of the tunnel construction environment well.
Description
Technical field
The present invention relates to cleaner, relate in particular to a kind of tunnel dedusting car and affiliated facility thereof.
Background technology
The airborne dust problem of constructing tunnel is very outstanding, not only has a strong impact on environment, is also unfavorable for the healthy of operating personnel, thereby must take effective dedusting means.Can be, for the good dust pelletizing system of a set of effect, it not only will spend higher cost, also can take not low man-hour with imagining, and this has weakened unit in charge of construction and carry out the enthusiasm of dust removal process widely.In view of existing dust pelletizing system is difficult to the defect of promoting in tunnel construction environment, be just necessary how to build portable cleaner system and the affiliated facility that a set of cost is lower, can be recycled, to meet the dedusting demand of tunnel construction environment.
Summary of the invention
The defect existing for prior art, the object of the present invention is to provide tunnel dedusting car and affiliated facility thereof, to meet the dedusting demand of tunnel construction environment.
For solving above technical problem, the invention provides the inverter circuit of the blower fan driver module of a kind of tunnel dedusting car, this tunnel dedusting car comprises the closed compartment that is separated into switchgear house and dirt pocket; This switchgear house is provided with sealed door and thermovent, and this switchgear house internal configurations has controller switching equipment; This controller switching equipment comprises the blower fan of generator, power distribution cabinet and heat transmission, this power distribution cabinet connects this generator power taking, the blower fan of this heat transmission is connected to described power distribution cabinet by driver module, and the alternating current that this driver module provides this power distribution cabinet is converted to required alternating current or the direct current of blower fan of this heat transmission; This driver module comprises for alternating current being converted to galvanic rectification circuit, for realizing the filter circuit of galvanic filtering and energy storage effect and realizing the inverter circuit of frequency modulation and voltage modulation for completing direct current to alternating current conversion, it is characterized in that, described inverter circuit comprises power pipe driving chip, described power pipe driving chip is connected to the power take-off of microcontroller circuit, to according to the pulse width modulating signal of the microprocessor output of described microcontroller circuit, drive corresponding power tube alternate conduction and shutoff.
Compared with prior art, the present invention at least desirable following technique effect in a certain respect:
1, meet the dedusting demand of tunnel construction environment.Dust pelletizing system is integrated in compartment, can be transported to easily as required and need the place of dedusting to carry out dedusting, has the features such as efficiency is high, effective, cost is low, and temporary construction place, very applicable tunnel is suitable for.
2, improve power distribution cabinet performance, to meet the demand of tunnel dedusting car distribution system, show many aspects: service entrance switch chamber, kilowatt-hour meter chamber and the outlet chamber of (1) power distribution cabinet line structure are separated from each other, become separately chamber, be convenient to adopt modular design, be convenient to change separately some elements; (2) rear side of power distribution cabinet is provided with bus-bar, and lead-in circuit breaker is connected with bus-bar with kilowatt-hour meter, and this contributes to reduce and connects wire, and on the one hand escapable cost can solve the difficulty of cabling bundle line on the other hand; (3) cabling mode after the line of power distribution cabinet employing plate, contributes to save wire and particularly reduces copper conductor consumption, can save better cost; (4) power distribution cabinet hoisting structure is made very simply, and it can be pressed into by sheet metal " L " template, then on first side plate of " L " template and the second side plate, offers lifting hole(eyelet) and installing hole; (5) power distribution cabinet can coordinate with console mode power distribution cabinet or wall-hanging power distribution cabinet by different angle of assembling, thereby meets the installation requirement of these two kinds of power distribution cabinets, have simple in structure, the advantages such as convenient, safe and reliable, versatility is good are installed.
3, cleaner is handling better.By the output mode of microcontroller circuit control driver module, be conducive to neatly by pre-provisioning request output voltage, thereby meet the demand of different user; For dust guard pollution abatement equipment, can, according to the setting signal of man-machine interface circuit, carry out stepless frequency conversion control to motor.
Brief description of the drawings
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skill in the art.Accompanying drawing is only for the object of preferred implementation is shown, and do not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 a is the outside drawing of embodiment of the present invention tunnel dedusting car;
Fig. 1 b is the layout of cleaner and controller switching equipment in embodiment of the present invention tunnel dedusting car;
Fig. 2 a is embodiment of the present invention distribution enclosure box general assembly drawing;
Fig. 2 b is the front view of Fig. 2 a;
Fig. 2 c is the left view of Fig. 2 a;
Fig. 2 d is the right view of Fig. 2 a;
Fig. 2 e is the rearview of Fig. 2 a;
Fig. 2 f is the vertical view of Fig. 2 a;
Fig. 2 g is the rearview of Fig. 2 a;
Fig. 3 a is the front view that adopts embodiment of the present invention power distribution cabinet wire structures;
Fig. 3 b is the rearview of Fig. 3 a;
Fig. 3 c is that the A-A of Fig. 3 a is to view;
Fig. 4 a is the front view that adopts embodiment of the present invention power distribution cabinet line structure; Fig. 4 b is the left view of Fig. 4 a;
Fig. 4 c is the vertical view of Fig. 4 a;
Fig. 4 d is the upward view of Fig. 4 a;
Fig. 5 is the schematic diagram of embodiment of the present invention power distribution cabinet hoisting structure;
Fig. 6 a is the right view of embodiment of the present invention power distribution cabinet mounting means one;
Fig. 6 b is the front view of embodiment of the present invention power distribution cabinet mounting means one;
Fig. 6 c is the left view of embodiment of the present invention power distribution cabinet mounting means one;
Fig. 6 d is the vertical view of embodiment of the present invention power distribution cabinet mounting means one;
Fig. 7 a is the right view of embodiment of the present invention power distribution cabinet mounting means two;
Fig. 7 b is the front view of embodiment of the present invention power distribution cabinet mounting means two;
Fig. 7 c is the left view of embodiment of the present invention power distribution cabinet mounting means two;
Fig. 7 d is the vertical view of embodiment of the present invention power distribution cabinet mounting means two.
Fig. 8 a is embodiment of the present invention blower fan driver module composition frame chart;
Fig. 8 b is that the one of embodiment of the present invention blower fan driver module realizes circuit.
Embodiment
A lot of details are set forth in the following description so that fully understand the present invention.But the present invention can implement to be much different from alternate manner described here, and those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, and therefore the present invention is not subject to the restriction of following public specific embodiment.
Referring to Fig. 1 a, Fig. 1 b, be the schematic diagram of tunnel of the present invention dedusting car simultaneously.Described tunnel dedusting car comprises closed compartment 001, and it cuts off 002 by compartment and is divided into switchgear house 100 and dirt pocket 200:
Switchgear house 100 is provided with plug-type sealed door 003 and thermovent G1, and thermovent G1 place can arrange filter screen.Switchgear house 100 internal configurations controller switching equipments, described controller switching equipment (can be matched auxiliary generator by generator, both are generally diesel engine generator) 104, the composition such as power distribution cabinet 101 and heat transmission blower fan 103, power distribution cabinet 101 connects generator 104 power takings, blower fan 103 is powered by power distribution cabinet 101, and heat when startup, generator 104 being produced blows out outside thermovent G1.
Dirt pocket 200 is provided with plug-type sealed door 004, air inlet G2, air outlet G3, and air inlet G2, air outlet G3 place can arrange filter screen.Dirt pocket 200 internal configurations cleaners.It is made up of described cleaner with blower fan 203 and storage dirt bag 202 etc. air channel 204, screen pack 201, dust suction, air channel 204 is connected between air inlet G2 and air outlet G3, it is inner near air inlet G2 one end that screen pack 201 is arranged on air channel 204, blower fan 203 is arranged on one end near air outlet G2 in air channel and obtains electric power to connect power distribution cabinet 101, storage dirt bag 202 is arranged on the below of screen pack 201 to collect dust
Blower fan 203 can be multiple, and they make impeller high-speed driving after starting, and the blade of impeller constantly, to air acting, makes the air at impeller place obtain energy, and discharges with high speed.Simultaneously the air of air channel 204 front ends constantly supplements the air in impeller, causes and in dust collecting port, forms instantaneous vacuum, in dust collecting port, forms a quite high Negative Pressure Difference with external atmosphere pressure.Under this Negative Pressure Difference effect, the dust at air inlet place enters the air channel 204 of cleaner with air-flow, filter through the filter 201 of 204 inside, air channel, and dust is stayed in storage dirt bag 202, and air is discharged cleaner after filtering again, so far complete whole dust removal process.
Tunnel of the present invention dedusting car is integrated in compartment, can be transported to easily as required and need the place of dedusting to carry out dedusting, has the features such as efficiency is high, effective, cost is low, and temporary construction place, very applicable tunnel is suitable for.
For the embodiment of the present invention, common power distribution cabinet not too applicable, be mainly manifested in: (1) usually power distribution cabinet, its wire structures great majority are the main switch of left incoming line, right side is outlet chamber and kilowatt-hour meter chamber, wherein between wire inlet unit, outgoing line unit and kilowatt-hour meter chamber, be not divided into independent compartment, be unfavorable for changing element; (2) cabling mode of power distribution cabinet is wiring before plate, can see obvious line wiring, and this mode of connection relatively wastes wire, and the machining period needing is also longer; (3) lead-in circuit breaker is to kilowatt-hour meter before for copper conductor connects, more for the copper conductor that the more power distribution cabinet of epi-position is required, and its cabling and bundle line are all inconvenient; (4) hoisting structure of power distribution cabinet is all welded on the casing of power distribution cabinet, is not easy to divert and management; (5) hoisting structure of different power distribution cabinet models is not identical, makes the versatility of distribution enclosure box poor.
For this reason, a kind of power distribution cabinet of embodiments of the invention optimal design and auxiliary device, improve the properties of product of power distribution cabinet thus, is described in detail as follows.
Referring to Fig. 2 a～Fig. 2 g, be the total assembling structure of embodiment of the present invention distribution enclosure box simultaneously.The casing of described power distribution cabinet is provided with service entrance switch chamber, kilowatt-hour meter chamber and outlet chamber: service entrance switch chamber is provided with door-plate 1 and rear shrouding, the indoor service entrance switch mounting panel 12 of establishing; Kilowatt-hour meter chamber is provided with shrouding 7 behind door-plate 2 and kilowatt-hour meter chamber, indoor electric meter installation board 10, the electric meter installation board 11 established, and wherein door-plate 2 can arrange lead sealing 4 and coded lock 5 above, in case other people illegally open; Outlet chamber is provided with shrouding 6 after door-plate 3 and outlet switch, the indoor mounting rail 8 that sets out wiretap, and after described outlet switch, shrouding 6 is with pulling buckle 9, can facilitate On/Off.Described wall box is established nameplate 13 with identification product, and four jiaos of rear walls arrange the hoisting structure 14 of hanger formula, to the casing of power distribution cabinet is installed, below further illustrate.
Referring to Fig. 3 a～Fig. 3 c, be the power distribution cabinet wire structures of the embodiment of the present invention simultaneously.Described power distribution cabinet adopts upper, middle and lower to be divided into the layout of three Room, wherein: top is service entrance switch chamber S1, is provided with a lead-in circuit breaker 15, is connected to kilowatt-hour meter chamber S2 with cable 21; Middle part is kilowatt-hour meter chamber S2, is provided with some kilowatt-hour meters 16; Bottom is outlet chamber S3, is provided with earthing bar 20, ensures that outlet ground connection is convenient.
The present invention is provided with bus-bar at the rear side of power distribution cabinet, and lead-in circuit breaker 15 is connected with bus-bar 18 with kilowatt-hour meter 16; Can reduce like this and connect wire consumption, escapable cost on the one hand, solves the difficulty of cabling bundle line on the other hand.
As shown in Fig. 3 a～Fig. 3 c, kilowatt-hour meter chamber S2 is provided with electric mounting board 19, and kilowatt-hour meter 16 is installed on the front side of electric mounting board 19; And the turnover cabling of power distribution cabinet is cabling after the plate of electric mounting board 19, this contributes to further to save copper conductor consumption.
In addition, be provided with bus-bar mounting bar 22 and lower bus-bar mounting bar 23 on electric mounting board 19, the two ends of bus-bar 18 are respectively installed on bus-bar mounting bar 22 and lower bus-bar mounting bar 23, are convenient to install, fix bus-bar 18.
In above embodiment, between bus-bar 18 and lead-in circuit breaker 15, be connected by wire; And the cable 17 inlet wire sides of kilowatt-hour meter 16 are connected with bus-bar 18, outgoing line side is connected with outlet air switch.Because being mainly connected by bus-bar 18 between lead-in circuit breaker 15 and kilowatt-hour meter 16, can save more copper conductor.
This wire structures adds bus-bar at power distribution cabinet rear side, both can save wire cost, can solve again the difficulty of cabling bundle line, and its structure is very simple, installation, convenient disassembly, and cost of manufacture is lower, and security performance is better, thereby has good market prospects.
Simultaneously referring to Fig. 4 a～Fig. 4 d, for adopting the more excellent example of power distribution cabinet line structure of the present invention.Described power distribution cabinet S employing upper, middle and lower is divided into the layout of three Room, wherein: top is service entrance switch chamber S1; Middle part is kilowatt-hour meter chamber S2; Bottom is outlet chamber S3.
Service entrance switch chamber S1, the kilowatt-hour meter chamber S2 of above-mentioned power distribution cabinet and S3 tri-Room, outlet chamber are separated from each other, appearance looks elegant simplicity generosity; Also be convenient to adopt modular design, for the some elements of independent replacing, only need to change correlated parts and just can use, and without large-scale change, can save a lot of design times, also bring great convenience to processing and manufacturing; Especially, the operation stability of the relatively original power distribution cabinet of power distribution cabinet is better, and fail safe improves.
As shown in Fig. 4 a～Fig. 4 d, some top board wire inlet/outlet holes 25 are set on the top board 24 of service entrance switch chamber S1, they are top board circular hole and top board square hole, wherein: top board circular hole is through hole; Top board square hole is knock down hole.
As shown in Fig. 4 a～Fig. 4 d, some base plate wire inlet/outlet holes 27 are set on the base plate 26 of outlet chamber S3, they are base plate circular hole and base plate square hole, wherein: base plate circular hole and base plate square hole are respectively knock down hole.
Above-mentioned power distribution cabinet can be realized console mode or wall-hanging installation by hoisting structure 3, and the mounting means of line wherein carries out as follows:
1, the square hole on the circular hole on base plate, square hole and top board is knock down hole, and wherein, the square hole on square hole and base plate on top board need adopt professional tool just can knock out, and circular hole adopts general tool just can knock out;
2, when power distribution cabinet is, when wall hanging is installed and line is exposed conduit, can knock out circular hole or top board square hole that base plate is less, thereby realize the line of the mode such as bottom or top or top and the bottom combination of power distribution cabinet;
3,, by the larger square hole abate of base plate, can realize the bottom line that power distribution cabinet lands while installation;
4, above scheme could be taken into account the multiple mounting modes of power distribution cabinet, multiple line mode, thereby realizes the batch Prefabrication of power distribution cabinet and user's peculation!
In above embodiment, turnover cabling is to adopt cabling mode after the plate of ammeter installation panel, can not see line wiring, and fast wiring is convenient, saves man-hour, can save again copper and lead; And cabling mode is before cabling before plate, can see obvious line wiring, this kind of needed wire of the mode of connection is more, and the man-hour spending in the time that cabling connects up is more.
In addition, power distribution cabinet rear side can add bus-bar, both can save wire cost, can solve again the difficulty of cabling bundle line.
In addition, the external door of power distribution cabinet adopts shrouding to add the form that bolt is fixing, in the time of switch gate, can directly take off the form of hinged door relatively, the space that will take can save a lot of switch gate time.
Referring to Fig. 5, it is a preferred embodiment of power distribution cabinet hoisting structure of the present invention.Described power distribution cabinet hoisting structure (hereinafter to be referred as hoisting structure) comprises the hanger of " L " template 14, on the first side plate wherein and the second side plate, offer a lifting hole(eyelet) 141 and multiple installing hole 142, wherein can run through screw or bolt etc. securing member, thus " L " template 1 is installed on the casing of power distribution cabinet.
Alternatively, installing hole 142 is multiple circular holes, or is multiple square holes, also can be an oblong slots.Be convenient to like this adjust described " L " the assembling height of template 1 and distribution enclosure box, thereby the versatility of increase hoisting structure.
Above-mentioned hoisting structure can fold the first side plate and the second side plate by sheet metal or other material, forms thus one " L " template 14, then on first side plate of " L " template and the second side plate, offers lifting hole(eyelet) 141 and installing hole 142.Certainly, described " L " template 14 also can be made by forging type, does not repeat them here.
Above-mentioned hoisting structure can coordinate with console mode power distribution cabinet or wall-hanging power distribution cabinet by different angle of assembling, thereby meets the installation requirement of these two kinds of power distribution cabinets, below brief description.
Referring to Fig. 6 a～Fig. 6 d, be the mounting means of console mode power distribution cabinet simultaneously.When assembling, one of them side plate of " L " template 14 is fixed on to casing S upper, another side plate stretches out to casing outside, to fix with wall or other railroad car lateral wall.The setting height(from bottom) of described " L " template 14 is upper and lower along concordant with casing S's, certainly also can adopt other setting height(from bottom).
Referring to Fig. 7 a～Fig. 7 d, be the mounting means of wall-hanging power distribution cabinet simultaneously.When assembling, two side plates of " L " template are fixed on the angle of casing S, and make the lifting hole(eyelet) 141 on " L " template 14 expose casing S.After, power distribution cabinet hanging can be fixed at wall or other railroad car lateral wall.
As can be seen here, hoisting structure of the present invention just can coordinate with console mode power distribution cabinet or wall-hanging power distribution cabinet as long as change setting angle, thereby meet the installation requirement of these two kinds of power distribution cabinets, have simple in structure, the advantages such as convenient, safe and reliable, versatility is good are installed, thereby good market prospect.
The embodiment of the present invention is also optimized the driver module of blower fan, and described driver module has filtering decoupling formula anti-interference function, below describes.
Blower fan in the embodiment of the present invention in controller switching equipment, cleaner is all preferably frequency conversion fan.Without loss of generality, describe here as an example of the frequency conversion fan in controller switching equipment example, its driver module has filtering decoupling formula anti-interference function, below describes.
Referring to Fig. 8 a, it is the preferred embodiment of the driver module of blower fan.In the control system of described blower fan, it is connected to the output of power distribution cabinet 101 module blower fan 10 by driver module 102, be converted to the required alternating current of blower fan 103 or direct current in order to the alternating current that power distribution cabinet 101 is provided; Especially, the input stage of described driver module 102 is provided with filtering decoupling circuit 1020, it is preferably RC filtering decoupling circuit, formed by the current-limiting resistance R being connected in series and filter capacitor C, make thus the output plus terminal of power distribution cabinet and current-limiting resistance R and the filter capacitor C that output ground termination enters to be connected in series, can suppress the differential mode interference from power distribution cabinet 101, ensure the accuracy of blower fan 103 transfer of data.
Filtering decoupling circuit 1020 in the present embodiment is RC filtering decoupling circuit, and it,, as the preposition simulation low-pass filter of AC signal input channel, has jamproof effect concurrently; Between two terminals of alternating current-direct current signal input channel, access decoupling capacitance, can be high frequency differential mode interference signal bypass is provided.Be in passing with pointing out, consider from anti-interference angle, RC filter is better than LC filter: RC filter is dissipation type filter, noise energy can be become to thermal energy consumption and dissipate; LC filter can produce additional magnetic interference, thereby inductance will add radome.
Driver module 102 in above-described embodiment can be optimized, the driver module 102 of this example comprises the parts such as rectification circuit 1021, power factor correction circuit 1022, filter circuit 1023, inverter circuit 1024 and microcontroller circuit 1025, man-machine interface circuit 1026 successively, wherein: rectification circuit 1021 forms (being preferably full bridge rectifier) by rectifier diode or bridge heap, comprise necessary interference filtering circuit, its major function is that alternating current is converted to direct current; Circuit of power factor correction 1022 is selectable unit (SU), be made up of power semiconductor and control chip, it is also connected to the Active PFC end of microcontroller circuit 1025, and effect is that input current is approached is sinusoidal wave, reduce mains by harmonics content, realize the object that improves power factor; Filter circuit 1023 (being preferably RC filter circuit) is mainly made up of elements such as electrochemical capacitors, completes galvanic filtering and energy storage effect; Inverter circuit 1024 is made up of power model and drive circuit, power model can be Intelligent Power Module, and it is also connected to the driving signal end of described microcontroller circuit, and its major function is, complete the conversion of direct current to three-phase alternating current, realize frequency modulation and voltage modulation object; Microcontroller circuit 1025 is made up of microprocessor (DSP) and peripheral circuit; the order that it is sent according to man-machine interface circuit 1026; send corresponding command signal; power ratio control factor correcting circuit 1022 and inverter circuit 1024 are worked; and according to circuit feedback information, carry out necessary circuit protection and troubleshooting.Like this, described embodiment is by the output mode of microcontroller circuit control driver module, is conducive to neatly by pre-provisioning request output voltage, thereby meets the demand of different user.
Referring to Fig. 8 b, be the embodiment of part circuit structure in driver module.Specifically for the inverter circuit of motor 31 and the example of microcontroller circuit of blower fan, its working method is: civil power becomes direct current through rectification circuit 1021, after electrochemical capacitor filtering, the two ends of the DC power supply 241 of access inverter circuit 1024, access filter capacitor between the two ends of described DC power supply 241.And the microprocessor of microcontroller circuit 1025 (MCU/DSP) 251 is according to the setting signal of man-machine interface circuit 1026, the motor 1031 of blower fan 103 is controlled.
In the present embodiment, described inverter circuit 1024 comprises power pipe driving chip 10242, described power pipe driving chip 10242 is connected to the microprocessor (MCU/DSP) 10251 of microcontroller circuit 1025, so that the pulse width modulating signal of exporting according to microprocessor 10251, drives corresponding power tube alternate conduction and shutoff.Concrete, described inverter circuit 1024 comprises six power tube S1～S6, these six power tubes are divided into three groups, a phase winding of every group power control three phase electric machine 1031.
The concrete connected mode of each power tube is: the source electrode of power tube S1, S2, S3 connects one end of DC power supply 10241 jointly, the drain electrode of power tube S4, S5, S6 connects the other end of DC power supply 10241 jointly, the tie point of the source electrode of the drain electrode of power tube S1 and power tube S4 connects the U phase terminal of motor, the tie point of the source electrode of the drain electrode of power tube S2 and power tube S5 connects the V phase terminal of motor, and the source electrode tie point of the drain electrode of power tube S3 and power tube S6 connects the W phase terminal of motor; Power tube, the grid of power tube S1, S2, S3, S4, S5, S6 connects respectively an output of power pipe driving chip 10242, and each input of described power pipe driving chip 10242 is controlled by output pulse width conditioning signal PWM1, PWM2, PWM3, PWM4, PWM5, PWM6 Zhong mono-tunnel of microprocessor 10251 respectively.
When start, microprocessor 251 produces corresponding 6 road pulse width modulating signals according to the motor speed of setting, and drives signal PWM1～PWM6; Drive 6 power tubes (MOSFET or IGBT) S1～S6 by power pipe driving chip 10242; The alternate conduction of these power tubes and shutoff, produce three-phase modulations waveform, and output voltage is adjustable, the three-phase alternating current of changeable frequency, outputs to U, V, the W terminals of motor 1031, thereby realizes the stepless frequency control of motor 1031.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an inverter circuit for the blower fan driver module of tunnel dedusting car, this tunnel dedusting car comprises the closed compartment that is separated into switchgear house and dirt pocket; This switchgear house is provided with sealed door and thermovent, and this switchgear house internal configurations has controller switching equipment; This controller switching equipment comprises the blower fan of generator, power distribution cabinet and heat transmission, this power distribution cabinet connects this generator power taking, the blower fan of this heat transmission is connected to described power distribution cabinet by driver module, and the alternating current that this driver module provides this power distribution cabinet is converted to required alternating current or the direct current of blower fan of this heat transmission; This driver module comprises for alternating current being converted to galvanic rectification circuit, for realizing the filter circuit of galvanic filtering and energy storage effect and realizing the inverter circuit of frequency modulation and voltage modulation for completing direct current to alternating current conversion, it is characterized in that, described inverter circuit comprises power pipe driving chip, described power pipe driving chip is connected to the power take-off of microcontroller circuit, to according to the pulse width modulating signal of the microprocessor output of described microcontroller circuit, drive corresponding power tube alternate conduction and shutoff.
2. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 1 dedusting car, is characterized in that, described inverter circuit comprises six power tubes, and described six power tubes are divided into three groups, wherein a phase winding of every group power control three phase electric machine.
3. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 1 dedusting car, is characterized in that, described six power tubes are MOSFET power tube or IGBT power tube.
4. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 1 dedusting car, it is characterized in that, described driver module comprises power factor correction circuit man-machine interface circuit, described power factor correction circuit is arranged between described rectification circuit and described filter circuit, described power factor correction circuit is connected to the Active PFC end of described microcontroller circuit, and described man-machine interface circuit is connected to the input of described microcontroller circuit.
5. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 1 dedusting car, is characterized in that, the input stage of described driver module is provided for suppressing the filtering decoupling circuit from the differential mode interference of described power supply unit; Described filtering decoupling circuit is RC filtering decoupling circuit, and described RC filtering decoupling circuit forms by being serially connected with the output plus terminal of described power supply unit and exporting current-limiting resistance and the filter capacitor held.
6. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 1 dedusting car, is characterized in that, the casing of described power distribution cabinet is separated into independently service entrance switch chamber, kilowatt-hour meter chamber and outlet chamber; Described service entrance switch chamber is arranged at the upper space of power distribution cabinet, and some top board wire inlet/outlet holes are set on the top board of described service entrance switch chamber, and described service entrance switch arranges lead-in circuit breaker in chamber; Described kilowatt-hour meter chamber is arranged at the central space of power distribution cabinet, and described kilowatt-hour meter is provided with some kilowatt-hour meters in chamber; Described outlet chamber is arranged at the lower space of power distribution cabinet, and some base plate wire inlet/outlet holes are set on the base plate of described outlet chamber.
7. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 6 dedusting car, it is characterized in that, described top board wire inlet/outlet hole comprises some top board circular holes and some top board square holes, and described base plate wire inlet/outlet hole comprises some base plate circular holes and some base plate square holes; Described top board circular hole is through hole, and described top board square hole is knock down hole, and described base plate circular hole and described base plate square hole are respectively knock down hole.
8. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 7 dedusting car, is characterized in that, cabling after the plate that the turnover cabling of described power distribution cabinet is ammeter installation panel; The rear side of described power distribution cabinet is provided with bus-bar, between described lead-in circuit breaker and described kilowatt-hour meter, is connected to described bus-bar; Between described bus-bar and described lead-in circuit breaker, be connected by wire; The inlet wire side of the cable of described kilowatt-hour meter is connected with described bus-bar, and outgoing line side is connected with outlet air switch.
9. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 8 dedusting car, is characterized in that, described kilowatt-hour meter chamber is provided with electric mounting board, and described kilowatt-hour meter is installed on the front side of described electric mounting board; On described electric mounting board, be provided with bus-bar mounting bar and lower bus-bar mounting bar, one end of described bus-bar is arranged on described upper bus-bar mounting bar, and the other end is arranged on described lower bus-bar mounting bar; Described outlet chamber is provided with earthing bar.
10. the inverter circuit of the blower fan driver module of tunnel as claimed in claim 6 dedusting car, is characterized in that, described in state power distribution cabinet four jiaos of casing rear walls the hoisting structure of hanger formula is set; Described hoisting structure comprises one " L " template; Described " L " template comprises the first side plate and the second side plate; On described the first side plate and described the second side plate, offer a lifting hole(eyelet) and some installing holes, to described " L " template is installed on power distribution cabinet by securing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356523.XA CN104092401A (en) | 2014-07-24 | 2014-07-24 | Inverter circuit of fan driving module of tunnel dedusting car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356523.XA CN104092401A (en) | 2014-07-24 | 2014-07-24 | Inverter circuit of fan driving module of tunnel dedusting car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104092401A true CN104092401A (en) | 2014-10-08 |
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| CN201410356523.XA Pending CN104092401A (en) | 2014-07-24 | 2014-07-24 | Inverter circuit of fan driving module of tunnel dedusting car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993822A (en) * | 2021-03-02 | 2021-06-18 | 杨胜正 | Integrated form switch board |
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| CN112993822A (en) * | 2021-03-02 | 2021-06-18 | 杨胜正 | Integrated form switch board |
| CN112993822B (en) * | 2021-03-02 | 2023-03-31 | 山东科美帝电气科技有限公司 | Integrated form switch board |
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Application publication date: 20141008 |