CN108539962A - A kind of integrated elevator variable frequency device - Google Patents
A kind of integrated elevator variable frequency device Download PDFInfo
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- CN108539962A CN108539962A CN201810392884.8A CN201810392884A CN108539962A CN 108539962 A CN108539962 A CN 108539962A CN 201810392884 A CN201810392884 A CN 201810392884A CN 108539962 A CN108539962 A CN 108539962A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
Abstract
The present invention relates to a kind of frequency converter, more particularly, to a kind of integrated elevator variable frequency device, including I O board and the driving plate, capacitor board, onboard PG cards and the LCD display panel that are connect simultaneously with I O board.Therefore, the invention has the advantages that：1, energy-efficient, compatible strong；2, volume is minimum in domestic industry same specification product；3, cell phone application is debugged；4, remote monitoring and the storage of high in the clouds data.
Description
Technical field
The present invention relates to a kind of frequency converters, more particularly, to a kind of integrated elevator variable frequency device.
Background technology
Elevator frequency converter includes for the elevator special converter of lift car elevating movement drive control and for elevator
Gate switch moves the door-inverter of drive control.Due to the door-inverter magnitude of value and overall market used in elevator
Small scale, technology content are relatively low, and general elevator frequency converter refers mainly to elevator special converter.Therefore, following analysis is main
It is unfolded for elevator special converter, no longer includes the door-inverter of elevator.
Elevator is as special equipment, it is desirable that stable, safe, comfortable, efficient.Since frequency converter has accurate adjust
Speed control and power saving function, are widely applied in elevator, in addition to hydraulic ladder and part escalator, overwhelming majority electricity
Ladder has been all made of frequency converter to realize speed regulating control function.
Elevator frequency converter product Downstream Market has uniqueness, elevator frequency converter industry requirement situation and elevator industry
Demand status is closely related.First, the huge size of population in China and urbanization process will be persistently kept for a long time to increasing elevator newly
Great demand；Secondly, the huge elevator storage constantly built up in previous and current city process will push elevator reparing
The demand in market is transformed, and China's economy develop smoothly and faster, living standards of the people raising and aging of population etc. because
Element so that building installs elevator additional becomes trend as walking-replacing tool.Currently, domestic-investment brand enterprise in China's frequency converter markets
About 24% or so the market share is occupied, other 76% or so market shares are still occupied by foreign capitals brand.
Above-mentioned factor will be that elevator controlling integrated system brings vast market prospect.
Then, since the operation of elevator is directly associated with the ride comfort of people, to elevator frequency converter speed governing control
The performance requirement of system is higher.Elevator frequency converter does not use the V/F of common frequency converter generally as the high-end product in frequency converter
Frequency conversion control technique generally employs the technology of closed-loop vector control and directly torque control system.With the continuous hair of elevator technology
The raising of exhibition and energy saving requirement, external elevator variable frequency technology have gradually developed to the double PWM modulation technologies of four-quadrant again.Using this
The elevator frequency converter of technology can realize the two-way flow of energy, and when elevator cars with full load uplink, motor is in motoring condition；
When elevator cars with full load declines, motor is in generating state, by potential energy at electric energy feedback to power grid.
The control technology of elevator frequency converter is directed to elevator operation based on general closed-loop vector control type frequency converter
The demand of characteristic, ride comfort and safety, and show its unique professional feature, it is desirable that the relevant technologies are developed and production
Enterprise has deep elevator industry inside information.Control driving integrated technique is the new opplication trend of current elevator variable frequency technology
One of, i.e., elevator signal control function and drive control function are integrated on same computer control board, using this technology
Elevator frequency converter is known as integrated elevator drive control device.Due to the control driveability of integrated elevator drive control device
High with degree, the runnability of elevator is more outstanding, moreover it is possible to substantially reduce the manufacturing cost of elevator complete-system vendor, therefore integration
Elevator driving controller is approved and is matched by more and more complete-system vendors.For industrialized country, I
The starting of state frequency converter industry is than later, in the early 1990s, domestic enterprise just starts the effect of understanding frequency converter, and opens
Begin to attempt to use, external frequency converter product formally pours into the market of China.The development of China's frequency converter substantially can be following several
A stage：
1, the frequency converter development stage.
In late 1970s to the eighties, mainly Machinery Ministry Tianjin Electrified Transmission institute (voltage-type) and Machinery Ministry
Xi'an power electronic technique institute (current mode), develops product, but poor reliability, needs perfect.In the early 1980s, big
Even electrical machinery plant has introduced Japanese Toshiba Tech, equips out product, there is certain influence.
2, the universal frequency converter foreign countries import stage
To the end of the nineties, time more than ten years it is mainly Introduced From Abroad frequency converter in the 1980s, earliest is Japan
Three cultivate SVF types and Japanese fuji G5/P5 types, and Beijing and Shenzhen are two cities recommended earliest, to steel, oil, petrochemical industry,
The Industry Effects such as chemical industry, chemical fibre, water supply are larger.Then, Mitsubishi, An Chuan, Toshiba, Panasonic, Ming electricity She, ABB, AB, Siemens,
Danfoss, Lenze etc. subsequently enter China, make being more widely applied for universal frequency converter.Siemens, ABB, AB, sieve during this
Bin Kang, CEGELEC high-voltage frequency converter have certain application.Taiwan is general to be passed, none distant factory, south is from, the good spirit in Chengdu, Shandong
Develop domestic frequency converter in favour Fengdu.It passes institute and metallurgical automation institute develops Invertor for AC to AC.
3, general and high-pressure frequency-conversion develops on a large scale the stage.
Late 1990s are general frequency conversion and high-pressure frequency-conversion great development stage till now.There are 4 spies in this stage
Point：
A. external famous brand fully enters China and has part to found the factory in China；
B. the domestic universal frequency converter of voltage-frequency formula has family more than 170；
C. there is family more than 20 in addition to foreign brand name in high-voltage frequency converter；
D. no matter universal frequency converter or high-voltage frequency converter technology have sizable raising, technology more to attain maturation, use neck
Domain is more wide.
In recent years, with the continuous improvement of domestic enterprise's independent research and development capacity, foreign capitals brand is in closed-loop vector control technology
On monopolization gradually broken, emerging Suzhou Mo Nake, Xin Shida etc., some have grasped closed-loop vector control type elevator variable frequency
The enterprise of device core technology.These enterprises have been approached or reach advanced world standards in product technology, and product price is relatively outer
Certain advantage is also formed for money brand, has certain competitive strength in elevator frequency converter field.
At this stage, by the branch in terms of releasing related preferential policy and tax revenue to the development of the multiple energy conservation and environmental protection industries in China
It holds, various advantages certainly will be brought to the enterprise for producing energy-saving environmental protection device.In such devices, frequency converter is in energy-saving ring
Advantage in terms of guarantor is obvious.All use motor in great number of driving system in industry, by frequency converter change working frequency and
Amplitude reaches energy-efficient effect, so that frequency converter industry is benefited a lot of.Motor using frequency converter effect be exactly for speed governing,
And reduce starting current.In order to generate variable voltage and frequency, which first has to the convert alternating current of power supply be direct current
Electric (DC), this process is rectification.Direct current (DC) is transformed to the device of alternating current (AC), scientific terminology is
" inverter " (inverter).It is the inverse of certain fixed frequency and certain voltage that general inverter, which is DC power supply inversion,
Variable power source.For inversion be frequency is adjustable, the adjustable inverter of voltage we be known as frequency converter.Frequency converter output waveform be
Analog sine is mainly used in threephase asynchronous speed governing and uses, is called variable-frequency governor.For being used primarily in instrument instrument
The higher variable frequency inverter of waveform requirements in the detection device of table, will arrange waveform, can be with outputting standard
Sine wave, be variable-frequency power sources.General variable-frequency power sources is 15--20 times of frequency converter price.
Frequency conversion is not can have many occasion frequency conversions may not be able to power saving with power saving everywhere.As electronic circuit, become
Frequency device itself also wants power consumption (the about 3-5% of rated power).One 1.5 air-conditioning itself power consumptions also have 20-30W through calculating,
It is equivalent to an altar lamp frequency converter to run under power frequency, there is electricity-saving function, be true.But his precondition is：
It is high-power and be wind turbine/load of the pumps；Device itself has electricity-saving function (software support)；Long-term continuous operation.This is body
Three conditions of existing power savings.In addition to this, it doesn't matter economizes on electricity, without what meaning.If being not added with precondition
Say that frequency converter power frequency operation is energy saving, exactly exaggerate or commercial speculation.It is aware of fact, you can be cleverly you using him
Service.Otherwise it is exactly to follow blindly, readily believe and " being deceived " centainly it is noted that use occasion and use condition are better correctly applied.
The energy saving reactive power of power factor compensation not only increases the fever of line loss and equipment, and more important is the reductions of power factor to lead
The reduction of network re-active power is caused, a large amount of reactive energy consumption is in circuit, and equipment service efficiency is low, and waste is serious,
After frequency converter, since the effect of filter capacitor inside frequency converter increases electricity to reduce reactive loss
The active power of net.Soft start energy-saving motor hard reboot causes serious impact to power grid, but also can require net capacity
Excessively high, damage when high current that when startup generates and vibrations to baffle and valve is very big, to equipment, the service life of pipeline
It is totally unfavorable.And after using frequency converting and energy saving device, starting current will be made to start from scratch using the soft start function of frequency converter, most
Big value is also no more than rated current, alleviates the impact to power grid and the requirement to power supply capacity, extends equipment and valve
Service life.Save the maintenance cost of equipment.
Theoretically, frequency converter can be used in all mechanical equipments with motor in, motor on startup,
Electric current can be 5-6 times higher than specified, can not only influence the service life of motor but also consume more electricity systems in design
Can be there are certain surplus on choice of electrical machine, the speed of motor is to immobilize, but in actual use, want sometimes
It is run with relatively low or higher speed, therefore carry out Frequency Conversion Modification to be necessary.Frequency converter can realize that motor is soft and open
Dynamic, compensation power factor (PF) achievees the purpose that energy-saving speed regulating by changing equipment input voltage frequency, and can be provided to equipment
The defencive functions such as overcurrent, overvoltage, overload.
Invention content
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：
A kind of integrated elevator variable frequency device, which is characterized in that the driving plate that is connect including I O board and simultaneously with I O board,
Capacitor board, onboard PG cards and LCD display panel.
Preferably, the driving plate includes MCU chip group, and the Enthernet networks being connect simultaneously with MCU chip
Module, CAN bus module, USB module, Switching Power Supply, detection circuit module, electrifying startup module, analog signal detection module,
PIM module, main relay and IGBT drive module.
Preferably, further include the RSL modules being connect with MCU chip, RS485 network modules, RS422 network modules and
DB9 modules；The MCU chip group include MCU chip and the signal reset unit being connect with MCU chip, crystal oscillator unit,
EEPROM storage chips, real time clock unit, encoded signal processing unit and fan control unit.
Preferably, the Enthernet network modules include w5500 chips, OCU SPI communications chip and externally
RJ45 network interfaces；The main relay is 1 or 3 road band-type brake relays.
Preferably, the Switching Power Supply include upper bridge driving circuit, lower bridge driving circuit, relay and fan circuit,
Mosfet driving circuits, transformer export feedback circuit and all the way 5v output ends；The detection circuit module includes PIM temperature
Spend detection circuit, busbar voltage detection circuit, bus current detection circuit, starting relay state detection circuit, braking performance test
Circuit, U/V/W current detection circuits and short-circuit detecting circuit.
Preferably, the electrifying startup module includes start-up resistor and the relay that is connect with start-up resistor；It is described
PIM module includes rectified three-phase circuit, three-phase inverting circuit and braking circuit；The IGBT drive module includes upper half-bridge
Driving circuit, lower half-bridge drive circuit and braking IGBT drive circuit.
Preferably, the upper half-bridge drive circuit includes the optocoupler of model ACPL-W341 and by peripheral electricity
The voltage stabilizing sub-circuit that road is connect with optocoupler, the voltage stabilizing sub-circuit include the NPN transistor of two model pbss304nx, point
A resistance RB1 is connected after the base stage docking for not being transistor QB1 and transistor QB3, the transistor QB1 and transistor QB3
It connect with optocoupler, is connect with optocoupler after being connect with resistance RB1 after the emitter connecting resistance RA1 of transistor QB1 afterwards；On resistance RA1
One diode DA1 of parallel connection；The collector of transistor QB1 is connect with optocoupler, and the emitter of transistor QB1 is further connected with resistance
RAB1；After the collector connecting resistance RB2 of transistor QB1 it is in parallel with resistance RAB1 after export；The periphery single channel includes polarity electricity
Hold E13, two concatenated capacitance C22 and capacitance C26, the resistance R23 being sequentially connected in series and zener diode ZD5；The polarity electricity
Hold E13, capacitance C26 and zener diode ZD5 parallel connections and is followed by optocoupler, capacitance C22 and resistance R23 and transistor QB1 collectors company
It connects and is followed by optocoupler；Export the voltage stabilizing of high level and low level both ends bridging resistance R24, capacitance C24 and two differential concatenations
Diode ZD3 and zener diode ZD6.
Preferably, the lower half-bridge drive circuit and braking IGBT drive circuit simultaneously with a model acpl-
The driving chip of 332j connects, and driving chip input terminal connects an input peripheral circuit；The braking IGBT drive circuit packet
Include the zener diode ZD22 and capacitance C17 in parallel successively for being connected across 14 jiaos and 16 jiaos of driving chip, the capacitance being sequentially connected in series
C16 and capacitance C20 is connected across 11 jiaos and 16 jiaos of driving chip, the zener diode ZD26 and zener diode ZD1 being sequentially connected in series
Bridge 9 jiaos and 16 jiaos of driving chip；After the connecting node of resistance R16 mono- termination capacitor C16 and capacitance C20 with driving chip 13
Angle connects, and the other end is connect for 16 jiaos with driving chip；After the connecting node of resistance R11 mono- termination capacitor C16 and capacitance C20, separately
One end is connect for 16 jiaos with driving chip.
Preferably, lower half-bridge drive circuit includes the NPN transistor of two model pbss304nx, is transistor respectively
One resistance RB3 of connection is followed by driving core after the docking of the base stage of QB2 and transistor QB4, the transistor QB2 and transistor QB4
11 jiaos of piece, after the emitter connecting resistance RA2 of transistor QB2 with driving chip 11 jiaos connect；Two poles in parallel on resistance RA2
Pipe DA2；The collector of transistor QB2 meets 24VN, and the emitter of transistor QB2 is further connected with after resistance RAB2 and resistance RB4 and crystalline substance
The collector of body pipe QB4 connects；The connecting node of resistance RAB2 and resistance RB4 are output, the bridging of output low and high level end according to
Capacitance C25, the resistance R30 of secondary parallel connection and the zener diode ZD2 and zener diode ZD4 of differential concatenation.
Preferably, the input peripheral circuit includes the capacitance C23 in parallel successively for being connected across 5 jiaos and 7 jiaos of driving chip
With resistance R31,6 jiaos of driving chip is connected with 7 jiaos, and 5 jiaos of driving chip is connected with 8 jiaos, and between 7 jiaos and 8 jiaos of driving chip
A diode is connected, input cathode is further connected with after a resistance R33 to be connect for 5 jiaos with driving chip, and input anode connects driving chip 7
Angle, input cathode are grounded after being further connected with capacitance C119, and input anode is grounded after being further connected with capacitance C82.
Therefore, the invention has the advantages that：1, energy-efficient, compatible strong；2, body in domestic industry same specification product
Product is minimum；3, cell phone application is debugged；4, remote monitoring and the storage of high in the clouds data.
Description of the drawings
Attached drawing 1 is elevator frequency converter way circuit hardware architecture diagram of the present invention.
Attached drawing 2 is bridge arm driving circuit topological diagram on IGBT in the present invention.
Attached drawing 3 is lower bridge arm driving and brake driving circuit topological diagram in the present invention.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：
First, the particular hardware structure of the present invention is introduced.
As shown in Figure 1, the present invention includes I O board and the driving plate being connect simultaneously with I O board, capacitor board, onboard PG cards
And LCD display panel.
Wherein, driving plate includes MCU chip group, and connect simultaneously with MCU chip Enthernet network modules,
CAN bus module, USB module, Switching Power Supply, detection circuit module, electrifying startup module, analog signal detection module, PIM moulds
Block, main relay and IGBT drive module.
The invention also includes the RSL modules being connect with MCU chip, RS485 network modules, RS422 network modules and
DB9 modules；The MCU chip group include MCU chip and the signal reset unit being connect with MCU chip, crystal oscillator unit,
EEPROM storage chips, real time clock unit, encoded signal processing unit and fan control unit；Enthernet network moulds
Block includes w5500 chips, OCU SPI communications chip and external RJ45 network interfaces；The main relay is 1 or 3 road band-type brakes
Relay.
Switching Power Supply includes upper bridge driving circuit, lower bridge driving circuit, relay and fan circuit, mosfet driving electricity
Road, transformer export feedback circuit and all the way 5v output ends；The detection circuit module include PIM temperature sensing circuits,
Busbar voltage detection circuit, bus current detection circuit, starting relay state detection circuit, braking performance test circuit, U/V/W
Current detection circuit and short-circuit detecting circuit；Electrifying startup module include start-up resistor and connect with start-up resistor after
Electric appliance；The PIM module includes rectified three-phase circuit, three-phase inverting circuit and braking circuit；The IGBT drive module
Including upper half-bridge drive circuit, lower half-bridge drive circuit and braking IGBT drive circuit.
As shown in Fig. 2, upper half-bridge drive circuit includes the optocoupler of model ACPL-W341 and by peripheral electricity
The voltage stabilizing sub-circuit that road is connect with optocoupler, the voltage stabilizing sub-circuit include the NPN transistor of two model pbss304nx, point
A resistance RB1 is connected after the base stage docking for not being transistor QB1 and transistor QB3, the transistor QB1 and transistor QB3
It connect with optocoupler, is connect with optocoupler after being connect with resistance RB1 after the emitter connecting resistance RA1 of transistor QB1 afterwards；On resistance RA1
One diode DA1 of parallel connection；The collector of transistor QB1 is connect with optocoupler, and the emitter of transistor QB1 is further connected with resistance
RAB1；After the collector connecting resistance RB2 of transistor QB1 it is in parallel with resistance RAB1 after export；The periphery single channel includes polarity electricity
Hold E13, two concatenated capacitance C22 and capacitance C26, the resistance R23 being sequentially connected in series and zener diode ZD5；The polarity electricity
Hold E13, capacitance C26 and zener diode ZD5 parallel connections and is followed by optocoupler, capacitance C22 and resistance R23 and transistor QB1 collectors company
It connects and is followed by optocoupler；Export the voltage stabilizing of high level and low level both ends bridging resistance R24, capacitance C24 and two differential concatenations
Diode ZD3 and zener diode ZD6.
As shown in figure 3, lower half-bridge drive circuit and braking IGBT drive circuit simultaneously with a model acpl-
The driving chip of 332j connects, and driving chip input terminal connects an input peripheral circuit；The braking IGBT drive circuit packet
Include the zener diode ZD22 and capacitance C17 in parallel successively for being connected across 14 jiaos and 16 jiaos of driving chip, the capacitance being sequentially connected in series
C16 and capacitance C20 is connected across 11 jiaos and 16 jiaos of driving chip, the zener diode ZD26 and zener diode ZD1 being sequentially connected in series
Bridge 9 jiaos and 16 jiaos of driving chip；After the connecting node of resistance R16 mono- termination capacitor C16 and capacitance C20 with driving chip 13
Angle connects, and the other end is connect for 16 jiaos with driving chip；After the connecting node of resistance R11 mono- termination capacitor C16 and capacitance C20, separately
One end is connect for 16 jiaos with driving chip.
Lower half-bridge drive circuit includes the NPN transistor of two model pbss304nx, is transistor QB2 and crystalline substance respectively
One resistance RB3 of connection is followed by 11 jiaos of driving chip after the base stage docking of body pipe QB4, the transistor QB2 and transistor QB4,
After the emitter connecting resistance RA2 of transistor QB2 with driving chip 11 jiaos connect；One diode DA2 of parallel connection on resistance RA2；It is brilliant
The collector of body pipe QB2 meets 24VN, and the emitter of transistor QB2 is further connected with after resistance RAB2 and resistance RB4 and transistor QB4
Collector connection；The connecting node of resistance RAB2 and resistance RB4 are output, and output low and high level end bridges parallel connection successively
The zener diode ZD2 and zener diode ZD4 of capacitance C25, resistance R30 and differential concatenation.Inputting peripheral circuit includes
The capacitance C23 and resistance R31,6 jiaos of driving chip in parallel successively for being connected across 5 jiaos and 7 jiaos of driving chip is connected with 7 jiaos, is driven
5 jiaos of chip is connected with 8 jiaos, and a diode is connected between 7 jiaos and 8 jiaos of driving chip, and input cathode is further connected with a resistance
After R33 with driving chip 5 jiaos connect, input anode connects 7 jiaos of driving chip, and input cathode is grounded after being further connected with capacitance C119,
Input anode is grounded after being further connected with capacitance C82.
Based on the inventive technique scheme, we develop a energy-efficient, compatible strong, and are no lack of the electricity of innovative point
Terraced special converter (being exemplified below part innovative point and key technology).
Key technology 1：The upper bridge arm drivings of IGBT.
Circuit explanation：
1, ACPL-W341 is exported with 3A peak inrush currents, and insulation voltage reaches 1140V, and 0.2us maximum conductances are delayed,
Has the function of under-voltage protection simultaneously.The optocoupler applies in general to IGBT/MOSFET drivings, alternating current generator brush DC drives,
Industrial frequency transformer and Switching Power Supply etc..
2, upper bridge arm and lower bridge arm use interlocking connection type, are better protected from upper and lower bridge arm and lead directly to situation；
3, Switching Power Supply outputting drive voltage is 24V, is acted on by zener diode, the driving IGBT gate pole electricity of output
Press high level：15.8V；Low level：8.2V；
4, when optocoupler input 10mA, forward conduction voltage is up to 1.95V；Because input voltage is 5V, therefore two be connected
Pole pipe electric current is I=(5V-1.95V)/240 Ω=12.7mA；In the range (7~16mA) of recommendation；
5, IGBT drives resistance to be chosen for 10 Ω, because driving optocoupler maximum current is I=(15.8V-1.15V)/10 Ω
The 50% of ≈ 1.5A, about W341 nominal 3A.
Key technology 2：Lower bridge arm drives to be driven with brake.
Circuit function：Lower bridge arm and brake are driven, and has overcurrent protection function concurrently；
Circuit explanation：
1, this circuit is novel circuit.
2, the optocoupler have IGBT overcurrent protection functions, when 14 feet (DESAT) voltage be higher than 7V, and drive input letter
Number it is effective, then Fault exports low level, while output signal is closed in the form of Sofe Switch.Fault signals are used and are opened
The form of open collector carries out logical AND operation convenient for multichannel 333J.
3, the closing of lower bridge arm driving and turning-on voltage are respectively -7.5V, 16V.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention
The technical staff in field can make various modifications or additions to the described embodiments or by a similar method
It substitutes, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of integrated elevator variable frequency device, which is characterized in that the driving plate that is connect including I O board and simultaneously with I O board, electricity
Hold plate, onboard PG cards and LCD display panel.
2. a kind of integrated elevator variable frequency device according to claim 1, which is characterized in that the driving plate includes MCU core
Piece group, and connect simultaneously with MCU chip Enthernet network modules, CAN bus module, USB module, Switching Power Supply, inspection
Slowdown monitoring circuit module, electrifying startup module, analog signal detection module, PIM module, main relay and IGBT drive module.
3. a kind of integrated elevator variable frequency device according to claim 1, which is characterized in that further include being connect with MCU chip
RSL modules, RS485 network modules, RS422 network modules and DB9 modules；The MCU chip group include MCU chip with
And connect with MCU chip signal reset unit, crystal oscillator unit, EEPROM storage chips, real time clock unit, at encoded signal
Manage unit and fan control unit.
4. a kind of integrated elevator variable frequency device according to claim 1, which is characterized in that the Enthernet networks mould
Block includes w5500 chips, OCU SPI communications chip and external RJ45 network interfaces；The main relay is 1 or 3 road band-type brakes
Relay.
5. a kind of integrated elevator variable frequency device according to claim 1, which is characterized in that the Switching Power Supply includes upper bridge
Driving circuit, lower bridge driving circuit, relay and fan circuit, mosfet driving circuits, transformer output feedback circuit and
5v output ends all the way；The detection circuit module includes PIM temperature sensing circuits, busbar voltage detection circuit, bus current inspection
Slowdown monitoring circuit, starting relay state detection circuit, braking performance test circuit, U/V/W current detection circuits and short-circuit detecting circuit.
6. a kind of integrated elevator variable frequency device according to claim 1, which is characterized in that the electrifying startup module includes
Start-up resistor and the relay being connect with start-up resistor；The PIM module include rectified three-phase circuit, three-phase inverting circuit,
And braking circuit；The IGBT drive module includes that upper half-bridge drive circuit, lower half-bridge drive circuit and braking IGBT drive
Dynamic circuit.
7. a kind of integrated elevator variable frequency device according to claim 1, which is characterized in that the upper half-bridge drive circuit packet
The voltage stabilizing sub-circuit for including the optocoupler of model ACPL-W341 and being connect with optocoupler by peripheral circuit, voltage stabilizing
Circuit includes the NPN transistor of two model pbss304nx, is transistor QB1 and transistor QB3, the transistor respectively
It is connect with optocoupler after one resistance RB1 of connection after the docking of the base stage of QB1 and transistor QB3, the emitter connecting resistance of transistor QB1
It is connect with optocoupler after being connect with resistance RB1 after RA1；One diode DA1 of parallel connection on resistance RA1；The collector of transistor QB1 with
Optocoupler connects, and the emitter of transistor QB1 is further connected with resistance RAB1；After the collector connecting resistance RB2 of transistor QB1 with resistance
It is exported after RAB1 parallel connections；The periphery single channel includes polar capacitor E13, two concatenated capacitance C22 and capacitance C26, goes here and there successively
The resistance R23 and zener diode ZD5 of connection；The polar capacitor E13, capacitance C26 and zener diode ZD5 parallel connections are followed by light
Coupling, capacitance C22 and resistance R23 connect with transistor QB1 collectors and are followed by optocoupler；Export high level and low level both ends bridging electricity
Hinder the zener diode ZD3 and zener diode ZD6 of R24, capacitance C24 and two differential concatenations.
8. a kind of integrated elevator variable frequency device according to claim 1, which is characterized in that the lower half-bridge drive circuit with
And braking IGBT drive circuit is connect with the driving chip of a model acpl-332j simultaneously, the connection of driving chip input terminal
One input peripheral circuit；The braking IGBT drive circuit includes being connected across the parallel connection successively of 14 jiaos and 16 jiaos of driving chip
Zener diode ZD22 and capacitance C17, the capacitance C16 and capacitance C20 being sequentially connected in series are connected across 11 jiaos and 16 jiaos of driving chip, according to
Secondary concatenated zener diode ZD26 and zener diode ZD1 bridge 9 jiaos and 16 jiaos of driving chip；Mono- termination capacitors of resistance R16
After the connecting node of C16 and capacitance C20 with driving chip 13 jiaos connect, the other end is connect for 16 jiaos with driving chip；Resistance R11 mono-
After the connecting node of termination capacitor C16 and capacitance C20, the other end is connect for 16 jiaos with driving chip.
9. a kind of integrated elevator variable frequency device according to claim 8, which is characterized in that lower half-bridge drive circuit includes two
The NPN transistor of a model pbss304nx is transistor QB2 and transistor QB4, the transistor QB2 and transistor respectively
One resistance RB3 of connection is followed by 11 jiaos of driving chip after the base stage docking of QB4, after the emitter connecting resistance RA2 of transistor QB2 with
11 jiaos of connections of driving chip；One diode DA2 of parallel connection on resistance RA2；The collector of transistor QB2 meets 24VN, transistor QB2
Emitter be further connected with resistance RAB2 and resistance RB4 after connect with the collector of transistor QB4；Resistance RAB2's and resistance RB4
Connecting node is output, and output low and high level end bridges the voltage stabilizing of capacitance C25, resistance R30 and differential concatenation in parallel successively
Diode ZD2 and zener diode ZD4.
10. a kind of integrated elevator variable frequency device according to claim 8, which is characterized in that the input peripheral circuit packet
The capacitance C23 and resistance R31,6 jiaos of driving chip for including the parallel connection successively for being connected across 5 jiaos and 7 jiaos of driving chip are connected with 7 jiaos, are driven
Dynamic 5 jiaos of chip is connected with 8 jiaos, and a diode is connected between 7 jiaos and 8 jiaos of driving chip, and input cathode is further connected with a resistance
After R33 with driving chip 5 jiaos connect, input anode connects 7 jiaos of driving chip, and input cathode is grounded after being further connected with capacitance C119, defeated
Enter after anode is further connected with capacitance C82 and is grounded.
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| CN201810392884.8A CN108539962A (en) | 2018-04-27 | 2018-04-27 | A kind of integrated elevator variable frequency device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586648A (en) * | 2018-12-21 | 2019-04-05 | 上海昶嘉工业设备有限公司 | A kind of intelligent electric machine |
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Inventor after: Shi Xiaodong Inventor after: Bao Jian Inventor after: Fu Minjian Inventor before: Shi Xiaodong Inventor before: Bao Jian Inventor before: Fu Mingjian |