CN202231603U - Frequency converter - Google Patents
Frequency converter Download PDFInfo
- Publication number
- CN202231603U CN202231603U CN2011203819416U CN201120381941U CN202231603U CN 202231603 U CN202231603 U CN 202231603U CN 2011203819416 U CN2011203819416 U CN 2011203819416U CN 201120381941 U CN201120381941 U CN 201120381941U CN 202231603 U CN202231603 U CN 202231603U
- Authority
- CN
- China
- Prior art keywords
- frequency converter
- unit
- transducer body
- reactor
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Inverter Devices (AREA)
Abstract
The present utility model discloses a frequency converter which comprises a power device, a frequency converter body and a power supply. A frequency converter body is connected between the power device and the power supply, an AC reactor for outputting is connected between the power device and the frequency converter body, and an AC reactor for inputting, an electromagnetic contactor and a switch are successively connected between the frequency converter body and the power supply. The frequency converter body comprises a main control panel, a data recording unit and a man-machine interface are connected with the main control panel, the man-machine interface is connected with the data recording unit, and a data storage unit is arranged inside the data recording unit. Through the above method, the frequency converter is provided with a data recording function, when the frequency converter is out of order, the operating state before faults are appeared can be analyzed to find reasons of the faults, thus the frequency converter is more convenient in use, the system is stable in operation, the working efficiency is high, and a plurality of advanced functions can be realized.
Description
Technical field
The utility model relates to the frequency converter field, particularly relates to a kind of frequency converter.
Background technology
Along with developing rapidly of modern power electronics technology and Computer Control Technology, promoted the technological revolution of electric drive.AC speed regulating replaces DC speed regulation, and computer numerical control (CNC) replaces simulation control has become development trend.Frequency conversion and speed regulation of AC motor is current saves energy, improves the technological process of production, improve the quality of products, and a kind of main means of improving running environment.Frequency control is with its high efficiency, High Power Factor, and excellent speed governing and open plurality of advantages such as braking ability and be known as the most rising mode of speed regulation both at home and abroad.
The frequency converter function of prior art is few, because control mode is single, cause the scope of application also to be limited to very much, but all now frequency converters all can not write down the historical data of operation.When frequency converter breaks down, can not analyze the preceding running status of frequency converter failure, brought a lot of inconvenience for the use of frequency converter.Also exist energy-saving effect poor, inefficiency moves shortcoming such as noise is big, can't satisfy multiple demand to greatest extent all the time.
The utility model content
The technical problem that the utility model mainly solves provides a kind of frequency converter; The band data recording function; Can, frequency converter can draw the reason that breaks down when breaking down through the running status before the analysis of failure; Improved operating efficiency, made that frequency converter can obtain using better more easily.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of frequency converter is provided; Comprise: power set, transducer body, power supply, be connected with transducer body between said power set and the said power supply, be connected with output between said power set and the said transducer body and use AC reactor; Be connected with input between said transducer body and the said power supply successively with AC reactor, electromagnetic contactor, switch; Be connected with an energy feedback unit with said power supply and transducer body respectively, said transducer body comprises a master board, is connected with data record unit, man-computer interface with said master board; Said man-computer interface is connected with said data record unit, is provided with data storage cell in the said data record unit.
In preferred embodiment of the utility model, said output is with being provided with the outlet side noise filter between AC reactor and the said power set, and said input is with being provided with the input side noise filter between AC reactor and the transducer body.
In preferred embodiment of the utility model, also be connected with direct current reactor, brake resistance or brake unit on the said transducer body.
In preferred embodiment of the utility model, also be connected with ancillary equipment with said master board, said ancillary equipment comprises this keyboard, control key dish far away, said control key dish far away and said keyboard are connected in parallel.
In preferred embodiment of the utility model, comprise basic function setup unit, operation control setup unit, power set parameter setting unit, frequency setting unit, auxiliary operation function setup unit, input/output terminal setup unit, enhancement function setup unit, pid control function setup unit, simple and easy PLC and multistage speed control system function setting unit, protection parameter setting unit, serial communication function setting unit in the said master board.
In preferred embodiment of the utility model, said data storage cell is hard disk, disk, flash card.
In preferred embodiment of the utility model, be connected through data transmission cable between said master board and the data record unit.
The beneficial effect of the utility model is: the frequency converter band data recording function of the utility model can draw the reason that breaks down through the running status before the analysis of failure, thereby make the use of frequency converter convenient when frequency converter breaks down; System operates steadily, and high efficiency has multiple Premium Features, is applicable to multiple different occasion, satisfies multiple demand to greatest extent.
Description of drawings
Fig. 1 is the structural representation of this practical frequency converter one preferred embodiment;
The mark of each parts is following in the accompanying drawing: 1, power set, 2, power supply, 3, transducer body, 4, switch; 5, electromagnetic contactor, 6, the outlet side noise filter, 7, the input side noise filter, 8, output uses AC reactor; 9, AC reactor is used in input, and 10, direct current reactor, 11, brake resistance or brake unit; 12, master board, 13, data record unit, 14, man-computer interface.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the utility model is set forth in detail, thereby the protection range of the utility model is made more explicit defining so that advantage of the utility model and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1, the utility model embodiment comprises:
A kind of frequency converter; Comprise: power set 1, transducer body 3, power supply 2; Be connected with transducer body 3 between said power set 1 and the said power supply 2; Be connected with output between said power set 1 and the said transducer body 3 with AC reactor 8, be connected with input between said transducer body 3 and the said power supply 2 successively, be connected with an energy feedback unit with said power supply 2 with transducer body 3 respectively with AC reactor 9, electromagnetic contactor 5, switch 4.
Said transducer body comprises a master board 12, is connected with data record unit 13, man-computer interface 14 with said master board 12, and said man-computer interface 14 is connected with said data record unit 13, is provided with data storage cell in the said data record unit 13.Said data storage cell is hard disk, disk, flash card.
Be connected through data transmission cable between said master board 12 and the data record unit 13.Also be connected with ancillary equipment with said master board 12, said ancillary equipment comprises this keyboard, control key dish far away, and said control key dish far away and said keyboard are connected in parallel.Between said keyboard and the said control key dish far away free translation function is arranged, easy to operate, flexible, the interactive switching controls of two keyboards is applicable to multiple different occasion.
During the frequency converter operation, the data that data record unit 13 is gathered in the frequency converter through master board 12 also can directly be gathered the data in the frequency converter simultaneously.Data record unit 13 in data storage cell, and shows the storage of gathering, is transferred to ancillary equipment simultaneously and further handles through man-machine interface.
Can when frequency converter breaks down, can draw the reason that breaks down, thereby make the use of frequency converter convenient through the running status before the analysis of failure.
Energy feedback unit can be with the motor electricity feedback grid that is in the regenerative braking state.Energy feedback unit adopts IGBT to do the rectification feedback, compares traditional three-phase inverse parallel bridge rectifier unit, and the harmonic distortion component of feedback grid is less than 4% of first-harmonic, and is very little to the pollution of electrical network.
Switch 4 can be circuit breaker or leakage switch.Use the power supply 2 switches control of circuit breaker or the leakage switch of frequency converter rated voltage and current class as frequency converter, and as the protection of frequency converter.The capacity of circuit breaker or leakage switch is 1.5～2 times of frequency converter rated current, and its time characteristic takes into full account the time response of the overtemperature protection (150% of output-current rating/minute) of frequency converter.
Electromagnetic contactor 5 is in order effectively to excise the input power supply 2 of frequency converter when the system failure, the break-make of electromagnetic contactor 5 control main circuit powers 2 can be installed, to guarantee safety at input side.
Output is when the distance between frequency converter and the motor surpasses 50 meters with AC reactor 8; Because long cable parasitic capacitance effect over the ground causes leakage current excessive; The frequent easily generation overcurrent protection of frequency converter damages for fear of electrical machine insulation simultaneously, must add the out put reactor compensation.
In order to prevent electric network peak pulse when input, big electric current flows into input power supply 2 loops and damages the rectifying part components and parts, needs at input side incoming transport reactor with AC reactor 9 in input, and the while also can be improved the power factor of input side.
Said output is with being provided with outlet side noise filter 6 between AC reactor 8 and the said power set 1, and said input is with being provided with input side noise filter 7 between AC reactor 9 and the transducer body 3.
Outlet side noise filter 6 can increase that the output noise filter can reduce because the radio noise that cable causes between frequency converter and the motor and the leakage current of lead.
Input side noise filter 7 can be when using frequency converter, and other electronic equipment around might disturbing through power line uses this filter can reduce the interference to surrounding devices.
Also be connected with direct current reactor 10, brake resistance or brake unit 11 on the said transducer body 3.Direct current reactor 10 can improve power factor, can avoid because of inserting high-power transformer the excessive rectifier bridge that causes of frequency converter input current being damaged, and the harmonic wave that can avoid line voltage sudden change or phased load to cause causes damage to rectification circuit.
Also comprise basic function setup unit, operation control setup unit, power set parameter setting unit, frequency setting unit, auxiliary operation function setup unit, input/output terminal setup unit, enhancement function setup unit, pid control function setup unit, simple and easy PLC and multistage speed control system function setting unit, protection parameter setting unit, serial communication function setting unit in the said master board 12.
Said basic function setup unit comprises on control command path setting unit, the running frequency/lower limit set unit, acceleration and deceleration time setting unit, V/F curve setting unit, torque magnification setup unit, carrier frequency setup unit, power set Parameter Self-learning unit, functional parameter recover setup unit.
Set high carrier frequency in the carrier frequency setup unit, its advantage is: current waveform is more satisfactory, current harmonics is few, and motor noise is little; It is then opposite with above-mentioned situation to set low carrier frequency, and low excessively carrier frequency will cause that low-frequency operation is unstable, torque reduction even oscillatory occurences.
Said operation control setup unit comprises startup operational mode setup unit, acceleration and deceleration mode selected cell, shutting-down Mode Selection unit, terminal Function detection selected cell; Said startup operational mode unit comprises that direct start-up mode, first DC injection braking are restarted pattern, rotating speed is followed the trail of and restarted pattern, and the shutting-down Mode Selection unit comprises ramp to stop pattern, free parking pattern.
Said auxiliary operation function setup unit comprises that the reverse selected cell of operation, pulse width modulation (PWM) type selecting unit, carrier frequency adjustment selected cell, Chip Microcomputer A VR function selecting unit, V/F slip compensation limit unit, energy-saving run selected cell.
Said enhancement function setup unit comprises and automatically resets acceleration and deceleration time setting unit, wobble frequency parameter setting, fault setup unit, preset frequency converter unit running time, output frequency detected value setup unit, output action remove that lagged value is set, frequency arrives subduction amplitude setup unit, stand-by motor function setting unit, brake valve threshold voltage setup unit, cooling heat dissipation fan operation unit, suppresses oscillating unit, pulse width modulation (PWM) mode selecting unit.
The pulse width modulation (PWM) mode selecting unit comprises PWM pattern 1, and this pattern is normal PWM pattern, and motor noise is less during low frequency, and motor noise is bigger during high frequency; PWM pattern 2, motor is less at this mode operation noise, but temperature rise is higher, as select this function frequency converter to need derate to use; The PWM mode 3, motor is bigger at this mode operation motor noise, but motor oscillates is had good inhibitory effect.
Said simple and easy PLC and multistage speed control system function setting unit comprise simple and easy PLC operational mode setup unit, simple and easy PLC memory selected cell, multistage speed and each section fast running time of setup unit, simple and easy PLC acceleration and deceleration selection of time setup unit, PLC restart mode selected cell.
Said protection parameter setting unit comprises I/O phase-lacking protective unit, power set overload protection setup unit, instant power-down protection setup unit, overvoltage stall protection unit, automatic current limiting setup unit.
The frequency converter band data recording function of the utility model can draw the reason that breaks down through the running status before the analysis of failure, thereby make the use of frequency converter convenient when frequency converter breaks down; System operates steadily, and high efficiency has multiple Premium Features, is applicable to multiple different occasion, satisfies multiple demand to greatest extent.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (7)
1. frequency converter; It is characterized in that; Comprise: power set, transducer body, power supply, be connected with transducer body between said power set and the said power supply, be connected with output between said power set and the said transducer body and use AC reactor; Be connected with input between said transducer body and the said power supply successively with AC reactor, electromagnetic contactor, switch; Be connected with an energy feedback unit with said power supply and transducer body respectively, said transducer body comprises a master board, is connected with data record unit, man-computer interface with said master board; Said man-computer interface is connected with said data record unit, is provided with data storage cell in the said data record unit.
2. frequency converter according to claim 1 is characterized in that, said output is with being provided with the outlet side noise filter between AC reactor and the said power set, and said input is with being provided with the input side noise filter between AC reactor and the transducer body.
3. frequency converter according to claim 1 is characterized in that, also is connected with direct current reactor, brake resistance or brake unit on the said transducer body.
4. frequency converter according to claim 1 is characterized in that, also is connected with ancillary equipment with said master board, and said ancillary equipment comprises this keyboard, control key dish far away, and said control key dish far away and said keyboard are connected in parallel.
5. frequency converter according to claim 1; It is characterized in that, comprise basic function setup unit, operation control setup unit, power set parameter setting unit, frequency setting unit, auxiliary operation function setup unit, input/output terminal setup unit, enhancement function setup unit, pid control function setup unit, simple and easy PLC and multistage speed control system function setting unit, protection parameter setting unit, serial communication function setting unit in the said master board.
6. frequency converter according to claim 1 is characterized in that, said data storage cell is hard disk, disk, flash card.
7. frequency converter according to claim 1 is characterized in that, is connected through data transmission cable between said master board and the data record unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203819416U CN202231603U (en) | 2011-10-10 | 2011-10-10 | Frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203819416U CN202231603U (en) | 2011-10-10 | 2011-10-10 | Frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231603U true CN202231603U (en) | 2012-05-23 |
Family
ID=46082175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203819416U Expired - Fee Related CN202231603U (en) | 2011-10-10 | 2011-10-10 | Frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231603U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513586A (en) * | 2012-06-29 | 2014-01-15 | 中国科学院大连化学物理研究所 | Frequency converter remote control method based on serial instruction sequence |
| CN111865176A (en) * | 2020-07-13 | 2020-10-30 | 广东萨米特陶瓷有限公司 | Method for coping with power supply flash |
-
2011
- 2011-10-10 CN CN2011203819416U patent/CN202231603U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513586A (en) * | 2012-06-29 | 2014-01-15 | 中国科学院大连化学物理研究所 | Frequency converter remote control method based on serial instruction sequence |
| CN111865176A (en) * | 2020-07-13 | 2020-10-30 | 广东萨米特陶瓷有限公司 | Method for coping with power supply flash |
| CN111865176B (en) * | 2020-07-13 | 2022-03-22 | 广东萨米特陶瓷有限公司 | Method for coping with power supply flash |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Manandhar et al. | Efficiency comparison of DC and AC microgrid | |
| CN202872648U (en) | Filter decoupling anti-interference electric power secondary system | |
| He et al. | Design and implementation of an energy feedback digital device used in elevator | |
| CN101944747A (en) | Low-voltage failure crossing method of brushless cascading double-fed wind power generator set | |
| CN104242738A (en) | Frequency conversion and energy saving control device and method for cluster well pumping units | |
| CN202353232U (en) | High-voltage cascaded inverter power unit grid-connection feedback device | |
| CN102496950B (en) | Power unit grid-connected and feedback device for high-voltage concatenated frequency converter | |
| CN110679072B (en) | Switching strategy for improving efficiency of power converter | |
| CN109494770A (en) | A kind of three-phase load unbalance intelligent regulating device and method | |
| CN207053259U (en) | Dc bus oil pumper micro-capacitance sensor intelligent group control device and system | |
| CN201226505Y (en) | High voltage blower/high voltage fan electricity-saving device | |
| CN203399031U (en) | Cluster well oil pumping unit frequency conversion energy-saving control apparatus | |
| CN202231603U (en) | Frequency converter | |
| CN201699603U (en) | High frequency power supply for monocrystalline silicon furnace | |
| CN209072089U (en) | A kind of paddle change system of wind turbines high voltage crossing controller | |
| CN105471241A (en) | Mechanical contactor based two-path-power-supply high-voltage frequency converter unit bypass apparatus | |
| CN202231618U (en) | Novel frequency converter | |
| CN202218158U (en) | Anti-jamming power supply for main control panel of AC driver | |
| CN2567865Y (en) | DC bus structure type high-tension high-low-high high-tension frequency control of motor speed device | |
| CN101615492A (en) | Three-winding transformer and variable-frequency speed-regulation power supply system | |
| CN201312282Y (en) | Speed changing system of static frequency converter | |
| CN211627761U (en) | High-speed permanent magnet synchronous motor loading device | |
| CN204847730U (en) | Colliery is synchronous device that directly drives of permanent magnetism for lifting machine | |
| CN210577817U (en) | Flame-proof and intrinsic safety type static var generator device | |
| CN203645586U (en) | Integration system of oil well heating and intelligent control of clustered-well oil pumping units |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20131010 |