CN202231664U - Non-inductance vector frequency converter - Google Patents
Non-inductance vector frequency converter Download PDFInfo
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- CN202231664U CN202231664U CN2011203547981U CN201120354798U CN202231664U CN 202231664 U CN202231664 U CN 202231664U CN 2011203547981 U CN2011203547981 U CN 2011203547981U CN 201120354798 U CN201120354798 U CN 201120354798U CN 202231664 U CN202231664 U CN 202231664U
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Abstract
The utility model discloses a non-inductance vector frequency converter, comprising a power device, a power supply and a frequency inverter main body, wherein the frequency inverter main body comprises a main circuit board, a main loop terminal set on the main circuit board and a control loop terminal set, the main loop terminal set comprises an input power supply connection end and a power device connection end, the frequency inverter main body is connected with the power device by the power deice connection end, the frequency inverter main body is connected with the power supply by the input power supply connection end, an electromagnetic contactor and a non-fuse breaker are arranged between the frequency inverter main body and the power supply in turn; the control lop terminal set comprises a plurality of sets of signal output / input ends. By the above way, the non-inductance vector frequency converter has the following features: small output current harmonics, quite and smooth operation, high efficiency, flexible and convenient control way, capability of being applicable to various application occasions, complete protection function, timely protection of the system when failure occurs, simple and compact structure and beautiful appearance.
Description
Technical field
The utility model relates to a kind of converter plant, particularly relates to a kind of sensorless vector 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 singleness of prior art causes the scope of application also to be limited to very much, and noise is big; Fluctuation of service; Efficient is poor, and the safeguard measure imperfection to function is short-circuited, when overcurrent, overload, overvoltage fault; System can not protect immediately, 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 sensorless vector frequency converter; Can the low speed nominal torque export, protection and warning function are improved in super-silent stable operation; Multiple parameter in-service monitoring and online adjustment can be satisfied multiple demand to greatest extent.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of sensorless vector frequency converter is provided; Comprise: power set, power supply, transducer body; Said transducer body comprises a main circuit board, and said main circuit board is provided with major loop terminal group, control loop terminal group
Said major loop terminal group comprises input power connector end, power set terminals; Said transducer body is connected with said power set through said power set terminals; Said transducer body is connected with said power supply through said input power connector end, is provided with electromagnetic contactor, non-fuse breaker successively between said transducer body and the said power supply;
Said control loop terminal group comprises many group signal output/inputs, is connected with basic parameter crowd setting module, protection, braking and speed trace parameters crowd setting module, I/O functional parameter crowd setting module, power set population of parameters setting module, the fast population of parameters setting module of multistage, communications parameter crowd setting module, special parameter crowd setting module with said signal I/O end on the said transducer body, control mode is provided with population of parameters setting module, PID functional parameter crowd setting module.
In preferred embodiment of the utility model, be provided with the outlet side noise filter between said power set and the said transducer body, be provided with input side noise filter, AC reactor successively between said transducer body and the said electromagnetic contactor.
In preferred embodiment of the utility model, said major loop terminal group also comprises the brake unit link.
In preferred embodiment of the utility model, said transducer body is provided with this keyboard of LED, LED control key dish far away, and said LED control key dish far away and said this keyboard of LED are connected in parallel.
In preferred embodiment of the utility model, said basic parameter crowd setting module comprises that basic frequency input source sets submodule, CRANK PULSES source and set submodule, power set parking mode and set submodule, voltage and set submodule, frequency setting submodule, acceleration time set submodule, S curve acceleration and set submodule, regulate acceleration and deceleration automatically and set submodule, pulse width modulation (PWM) carrier frequency chooser module.
In preferred embodiment of the utility model, said protection, braking and speed trace parameters crowd setting module comprise stall prevent function setting submodule, electronics thermal overload relay function setting submodule, over torque detect set submodule, DC injection braking function setting submodule, instantaneous power-off rerun select to set submodule, the speed tracking function is set submodule.
In preferred embodiment of the utility model, said I/O functional parameter crowd setting module comprises that multi-function input terminal function selecting submodule, analog output signal chooser module, simulation output gain set submodule, multi-functional lead-out terminal function setting submodule, optional frequency and arrive and set submodule, outside terminal and set submodule sweep time.
In preferred embodiment of the utility model, but said multistage speed population of parameters setting module comprises multistage speed frequency setting submodule, forbids that counter-rotating sets submodule, simple and easy PLC program run function selecting submodule, multistage and set submodule running time.
In preferred embodiment of the utility model, said special parameter crowd setting module comprises that automatic power save running submodule, tally function setting submodule, automatic voltage regulation output regulatory function are set submodule, the time accumulating function is set submodule, dc bus braking benchmark setting submodule.
In preferred embodiment of the utility model; Said control mode is provided with the population of parameters setting module and comprises control model chooser module, vector control slip compensating filter setting submodule, zero-speed controlled function chooser module, and said control model chooser module comprises V/F control model, vector control pattern.
The beneficial effect of the utility model is: little, quiet, the even running of sensorless vector frequency converter output current harmonics composition of the utility model, and efficient is high; Control mode flexibly, convenient, be applicable to various application occasions, defencive function is perfect, and is simple in structure, compact even can protection during system during fault, good looking appearance.
Description of drawings
Fig. 1 is the structural representation of the utility model sensorless vector 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, electromagnetic contactor, 5, non-fuse breaker, 6, the outlet side noise filter, 7, AC reactor, 8, the input side noise filter, 9, brake unit.
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 sensorless vector frequency converter comprises: power set 1, power supply 2, transducer body 3, and said transducer body 3 comprises a main circuit board, said main circuit board is provided with major loop terminal group, control loop terminal group,
Said major loop terminal group comprises input power connector end, power set terminals; Said transducer body 3 is connected with said power set 1 through said power set terminals; Said transducer body 3 is connected with said power supply 2 through said input power connector end, is provided with electromagnetic contactor 4, non-fuse breaker 5 between said transducer body 3 and the said power supply 2 successively.
The power set 1 of the utility model can be motor; Said electromagnetic contactor 4 be used for when frequency converter failure cutting off main power source 2 and prevent power down and fault after restart, non-fuse breaker 5 is used for the fault current of fast shut-off frequency converter and prevents frequency converter and line fault causes power supply 2 faults.
Be provided with outlet side noise filter 6 between said power set 1 and the said transducer body 3, be provided with input side noise filter 8, AC reactor 7 between said transducer body 3 and the said electromagnetic contactor 4 successively.
Outlet side noise filter 6 and input side noise filter 8 are used to suppress the conduction of the electromagnetic interference noise that frequency converter produces, and also can suppress the interference to this machine of extraneous radio interference and temporary impact, surge.AC reactor 7 can suppress the high order harmonic component of frequency converter input current, obviously improves the power factor of frequency converter.AC reactor 7 is used in suggestion under scenario: power supply 2 capacity of the used part of frequency converter are more than 10: 1 with the ratio of the capacity of frequency converter; Be connected to the controllable silicon load on the same power supply 2 or have the power factor compensation device that switch is controlled; The Voltage unbalance degree of three phase mains is big (>=3%).
Said major loop terminal group also comprises the brake unit link.The sensorless vector frequency converter of the utility model does not have the built-in braking function of bringing back to life, and selects for use when braking moment can not meet the demands like need, is applicable to big inertia load and frequent braking or the occasion of stopping fast, needs through the external brake unit 9 of brake unit link.
The sensorless vector frequency converter of the utility model also is provided with earth leakage protective device, because all there are electrostatic capacitance over the ground in frequency converter inside, motor internal and input and output lead-in wire, the sensorless vector frequency converter because of the utility model is the low noise type again; Used carrier wave is higher, so the Ground leakage current of frequency converter is bigger, sometimes even can cause the protective circuit misoperation; When running into the problems referred to above; Remove and suitably reduce carrier frequency, shorten outside the lead-in wire, also earth leakage protective device should be installed.When installing and using earth leakage protective device, should notice that earth leakage protective device should be located at the input side of frequency converter, as for comparatively suitable after the non-fuse breaker 5; When the operating current of earth leakage protective device should not use frequency converter greater than this circuit under power frequency supply 10 times of leakage current.
Said transducer body 3 is provided with this keyboard of LED, LED control key dish far away, and said LED control key dish far away and said this keyboard of LED are connected in parallel.Between said this keyboard of LED and the said LED 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.
Said control loop terminal group comprises many group signal output/inputs, is connected with basic parameter crowd setting module, protection, braking and speed trace parameters crowd setting module, I/O functional parameter crowd setting module, power set population of parameters setting module, the fast population of parameters setting module of multistage, communications parameter crowd setting module, special parameter crowd setting module with said signal I/O end on the said transducer body 3, control mode is provided with population of parameters setting module, PID functional parameter crowd setting module.
Said basic parameter crowd setting module comprises that basic frequency input source sets submodule, CRANK PULSES source and set submodule, power set parking mode and set submodule, voltage and set submodule, frequency setting submodule, acceleration time set submodule, S curve acceleration and set submodule, regulate acceleration and deceleration automatically and set submodule, pulse width modulation (PWM) carrier frequency chooser module.
Basic frequency input source is set the source of frequency converter basic frequency in the submodule and can be set through following approach: the basic frequency input is controlled by numeric keypad; The basic frequency input is controlled by analog signal; The basic frequency input is by serial communication controlling; The basic frequency input is controlled by the numeric keypad potentiometer.
The power set parking mode is set submodule and is comprised the following mode that stops: stopping, stopping with free drive manner with the retarding braking mode.
Automatically regulate acceleration and deceleration setting submodule and comprise that following several kinds are set selection: straight line quickens, slows down; Automatically quicken, straight line slows down; Straight line quickens, and slows down automatically; Automatically quicken, slow down.
Automatically regulate acceleration and deceleration and can effectively alleviate the mechanical shock that load starts, stops; Can detect simultaneously the level of torque of load automatically, automatically with the fastest accelerating time, the most level and smooth starting current accelerated service to the frequency that sets.When slowing down, more can judge the rise energy of load automatically, automatic stably motor is stopped the fastest deceleration time under level and smooth prerequisite.Use adjusting acceleration and deceleration automatically can avoid complicated tracing program(me).Not stall of accelerated service, deceleration stop to exempt from brake unit 9; Can effectively improve running efficiency and save the energy.
S curve acceleration is set submodule and is used for setting frequency converter is made no impact when startup begins to quicken slow startup.Start S curve acceleration, the acceleration and deceleration curves of intercropping different rates when frequency converter can be according to former acceleration and deceleration.
The carrier frequency of PWM output has absolute influence for the electromagnetic noise of motor in the pulse width modulation (PWM) carrier frequency chooser module.The power consumption of frequency converter and also influential to the interference of environment; So if the noise of surrounding environment has been bigger than motor noise, turn down the benefit that frequency converter there be heat radiation with carrier frequency this moment; When if carrier frequency is high, though quietly turned round, the distribution of relative integral body, the control of interference all must be considered.
Said protection, braking and speed trace parameters crowd setting module comprise stall prevent function setting submodule, electronics thermal overload relay function setting submodule, over torque detect set submodule, DC injection braking function setting submodule, instantaneous power-off rerun select to set submodule, the speed tracking function is set submodule.
Stall prevents that the function setting submodule from comprising that overvoltage stall prevents that overcurrent stall prevents that overcurrent stall prevents the benchmark setting in benchmark setting, the running in function setting, the acceleration.
When the frequency converter operation was slowed down, because the influence of motor load inertia, it is inner that motor can produce rise energy to frequency converter, makes dc voltage be elevated to maximum permissible value.Therefore when starting overvoltage stall and prevent function, when frequency converter detecting dc voltage was too high, frequency converter can stop deceleration (output frequency remains unchanged), when dc voltage is lower than set point, and the frequency converter deceleration of just can reruning.
When the frequency converter operation is quickened; Because acceleration is too fast or motor load is excessive; The frequency converter output current can rise rapidly, and overcurrent stall prevents the set point of current reference in surpass quickening, and frequency converter can stop to quicken (it is fixing that output frequency keeps); When electric current was lower than this set point, frequency converter just continued to quicken.
If in the frequency converter running, output current surpasses when overcurrent stall prevents the set point of current reference in the running, and frequency converter can reduce output frequency, avoids motor stall.If output current is lower than set point, then frequency converter just accelerates to setpoint frequency again.
Electronics thermal overload relay function setting submodule is that the user can set the electronics thermal overload relay for the motor overheating phenomenon takes place when the slow-speed of revolution is turned round the prevention self-cooled machine, the permissible power output of restriction frequency converter.
Over torque detects the setting submodule and comprises that the over torque detection function is selected, over torque detects the benchmark setting, the over torque detection time is set, and the over torque detection function is selected to comprise following content: over torque does not detect; Over torque detecting in the constant speed drive, over torque detects the continued running; The over torque detecting shuts down after over torque detects in the constant speed drive; Over torque detecting in the acceleration, over torque detects the continued running; The over torque detecting shuts down after over torque detects in the acceleration.
Said I/O functional parameter crowd setting module comprises that multi-function input terminal function selecting submodule, analog output signal chooser module, simulation output gain set submodule, multi-functional lead-out terminal function setting submodule, optional frequency and arrive and set submodule, outside terminal and set submodule sweep time.
Multi-function input terminal function selecting submodule just comprises to be changeed/stops; Reverse/stop; Turn round/stop; Reverse/just change.
Said multistage speed population of parameters setting module comprises multistage speed frequency setting submodule, forbid that but counter-rotating sets submodule, simple and easy PLC program run function selecting submodule, multistage and set submodule running time.
Said special parameter crowd setting module comprises that automatic power save running submodule, tally function setting submodule, automatic voltage regulation output regulatory function are set submodule, the time accumulating function is set submodule, dc bus braking benchmark setting submodule.
The function of automatic power save running submodule is when economizing the unlatching of the energy function of motion, in acceleration and deceleration, turns round with full voltage; Can be supplied to load by the magnitude of voltage of the automatic calculating optimum of bearing power in the constant speed drive.This function is not suitable in the frequent or running of load change the load near fully loaded specified running.
Automatic voltage regulation output regulatory function is set the submodule setting content to be had: the automatic voltage regulation output function is opened, closes the automatic voltage regulation output function, closes the automatic voltage regulation output function when stopping, being closed the automatic voltage regulation output function when slowing down.
Motor specified nothing more than AC220V/200V, 60Hz/50Hz; The input voltage of frequency converter can be from AC180V-264V, 50Hz/60Hz; So if frequency converter is not when having the function of AVR automatic voltage regulation output; If input converter power supply 2 also is AC260V for the voltage that AC260V then outputs to motor; Motor is in the power supply that surpasses rated voltage 12%-20% 2 runnings; Cause temperature rise increase, the insulating capacity of motor to go to pot, torque output is unstable, the electrical machinery life that gets off for a long time will speed up to shorten and causes damage.
The automatic voltage regulation output of frequency converter can be stabilized in out-put supply 2 rated voltage of motor automatically when input power supply 2 surpasses the motor rated voltage.For example the V/F curve be set at AC210V/50Hz, this moment if input power supply 2 when AC200-264V, export to the voltage of motor can automatic stabilisation at AC210V/50Hz, will not exceed the voltage that sets.If, exporting the voltage of motor in the AC180-210V change, the power supply 2 of input can be proportional to input power supply 2.When motor when retarding braking stops, the function of automatic voltage regulation closed to close shortens the time of slowing down, add the excellent function of collocation automatic deceleration, the deceleration of motor is quicker.
Said control mode is provided with the population of parameters setting module and comprises control model chooser module, vector control slip compensating filter setting submodule, zero-speed controlled function chooser module, and said control model chooser module comprises V/F control model, vector control pattern.
The utility model is high-quality, the low noise that is applicable to various working, multi-functional sensorless vector frequency converter.The output current harmonics composition is little, steady, quiet operation, and efficient is high.Instantaneous output voltage is adjusted automatically, even there is bigger fluctuation in the input electrical network, output voltage also remains unchanged basically.Numeric keypad, simulation potentiometer, voltage source, current source etc., control mode flexibly, conveniently.Current limit, overvoltage stall, rotating speed are followed the trail of and function such as are smoothly restarted, and adapt to various application scenarios.The internal PID adjuster, closed-loop control system is simple in structure.Defencive function is perfect, and frequency converter is short-circuited, when overcurrent, overload, overvoltage fault, and system all can protect immediately.The complete series mold is produced, good looking appearance, compact conformation.
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 (10)
1. a sensorless vector frequency converter is characterized in that, comprising: power set, power supply, transducer body, and said transducer body comprises a main circuit board, said main circuit board is provided with major loop terminal group, control loop terminal group,
Said major loop terminal group comprises input power connector end, power set terminals; Said transducer body is connected with said power set through said power set terminals; Said transducer body is connected with said power supply through said input power connector end, is provided with electromagnetic contactor, non-fuse breaker successively between said transducer body and the said power supply;
Said control loop terminal group comprises many group signal output/inputs, is connected with basic parameter crowd setting module, protection, braking and speed trace parameters crowd setting module, I/O functional parameter crowd setting module, power set population of parameters setting module, the fast population of parameters setting module of multistage, communications parameter crowd setting module, special parameter crowd setting module with said signal I/O end on the said transducer body, control mode is provided with population of parameters setting module, PID functional parameter crowd setting module.
2. sensorless vector frequency converter according to claim 1; It is characterized in that; Be provided with the outlet side noise filter between said power set and the said transducer body, be provided with input side noise filter, AC reactor successively between said transducer body and the said electromagnetic contactor.
3. sensorless vector frequency converter according to claim 1 is characterized in that, said major loop terminal group also comprises the brake unit link.
4. sensorless vector frequency converter according to claim 1 is characterized in that, said transducer body is provided with this keyboard of LED, LED control key dish far away, and said LED control key dish far away and said this keyboard of LED are connected in parallel.
5. sensorless vector frequency converter according to claim 1; It is characterized in that said basic parameter crowd setting module comprises that basic frequency input source sets submodule, CRANK PULSES source and set submodule, power set parking mode and set submodule, voltage and set submodule, frequency setting submodule, acceleration time set submodule, S curve acceleration and set submodule, regulate acceleration and deceleration automatically and set submodule, pulse width modulation (PWM) carrier frequency chooser module.
6. sensorless vector frequency converter according to claim 1; It is characterized in that, said protection, braking and speed trace parameters crowd setting module comprise stall prevent function setting submodule, electronics thermal overload relay function setting submodule, over torque detect set submodule, DC injection braking function setting submodule, instantaneous power-off rerun select to set submodule, the speed tracking function is set submodule.
7. sensorless vector frequency converter according to claim 1; It is characterized in that said I/O functional parameter crowd setting module comprises that multi-function input terminal function selecting submodule, analog output signal chooser module, simulation output gain set submodule, multi-functional lead-out terminal function setting submodule, optional frequency and arrive and set submodule, outside terminal and set submodule sweep time.
8. sensorless vector frequency converter according to claim 1; It is characterized in that, but said multistage speed population of parameters setting module comprises multistage speed frequency setting submodule, forbids that counter-rotating sets submodule, simple and easy PLC program run function selecting submodule, multistage and set submodule running time.
9. sensorless vector frequency converter according to claim 1; It is characterized in that said special parameter crowd setting module comprises that automatic power save running submodule, tally function setting submodule, automatic voltage regulation output regulatory function are set submodule, the time accumulating function is set submodule, dc bus braking benchmark setting submodule.
10. sensorless vector frequency converter according to claim 1; It is characterized in that; Said control mode is provided with the population of parameters setting module and comprises control model chooser module, vector control slip compensating filter setting submodule, zero-speed controlled function chooser module, and said control model chooser module comprises V/F control model, vector control pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203547981U CN202231664U (en) | 2011-09-21 | 2011-09-21 | Non-inductance vector frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203547981U CN202231664U (en) | 2011-09-21 | 2011-09-21 | Non-inductance vector frequency converter |
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| Publication Number | Publication Date |
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| CN202231664U true CN202231664U (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203547981U Expired - Fee Related CN202231664U (en) | 2011-09-21 | 2011-09-21 | Non-inductance vector frequency converter |
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| CN (1) | CN202231664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953924A (en) * | 2014-03-28 | 2015-09-30 | 发那科株式会社 | Motor drive device |
-
2011
- 2011-09-21 CN CN2011203547981U patent/CN202231664U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953924A (en) * | 2014-03-28 | 2015-09-30 | 发那科株式会社 | Motor drive device |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20130921 |