CN202334434U - High-performance vector frequency converter - Google Patents
High-performance vector frequency converter Download PDFInfo
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- CN202334434U CN202334434U CN2011204546083U CN201120454608U CN202334434U CN 202334434 U CN202334434 U CN 202334434U CN 2011204546083 U CN2011204546083 U CN 2011204546083U CN 201120454608 U CN201120454608 U CN 201120454608U CN 202334434 U CN202334434 U CN 202334434U
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Abstract
The utility model discloses a high-performance vector frequency converter, belonging to the technical field of electric power frequency conversion. The high-performance vector frequency converter comprises a frequency-conversion output circuit and a control circuit, wherein the control circuit comprises a CPU (Central Processing Unit) and a signal acquisition unit, and the CPU controls the frequency-conversion output circuit according to the signals of the signal acquisition circuit. The high-performance vector frequency converter is characterized in that the signal acquisition unit comprises an underload detection module which is connected with the output end of the frequency-conversion output circuit. In the high-performance vector frequency converter disclosed by the utility model, because the signal acquisition unit comprises the underload detection module which is connected with the power output end of the power-frequency output circuit, the load parameters of the power output end of the frequency-conversion output circuit are detected by the underload detection module in real time, so that the CPU issues a control command to the frequency-conversion output circuit after performing calculation and coordination according to the load parameters and converts the control command into the output control of the frequency, voltage and current of a motor so as to complete the start/stop control of a pump, thus the underload protection and the power-saving control of the pump are realized.
Description
Technical field
The utility model belongs to electric power converter technique field, is specifically related to a kind of high-performance vector frequency converter.
Background technology
Under current scientific and technological social environment, people's life, production be unable to do without immersed pump classes such as immersible pump, submersible sewage pump, oil-immersed pump, compare with the conventional pump class; This kind pump class have very big characteristics be exactly liquid load be the cooling agent of the pump housing simultaneously; Be that this kind pump class is not suitable for long-time no-load running, during no-load running, on the one hand owing to lack the cooling effect of liquid load; Will be burnt in general tens minutes, had a strong impact on the useful life of the pump housing; On the other hand, because the no-load running of the pump housing will be wasted electric energy greatly.
Along with the development of electronic semi-conductor's technology, adopting vector frequency converter mostly is the power supply that alternating current machine provides voltage regulation and frequency modulation, realizes the exciting current and the separately accurately control of torque current of alternating current machine.And the present frequency converter that adopts comprises frequency conversion output circuit and control circuit; Control circuit comprises CPU element and fault message detection module; CPU element is according to the output of the power supply of the signal controlling inversion unit of fault message detection module, to realize the protections such as overvoltage, under voltage, overload, over torque, overcurrent to power consumption equipments such as motors.In practical application, this kind frequency converter has been realized the science control to the conventional pump class, but can't realize the underload protection to above-mentioned immersed pump class, and Energy Saving Control.
Summary of the invention
The utility model technical problem to be solved provides a kind of high-performance vector frequency converter, can realize the underload protection and the Energy Saving Control of immersed pump class.
For solving the problems of the technologies described above; The technical scheme of the utility model is: design a kind of high-performance vector frequency converter; Comprise frequency conversion output circuit and control circuit, control circuit comprises CPU element and signal gathering unit, and CPU element is according to the signal controlling frequency conversion output circuit of signal gathering unit; It is characterized in that: signal gathering unit comprises underload detection module, and underload detection module connects the output of frequency conversion output circuit.
Preferably, underload detection module is a current sensor.
Preferably, also comprise the PLC module, the mutual transmission of control command between completion of PLC module and the CPU element.
Preferably, also comprise information display module, information display module shows the trip information of CPU element.
Preferably, also comprise Keysheet module, Keysheet module is that CPU element provides pre-set parameter.
Preferably, signal gathering unit also comprises the fault message detection module, and the fault message detection module is that CPU element provides fault message.
Preferably, also comprise communication module, communication module is realized the information interaction between CPU element and host computer, is used for the remote monitoring of frequency converter.
The beneficial effect of the utility model is:
1, owing to comprised underload detection module in the signal gathering unit; Underload detection module connects the output of frequency conversion output circuit; Realized that underload detection module detects the load parameter of the power output end of frequency conversion output circuit in real time, thereby made CPU element calculate, the frequency conversion output circuit sent control command after coordinating, and converted the output control of frequency to motor, voltage, electric current into according to load parameter; Accomplish the start and stop control of pump, realize the underload protection and the economize on electricity control of pump.
2,, make the detection control of system more direct, simple because underload detection module adopts the current sensor form.
3, since adopt the PLC module accomplish and CPU element between the mutual transmission of control command, make the PLC module through the internal programmable logic receive startup, shutdown, F.F., rewind down that operating desk gives frequency converter, exercises order and the external relevant logical order of output such as reset.
4, owing to adopt information display module to show the trip information of CPU element; The good man-machine interaction interface is provided, has shown information such as each state information such as running frequency, output current, output voltage, fault message, operation process, inner parameter more intuitively.
5, because to adopt Keysheet module be that CPU element provides pre-set parameter, be convenient to the user to the startup of the modification of parameter, frequency converter, stop, operation such as fault resets.
6, because to adopt the fault message detection module be that CPU element provides fault message, realize detection of information such as voltage, electric current, temperature, avoided that pump transships, phenomenons such as overvoltage, under-voltage, overheated, phase shortage, prolonged the useful life of pump.
7, since adopt communication module accomplish between CPU element and host computer information interaction and to the remote monitoring of frequency converter, make the ruuning situation that the user can the remote monitoring frequency converter, convenient for users to use.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model.
Mark among the figure: 1, CPU element; 2, frequency conversion output circuit; 3, PLC module; 4, communication module; 5, information display module; 6, Keysheet module; 7, signal gathering unit; 71, underload detection module; 72, fault message detection module.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
As shown in Figure 1; Signal gathering unit 7 in the utility model control circuit comprises underload detection module 71 and fault message detection module 72; Underload detection module 71 is a current sensor, is used for detecting the current value of frequency conversion output circuit 2 outputs, and detection signal is sent to CPU element 1 is judged, computing; CPU element 1 sends control signal corresponding to inversion unit then; Finally convert the output control of frequency to motor, voltage, electric current into, accomplish the start and stop control of pump, realize the underload protection and the economize on electricity control of pump.This frequency converter can adopt PLC module 3 accomplish with CPU element 1 between the mutual transmission of control command, make PLC module 3 through the internal programmable logic receive startup, shutdown, F.F., rewind down that operating desk gives frequency converter, exercises order and the external output logical order of being correlated with such as reset.Can also adopt information display module 5 to show the trip information of CPU element 1, the good man-machine interaction interface is provided, realize more intuitive information display function.Adopt Keysheet module 6 pre-set parameter to be provided for CPU element 1, be convenient to the user to the startup of the modification of parameter, frequency converter, stop, operation such as fault resets.Adopt fault message detection module 72 fault message to be provided, realized the detection of information such as voltage, electric current, temperature of this frequency converter, prolonged the useful life of frequency converter for CPU element 1.The information interaction that adopts communication module 4 to realize between CPU elements 1 and host computer is used for the remote monitoring of frequency converter, makes the ruuning situation that the user can the remote monitoring frequency converter, and is convenient for users to use.
During use; The user is manual earlier perhaps to deliver to CPU element 1 through communication module 4 with parameters such as running frequency, the underload detection mode of equipment, the underload protective current of equipment, the underload guard time of equipment, the underload protected modes of equipment through host computer through Keysheet module 6; CPU element 1 carries out information to be differentiated, after confirmation is correct information is stored memory.
After powering on; The user can deliver to CPU element 1 through relevant instructions such as Keysheet module 6, PLC module 3 or communication module 4 will start, stop; CPU element 1 is judged after the relevant instruction; The execution action such as will start, stop again and deliver to pump and relevant peripheral actuator, the startup of control pump, stop and the exercises of peripheral actuator through the output of PLC module 3 and inversion unit.
In service; CPU element 1 constantly detects the electric current of frequency conversion output circuit 2 through current sensor, i.e. load equipment operating current is according to the underload detection mode of setting of equipment; Judge whether the frequency converter output current is lower than the underload protective current of equipment of setting; If be lower than, then carry out timing, if timing time reaches the underload guard time of equipment of setting; Then according to the underload protected mode of setting of equipment to current running status carry out out of service, restart, continue processing such as operation, sound and light alarm automatically by setting time-delay, do not burnt perhaps purpose of energy saving with realization protection equipment.
Simultaneously, CPU element 1 also passes through the relevant information of fault message detection module 72 continuous detection system supply power voltages, output current, frequency converter temperature.Check whether overvoltage is arranged, faults such as under-voltage, overload, excess temperature take place, if there is fault to take place, then report to the police immediately or relevant protection action such as shutdown, to guarantee user's personal safety as well as the property safety.
In the whole process, CPU element 1 is through information display module 5, and the various operation informations of system, fault message etc. are shown.
It is to be noted; Above-mentioned execution mode only is the utility model preferred embodiment; For those skilled in the art, under the prerequisite that meets the utility model operation principle, any be equal to or similar replacement all falls in the protection range of the utility model.
Claims (7)
1. high-performance vector frequency converter; Comprise frequency conversion output circuit and control circuit; Control circuit comprises CPU element and signal gathering unit; CPU element is according to the signal controlling frequency conversion output circuit of signal gathering unit, and it is characterized in that: signal gathering unit comprises underload detection module, and underload detection module connects the output of frequency conversion output circuit.
2. according to the described a kind of high-performance vector frequency converter of claim 1, it is characterized in that: underload detection module is a current sensor.
3. according to the described a kind of high-performance vector frequency converter of claim 2, it is characterized in that: also comprise the PLC module, the mutual transmission of control command between completion of PLC module and the CPU element.
4. according to the described a kind of high-performance vector frequency converter of claim 3, it is characterized in that: also comprise information display module, information display module shows the trip information of CPU element.
5. according to the described a kind of high-performance vector frequency converter of claim 4, it is characterized in that: also comprise Keysheet module, Keysheet module is that CPU element provides pre-set parameter.
6. according to the described a kind of high-performance vector frequency converter of claim 5, it is characterized in that: signal gathering unit also comprises the fault message detection module, and the fault message detection module is that CPU element provides fault message.
7. according to the described a kind of high-performance vector frequency converter of claim 6, it is characterized in that: also comprise communication module, communication module is realized the information interaction between CPU element and host computer, is used for the remote monitoring of frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204546083U CN202334434U (en) | 2011-11-17 | 2011-11-17 | High-performance vector frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204546083U CN202334434U (en) | 2011-11-17 | 2011-11-17 | High-performance vector frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334434U true CN202334434U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204546083U Expired - Fee Related CN202334434U (en) | 2011-11-17 | 2011-11-17 | High-performance vector frequency converter |
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| CN (1) | CN202334434U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467592A (en) * | 2014-11-25 | 2015-03-25 | 索肯和平(上海)电气有限公司 | Vector control electric limited slip differential |
| CN105281641A (en) * | 2015-04-20 | 2016-01-27 | 重庆有法数控设备有限责任公司 | Vector frequency converter for alternating current motor |
| CN105846655A (en) * | 2016-06-14 | 2016-08-10 | 汤海涛 | Vector type high-performance converter |
| CN105978437A (en) * | 2016-06-14 | 2016-09-28 | 汤海涛 | High-performance vector frequency converter |
| CN110221552A (en) * | 2018-03-01 | 2019-09-10 | 上海九物科技有限公司 | A kind of frequency-converter device and its control method of the transmission of long distance wireless data |
-
2011
- 2011-11-17 CN CN2011204546083U patent/CN202334434U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467592A (en) * | 2014-11-25 | 2015-03-25 | 索肯和平(上海)电气有限公司 | Vector control electric limited slip differential |
| CN104467592B (en) * | 2014-11-25 | 2017-07-14 | 浙江硕仕电气科技有限公司 | A kind of electric limited-slip differential of vector controlled |
| CN105281641A (en) * | 2015-04-20 | 2016-01-27 | 重庆有法数控设备有限责任公司 | Vector frequency converter for alternating current motor |
| CN105846655A (en) * | 2016-06-14 | 2016-08-10 | 汤海涛 | Vector type high-performance converter |
| CN105978437A (en) * | 2016-06-14 | 2016-09-28 | 汤海涛 | High-performance vector frequency converter |
| CN110221552A (en) * | 2018-03-01 | 2019-09-10 | 上海九物科技有限公司 | A kind of frequency-converter device and its control method of the transmission of long distance wireless data |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 255086 Shandong Province, Zibo city Zhangdian District Ming Road No. 1 Zibo three Electronic Technology Co. Ltd. Patentee after: Shandong three Electronic Technology Co. Ltd. Address before: 255086 Shandong Province, Zibo city Zhangdian District Ming Road No. 1 Zibo three Electronic Technology Co. Ltd. Patentee before: Zibo Sanpin Electronic Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20171117 |