CN202261044U - Special frequency converter for ball grinding mill - Google Patents
Special frequency converter for ball grinding mill Download PDFInfo
- Publication number
- CN202261044U CN202261044U CN2011203328630U CN201120332863U CN202261044U CN 202261044 U CN202261044 U CN 202261044U CN 2011203328630 U CN2011203328630 U CN 2011203328630U CN 201120332863 U CN201120332863 U CN 201120332863U CN 202261044 U CN202261044 U CN 202261044U
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- China
- Prior art keywords
- unit
- frequency converter
- inverting unit
- brake
- inverting
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- Expired - Lifetime
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Abstract
The utility model discloses a special frequency converter for a ball grinding mill which belongs to the technical field of electric power frequency conversion and comprises a rectifying unit and an inverting unit, wherein the rectifying unit and the inverting unit have split modular structures, and the inverting unit comprises more than two independent IGBT (insulated gate bipolar translator) modules. For the special frequency converter for the ball grinding mill, as the rectifying unit and the inverting unit have the split modular structures, and the inverting unit comprises more than two independent IGBT modules, the radiating area of the rectifying unit and the inverting unit is increased, the radiating performance of the rectifying unit and the inverting unit is improved, and the stable and reliable operation of the frequency converter in high-power load is ensured; and as the IGBT modules have the advantages of low driving power, reduced saturation voltage and high switching frequency, good stability of the inverting unit is guaranteed by selecting and using the IGBT modules.
Description
Technical field
The utility model belongs to electric power converter technique field, is specifically related to a kind of ball mill tailored version frequency converter.
Background technology
Along with the development of electronic semi-conductor's technology, more and more science is controlled also in the startup of motor, operation, and adopting the sensorless 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.Along with various electronic devices and components development of integration technology, in present frequency converter design, for practicing thrift cost; Usually select commutation inversion module for use; Be about to rectification unit and inversion unit and be integrated in the module, the structure that has satisfied frequency converter is compact, meets the instructions for use than small space.
In practical application; When especially the load of frequency converter is powerful devices such as ball mill; Commutation inversion module heating easily is serious, even influences the operate as normal of frequency converter, and when a pin of commutation inversion module goes wrong; Whole module all must be changed, and has increased user's maintenance cost.
Summary of the invention
The utility model technical problem to be solved provides a kind of ball mill tailored version frequency converter, can improve the heat dispersion of rectification unit and inversion unit, and does not influence the function of miscellaneous part after wherein parts break down.
For solving the problems of the technologies described above; The technical scheme of the utility model is: design a kind of ball mill tailored version frequency converter; Comprise rectification unit and inversion unit; It is characterized in that: said rectification unit and inversion unit are split type modular structure, and said inversion unit is an IGBT module independently more than two.
Preferably, the output of rectification unit also connects brake unit, and brake unit comprises brake switch and the coupled brake resistance that connects.
Preferably, brake switch is the IGBT module.
The beneficial effect of the utility model is:
1, because rectification unit and inversion unit are split type modular structure; Said inversion unit is an IGBT module independently more than two; Increased the area of dissipation of rectification unit and inversion unit, improved its heat dispersion, guaranteed that frequency converter can reliable and stablely move when high power load; Driving power is little because the IGBT module has, saturation pressure reduces and high switching frequency, selects for use the IGBT module to guarantee inversion unit good stable performance.
2, the output of rectification unit and connect brake unit, brake unit comprises brake switch and the coupled brake resistance that connects, because in frequency conversion speed-adjusting system; The deceleration of motor and stop all to realize that in the moment that frequency converter frequency reduces, the synchronous speed of motor descends thereupon through reducing running frequency gradually; Because machinery inertial, the rotor speed of motor can not be suddenlyd change, and the actual speed of render electrical motivation is greater than given rotating speed; Produce the situation that motor back emf is higher than the frequency converter dc terminal voltage; At this moment motor just becomes generator, not only does not consume the electrical network electric energy, on the contrary through sending to DC side with IGBT module and the diode that connects in the frequency converter; Cause the direct voltage of frequency converter to raise; Consume this part regenerated energy by control unit control brake unit, the direct voltage that has guaranteed frequency converter in range of normal value, prevents that frequency converter is damaged all the time.
Description of drawings
Fig. 1 is the main circuit schematic diagram of the utility model;
Fig. 2 is the main circuit structure sketch map of the utility model.
Mark among the figure: 1, input; 2, rectification unit; 3, filter unit; 4, inversion unit; 5, output; 6, brake unit; 7, brake switch; 8, brake resistance; 9, IGBT module; 10, rectifier bridge module.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Like Fig. 1, shown in 2, the rectification unit 2 of the utility model connects input 1, and rectification unit 2 connects inversion unit 4 through filter unit 3; The output 5 of inversion unit 4 connects power consumption equipment; Rectification unit 2 wherein adopts rectifier bridge module 10, and inversion unit 4 adopts six independently IGBT modules 9, has increased the area of dissipation of rectification unit 2 and inversion unit 4; Improved its heat dispersion, guaranteed that frequency converter can reliable and stablely move when high power load; Driving power is little because IGBT module 9 has, saturation pressure reduces and high switching frequency, selects for use IGBT module 9 to guarantee inversion unit 4 good stable performances.The outlet side of rectification unit 2 also connects brake unit 6; Brake unit 6 comprises brake switch 7 and the coupled brake resistance that connects 8; By the folding of control unit control brake switch 7, brake resistance 8 is inserted, thereby consumed because motor brake flows to the electric energy of frequency converter DC side; The direct voltage that has guaranteed frequency converter in range of normal value, prevents that frequency converter is damaged all the time.Brake switch 7 is selected IGBT module 9 for use, makes the performance of brake switch 7 more stable.
In the work, frequency converter is through input 1 incoming transport power supply, and AC power converts direct current into through rectifier bridge module 10; Direct current provides the DC power supply of steady through filter unit 3 for the IGBT module 9 of inversion unit 4, and the controllable AC power of output outputs to power consumption equipment through output 5 after the inversion; Because rectifier bridge module 10 is independent separately with the IGBT module 9 in the inversion unit 4, when components and parts broke down, other components and parts functional damage can not occur; And the heat radiation gross area of rectifier bridge module 10 and IGBT module 9 is far longer than commutation inversion module; Radiating effect is better, and performance is more stable, and reliability is higher.When motor brake, in the moment that frequency converter frequency reduces, owing to the reason of machinery inertial; The rotor speed of motor can not be suddenlyd change, and at this moment motor just becomes generator, through sending to DC side with IGBT module 9 and the diode that connects in the inversion unit 4; At this moment, control unit is opened according to detection signal control brake switch 7, and brake resistance 8 is inserted; Consume this part regenerated energy, the direct voltage that has guaranteed frequency converter in range of normal value, prevents that frequency converter is damaged all the time.
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 (3)
1. a ball mill tailored version frequency converter comprises rectification unit and inversion unit, it is characterized in that: said rectification unit and inversion unit are split type modular structure, and said inversion unit is an IGBT module independently more than two.
2. according to the described a kind of ball mill tailored version frequency converter of claim 1, it is characterized in that: the output of said rectification unit also connects brake unit, and brake unit comprises brake switch and the coupled brake resistance that connects.
3. according to the described a kind of ball mill tailored version frequency converter of claim 2, it is characterized in that: said brake switch is the IGBT module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203328630U CN202261044U (en) | 2011-09-07 | 2011-09-07 | Special frequency converter for ball grinding mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203328630U CN202261044U (en) | 2011-09-07 | 2011-09-07 | Special frequency converter for ball grinding mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261044U true CN202261044U (en) | 2012-05-30 |
Family
ID=46122225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203328630U Expired - Lifetime CN202261044U (en) | 2011-09-07 | 2011-09-07 | Special frequency converter for ball grinding mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261044U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707158A (en) * | 2017-10-30 | 2018-02-16 | 上海能传软件有限公司 | A kind of frequency converter synthetical restraint system and its method of work |
| CN107786146A (en) * | 2017-12-06 | 2018-03-09 | 深圳市风发科技发展有限公司 | A kind of controller architecture of low power switch reluctance motor |
| CN113179051A (en) * | 2021-04-28 | 2021-07-27 | 一巨自动化装备（上海）有限公司 | Soft switching control method for parking actuator |
-
2011
- 2011-09-07 CN CN2011203328630U patent/CN202261044U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707158A (en) * | 2017-10-30 | 2018-02-16 | 上海能传软件有限公司 | A kind of frequency converter synthetical restraint system and its method of work |
| CN107707158B (en) * | 2017-10-30 | 2020-04-24 | 上海能传软件有限公司 | Frequency converter comprehensive braking system and working method thereof |
| CN107786146A (en) * | 2017-12-06 | 2018-03-09 | 深圳市风发科技发展有限公司 | A kind of controller architecture of low power switch reluctance motor |
| CN113179051A (en) * | 2021-04-28 | 2021-07-27 | 一巨自动化装备（上海）有限公司 | Soft switching control method for parking actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG FUKAGAWA FREQUENCY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANDONG FUKAGAWA ELECTRICAL TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 255000 Shandong deep Sichuan frequency conversion Polytron Technologies Inc, No. 190 Jin Jing Road, hi tech Zone, Shandong, Zibo Patentee after: SHANDONG CHINSC ELECTRICAL TECHNOLOGY CO., LTD. Address before: 255000 Shandong deep Sichuan Electric Technology Co., Ltd., 190 Jin Jing Road, Zibo hi tech Zone, Shandong Patentee before: Shandong Fukagawa Electrical Technology Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Special frequency converter for ball grinding mill Effective date of registration: 20180201 Granted publication date: 20120530 Pledgee: Bank of China Limited by Share Ltd Zibo high new branch Pledgor: SHANDONG CHINSC ELECTRICAL TECHNOLOGY CO., LTD. Registration number: 2018370000025 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |