CN201018454Y - Variable frequency speed regulator for mining capable of implementing soft switch - Google Patents
Variable frequency speed regulator for mining capable of implementing soft switch Download PDFInfo
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- CN201018454Y CN201018454Y CNU2007201069902U CN200720106990U CN201018454Y CN 201018454 Y CN201018454 Y CN 201018454Y CN U2007201069902 U CNU2007201069902 U CN U2007201069902U CN 200720106990 U CN200720106990 U CN 200720106990U CN 201018454 Y CN201018454 Y CN 201018454Y
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- frequency
- controller
- soft handover
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- variable frequency
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- 238000005065 mining Methods 0.000 title claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 2
- 230000007812 deficiency Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000013598 vector Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model discloses a mine variable frequency speed-adjusting device for realizing the soft switching, which orderly comprises a three-phase filter, an isolated reversing switch, a rectification bridge, an intermediate DC circuit, an IGBT inverting module and a variable frequency integrated controller in series; wherein the variable frequency integrated controller comprises a variable frequency controller, a soft switching control device and a PLC unit, the soft switching control device comprises a soft switching controller, a power frequency contactor, a variable frequency contactor and a power supply transformer. The utility model has the advantages of that the device makes the variable frequency output voltage inosculated with the power frequency voltage phase and amplitude through the tracking and comparison of the voltage feedback signal in order to eliminate the generation of the impact current caused by the phasor difference of the phase and amplitude of the variable frequency output voltage and the power frequency voltage when switching, and the zero impact current switching from the variable frequency operation to the power frequency operation solves the deficiency of the existing technology.
Description
Technical field
The utility model relates to a kind of RHVC, relates in particular to a kind of mining RHVC that realizes soft handover.
Background technology
Along with the development of AC converter technology, drag in the occasion Inverter Application more and more widely at motor, except the good starting performance of frequency converter, the AC converter technology makes that the continuous regulation and control of aim parameter are more convenient.Therefore, engineers and technicians have creatively proposed " one drag many " technical scheme, drag multiple electric motors step by step by a frequency converter, solved motor smooth start problem, solve aim parameter again and regulated and control continuously, improved the riding quality of system, reduced the manufacturing cost of system.In " one drag many " technical scheme, how a motor is switched to power frequency operation by converting operation, be the key of its technical development.Because when motor is in converting operation, because its output SPWM voltage vector is free on the line voltage vector, the two exists voltage vector poor, and changes by sinusoidal rule.Because relatively moving of two groups of independence rotating vectors, the switching shock electric current will reach tens to tens times of rated current, impact to electrical network and equipment all is unallowed, general now the employing adds AC reactor at mains side, switch the impulse current that moment produces to have eliminated, but such method has increased the volume of cost and mining variable-frequency governor.
The utility model content
The utility model is to overcome above-mentioned weak point, purpose has been to provide a kind of mining RHVC that realizes soft handover, this device is by tracking and contrast to voltage feedback signal, accomplish that frequency conversion output voltage and power-frequency voltage phase place and amplitude match, do not need the reactor of increasing exchanges, can eliminate the generation that causes impulse current when switching owing to the vector difference of both voltage-phases and amplitude, solve the deficiencies in the prior art part.
The utility model is to achieve the above object by the following technical programs: a kind of mining RHVC that realizes soft handover comprises Three-phase electric-wave filter, isolation reversing switch, rectifier bridge, intermediate DC circuit, the IGBT inversion module of connecting successively; Its characteristics also comprise a frequency conversion general controller, described frequency conversion general controller comprises frequency-variable controller and soft handover control device, the PLC unit, described soft handover control device comprises the soft handover controller, the power frequency contactor, the frequency conversion contactor, supply transformer, described soft handover controller links to each other with the PLC unit, described supply transformer respectively with frequency-variable controller, the soft handover controller links to each other, described power frequency contactor is with in parallel with the frequency conversion contactor again after supply transformer is connected, the input of described parallel circuits is connected to the output of frequency-variable controller, and output is connected to the output of IGBT inversion module.
Described frequency-variable controller comprises power supply, integrated control panel ASSY unit, CPU, interface board LINK unit; Interface board LINK unit links to each other with intermediate DC circuit, and CPU links to each other with interface board LINK unit, and CPU links to each other with the PLC unit, and the PLC unit links to each other with integrated control panel ASSY unit; Described power supply is used for providing power supply to interface board, integrated control panel ASSY unit, interface board provides the signal of gathering to CPU, CPU handles the back and provides signal to the PLC unit, and described integrated control panel ASSY accepts the instruction that the PLC unit sends in the unit, control IGBT inversion module.
As preferably, also comprise a display, described display links to each other with the CPU of frequency-variable controller.
As preferably, the interface between the CPU of display and frequency-variable controller adopts optical communication interface.
The beneficial effects of the utility model: this device is by tracking and contrast to voltage feedback signal, accomplish that frequency conversion output voltage and power-frequency voltage phase place and amplitude match, eliminated when switching because the vector difference of both voltage-phases and amplitude causes the generation of impulse current, switch by the zero impulse current of converting operation, solved the deficiencies in the prior art part to power frequency operation.
Description of drawings
Fig. 1 is a kind of fundamental diagram of realizing the mining RHVC of soft handover among the utility model embodiment 1;
Fig. 2 is the fundamental diagram that a kind of among the utility model embodiment 1 realizes frequency conversion general controller in the mining RHVC of soft handover;
Fig. 3 is the fundamental diagram that a kind of among the utility model embodiment 1 realizes soft handover controller in the mining RHVC of soft handover;
Fig. 4 is a kind of circuit diagram of realizing the mining RHVC of soft handover among the utility model embodiment 1.
Embodiment
The utility model is further elaborated by embodiment below in conjunction with accompanying drawing:
Embodiment 1: as shown in the figure, a kind of mining RHVC that realizes soft handover, comprise the Three-phase electric-wave filter 1 of series connection successively, isolate reversing switch 2, rectifier bridge 3, intermediate DC circuit 4, IGBT inversion module 5, frequency conversion general controller 9, display 8, described frequency conversion general controller 9 comprises frequency-variable controller and soft handover control device, the PLC unit, described soft handover control device comprises the soft handover controller, power frequency contactor 6, frequency conversion contactor 7, supply transformer 10, described soft handover controller links to each other with the PLC unit, described supply transformer 10 respectively with frequency-variable controller, the soft handover controller links to each other, described power frequency contactor is with in parallel with the frequency conversion contactor again after supply transformer 10 is connected, the input of described parallel circuits is connected to the output of frequency-variable controller, and output is connected to the output of IGBT inversion module.Described frequency-variable controller comprises power supply, integrated control panel ASSY unit, CPU, interface board LINK unit; Interface board LINK unit links to each other with intermediate DC circuit 4, and CPU links to each other with interface board LINK unit, and CPU links to each other with the PLC unit, and the PLC unit links to each other with integrated control panel ASSY unit; Described power supply is used for providing power supply to interface board, integrated control panel ASSY unit, interface board provides the signal of gathering to CPU, CPU handles the back and provides signal to the PLC unit, described integrated control panel ASSY accepts the instruction that the PLC unit sends in the unit, control IGBT inversion module 5, described display 8 links to each other with the CPU of frequency-variable controller.Interface between the CPU of display 8 and frequency-variable controller adopts optical communication interface.
This device: 1) realized the frequency control of high-power AC1140 electric pressure, remedied domestic blank; 2) this device is by tracking and contrast to voltage feedback signal, accomplish that frequency conversion output voltage and power-frequency voltage phase place and amplitude match, eliminate the generation that causes impulse current when switching owing to the vector difference of both voltage-phases and amplitude, solved the deficiencies in the prior art part.3) this device is by the interface between the CPU of the interface between the CPU that uses optical communication interface connection display and frequency converter and IGBT trigger board and frequency converter, eliminated of the interference of each interference source to communication signal and triggering signal, improve the accuracy of each control signal, solved the deficiencies in the prior art part.
Claims (4)
1. the mining RHVC that can realize soft handover comprises Three-phase electric-wave filter (1), isolation reversing switch (2), rectifier bridge (3), intermediate DC circuit (4), the IGBT inversion module (5) of connecting successively; It is characterized in that also comprising a frequency conversion general controller (9), described frequency conversion general controller (9) comprises frequency-variable controller and soft handover control device, the PLC unit, described soft handover control device comprises the soft handover controller, power frequency contactor (6), frequency conversion contactor (7), supply transformer (10), described soft handover controller links to each other with the PLC unit, described supply transformer (10) respectively with frequency-variable controller, the soft handover controller links to each other, described power frequency contactor is with in parallel with the frequency conversion contactor again after supply transformer (10) is connected, the input of described parallel circuits is connected to the output of frequency-variable controller, and output is connected to the output of IGBT inversion module.
2. a kind of mining RHVC that realizes soft handover according to claim 1 is characterized in that described frequency-variable controller comprises power supply, integrated control panel ASSY unit, CPU, interface board LINK unit; Interface board LINK unit links to each other with intermediate DC circuit (4), and CPU links to each other with interface board LINK unit, and CPU links to each other with the PLC unit, and the PLC unit links to each other with integrated control panel ASSY unit; Described power supply is used for providing power supply to interface board, integrated control panel ASSY unit, interface board provides the signal of gathering to CPU, CPU handles the back and provides signal to the PLC unit, and described integrated control panel ASSY accepts the instruction that the PLC unit sends in the unit, control IGBT inversion module (5).
3. a kind of mining RHVC that realizes soft handover according to claim 2 is characterized in that also comprising a display (8), and described display (8) links to each other with the CPU of frequency-variable controller.
4. a kind of mining RHVC that realizes soft handover according to claim 3 is characterized in that the interface between the CPU of display (8) and frequency-variable controller adopts optical communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201069902U CN201018454Y (en) | 2007-03-08 | 2007-03-08 | Variable frequency speed regulator for mining capable of implementing soft switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201069902U CN201018454Y (en) | 2007-03-08 | 2007-03-08 | Variable frequency speed regulator for mining capable of implementing soft switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201018454Y true CN201018454Y (en) | 2008-02-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201069902U Expired - Fee Related CN201018454Y (en) | 2007-03-08 | 2007-03-08 | Variable frequency speed regulator for mining capable of implementing soft switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201018454Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488727B (en) * | 2008-10-24 | 2011-04-27 | 广东华拿东方能源有限公司 | Undisturbed switching variable frequency speed control system for medium voltage electric motor and speed control method |
| CN104811120A (en) * | 2015-05-25 | 2015-07-29 | 连云港天明装备有限公司 | Variable frequency speed control method for coal mine scraper conveying equipment |
| CN105227001A (en) * | 2015-10-14 | 2016-01-06 | 株洲变流技术国家工程研究中心有限公司 | A kind of frequency conversion speed-adjusting system for multi-load and method thereof |
-
2007
- 2007-03-08 CN CNU2007201069902U patent/CN201018454Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488727B (en) * | 2008-10-24 | 2011-04-27 | 广东华拿东方能源有限公司 | Undisturbed switching variable frequency speed control system for medium voltage electric motor and speed control method |
| CN104811120A (en) * | 2015-05-25 | 2015-07-29 | 连云港天明装备有限公司 | Variable frequency speed control method for coal mine scraper conveying equipment |
| CN105227001A (en) * | 2015-10-14 | 2016-01-06 | 株洲变流技术国家工程研究中心有限公司 | A kind of frequency conversion speed-adjusting system for multi-load and method thereof |
| CN105227001B (en) * | 2015-10-14 | 2018-04-13 | 株洲变流技术国家工程研究中心有限公司 | A kind of frequency conversion speed-adjusting system and its method for multi-load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Hengtai Technology Co., Ltd. Assignor: Fei Jianghai Contract record no.: 2010330000198 Denomination of utility model: Variable frequency speed regulator for mining capable of implementing soft switch Granted publication date: 20080206 License type: Exclusive License Record date: 20100303 |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG HENGTAI TECHNOLOGY CO.,LTD Free format text: FORMER OWNER: FEI JIANGHAI Effective date: 20100630 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 322200 ZHEJIANG HENGTAI TECHNOLOGY CO., LTD., PUJIANG ECONOMIC DEVELOPMENT ZONE, PUJIANG COUNTY, ZHEJIANG PROVINCE TO: 322200 ZHEJIANG HENGTAI TECHNOLOGY CO., LTD., NO. 288, YIDIANHONG STREET, ECONOMY DEVELOPMENT ZONE, PUJIANG COUNTY HEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100630 Address after: 322200 Zhejiang Hengtai Technology Co., Ltd., 288 Red Avenue, Pujiang Economic Development Zone, Zhejiang, China Patentee after: Zhejiang Hengtai Technology Co., Ltd. Address before: 322200 Zhejiang Hengtai Technology Co., Ltd., Pujiang Economic Development Zone, Zhejiang County, Pujiang Province Patentee before: Fei Jianghai |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20150308 |
|
| EXPY | Termination of patent right or utility model |