CN104242670A - Special frequency converter for mining elevator - Google Patents
Special frequency converter for mining elevator Download PDFInfo
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- CN104242670A CN104242670A CN201410460654.2A CN201410460654A CN104242670A CN 104242670 A CN104242670 A CN 104242670A CN 201410460654 A CN201410460654 A CN 201410460654A CN 104242670 A CN104242670 A CN 104242670A
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Abstract
The invention relates to an elevator frequency conversion device, in particular to a special frequency converter for a mining elevator. The special frequency converter comprises a rectifying circuit, an inverter circuit, an electrochemistry capacitor C, a single-chip microcomputer, a charging circuit internally provided with an IGBT, and a discharging circuit internally provided with an IGBT. The input end of the rectifying circuit is connected with a first electric reactor. The input end of the rectifying circuit is connected with the input end of the inverter circuit. The input end of the charging circuit is connected with the positive electrode of the output end of the rectifying circuit. The output end of the charging circuit is connected with one end of the electric reactor. The other end of the electric reactor is connected with one electrode plate of the electrochemistry capacitor. The other electrode plate of the electrochemistry capacitor is connected with the negative electrode of the output end of the rectifying circuit. The input end of the discharging circuit is connected with the output end of the charging circuit. The output end of the discharging circuit is connected with the input end of the charging circuit. The control signal output ends of the single-chip microcomputer are connected with the control port of the IGBT in the charging circuit and the control port of the IGBT in the discharging circuit respectively. The input port of the single-chip microcomputer is connected with the positive electrode and the negative electrode of the output end of the rectifying circuit. The output end of the inverter circuit is connected with a second electric reactor. The special frequency converter solves the problem that regeneration energy generated when the frequency converter is applied to the elevator can not be reasonably processed.
Description
Technical field
The present invention relates to elevator converter plant, be specially a kind of elevator special converter.
Background technology
Current mine elevator Multi-purpose mechanical speed change or wire wound asynchronous motor, wire wound asynchronous motor speed regulating method is crosstalk resistance on rotor, belong to step speed regulation, slip power is large, starting current and gearshift electric current is large, high speed run vibrations large, brake dangerous unreliable, ineffective to regenerated energy process, run in speed governing be not easy, easily slide down, failure rate is high.And frequency conversion speed-adjusting system has excellent speed adjusting performance and energy-saving effect, frequency conversion speed-adjusting system can be applicable to and promotes class load, particularly on Large Copacity elevator, but weight is when being lowered, under gravity, the speed of rotor may be greater than the rotating speed of stator rotating magnetic field, and at this moment elevator becomes generating state, regenerated energy makes busbar voltage raise, and now this part energy must be shifted rapidly.Existing four-quadrant frequency converter can the Way of Regenerating Energy Feedback produced to electrical network, because the electricity of feedback grid can not be ensured the quality of products, country does not advocate, and simultaneously various places electrical network department has clear stipulaties to forbid feeding electrical network regenerating a back electric quantity; Also there is frequency converter inside that resistance consumption is set and fall this part regenerated energy, cause the waste of energy, the amount of heat that resistance produces has influence on peripheral parts again, the fault of frequency converter is increased, if and the resistance of consumes power is cut not in time or resistance is chosen improper, voltage can be caused again to surge, bring very large threat to the reliability of frequency converter.
Summary of the invention
The present invention in order to solve application of frequency converter on mining elevator time the regenerated energy problem that can not reasonably process that produces, provide a kind of mining elevator special converter.
The present invention adopts following technical scheme to realize: a kind of mining elevator special converter, comprise rectification circuit, inverter circuit, electrochemical capacitor C, single-chip microcomputer, charging circuit containing IGBT in it and discharge circuit, the input of rectification circuit is connected with the first Reactor banks, the output of rectification circuit is connected with the input of inverter circuit, the input of charging circuit is connected with the positive pole of the output of rectification circuit, the output of charging circuit is connected with one end of power conversion reactor L, the other end of power conversion reactor L is connected with a pole plate of electrochemical capacitor C, another pole plate of electrochemical capacitor C is connected with the negative pole of the output of rectification circuit, the two ends of electrochemical capacitor C are also parallel with power consumption unit, the input of discharge circuit is connected with the output of charging circuit, the output of discharge circuit is connected with the input of charging circuit, the control signal output of single-chip microcomputer is connected with the control port of charging circuit with the IGBT in discharge circuit respectively, the input port of single-chip microcomputer is connected with the both positive and negative polarity of the output of rectification circuit, the output of inverter circuit is connected with the second Reactor banks.
During use, external power source is connected with the first Reactor banks, and the second Reactor banks is connected with the input of elevator motor, during work, closed external power source, the three-phase electricity of external power source input is through the first Reactor banks, rectification circuit, inverter circuit, second Reactor banks enters in elevator motor, elevator motor obtains electric rotation, until complete heavy lift, when weight is transferred, the rotating speed of motor rotor of hoist is greater than the rotating speed of stator rotating magnetic field, elevator motor enters generating state, the a large amount of of generation become direct current through inverter circuit, on microprocessor detect to the circuit between rectification circuit and inverter circuit, magnitude of voltage raises, single-chip microcomputer opens signal to IGBT in charging circuit mono-, then charging circuit is connected, then electrochemical capacitor starts charging, voltage on circuit between rectification circuit and inverter circuit is reduced, when weight transfers stopping, on circuit between rectification circuit and inverter circuit, magnitude of voltage gets back to safety value, single-chip microcomputer opens signal to the IGBT in discharge loop mono-, the electricity that electrochemical capacitor stores is discharged by discharge circuit, be supplied to elevator machine operation, the present invention has rationally processed the renewable energy resources produced in elevator work.
Above-mentioned a kind of mining elevator special converter, be also connected with electric capacity C1 between the both positive and negative polarity of the output of rectification circuit, electric capacity C1 can stablize the voltage of rectification circuit output end.
The invention provides a kind of mining elevator special converter, the regenerated energy produced during elevator machine operation can store by this frequency converter, and the fault offset of storage is used for motor lifting heavy, achieve the Appropriate application to the regenerated energy that elevator motor produces.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
A kind of mining elevator special converter, comprise rectification circuit, inverter circuit, electrochemical capacitor C, single-chip microcomputer, charging circuit containing IGBT in it and discharge circuit, the input of rectification circuit is connected with the first Reactor banks, the output of rectification circuit is connected with the input of inverter circuit, the input of charging circuit is connected with the positive pole of the output of rectification circuit, the output of charging circuit is connected with one end of power conversion reactor L, the other end of power conversion reactor L is connected with a pole plate of electrochemical capacitor C, another pole plate of electrochemical capacitor C is connected with the negative pole of the output of rectification circuit, the two ends of electrochemical capacitor C are also parallel with power consumption unit, the input of discharge circuit is connected with the output of charging circuit, the output of discharge circuit is connected with the input of charging circuit, the control signal output of single-chip microcomputer is connected with the control port of charging circuit with the IGBT in discharge circuit respectively, the input port of single-chip microcomputer is connected with the both positive and negative polarity of the output of rectification circuit, the output of inverter circuit is connected with the second Reactor banks.Above-mentioned a kind of mining elevator special converter, the output positive and negative charge of rectification circuit is also connected with electric capacity C1.
Claims (2)
1. a mining elevator special converter, comprise rectification circuit, inverter circuit, electrochemical capacitor C, single-chip microcomputer, charging circuit containing IGBT in it and discharge circuit, the input of rectification circuit is connected with the first Reactor banks, the output of rectification circuit is connected with the input of inverter circuit, the input of charging circuit is connected with the positive pole of the output of rectification circuit, the output of charging circuit is connected with one end of power conversion reactor L, the other end of power conversion reactor L is connected with a pole plate of electrochemical capacitor C, another pole plate of electrochemical capacitor C is connected with the negative pole of the output of rectification circuit, the two ends of electrochemical capacitor C are also parallel with power consumption unit, the input of discharge circuit is connected with the output of charging circuit, the output of discharge circuit is connected with the input of charging circuit, the control signal output of single-chip microcomputer is connected with the control port of charging circuit with the IGBT in discharge circuit respectively, the input port of single-chip microcomputer is connected with the both positive and negative polarity of the output of rectification circuit, the output of inverter circuit is connected with the second Reactor banks.
2. a kind of mining elevator special converter according to claim 1, is also connected with electric capacity C1 between the both positive and negative polarity that it is characterized in that the output of rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460654.2A CN104242670A (en) | 2014-09-04 | 2014-09-04 | Special frequency converter for mining elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460654.2A CN104242670A (en) | 2014-09-04 | 2014-09-04 | Special frequency converter for mining elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242670A true CN104242670A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410460654.2A Pending CN104242670A (en) | 2014-09-04 | 2014-09-04 | Special frequency converter for mining elevator |
Country Status (1)
| Country | Link |
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| CN (1) | CN104242670A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991040A (en) * | 2015-02-10 | 2016-10-05 | 神华集团有限责任公司 | Frequency converter power unit and frequency converter |
| CN111422768A (en) * | 2020-04-14 | 2020-07-17 | 洛阳源创电气有限公司 | Super-huge lifting machine driving device and electric control system |
| CN111422769A (en) * | 2020-04-14 | 2020-07-17 | 洛阳源创电气有限公司 | Built-in hoist electrical system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039081Y (en) * | 2007-04-03 | 2008-03-19 | 李志宏 | Frequency conversion speed-adjusting circuit for mine lifter |
| CN203233313U (en) * | 2013-05-22 | 2013-10-09 | 山西晋城无烟煤矿业集团有限责任公司 | Frequency converter specially for coal mine elevator |
-
2014
- 2014-09-04 CN CN201410460654.2A patent/CN104242670A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039081Y (en) * | 2007-04-03 | 2008-03-19 | 李志宏 | Frequency conversion speed-adjusting circuit for mine lifter |
| CN203233313U (en) * | 2013-05-22 | 2013-10-09 | 山西晋城无烟煤矿业集团有限责任公司 | Frequency converter specially for coal mine elevator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991040A (en) * | 2015-02-10 | 2016-10-05 | 神华集团有限责任公司 | Frequency converter power unit and frequency converter |
| CN111422768A (en) * | 2020-04-14 | 2020-07-17 | 洛阳源创电气有限公司 | Super-huge lifting machine driving device and electric control system |
| CN111422769A (en) * | 2020-04-14 | 2020-07-17 | 洛阳源创电气有限公司 | Built-in hoist electrical system |
| CN111422769B (en) * | 2020-04-14 | 2021-05-25 | 洛阳源创电气有限公司 | Built-in hoist electrical system |
| CN111422768B (en) * | 2020-04-14 | 2021-05-25 | 洛阳源创电气有限公司 | Super-huge lifting machine driving device and electric control system |
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Application publication date: 20141224 |
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| WD01 | Invention patent application deemed withdrawn after publication |