CN201383759Y - Mining frequency changer - Google Patents
Mining frequency changer Download PDFInfo
- Publication number
- CN201383759Y CN201383759Y CN200920107803U CN200920107803U CN201383759Y CN 201383759 Y CN201383759 Y CN 201383759Y CN 200920107803 U CN200920107803 U CN 200920107803U CN 200920107803 U CN200920107803 U CN 200920107803U CN 201383759 Y CN201383759 Y CN 201383759Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- inverter circuit
- rectification circuit
- mine
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a mining frequency changer which comprises a rectification circuit used as an input portion, wherein the output end of the rectification circuit is connected with an inverter circuit, a contactor is connected between the rectification circuit and the inverter circuit, and two ends of the inverter circuit are connected with circuits whose resistances and capacitors are connected into parallel. The frequency changer can be applied in places which have hostile environment and need high-power frequency changers such as underground coal mines, open pit mines, port terminals, coal preparation plants, power plants and the like.
Description
Technical field
The utility model relates to a kind of mine-used frequency-converter.
Background technology
Along with the develop rapidly of modern power electronics technology, frequency converter more and more widely be applied in a lot of fields, for example various weavings, machinery, illumination, computer control etc. also are applied under the coal mine in each electric equipment simultaneously.And, certainly will higher requirement be arranged to frequency converter owing to bad working environment under the coal mine, and the operating voltage and the power of frequency converter commonly used are less, can't satisfy the demand of the inferior environmental work of coal mine.
Summary of the invention
The purpose of this utility model is to improve above-mentioned deficiency of the prior art and a kind of mine-used frequency-converter is provided, and has solved the requirement that needs a kind of powerful frequency converter under coal mine.
The purpose of this utility model reaches by following measure:
The importation of the utility model mine-used frequency-converter is a rectification circuit, and output is connected to an inverter circuit, is connected to a contactor between rectification circuit and the inverter circuit.The two ends of inverter circuit are connected with the resistance circuit in parallel with electric capacity.
The utility model mine-used frequency-converter comprises rectification circuit, and output is an inverter circuit, and electrochemical capacitor is connected in parallel on rectification circuit, inverter circuit two ends.One rectifier transformer with polygon winding is set between rectification circuit and ac power input end.
Advantage of the present utility model is:
The utility model mine-used frequency-converter can be applicable under the coal mine and adverse circumstances such as surface mine, port and pier, coal preparation plant, power plant in need the place of big-power transducer.
Description of drawings
Fig. 1: the utility model embodiment 1 principle schematic;
Fig. 2: the utility model embodiment 2 principle schematic.
Embodiment
Execution mode 1:
As shown in Figure 1, the importation of the utility model mine-used frequency-converter is a rectification circuit 1, and output is connected to an inverter circuit 2, is connected to a contactor 3 between rectification circuit 1 and the inverter circuit 2.The two ends of inverter circuit 2 are connected with the resistance circuit in parallel with electric capacity.
Execution mode 2:
As shown in Figure 2, the utility model mine-used frequency-converter comprises rectification circuit 1, and output is an inverter circuit 2, and electrochemical capacitor 4 is connected in parallel on rectification circuit 1, inverter circuit 2 two ends.One rectifier transformer 5 with polygon winding is set between rectification circuit 1 and ac power input end.Frequency converter when work, when connecting AC power, on the winding of rectifier transformer 5, induce each the road that voltage is given rectification circuit.
Claims (2)
1, a kind of mine-used frequency-converter is characterized in that: comprise the rectification circuit as the importation, output is connected to an inverter circuit, is connected to a contactor between rectification circuit and the inverter circuit; The two ends of inverter circuit are connected with the resistance circuit in parallel with electric capacity.
2, a kind of mine-used frequency-converter is characterized in that: comprise rectification circuit, output is an inverter circuit, and electrochemical capacitor is connected in parallel on rectification circuit, inverter circuit two ends; One rectifier transformer with polygon winding is set between rectification circuit and ac power input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107803U CN201383759Y (en) | 2009-04-29 | 2009-04-29 | Mining frequency changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107803U CN201383759Y (en) | 2009-04-29 | 2009-04-29 | Mining frequency changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201383759Y true CN201383759Y (en) | 2010-01-13 |
Family
ID=41527230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920107803U Expired - Lifetime CN201383759Y (en) | 2009-04-29 | 2009-04-29 | Mining frequency changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201383759Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009646A (en) * | 2014-06-13 | 2014-08-27 | 济宁市华玮机电有限公司 | Mine AC and DC adjustable intelligent control device |
| CN111049397A (en) * | 2019-12-28 | 2020-04-21 | 新风光电子科技股份有限公司 | Multi-group parallel roller variable-frequency heating power supply system and control method |
-
2009
- 2009-04-29 CN CN200920107803U patent/CN201383759Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009646A (en) * | 2014-06-13 | 2014-08-27 | 济宁市华玮机电有限公司 | Mine AC and DC adjustable intelligent control device |
| CN111049397A (en) * | 2019-12-28 | 2020-04-21 | 新风光电子科技股份有限公司 | Multi-group parallel roller variable-frequency heating power supply system and control method |
| CN111049397B (en) * | 2019-12-28 | 2022-03-08 | 新风光电子科技股份有限公司 | Control method of multi-group parallel roller variable-frequency heating power supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100113 |