CN203243229U - Novel frequency converter of controlled rectifier - Google Patents
Novel frequency converter of controlled rectifier Download PDFInfo
- Publication number
- CN203243229U CN203243229U CN 201320303297 CN201320303297U CN203243229U CN 203243229 U CN203243229 U CN 203243229U CN 201320303297 CN201320303297 CN 201320303297 CN 201320303297 U CN201320303297 U CN 201320303297U CN 203243229 U CN203243229 U CN 203243229U
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- CN
- China
- Prior art keywords
- controlled rectifier
- rectifier
- frequency converter
- phase alternating
- alternating current
- 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 - Fee Related
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Abstract
The utility model relates to a novel frequency converter of a controlled rectifier, comprising a three-phase alternating current input part, a driving circuit and an inverter circuit and further comprising a controlled rectifier, wherein R, S and T ends of the controlled rectifier are connected with output ends of the three-phase alternating current input part, two load ends of the inverter circuit are connected with the controlled rectifier, and the driving circuit is electrically connected with the controlled rectifier. By integrating a traditional silicon rectifier and a traditional alternating-current contactor in the controlled rectifier, the production cost is reduced, the adaptability of the novel frequency converter to the environment is improved, and the quality requirement on a power grid is lowered.
Description
Technical field
The utility model relates to the converter technology field, relates in particular to a kind of new type inverter of controlled rectifier.
Background technology
The effect of frequency converter is that the interchange point (three-phase or single-phase) of frequency being fixed (being generally power frequency 50HZ) is exchanged into the continuously adjustable three-phase alternating-current supply of frequency, the input of frequency converter (R, S, T) is connected to the fixing three-phase alternating-current supply of frequency, the frequency of its output (U, V, W) output is continuously adjustable three-phase alternating current within the specific limits, is connected to motor.
The frequency converter of the A.C. contactor that uses in the prior art, Fig. 1 is the schematic diagram of traditional frequency conversion device, 1 is that three-phase alternating current importation, 2 is that silicon rectifier, 3 is that A.C. contactor, 4 is that drive circuit, 5 is inverter circuit among the figure.Silicon rectifier 2 and A.C. contactor 3 in traditional frequency converter separate, caused the raising of production cost, and the requirement of traditional silicon rectifier 2 and 3 pairs of environment of A.C. contactor is higher, can not be high in humidity, dust large, use in the environment of the gas that is corrosive, the applicable ability of environment is more weak, A.C. contactor needs alternating current 220V-330V voltage drive coil simultaneously, so driving voltage is had higher requirement, if grid supply quality is poor, can cause ac contactor coil to burn.
The utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, the new type inverter of the controlled rectifier that a kind of cost is low, the environmental adaptation degree is strong to be provided.
The utility model is to be achieved through the following technical solutions:
A kind of new type inverter of controlled rectifier, comprise three-phase alternating current importation, drive circuit and inverter circuit, also comprise controlled rectifier, the R of described controlled rectifier, S, T end connect the output of three-phase alternating current importation, two load ends of described inverter circuit connect controlled rectifier, and described drive circuit is electrically connected with controlled rectifier.
Further, described controlled rectifier comprises silicon rectifier and diode, and described diode is connected in parallel by resistance and silicon rectifier.
Compared with prior art, the beneficial effects of the utility model are: by traditional silicon rectifier and A.C. contactor are integrated in the controlled rectifier, thereby reduced production cost; And improved its suitable ability to environment, also reduced the quality requirement to electrical network simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of the frequency converter of traditional A.C. contactor;
Fig. 2 is that the utility model is a kind of schematic diagram of new type inverter of controlled rectifier.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 2, Fig. 2 is that the utility model is a kind of schematic diagram of new type inverter of controlled rectifier.
The new type inverter of described a kind of controlled rectifier, comprise three-phase alternating current importation 1, drive circuit 4 and inverter circuit 5, also comprise controlled rectifier 20, the R of described controlled rectifier 20, S, T end connect the output of three-phase alternating current importation 1, two load ends of described inverter circuit 5 connect controlled rectifier 20, and described drive circuit 4 is electrically connected with controlled rectifier 20; Described controlled rectifier 20 comprises silicon rectifier 2 and diode, and described diode is connected in parallel by resistance and silicon rectifier 2.
The outlet end part that comprises three-phase alternating current in the described inverter circuit 5, the frequency by output (U, V, W) output is continuously adjustable three-phase alternating current within the specific limits, is connected to motor.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (2)
1. the new type inverter of a controlled rectifier, comprise three-phase alternating current importation (1), drive circuit (4) and inverter circuit (5), it is characterized in that, also comprise controlled rectifier (20), R, the S of described controlled rectifier (20), T end connects the output of three-phase alternating current importation (1), two load ends of described inverter circuit (5) connect controlled rectifier (20), and described drive circuit (4) is electrically connected with controlled rectifier (20).
2. the new type inverter of a kind of controlled rectifier according to claim 1 is characterized in that, described controlled rectifier (20) comprises silicon rectifier (2) and diode, and described diode is connected in parallel by resistance and silicon rectifier (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303297 CN203243229U (en) | 2013-05-14 | 2013-05-14 | Novel frequency converter of controlled rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303297 CN203243229U (en) | 2013-05-14 | 2013-05-14 | Novel frequency converter of controlled rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203243229U true CN203243229U (en) | 2013-10-16 |
Family
ID=49320483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320303297 Expired - Fee Related CN203243229U (en) | 2013-05-14 | 2013-05-14 | Novel frequency converter of controlled rectifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203243229U (en) |
-
2013
- 2013-05-14 CN CN 201320303297 patent/CN203243229U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20160514 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |