CN204481688U - A kind of frequency converter - Google Patents
A kind of frequency converter Download PDFInfo
- Publication number
- CN204481688U CN204481688U CN201520246435.4U CN201520246435U CN204481688U CN 204481688 U CN204481688 U CN 204481688U CN 201520246435 U CN201520246435 U CN 201520246435U CN 204481688 U CN204481688 U CN 204481688U
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- circuit
- frequency converter
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- power
- buffer
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Abstract
The utility model relates to converter technique field, solving the existing heat that there is frequency converter produces uneven, to the technical problem that the work of frequency converter impacts, by providing a kind of frequency converter, comprise: cooling mechanism, power circuit and main control circuit, main control circuit comprises testing circuit, rectification circuit, filter circuit, inverter circuit, variable frequency drive and buffer circuit; Connect main control circuit place at power circuit output end and be connected with buffer circuit, in main control circuit, rectification circuit, filter circuit, inverter circuit connect successively, testing circuit is connected with the output of power circuit, testing circuit connects buffer circuit, buffer circuit is connected with variable frequency drive, and variable frequency drive connects inverter circuit; Power circuit connects cooling mechanism, and testing circuit place is connected with timer, and by setting-up time interval, power circuit is that cooling mechanism is powered, and then can effectively dispel the heat to the heat that frequency converter produces, and guarantees the technique effect that frequency converter normally works.
Description
Technical field
The utility model relates to converter technique field, particularly relates to a kind of frequency converter.
Background technology
During frequency converter apply converter technique be electronic technology, the electric control appliance of alternating current motor is controlled by the mode changing machine operation supply frequency, frequency converter close to the inner portion IGBT cut-off the voltage and the frequency that adjust out-put supply, there is provided required supply voltage according to the actual needs of motor, thus reach energy-conservation, the object of speed governing.
But sometimes, the voltage of access frequency converter can produce larger fluctuation, like this owing to carrying out work under different voltage, the heat produced also is different, therefore, the heat that there is frequency converter in prior art produces uneven, to the technical problem that the work of frequency converter impacts.
Utility model content
The utility model embodiment is by providing a kind of frequency converter, solving in prior art the heat that there is frequency converter produces uneven, to the technical problem that the work of frequency converter impacts, and then achieve and can effectively dispel the heat to the heat that frequency converter produces, guarantee the technique effect that frequency converter normally works.
The utility model embodiment provides a kind of frequency converter, comprise: cooling mechanism, power circuit and main control circuit, described main control circuit comprises testing circuit, rectification circuit, filter circuit, the inverter circuit of the input value change detecting power circuit input main control circuit, variable frequency drive and buffer circuit; Connect main control circuit place at power circuit output end and be connected with buffer circuit, wherein, in main control circuit, rectification circuit, filter circuit, inverter circuit connect successively, testing circuit is connected with the output of power circuit, testing circuit connects buffer circuit, buffer circuit is connected with variable frequency drive, and variable frequency drive connects inverter circuit; Power circuit connects cooling mechanism, and described testing circuit place is also connected with timer, and according to setting-up time interval, controlling power circuit is that cooling mechanism is powered.
Further, the output of described variable frequency drive connects motor.
Further, described buffer circuit adopts optically coupled isolator.
Adopt one or more technical scheme in the utility model, there is following beneficial effect:
Owing to adopting in the main control circuit in frequency converter, testing circuit is set, rectification circuit, filter circuit, inverter circuit variable frequency drive and buffer circuit, simultaneously, between whole main control circuit and power circuit, arrange buffer circuit, wherein, rectification circuit, filter circuit, inverter circuit connect successively, testing circuit connects the output of power circuit, testing circuit connects buffer circuit, and buffer circuit is connected with variable frequency drive, and variable frequency drive connects inverter circuit, power circuit connects cooling mechanism, described testing circuit place is also connected with timer, according to setting-up time interval, controlling power circuit is that cooling mechanism is powered, buffer circuit can avoid the excessive damage to frequency converter of input voltage, simultaneously, rectification and filtered power are delivered to load equipment by variable frequency drive by buffer circuit, solving in prior art the heat that there is frequency converter produces uneven, to the technical problem that the work of frequency converter impacts, and then achieve and can effectively dispel the heat to the heat that frequency converter produces, guarantee the technique effect that frequency converter normally works.
Accompanying drawing explanation
Fig. 1 is the module diagram of frequency converter in the utility model embodiment.
Embodiment
The utility model embodiment is by providing a kind of frequency converter, solving in prior art the heat that there is frequency converter produces uneven, to the technical problem that the work of frequency converter impacts, and then achieve and can effectively dispel the heat to the heat that frequency converter produces, guarantee the technique effect that frequency converter normally works.
Producing uneven to solve the heat that there is frequency converter in above-mentioned prior art, to the technical problem that the work of frequency converter impacts, below in conjunction with Figure of description and concrete execution mode, the technical solution of the utility model being described in detail.
A kind of frequency converter that the utility model embodiment provides, as shown in Figure 1, specifically comprise: cooling mechanism 101, power circuit 102 and main control circuit 103, this main control circuit 103 comprises testing circuit 1031, rectification circuit 1032, filter circuit 1033, inverter circuit 1034, variable frequency drive 1035 and buffer circuit 1036, wherein, testing circuit is inputted the input value change of main control circuit by power circuit for detecting, buffer circuit 104 is connected between power circuit 102, rectification circuit 1032 in main control circuit 103, filter circuit 1033, inverter circuit 1034 connects successively, testing circuit 1031 connects the output of this power circuit 102, and, this testing circuit 1031 connects buffer circuit 1036, buffer circuit 1036 connects variable frequency drive 1035 and connects, variable frequency drive 1035 connects inverter circuit 1034, this power circuit 102 connects cooling mechanism 101, testing circuit 1031 place also connection timer, and by setting-up time, power circuit 102 is powered for cooling mechanism 101, thus reduces the heat energy of this frequency converter internal work generation, improves the operating efficiency of frequency converter.
In a particular embodiment, this buffer circuit 104 is specially optical coupling isolator, these optically coupled isolator input and output have mutually isolated effect, electric signal transmission has the features such as one-way, thus there is good electrical isolation capabilities and antijamming capability, again because the input of optically coupled isolator belongs to the low resistance element of current mode work, there is very strong common mode inhibition capacity, therefore, in Long line transmission information, can signal to noise ratio be improved as terminal isolated component, effectively can meet the needs that frequency converter is isolated input and output.
Buffer circuit 1036 is connected at the output of testing circuit 1031, this buffer circuit 1036 suppresses the electric current and voltage exported, reduce the switching loss of device, thus when entering load equipment via variable frequency drive 1035, to the infringement reduced load equipment.This variable frequency drive 1035 output connects motor, thus can connect other load equipment.
In this main control circuit 103, power frequency supply is transformed into DC power supply by rectification circuit 1032.Direct current is changed into the square wave of different frequency, width, amplitude by inverter circuit 1034.
By this main control circuit 103, the electric power provided by power circuit 102 is controlled, effectively ensure that frequency converter builtin voltage stability, thus avoid external voltage fluctuations to cause bad impact to frequency converter and load equipment.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (3)
1. a frequency converter, it is characterized in that, comprise: cooling mechanism, power circuit and main control circuit, described main control circuit comprises testing circuit, rectification circuit, filter circuit, the inverter circuit of the input value change detecting power circuit input main control circuit, variable frequency drive and buffer circuit; Connect main control circuit place at power circuit output end and be connected with buffer circuit, wherein, in main control circuit, rectification circuit, filter circuit, inverter circuit connect successively, testing circuit is connected with the output of power circuit, testing circuit connects buffer circuit, buffer circuit is connected with variable frequency drive, and variable frequency drive connects inverter circuit; Power circuit connects cooling mechanism, and described testing circuit place is also connected with timer, and according to setting-up time interval, controlling power circuit is that cooling mechanism is powered.
2. frequency converter according to claim 1, is characterized in that, the output of described variable frequency drive connects motor.
3. frequency converter according to claim 1, is characterized in that, described buffer circuit adopts optical coupling isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246435.4U CN204481688U (en) | 2015-04-22 | 2015-04-22 | A kind of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246435.4U CN204481688U (en) | 2015-04-22 | 2015-04-22 | A kind of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481688U true CN204481688U (en) | 2015-07-15 |
Family
ID=53637460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520246435.4U Expired - Fee Related CN204481688U (en) | 2015-04-22 | 2015-04-22 | A kind of frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204481688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113907863A (en) * | 2021-10-25 | 2022-01-11 | 林裕民 | Plasma treatment device control circuit |
-
2015
- 2015-04-22 CN CN201520246435.4U patent/CN204481688U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113907863A (en) * | 2021-10-25 | 2022-01-11 | 林裕民 | Plasma treatment device control circuit |
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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: 20150715 Termination date: 20180422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |