CN201018417Y - Frequency converter suitable for intermediate frequency AC permanent-magnet generator - Google Patents
Frequency converter suitable for intermediate frequency AC permanent-magnet generator Download PDFInfo
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- CN201018417Y CN201018417Y CNU2007201235033U CN200720123503U CN201018417Y CN 201018417 Y CN201018417 Y CN 201018417Y CN U2007201235033 U CNU2007201235033 U CN U2007201235033U CN 200720123503 U CN200720123503 U CN 200720123503U CN 201018417 Y CN201018417 Y CN 201018417Y
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- frequency converter
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- magnet generator
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Abstract
The utility model discloses a frequency converter for an intermediate frequency AC permanent magnet generator; wherein the input and output ends of a full-bridge inverted circuit are respectively connected with the permanent magnet generator and a load circuit, the two ends of a voltage detection circuit are respectively connected with the output end of the full-bridge inverted circuit and a single chip machine in order to feed the output voltage of the frequency converter back to the single chip machine, a phase detection circuit detects out the phase of the three-phase alternating current and the phase after processed by the input circuit is sent into the single chip machine, and the output end of the single chip machine is connected with the full-bridge inverted circuit through a drive circuit. The working mode of the utility model is the switching of ''AC to AC''; compared with the traditional frequency converter of ''AC to DC to AC'', due to reducing the process of AC to DC, the frequency converter has the advantages of the smaller volume, the lighter weight, the higher efficiency and the lower cost, and thereby is more suitable for the popular consuming groups and more conductive to the promotion and application.
Description
Technical field
The utility model relates to a kind of frequency converter of permanent magnet generator, is specially adapted to the midfrequent AC permanent magnet generator.
Background technology
The compact internal combustion engine generating set has two kinds of traditional excitation generator group (claiming the conventional electric generators group again) and permanent magnet generator units, and is wherein in the majority with electric excitation generator.Electric excitation generator is directly exported the power frequency sinusoidal ac of 50Hz, regulates exciting current by voltage regulator, makes the effective value of output voltage keep stable.And permanent magnet generator belongs to frequency conversion generator, it is made up of generator and frequency converter two parts, generator mostly is the permanent magnetism mid-frequency motor, three-phase 400～800Hz alternating current of output, be for conversion into the single phase industrial frequence sinusoidal ac of 50Hz through frequency converter, simultaneously, frequency converter also will keep the stable of output voltage.Frequency converter commonly used comprises commutation capacitor filter circuit and full bridge inverter, the commutation capacitor filter circuit is used for changing the three-phase alternating current of generator output into direct current, and direct current finally makes output obtain the single-phase sinusoidal ac of 50Hz by full bridge inverter and LC low-pass filter circuit again.Therefore the working method of frequency converter is " AC-DC-AC " at present, though it has the advantages that volume is little, in light weight, efficient is high, but because the process of AC-DC is arranged, therefore, the cost of frequency converter can not reduce effectively, and in theory, its volume and efficient have further improved space.
The utility model content
At existing frequency converter working method is " AC-DC-AC " above shortcomings, and the purpose of this utility model provides the permanent magnet generator frequency converter of a kind of working method for " friendship-friendship ".
The technical solution of the utility model is achieved in that the frequency converter that is applicable to the midfrequent AC permanent magnet generator, it is characterized in that: frequency converter comprises full bridge inverter, single-chip microcomputer, phase detecting circuit and voltage detecting circuit, the two ends of described voltage detecting circuit are connected with single-chip microcomputer with the output of full bridge inverter respectively, be used for the output voltage of frequency converter is fed back to single-chip microcomputer, phase detecting circuit be used to detect permanent magnet generator output three-phase alternating current phase place and after input circuit is handled, send into single-chip microcomputer, the single-chip microcomputer output is connected with full bridge inverter by drive circuit.
Further, described full bridge inverter is two three-phase bridge rectification circuits being made up of 12 controllable silicons.
The working method of the related frequency converter of the utility model is the conversion of " friendship-friendship ", compare with traditional " AC-DC-AC " frequency converter, because " friendship-friendship " frequency conversion has reduced the process of AC-DC, therefore, the volume of frequency converter can be done forr a short time, weight is lighter, efficient is higher, cost is lower, be more suitable for mass consumption colony, be more conducive to promotion and application.
Description of drawings
The system of Fig. 1-frequency converter constitutes block diagram.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The purpose of this utility model is that the frequency conversion working method that becomes traditional frequency conversion device " AC-DC-AC " is " friendship-friendship ", and its structure is referring to Fig. 1, and Fig. 1 is that the system of frequency converter constitutes block diagram, is frequency converter in the frame of broken lines wherein.As can be seen, the utility model comprises full bridge inverter, single-chip microcomputer, phase detecting circuit, input circuit and voltage detecting circuit from the figure.The input of full bridge inverter is connected with load circuit with permanent magnet generator respectively with output, and the voltage detecting circuit two ends are connected with single-chip microcomputer with the output of full bridge inverter respectively, is used for the output voltage of frequency converter is fed back to single-chip microcomputer.Phase detecting circuit be used to detect permanent magnet generator output three-phase alternating current phase place and after input circuit is handled, send into single-chip microcomputer, the single-chip microcomputer output is connected with full bridge inverter by drive circuit.
The utility model operation principle is: permanent magnet generator is driven by gasoline engine, output three-phase midfrequent AC voltage, be connected in two three-phase bridge rectification circuits forming by 12 controllable silicons, order on request makes 12 controllable silicon conductings, is externally exported the sinusoidal ac of single-phase 50Hz by output.Phase detecting circuit in the control circuit comes out the phase-detection of the three-phase alternating current of permanent magnet generator output, after input circuit is handled, send into single-chip microcomputer, single-chip microcomputer order output trigger impulse in accordance with regulations, drive controllable silicon by No. 12 drive circuits, make 12 controllable silicon conductings successively, the three-phase medium frequency alternating current is transformed into the sinusoidal ac of single-phase 50Hz.Voltage detecting circuit can detect the actual value of output voltage, and feed back and send single-chip microcomputer back to, single-chip microcomputer is judged the scope whether output voltage departs from requirement according to feedback signal, if voltage is higher or on the low side, single-chip microcomputer is regulated the time of trigger impulse, makes output voltage be returned to right value.
The process of " friendship-friendship " frequency conversion conversion is: generator sends three-phase 400～800Hz alternating current, two controlled full bridge rectifiers of three-phase of frequency converter, and order is in accordance with regulations carried out rectification, and finally the output at frequency converter obtains the single-phase sinusoidal ac of 50Hz.
Claims (2)
1. be applicable to the frequency converter of midfrequent AC permanent magnet generator, comprise full bridge inverter, the input of full bridge inverter is connected with load with permanent magnet generator respectively with output, it is characterized in that: it also comprises single-chip microcomputer, phase detecting circuit and voltage detecting circuit, the two ends of described voltage detecting circuit are connected the output voltage that is used for frequency converter with the output of full bridge inverter respectively and feed back to single-chip microcomputer with single-chip microcomputer, phase detecting circuit be used to detect permanent magnet generator output three-phase alternating current phase place and after input circuit is handled, send into single-chip microcomputer, the single-chip microcomputer output is connected with full bridge inverter by drive circuit.
2. the frequency converter that is applicable to the midfrequent AC permanent magnet generator according to claim 1 is characterized in that: two three-phase bridge rectification circuits of described full bridge inverter for being made up of 12 controllable silicons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201235033U CN201018417Y (en) | 2007-02-05 | 2007-02-05 | Frequency converter suitable for intermediate frequency AC permanent-magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201235033U CN201018417Y (en) | 2007-02-05 | 2007-02-05 | Frequency converter suitable for intermediate frequency AC permanent-magnet generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201018417Y true CN201018417Y (en) | 2008-02-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201235033U Expired - Fee Related CN201018417Y (en) | 2007-02-05 | 2007-02-05 | Frequency converter suitable for intermediate frequency AC permanent-magnet generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201018417Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185399A (en) * | 2011-05-31 | 2011-09-14 | 陈维加 | Multipolar electric excitation frequency-conversion power generator |
| CN101610061B (en) * | 2009-07-24 | 2012-09-12 | 陈维加 | Variable frequency generator |
| CN103595317A (en) * | 2013-11-20 | 2014-02-19 | 上海广为焊接设备有限公司 | Energy-saving and stable intermediate-frequency gasoline inverter generator |
-
2007
- 2007-02-05 CN CNU2007201235033U patent/CN201018417Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610061B (en) * | 2009-07-24 | 2012-09-12 | 陈维加 | Variable frequency generator |
| CN102185399A (en) * | 2011-05-31 | 2011-09-14 | 陈维加 | Multipolar electric excitation frequency-conversion power generator |
| CN103595317A (en) * | 2013-11-20 | 2014-02-19 | 上海广为焊接设备有限公司 | Energy-saving and stable intermediate-frequency gasoline inverter generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: XIAN JIKAI ¬ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Fresh followed by Kay Number: 06 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Fresh followed by Kay Number: 06 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: XIAN JIKAI ¬ |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20130205 |