CN108459183A - Frequency tripling induced voltage generator - Google Patents
Frequency tripling induced voltage generator Download PDFInfo
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- CN108459183A CN108459183A CN201710088726.9A CN201710088726A CN108459183A CN 108459183 A CN108459183 A CN 108459183A CN 201710088726 A CN201710088726 A CN 201710088726A CN 108459183 A CN108459183 A CN 108459183A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- General Physics & Mathematics (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The present invention relates to frequency tripling induced voltage generators, belong to voltage generator technical field；The conversion circuit is connected with each other with output filter circuit；The output filter circuit is connect with power inverting unit；The power inverting unit is connect with transformation and filter unit；The PWM synthesis units are connect with power inverting unit；The PID control unit cooperates with PWM synthesis units；The transformation and filter unit are connect with output unit and measurement feedback unit respectively；The measurement feedback unit is connect with PID control unit；The main control unit, voltage control unit cooperate；The frequency multiplication induced over voltage withstand test that split-phase is carried out to power transformer, makees frequency multiplication induced over voltage withstand test to the electric product of other line of induction ring types, is widely used in and makees frequency multiplication induced over voltage withstand test to voltage transformer.
Description
Technical field
The present invention relates to frequency tripling induced voltage generators, belong to voltage generator technical field.
Background technology
According to government test standard, to power transformer and the maximum work of substantially 2-3 times of voltage transformer induced test voltage
Make phase voltage consideration.It is well known that transformer, under rated frequency, rated voltage, iron core is close to saturation, if being existed with power frequency supply
Subject transformer winding both ends are applied more than the test voltage of rated voltage, then open-circuit excitation electric current can sharply increase, and reach not
Admissible degree is can be seen that from the relational expression of induced potential in order to be applied more than the test voltage of rated voltage, and not
Make core sataration, the method for increasing supply frequency can be used, it is necessary to more than frequency multiplication power source generator；Three times frequency generator is used for
The test items such as power transformer, voltage transformer apply power frequency high voltage examination other than being carried out to the major insulation of all-insulation transformer
Outside testing, but also induction high-potting is carried out to the minor insulation of transformer and the major insulation of semi-insulating transformer.
Transformer, transformer induced pressure test are an important tests for examining the product whether to meet national standard.
The minor insulation induced test of the interlayer, turn-to-turn, section and phase insulation of winding is whether satisfactory test winding one be important
Project.In order to improve winding test voltage, so that the iron core of transformer or mutual inductor is not supersaturation again leads to exciting current mistake
Greatly, therefore test frequency is made to improve, generally 100Hz-400Hz.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of simple in structure, reasonable design makes
With convenient frequency tripling induced voltage generator.
To achieve the above object, the technical solution adopted by the present invention is：It includes input unit, rectification circuit, conversion electricity
Road, output filter circuit, power inverting unit, transformation and filter unit, PID control unit, measure feedback at PWM synthesis units
Unit, output unit, Waveform composition unit, main control unit, voltage control unit；The input unit connects with rectification circuit
It connects；The rectification circuit cooperates with conversion circuit；The conversion circuit is connected with each other with output filter circuit；The output
Filter circuit is connect with power inverting unit；The power inverting unit is connect with transformation and filter unit；The PWM synthesis is single
Member is connect with power inverting unit；The PID control unit cooperates with PWM synthesis units；The transformation and filter unit
It is connect respectively with output unit and measurement feedback unit；The measurement feedback unit is connect with PID control unit；The main control
Unit, voltage control unit cooperate；The main control unit is connect with Waveform composition unit；The Waveform composition unit with
PID control unit connects.
Preferably, the PWM synthesis units are connect with driving circuit；The driving circuit is connect with conversion circuit.
Preferably, being equipped with feedback circuit unit in the Waveform composition unit；The feedback circuit unit respectively with work(
Rate table, ammeter, frequency meter, voltmeter connection.
Preferably, being equipped with triangle wave circuit in the PWM synthesis units；The triangle wave circuit and crystal oscillation circuit
Connection；The oscillating circuit is connect with programmable circuit.
Preferably, the PWM synthesis units are connect with PWM output units；Overcurrent is equipped in the PWM output units
Detecting unit, excess temperature detecting unit, power-off detecting unit.
The operation principle of the present invention：As soon as when a sinusoidal voltage U1 is added in primary coil both ends, there is friendship in conducting wire
Time-dependent current I1 simultaneously generates alternating flux ф 1, it passes through primary coil and secondary coil to form the magnetic circuit being closed along iron core；Secondary
Mutual inductance potential U2 is induced in grade coil, while ф 1 can also induce the direction of self-induced e.m.f an E1, E1 on primary coil
Mutually amplitude is close instead with the directions institute making alive U1, to limit the size of I1.
With the above structure, the present invention has the beneficial effect that：Frequency tripling induced voltage generator of the present invention, to electricity
Power transformer carries out the frequency multiplication induced over voltage withstand test of split-phase, makees the examination of frequency multiplication inducting-voltage proof to the electric product of other line of induction ring types
It tests, is widely used in and frequency multiplication induced over voltage withstand test made to voltage transformer, the present invention has simple in structure, and setting is reasonable, is fabricated to
This low advantage.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the present invention；
Reference sign：
Input unit 1, rectification circuit 2, conversion circuit 3, output filter circuit 4, power inverting unit 5, transformation and filtering
Unit 6, PID control unit 8, measures feedback unit 9, output unit 10, Waveform composition unit 11, master control at PWM synthesis units 7
Unit 12 processed, voltage control unit 13.
Specific implementation mode
The present invention will be further described below with reference to the drawings.
Referring to as shown in Figure 1, it includes input unit 1, rectification circuit 2, conversion circuit 3, output filter circuit 4, power
Inversion unit 5, transformation and filter unit 6, PWM synthesis units 7, PID control unit 8, measure feedback unit 9, output unit 10,
Waveform composition unit 11, main control unit 12, voltage control unit 13；The input unit 1 is connect with rectification circuit 2；It is described
Rectification circuit 2 cooperates with conversion circuit 3；The conversion circuit 3 is connected with each other with output filter circuit 4；The output filter
Wave circuit 4 is connect with power inverting unit 5；The power inverting unit 5 is connect with transformation and filter unit 6；The PWM synthesis
Unit 7 is connect with power inverting unit 5；The PID control unit 8 cooperates with PWM synthesis units 7；The transformation and filter
Wave unit 6 is connect with output unit 10 and measurement feedback unit 9 respectively；The measurement feedback unit 9 connects with PID control unit 8
It connects；The main control unit 12, voltage control unit 13 cooperate；The main control unit 12 connects with Waveform composition unit 11
It connects；The Waveform composition unit 11 is connect with PID control unit 8.
Wherein, the PWM synthesis units 7 are connect with driving circuit；The driving circuit is connect with conversion circuit 3；It is described
Feedback circuit unit is equipped in Waveform composition unit 11；The feedback circuit unit respectively with power meter, ammeter, frequency meter,
Voltmeter connects；Triangle wave circuit is equipped in the PWM synthesis units 7；The triangle wave circuit is connect with crystal oscillation circuit；
The oscillating circuit is connect with programmable circuit；The PWM synthesis units 7 are connect with PWM output units；The PWM outputs are single
Overcurrent detecting unit, excess temperature detecting unit, power-off detecting unit are equipped in member.
The operation principle of the present invention：As soon as when a sinusoidal voltage U1 is added in primary coil both ends, there is friendship in conducting wire
Time-dependent current I1 simultaneously generates alternating flux ф 1, it passes through primary coil and secondary coil to form the magnetic circuit being closed along iron core；Secondary
Mutual inductance potential U2 is induced in grade coil, while ф 1 can also induce the direction of self-induced e.m.f an E1, E1 on primary coil
Mutually amplitude is close instead with the directions institute making alive U1, to limit the size of I1.
With the above structure, the present invention has the beneficial effect that：Frequency tripling induced voltage generator of the present invention, to electricity
Power transformer carries out the frequency multiplication induced over voltage withstand test of split-phase, makees the examination of frequency multiplication inducting-voltage proof to the electric product of other line of induction ring types
It tests, is widely used in and frequency multiplication induced over voltage withstand test made to voltage transformer, the present invention has simple in structure, and setting is reasonable, is fabricated to
This low advantage.
The above is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (6)
1. frequency tripling induced voltage generator, it is characterised in that：It includes input unit, rectification circuit, conversion circuit, output filter
Wave circuit, power inverting unit, transformation and filter unit, PID control unit, measure feedback unit, output at PWM synthesis units
Unit, Waveform composition unit, main control unit, voltage control unit；The input unit is connect with rectification circuit；The rectification
Circuit cooperates with conversion circuit；The conversion circuit is connected with each other with output filter circuit；The output filter circuit with
Power inverting unit connects；The power inverting unit is connect with transformation and filter unit；The PWM synthesis units and power are inverse
Become unit connection；The PID control unit cooperates with PWM synthesis units；The transformation and filter unit respectively with output
Unit is connected with feedback unit is measured；The measurement feedback unit is connect with PID control unit；The main control unit, voltage
Control unit cooperates；The main control unit is connect with Waveform composition unit；The Waveform composition unit and PID control list
Member connection.
2. frequency tripling induced voltage generator according to claim 1, it is characterised in that：The PWM synthesis units and drive
Dynamic circuit connection；The driving circuit is connect with conversion circuit.
3. frequency tripling induced voltage generator according to claim 1, it is characterised in that：It is set in the Waveform composition unit
There is feedback circuit unit；The feedback circuit unit is connect with power meter, ammeter, frequency meter, voltmeter respectively.
4. frequency tripling induced voltage generator according to claim 1, it is characterised in that：It is set in the PWM synthesis units
There is triangle wave circuit；The triangle wave circuit is connect with crystal oscillation circuit；The oscillating circuit is connect with programmable circuit.
5. frequency tripling induced voltage generator according to claim 1, it is characterised in that：The PWM synthesis units and PWM
Output unit connects；Overcurrent detecting unit, excess temperature detecting unit, power-off detecting unit are equipped in the PWM output units.
6. frequency tripling induced voltage generator according to claim 1, it is characterised in that：As a sinusoidal voltage U1
Just there is alternating current I1 when being added in primary coil both ends, in conducting wire and generate alternating flux ф 1, it passes through primary line along iron core
Circle and secondary coil form the magnetic circuit being closed；Mutual inductance potential U2 is induced in secondary coil, while ф 1 also can be in primary coil
On induce the direction of self-induced e.m.f an E1, E1 mutually amplitude be close instead with the directions institute making alive U1, to limit I1's
Size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088726.9A CN108459183A (en) | 2017-02-20 | 2017-02-20 | Frequency tripling induced voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088726.9A CN108459183A (en) | 2017-02-20 | 2017-02-20 | Frequency tripling induced voltage generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108459183A true CN108459183A (en) | 2018-08-28 |
Family
ID=63221967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710088726.9A Pending CN108459183A (en) | 2017-02-20 | 2017-02-20 | Frequency tripling induced voltage generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108459183A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204807678U (en) * | 2015-07-23 | 2015-11-25 | 嘉兴伏尔电子科技有限公司 | Motor type test system |
| CN205901603U (en) * | 2016-07-29 | 2017-01-18 | 深圳市贝岭检测技术服务有限公司 | Multi -functional variable frequency power supply |
-
2017
- 2017-02-20 CN CN201710088726.9A patent/CN108459183A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204807678U (en) * | 2015-07-23 | 2015-11-25 | 嘉兴伏尔电子科技有限公司 | Motor type test system |
| CN205901603U (en) * | 2016-07-29 | 2017-01-18 | 深圳市贝岭检测技术服务有限公司 | Multi -functional variable frequency power supply |
Non-Patent Citations (3)
| Title |
|---|
| 刘长亮: "无人机地面变频电源的输出质量控制", 《电气技术》 * |
| 宋强等主编: "《电机与拖动基础》", 31 December 2016, 西安交通大学出版社 * |
| 王浚龙: "关于用大功率变频变压电源作为船舶岸电电站的研究和应用", 《中国修船》 * |
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Application publication date: 20180828 |