CN206602468U - A kind of Bipolar pulse power for Insulation monitoring - Google Patents
A kind of Bipolar pulse power for Insulation monitoring Download PDFInfo
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- CN206602468U CN206602468U CN201720321081.4U CN201720321081U CN206602468U CN 206602468 U CN206602468 U CN 206602468U CN 201720321081 U CN201720321081 U CN 201720321081U CN 206602468 U CN206602468 U CN 206602468U
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Abstract
The utility model discloses a kind of Bipolar pulse power for Insulation monitoring, circuit includes an adjustable DC power supply UDC, a current-limiting resistance RDC, four charge switch pipe, four road discharge switch bridge arms, N number of high frequency transformer and N number of capacitance energy storage modules；Described each capacitance energy storage module, including a single-phase rectifier bridge module, an electric capacity and two switching tubes；The switching tube of the circuit selects IGBT, and four road discharge switch bridge arms select the form that several IGBT connect, and each IGBT anti-parallel diodes.The utility model is had the advantages that modular integrated degree is high, realizes serial connection charge discharged in series, boosted using high frequency transformer, good square wave output characteristics can be realized for Insulation monitoring capicitive sample.
Description
Technical field
The utility model is related to a kind of Bipolar pulse power for Insulation monitoring, particularly belongs to pulsed-power industry.
Background technology
The waveform of frequency converter output has rapid increase/trailing edge, high repetition frequency and amplitude, to exhausted under the conditions of frequency conversion
The problem of marginal zone comes new, insulation premature failure happens occasionally, and reduces variable-frequency motor reliability of operation.Research shows, when inverse
Become device output have it is steep rise, the pulse voltage of trailing edge it is excessively electric because of impedance mismatch at connection cable and motor
When pressure exceedes the partial discharge inception voltage of variable-frequency motor insulation system, pwm pulse rises, falling edge produces shelf depreciation,
The quick cracking of motor insulation can be caused, this is the main cause of variable-frequency motor failure of insulation.Due to bipolarity symmetrical square wave pulse
Pulse amplitude, rising and falling time, FREQUENCY CONTROL it is convenient, so carrying out insulating materials inspection using Bipolar pulse power
Survey, the standardization for being easy to high-frequency and high-voltage impulse power supply and Insulation monitoring standard to design.
Pulse power technology is based on Pulse Power Techniques and present generation power supplies technology, its power-supply system it is general by primary source,
The part such as intermediate energy storage link and pulse shaping system is constituted.Wherein, the intermediate energy storage link of high-voltage pulse power source presses energy storage side
Formula difference mainly has capacitance energy storage type and inductive type two ways.Inductance specific capacitance energy storage density is big, but due to discharge wave
Shape vibration is big, and is not likely to produce long period, the square-wave pulse of steep rising edge；Capacitance energy storage discharge waveform is stable, controlling it is good and
It is applicable to the load of capacitive or high impedance load.Therefore the mode of capacitance energy storage is usually selected in pulse shaping part.
The content of the invention
The utility model proposes a kind of Bipolar pulse power for Insulation monitoring, the Bipolar pulse power includes
One adjustable DC power supply UDC, a current-limiting resistance RDC, four charge switch pipe, four road discharge switch bridge arms, N number of high frequencies become
Depressor and N number of capacitance energy storage module；Described each capacitance energy storage module, including single-phase rectifier bridge module, an electric capacity
With two switching tubes；Described discharge switch bridge arm is composed in series by several IGBT, and each IGBT reverse parallel connections two
Pole pipe.The utility model had that modular integrated degree is high, realize serial connection charge discharged in series, boosted using high frequency transformer,
The advantages of good square wave output characteristics being realized for Insulation monitoring capicitive sample.
The utility model proposes a kind of Bipolar pulse power for Insulation monitoring, adjustable DC power supply UDCOne end
With current-limiting resistance RDCOne end connection, current-limiting resistance RDCThe other end and charge switch pipe Tc1And Tc4Colelctor electrode connection；Charging
Switch transistor Tc1Emitter stage respectively with charge switch pipe Tc2Colelctor electrode and high frequency transformer M1One end connection of primary side；High frequency becomes
Depressor M1The other end of primary side and high frequency transformer M2One end connection of primary side, high frequency transformer M2The other end and high frequency of primary side
Transformer M3One end connection of primary side, by that analogy, until high frequency transformer MN-1The other end of primary side and high frequency transformer MNIt is former
One end connection on side, all high frequency transformer primary sides are forward together in series；Charge switch pipe Tc4Emitter stage respectively with filling
Electric switch pipe Tc3Colelctor electrode and high frequency transformer MNThe other end connection of primary side；Adjustable DC power supply UDCThe other end and charging
Switch transistor Tc2And Tc4Emitter stage connection；
High frequency transformer M1One end of secondary is connected with the second connection end of the first capacitance energy storage module, high frequency transformer M1
The other end of secondary is connected with the 3rd connection end of the first capacitance energy storage module；High frequency transformer M2One end of secondary and the second electricity
Hold the second connection end connection of energy-storage module, high frequency transformer M23rd company of the other end of secondary and the second capacitance energy storage module
Connect end connection；By that analogy, all high frequency transformer secondary are parallel to the second He of each capacitance energy storage module respectively
3rd connection end, until high frequency transformer MNOne end of secondary is connected with the second connection end of N capacitance energy storage modules, and high frequency becomes
Depressor MNThe other end of secondary is connected with the 3rd connection end of N capacitance energy storage modules；
First connection end of the first capacitance energy storage module respectively with discharge switch bridge arm Td1And Td4One end connection；Electric discharge
Switch bridge arm Td1The other end respectively with discharge switch bridge arm Td2One end and load one end connection；Discharge switch bridge arm Td4
The other end respectively with discharge switch bridge arm Td3One end and load the other end connection；The 4th of first capacitance energy storage module connects
Connect end to be connected with the first connection end of the second capacitance energy storage module, the 4th connection end and the 3rd electric capacity of the second capacitance energy storage module
The first connection end connection of energy-storage module, by that analogy, until the 4th connection end and the N electric capacity of N-1 capacitance energy storage modules
The first connection end connection of energy-storage module, the 4th connection end of N capacitance energy storage modules and discharge switch bridge arm Td2、Td3It is another
One end is connected with the earth；
N number of capacitance energy storage module of above-mentioned Bipolar pulse power, wherein each capacitance energy storage module includes single-phase rectifier
Module, electric capacity C, switch transistor Ta, switch transistor Tb；One end of described MDQ AC is used as capacitance energy storage module
Second connection end；The other end of MDQ AC as capacitance energy storage module the 3rd connection end；Single-phase rectifier mould
One end of block DC side one end respectively with electric capacity C and switch transistor TbEmitter stage connection, be used as the 4th of capacitance energy storage module the
Connection end；The other end and switch transistor T of the other end of MDQ DC side respectively with electric capacity CaColelctor electrode connection, open
Close pipe TaEmitter stage and switch transistor TbColelctor electrode connection, be used as the first connection end of capacitance energy storage module.
The utility model proposes a kind of Bipolar pulse power for Insulation monitoring, its advantage is that storage capacitor boosts
Circuit carries out isolation boosting using high frequency transformer；It is two independent loops to realize charge circuit and discharge loop；By putting
Tail after electricity terminates cuts switch-control strategy, solves the pulse stretching phenomenon of capacitive insulated article.
Brief description of the drawings
Fig. 1 be the utility model proposes the Bipolar pulse power for Insulation monitoring circuit structure diagram.
Fig. 2 be Fig. 1 shown in Bipolar pulse power in capacitance energy storage module circuit structure diagram.
Embodiment
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than indicate or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic；Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature；In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or can be integrally machine
Tool is connected or electrical connection can be joined directly together, and can also be indirectly connected to by intermediary, can is two elements
Internal connection or the interaction relationship of two elements；For the ordinary skill in the art, can be according to specific
Situation understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact；Moreover, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature；Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example；In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example；Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually；Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
The utility model proposes a kind of Bipolar pulse power for Insulation monitoring, adjustable DC power supply UDCOne end
With current-limiting resistance RDCOne end connection, current-limiting resistance RDCThe other end and charge switch pipe Tc1And Tc4Colelctor electrode connection；Charging
Switch transistor Tc1Emitter stage respectively with charge switch pipe Tc2Colelctor electrode and high frequency transformer M1One end connection of primary side；High frequency becomes
Depressor M1The other end of primary side and high frequency transformer M2One end connection of primary side, high frequency transformer M2The other end and high frequency of primary side
Transformer M3One end connection of primary side, by that analogy, until high frequency transformer MN-1The other end of primary side and high frequency transformer MNIt is former
One end connection on side, all high frequency transformer primary sides are forward together in series；Charge switch pipe Tc4Emitter stage respectively with filling
Electric switch pipe Tc3Colelctor electrode and high frequency transformer MNThe other end connection of primary side；Adjustable DC power supply UDCThe other end and charging
Switch transistor Tc2And Tc4Emitter stage connection；
High frequency transformer M1One end of secondary is connected with the second connection end of the first capacitance energy storage module, high frequency transformer M1
The other end of secondary is connected with the 3rd connection end of the first capacitance energy storage module；High frequency transformer M2One end of secondary and the second electricity
Hold the second connection end connection of energy-storage module, high frequency transformer M23rd company of the other end of secondary and the second capacitance energy storage module
Connect end connection；By that analogy, all high frequency transformer secondary are parallel to the second He of each capacitance energy storage module respectively
3rd connection end, until high frequency transformer MNOne end of secondary is connected with the second connection end of N capacitance energy storage modules, and high frequency becomes
Depressor MNThe other end of secondary is connected with the 3rd connection end of N capacitance energy storage modules；
First connection end of the first capacitance energy storage module respectively with discharge switch bridge arm Td1And Td4One end connection；Electric discharge
Switch bridge arm Td1The other end respectively with discharge switch bridge arm Td2One end and load one end connection；Discharge switch bridge arm Td4
The other end respectively with discharge switch bridge arm Td3One end and load the other end connection；The 4th of first capacitance energy storage module connects
Connect end to be connected with the first connection end of the second capacitance energy storage module, the 4th connection end and the 3rd electric capacity of the second capacitance energy storage module
The first connection end connection of energy-storage module, by that analogy, until the 4th connection end and the N electric capacity of N-1 capacitance energy storage modules
The first connection end connection of energy-storage module, the 4th connection end of N capacitance energy storage modules and discharge switch bridge arm Td2、Td3It is another
One end is connected with the earth；
N number of capacitance energy storage module of above-mentioned Bipolar pulse power, wherein each capacitance energy storage module includes single-phase rectifier
Module, electric capacity C, switch transistor Ta, switch transistor Tb；One end of described MDQ AC is used as capacitance energy storage module
Second connection end；The other end of MDQ AC as capacitance energy storage module the 3rd connection end；Single-phase rectifier mould
One end of block DC side one end respectively with electric capacity C and switch transistor TbEmitter stage connection, be used as the 4th of capacitance energy storage module the
Connection end；The other end and switch transistor T of the other end of MDQ DC side respectively with electric capacity CaColelctor electrode connection, open
Close pipe TaEmitter stage and switch transistor TbColelctor electrode connection, be used as the first connection end of capacitance energy storage module.
Below in conjunction with accompanying drawing 1 and accompanying drawing 2, by illustrating corresponding control strategy, be discussed in detail the utility model proposes
For the course of work of the Bipolar pulse power circuit of Insulation monitoring, five working stages can be divided into.
First stage, adjustable DC power supply UDCTo each energy storage capacitor in series charging stage.
Pass through alternate conduction charge switch pipe Tc1、Tc3With charge switch pipe Tc2、Tc4, adjustable DC power supply UDCVoltage it is inverse
It is changed into PWM high frequency square waves, then after being boosted via high frequency transformer, corresponding each capacitance energy storage mould is given by single-phase rectifier bridge module
The electric capacity of block is charged.
Second stage, each storage capacitor exports the stage to the positive pulse of load.
In pulse output procedure, charge switch pipe T is turned offc1、Tc2、Tc3、Tc4, triggering and conducting each capacitance energy storage module opens
Close pipe TaWith discharge switch bridge arm Td1、Td3, the electric capacity progress discharged in series of N number of capacitance energy storage module, positive arteries and veins of the realization to load
Punching output.
Phase III, is cut to the tail after positive pulse end of output the stage.
After positive pulse end of output, the switch transistor T of N number of capacitance energy storage module is turned offa, continue to make discharge switch bridge arm Td1
And Td3Tend to remain on, then the switch transistor T of the N number of capacitance energy storage module of triggering and conductingb, a Low ESR is provided to load
Loop, makes load repid discharge, and realization cuts operation to the tail after positive pulse end of output.
Fourth stage, each storage capacitor exports the stage to the negative pulse of load.
Turn off discharge switch bridge arm Td1、Td3, while the switch transistor T of the N number of capacitance energy storage module of triggering and conductinga, by certain
Dead time, then triggering and conducting discharge switch bridge arm Td2And Td4, the electric capacity progress discharged in series of N number of capacitance energy storage module, realization
Negative pulse output to load.
In 5th stage, is cut to the tail after negative pulse end of output the stage.
After negative pulse end of output, the switch transistor T of N number of capacitance energy storage module is turned offa, continue to make discharge switch bridge arm Td2
And Td4Tend to remain on, then the switch transistor T of the N number of capacitance energy storage module of triggering and conductingb, a Low ESR is provided to load
Loop, makes load repid discharge, and realization cuts operation to the tail after negative pulse end of output.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (1)
1. a kind of Bipolar pulse power for Insulation monitoring, it is characterised in that the Bipolar pulse power is adjustable including one
Dc source UDC, a current-limiting resistance RDC, four charge switch pipes, four road discharge switch bridge arms, N number of high frequency transformer and N number of
Capacitance energy storage module；Described each capacitance energy storage module, including a single-phase rectifier bridge module, an electric capacity and two switches
Pipe；Described discharge switch bridge arm is composed in series by several IGBT, and each IGBT anti-parallel diodes；
Described adjustable DC power supply UDCOne end and current-limiting resistance RDCOne end connection, current-limiting resistance RDCThe other end with filling
Electric switch pipe Tc1And Tc4Colelctor electrode connection；Charge switch pipe Tc1Emitter stage respectively with charge switch pipe Tc2Colelctor electrode and
High frequency transformer M1One end connection of primary side；High frequency transformer M1The other end of primary side and high frequency transformer M2One end of primary side connects
Connect, high frequency transformer M2The other end of primary side and high frequency transformer M3One end connection of primary side, by that analogy, until high frequency transformation
Device MN-1The other end of primary side and high frequency transformer MNOne end connection of primary side, all high frequency transformer primary sides are forward connected
Get up；Charge switch pipe Tc4Emitter stage respectively with charge switch pipe Tc3Colelctor electrode and high frequency transformer MNThe other end of primary side
Connection；Adjustable DC power supply UDCThe other end and charge switch pipe Tc2And Tc4Emitter stage connection；
High frequency transformer M1One end of secondary is connected with the second connection end of the first capacitance energy storage module, high frequency transformer M1Secondary
The other end be connected with the 3rd connection end of the first capacitance energy storage module；High frequency transformer M2Stored up with the second electric capacity one end of secondary
The second connection end connection of energy module, high frequency transformer M23rd connection end of the other end of secondary and the second capacitance energy storage module
Connection；By that analogy, all high frequency transformer secondary are parallel to the second and the 3rd of each capacitance energy storage module respectively
Connection end, until high frequency transformer MNOne end of secondary is connected with the second connection end of N capacitance energy storage modules, high frequency transformer
MNThe other end of secondary is connected with the 3rd connection end of N capacitance energy storage modules；
First connection end of the first capacitance energy storage module respectively with discharge switch bridge arm Td1And Td4One end connection；Discharge switch bridge
Arm Td1The other end respectively with discharge switch bridge arm Td2One end and load one end connection；Discharge switch bridge arm Td4It is another
End respectively with discharge switch bridge arm Td3One end and load the other end connection；4th connection end of the first capacitance energy storage module with
The first connection end connection of second capacitance energy storage module, the 4th connection end and the 3rd capacitance energy storage mould of the second capacitance energy storage module
The first connection end connection of block, by that analogy, until the 4th connection end and the N capacitance energy storage moulds of N-1 capacitance energy storage modules
The first connection end connection of block, the 4th connection end of N capacitance energy storage modules and discharge switch bridge arm Td2、Td3The other end with
The earth is connected；
Described N number of capacitance energy storage module, each capacitance energy storage module includes MDQ, electric capacity C, switch transistor Ta, switch
Pipe Tb；One end of described MDQ AC as capacitance energy storage module the second connection end；MDQ
The other end of AC as capacitance energy storage module the 3rd connection end；One end of MDQ DC side respectively with electric capacity
C one end and switch transistor TbEmitter stage connection, be used as the 4th connection end of capacitance energy storage module；MDQ DC side
The other end other end and switch transistor T respectively with electric capacity CaColelctor electrode connection, switch transistor TaEmitter stage and switch transistor Tb's
Colelctor electrode is connected, and is used as the first connection end of capacitance energy storage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720321081.4U CN206602468U (en) | 2017-03-29 | 2017-03-29 | A kind of Bipolar pulse power for Insulation monitoring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720321081.4U CN206602468U (en) | 2017-03-29 | 2017-03-29 | A kind of Bipolar pulse power for Insulation monitoring |
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| CN206602468U true CN206602468U (en) | 2017-10-31 |
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| CN201720321081.4U Expired - Fee Related CN206602468U (en) | 2017-03-29 | 2017-03-29 | A kind of Bipolar pulse power for Insulation monitoring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581161A (en) * | 2018-12-18 | 2019-04-05 | 西安交通大学 | A kind of 10kV transformer Portable PD On-Line detection system based on oscillation wave |
| WO2019105242A1 (en) * | 2017-11-29 | 2019-06-06 | 苏州博思得电气有限公司 | Pulse voltage generation device, method, and controller |
-
2017
- 2017-03-29 CN CN201720321081.4U patent/CN206602468U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019105242A1 (en) * | 2017-11-29 | 2019-06-06 | 苏州博思得电气有限公司 | Pulse voltage generation device, method, and controller |
| JP2021505120A (en) * | 2017-11-29 | 2021-02-15 | ▲蘇▼州博思得▲電▼▲気▼有限公司 | Pulse voltage generator, method and controller |
| US11146250B2 (en) | 2017-11-29 | 2021-10-12 | Suzhou Powersite Electric Co., Ltd. | Pulse voltage generation device, method, and controller |
| CN109581161A (en) * | 2018-12-18 | 2019-04-05 | 西安交通大学 | A kind of 10kV transformer Portable PD On-Line detection system based on oscillation wave |
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Granted publication date: 20171031 Termination date: 20180329 |