CN206962715U - The frequency converter that a kind of new major loop is formed - Google Patents
The frequency converter that a kind of new major loop is formed Download PDFInfo
- Publication number
- CN206962715U CN206962715U CN201720880832.6U CN201720880832U CN206962715U CN 206962715 U CN206962715 U CN 206962715U CN 201720880832 U CN201720880832 U CN 201720880832U CN 206962715 U CN206962715 U CN 206962715U
- Authority
- CN
- China
- Prior art keywords
- igbt
- diode
- frequency converter
- contactor
- module
- 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
Links
- 238000001914 filtration Methods 0.000 claims abstract description 28
- 230000001276 controlling effect Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 11
- 230000018199 S phase Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Landscapes
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
The utility model discloses the frequency converter that a kind of new major loop is formed, to solve the problems, such as that existing main circuit of frequency converter can cause frequency converter not work because being damaged during charge circuit.The major loop includes：Rectification module, for industrial-frequency alternating current to be changed into direct current；Charge filtration module, the rectification module is connected, for stablizing the direct current；Inversion output module, the charging filtration module is connected, for the direct current to be changed into the alternating current of size and frequency-adjustable；Master control power module, the inversion output module is connected, for regulating and controlling to major loop.Using the utility model, the problem of causing frequency converter not work due to charge circuit device failure can be eliminated.
Description
Technical field
It the utility model is related to converter technology field, more particularly to the frequency converter that a kind of new major loop is formed.
Background technology
Frequency converter is as a kind of RHVC, by its superior control performance and energy-saving effect so that it is in electricity
Power electronics, Electrified Transmission, it is used widely in Industry Control.With petrochemical industry, textile printing and dyeing, metallurgical papermaking, building building
Continuous improvement of the industries such as space to frequency converter performance requirement, high controllability, practicality and reliability turn into weighs frequency converter
One big index of energy.
At present, by Design of Inverter obtain more small and exquisite exquisiteness, be easily installed, quality it is more reliable and more stable be always all causes
Researcher and user concern of the power in IGBT.The frequency converter of compact causes in the switch board of same size
More set can be installed to equip, can further reduce cost, make product competitive.
Traditional converter circuit is serially connected in commutating circuit using charge circuit together with inversion circuit.In charge circuit
After device failure frequency converter can be caused not work.
Publication No. CN104578815A patent provides a kind of main circuit of frequency converter structure, including is integrated in a cabinet
Rectifier, electrochemical capacitor, charging resistor, inverter, stack bus bar, D.C. contactor and power driving circuit, frequency converter master
The input terminal of loop structure is arranged at the one side of cabinet, and the outlet terminal of main circuit of frequency converter structure is arranged at relative to described
The another side of cabinet simultaneously.The main circuit of frequency converter that the one side of cabinet is all located at relative to traditional end of incoming cables and leading-out terminal is set
Meter mode, by simultaneously entering, the inlet-outlet line mode that opposite side goes out, after the D.C. contactor and charging resistor parallel connection again with electricity
Solution electric capacity series connection is connected between dc bus P/N together, and dc bus uses the connected mode of stack bus bar, shortens direct current mother
The cable run distance of line, make dc bus symmetrical to the distance between each IGBT module of inverter, reduce the spuious of loop
Inductance, frequency converter volume is reduced, simplify the connected mode of internal components, improve reliability and integrated level.The invention is being filled
Frequency converter cisco unity malfunction when electrical circuit device failure.
The content of the invention
The technical problems to be solved in the utility model purpose is to provide the frequency converter that a kind of new major loop is formed, to
Solve the problems, such as that existing main circuit of frequency converter can cause frequency converter not work because being damaged during charge circuit.
To achieve these goals, the technical solution adopted in the utility model is：
The frequency converter that a kind of new major loop is formed, including：
Rectification module, for industrial-frequency alternating current to be changed into direct current；
Charge filtration module, the rectification module is connected, for stablizing the direct current；
Inversion output module, the charging filtration module is connected, for the direct current being changed into size and frequency can
The alternating current of tune；
Master control power module, the inversion output module is connected, for regulating and controlling to major loop.
Further, the charging filtration module is made up of live part and filtering part；
The live part be used for powered on moment to electric capacity charge and after charging by charging resistor short circuit with
Complete the upper electricity of whole frequency converter；
The filtering part is used for gentle and stablizes the direct current.
Further, the rectification module and the charging filtration module and inversion output module is connect.
Further, the rectification module includes three phase mains and three-phase commutation bridge；
The three-phase commutation bridge includes the first diode, the second diode, the 3rd diode, the 4th diode, and the five or two
Pole pipe, the 6th diode；
First diode, the 3rd diode, the 5th diode common cathode；Second diode, institute
State the 4th diode, the 6th diode common-anode；Negative and positive between the common cathode diode and the co-anode diode
Dock and connect R phases, S-phase and the T-phase of three phase mains respectively.
Further, the charging filtration module is by charging resistor, first contactor, second contactor, the 3rd contactor,
First electric capacity and the second electric capacity composition；
One end of the charging resistor simultaneously connects the negative electrode of the 3rd diode and one end of the first contactor；It is described
The other end of charging resistor and the positive pole for connecing the first electric capacity, the other end of the first contactor and the one of the second contactor
End；The negative pole of first electric capacity and the positive pole for connecing second electric capacity, the other end of the second contactor and the described 3rd
One end of contactor；The negative pole of second electric capacity and connect the 6th diode anode and the 3rd contactor it is another
End.
Further, the inversion output module is by the first IGBT, the 2nd IGBT, the 3rd IGBT, the 4th IGBT, the 5th
IGBT, the 6th IGBT, the first feedback diode, the second feedback diode, the 3rd feedback diode, the 4th feedback diode, the
Five feedback diodes and the 6th feedback diode composition；
First IGBT is in parallel with first feedback diode, the 2nd IGBT and second feedback diode
Parallel connection, the 3rd IGBT is in parallel with the 3rd feedback diode, and the 4th IGBT and the 4th feedback diode are simultaneously
Connection, the 5th IGBT is in parallel with the 5th feedback diode, and the 6th IGBT is in parallel with the 6th feedback diode；
One end of first IGBT simultaneously connects one end of the 3rd IGBT and one end of the 5th IGBT；Described second
IGBT one end simultaneously connects one end of the 4th IGBT and one end of the 6th IGBT；The other end of first IGBT and institute
State the 2nd IGBT other end connection；The other end of 3rd IGBT is connected with the other end of the 4th IGBT；Described
The five IGBT other end is connected with the other end of the 6th IGBT.
Further, the master control power module is made up of power panel and master control borad, the gate pole with the first IGBT, institute
State the 2nd IGBT gate pole, the gate pole of the 3rd IGBT, the gate pole of the 4th IGBT, the gate pole of the 5th IGBT and institute
State the 6th IGBT gate pole connection.
The utility model has the following advantages compared with traditional technology：
Using the utility model, asking of causing frequency converter not work due to charge circuit device failure can be eliminated
Topic.
Brief description of the drawings
Fig. 1 is the circuit structure diagram for the frequency converter that a kind of new major loop that the present embodiment provides is formed.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
This provides a kind of frequency converter of new major loop composition using new, as shown in figure 1, including：
Rectification module 100, for industrial-frequency alternating current to be changed into direct current；
Charge filtration module 200, connects rectification module, for stable DC electricity；
Inversion output module 300, connection charging filtration module, for direct current to be changed into the friendship of size and frequency-adjustable
Stream electricity；
Master control power module 400, inversion output module is connected, for regulating and controlling to major loop.
Specifically, after single-phase electricity is passed through, rectification module 100 carries out rectification, and alternating current is converted to the direct current of pulsation,
Charged again by charging resistor to electric capacity, after treating that electric capacity is full of, contactor receives pickup signal, and its short circuit is then filtered
Wave circuit carries out flat ripple effect, and finally, direct current is converted to exchange electricity output by inversion output module 300 again, completes whole main
The action in loop.
In the present embodiment, rectification module 100 simultaneously connects charging filtration module 200 and inversion output module 300.
In the present embodiment, rectification module 100 includes three phase mains 110 and three-phase commutation bridge 120.
Three-phase commutation bridge 120 includes the first diode 121, the second diode 122, the 3rd diode 123, the 4th diode
124, the 5th diode 125, the 6th diode 126；
First diode 121, the 3rd diode 123, the common cathode of the 5th diode 125；Second diode the 122, the 4th 2
Pole pipe 124, the common-anode of the 6th diode 126；Negative and positive are docked and connected respectively between common cathode diode and co-anode diode
Connect R phases, S-phase and the T-phase of three phase mains 110.
Wherein, the dc bus that three-phase commutation bridge 120 exports directly is connected on the both positive and negative polarity of inversion output module 300.Charging
Filtration module 200 and inversion output module 300 are all to be attempted by dc bus both ends.
Rectification module 100 is mainly used in alternating current being converted to direct current.
In the present embodiment, charging filtration module 200 is made up of live part 210 and filtering part 220.
Live part 210 is used to charge to electric capacity in powered on moment and after charging by the short circuit of charging resistor 211
To complete the upper electricity of whole frequency converter；
Filtering part 220 is used for gentle and stablizes the direct current.
In the present embodiment, charging filtration module 200 is by charging resistor 211, first contactor 212, second contactor 213,
3rd contactor 214, the first electric capacity 221 and the second electric capacity composition 222.
One end of charging resistor 211 simultaneously connects the negative electrode of the 3rd diode 123 and one end of first contactor 212；Charging electricity
The other end of resistance 211 simultaneously connects the positive pole of the first electric capacity 221, the other end of first contactor 212 and the one of second contactor 213
End；The negative pole of first electric capacity 221 and the positive pole for connecing the second electric capacity 222, the other end of second contactor 213 and the 3rd contactor
214 one end；The negative pole of second electric capacity 222 simultaneously connects the anode of the 6th diode 126 and the other end of the 3rd contactor.
Specifically, the dc bus that three-phase commutation bridge 120 exports directly is connected on the both positive and negative polarity of inversion output module 300, and
And the positive pole of dc bus passes through the charge circuit being made up of first contactor, charging resistor 211 and is Large Copacity filtering first
The positive pole of electric capacity 221 is connected, and the negative pole of dc bus is connected with the negative pole of Large Copacity the second electric capacity 222 of filtering, so charging
Filtration module 200 and inversion output module 300 are all the both ends for being attempted by dc bus.
Live part 210 is by charging resistor 211 and first contactor 212, second contactor 213, the structure of the 3rd contactor 214
Into with the first electric capacity of Large Copacity 221, the second electric capacity 222 is serially connected in dc bus both ends together.Charging resistor 211 is used for
Electric moment charges to storage capacitor, plays the suppression to dash current and cushioning effect, after charging, first contactor 212,
Second contactor 213, the adhesive of the 3rd contactor 214 is short-circuit by charging resistor 211, completes the upper electricity of frequency converter.
Filtering part 220 is made up of the first electric capacity 221 and the second electric capacity 222, is responsible for the direct current of pulsation becoming gentle
Stably.
In the present embodiment, inversion output module 300 is by the first IGBT311, the 2nd IGBT312, the 3rd IGBT313, the 4th
IGBT314, the 5th IGBT315, the 6th IGBT316, the first feedback diode 321, the second feedback diode 322, the 3rd feedback
Diode 323, the 4th feedback diode 324, the 5th feedback diode 325 and the 6th feedback diode 326 form.
First IGBT311 is in parallel with the first feedback diode 321, and the 2nd IGBT312 and the second feedback diode 322 are simultaneously
Connection, the 3rd IGBT313 is in parallel with the 3rd feedback diode 323, and the 4th IGBT314 is in parallel with the 4th feedback diode 324, and the 5th
IGBT315 is in parallel with the 5th feedback diode 325, and the 6th IGBT316 is in parallel with the 6th feedback diode 326；
First IGBT311 one end simultaneously connects the 3rd IGBT313 one end and the 5th IGBT315 one end；2nd IGBT312
One end and connect the 4th IGBT314 one end and the 6th IGBT one end 316；The first IGBT311 other end and second
IGBT312 other end connection；The 3rd IGBT313 other end is connected with the 4th IGBT314 other end；5th IGBT315
The other end be connected with the 6th IGBT316 other end.
Specifically, inversion output module 300 completes the output par, c of frequency converter by six IGBT parallel feedbacks diodes,
It is responsible for direct current being changed into all adjustable alternating current of size and frequency.
IGBT is insulated gate bipolar transistor, is by BJT (double pole triode) and MOS (insulating gate type field effect tube)
The compound full-control type voltage driven type power semiconductor of composition, has the low conducting of MOSFET high input impedance and GTR concurrently
Advantage of both pressure drop.
IGBT module is by specific by IGBT (insulated gate bipolar transistor chip) and FWD (fly-wheel diode chip)
The modularized semiconductor product that forms of circuit bridge encapsulation；Between IGBT module after encapsulation directly applies to frequency converter, UPS not
In the equipment such as power-off source；IGBT module has the characteristics that energy-conservation, convenient to install and maintain, radiating is stable.
In the present embodiment, master control power module 400 is led to be made up of power panel 410 and master control borad 420, with the first IGBT311
Gate pole, the 2nd IGBT312 gate pole, the 3rd IGBT313 gate pole, the 4th IGBT314 gate pole, the 5th IGBT315 door
Pole and the 6th IGBT316 gate pole connect.
Specifically, master control power module 400 includes power panel 410 and master control borad 420.Power panel 410 passes through Switching Power Supply
Partly, detection circuit, protection circuit etc. reach the real-time setting and monitoring to various functions, and wherein master control borad 420 can be with DSP master
Control chip be core, other computings and protection circuit supplemented by each input signal is handled, computing.Inversion output module
300 points are three groups of IGBT single tubes drive circuits and one group of braking, and it is by main control chip and auxiliary circuit output response
SPWM square waves, so as to which control six IGBT gate poles turns on and off speed, it is finally reached regulation output voltage and output frequency
The purpose of rate.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (7)
- A kind of 1. frequency converter that new major loop is formed, it is characterised in that including：Rectification module, for industrial-frequency alternating current to be changed into direct current；Charge filtration module, the rectification module is connected, for stablizing the direct current；Inversion output module, the charging filtration module is connected, for the direct current to be changed into size and frequency-adjustable Alternating current；Master control power module, the inversion output module is connected, for regulating and controlling to major loop.
- 2. the frequency converter that a kind of new major loop according to claim 1 is formed, it is characterised in that the charging filtering mould Block is made up of live part and filtering part；The live part be used to charge to electric capacity in powered on moment and after charging by charging resistor short circuit to complete The upper electricity of whole frequency converter；The filtering part is used for gentle and stablizes the direct current.
- 3. the frequency converter that a kind of new major loop according to claim 1 is formed, it is characterised in that the rectification module is simultaneously Connect the charging filtration module and the inversion output module.
- 4. the frequency converter that a kind of new major loop according to claim 1 is formed, it is characterised in that the rectification module bag Include three phase mains and three-phase commutation bridge；The three-phase commutation bridge includes the first diode, the second diode, the 3rd diode, the 4th diode, the 5th diode, 6th diode；First diode, the 3rd diode, the 5th diode common cathode；Second diode, described Four diodes, the 6th diode common-anode；Negative and positive are docked between the common cathode diode and the co-anode diode And R phases, S-phase and the T-phase of three phase mains are connected respectively.
- 5. the frequency converter that a kind of new major loop according to claim 4 is formed, it is characterised in that the charging filtering mould Block is by charging resistor, first contactor, second contactor, the 3rd contactor, the first electric capacity and the second electric capacity composition；One end of the charging resistor simultaneously connects the negative electrode of the 3rd diode and one end of the first contactor；The charging The other end of resistance and the positive pole for connecing the first electric capacity, the other end of the first contactor and one end of the second contactor； The negative pole of first electric capacity and the positive pole for connecing second electric capacity, the other end of the second contactor and the 3rd contact One end of device；The negative pole of second electric capacity simultaneously connects the anode of the 6th diode and the other end of the 3rd contactor.
- 6. the frequency converter that a kind of new major loop according to claim 5 is formed, it is characterised in that the inversion exports mould Block is by the first IGBT, the 2nd IGBT, the 3rd IGBT, the 4th IGBT, the 5th IGBT, the 6th IGBT, the first feedback diode, and second Feedback diode, the 3rd feedback diode, the 4th feedback diode, the 5th feedback diode and the 6th feedback diode composition；First IGBT is in parallel with first feedback diode, and the 2nd IGBT and second feedback diode are simultaneously Connection, the 3rd IGBT is in parallel with the 3rd feedback diode, and the 4th IGBT is in parallel with the 4th feedback diode, 5th IGBT is in parallel with the 5th feedback diode, and the 6th IGBT is in parallel with the 6th feedback diode；One end of first IGBT simultaneously connects one end of the 3rd IGBT and one end of the 5th IGBT；2nd IGBT One end and connect one end of the 4th IGBT and one end of the 6th IGBT；The other end of first IGBT and described the Two IGBT other end connection；The other end of 3rd IGBT is connected with the other end of the 4th IGBT；Described 5th The IGBT other end is connected with the other end of the 6th IGBT.
- 7. the frequency converter that a kind of new major loop according to claim 6 is formed, it is characterised in that the master control power supply mould Block is made up of power panel and master control borad, the gate pole with the first IGBT, the gate pole of the 2nd IGBT, the 3rd IGBT's Gate pole, the gate pole of the 4th IGBT, the gate pole connection of the gate pole and the 6th IGBT of the 5th IGBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880832.6U CN206962715U (en) | 2017-07-20 | 2017-07-20 | The frequency converter that a kind of new major loop is formed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880832.6U CN206962715U (en) | 2017-07-20 | 2017-07-20 | The frequency converter that a kind of new major loop is formed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206962715U true CN206962715U (en) | 2018-02-02 |
Family
ID=61382085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720880832.6U Expired - Fee Related CN206962715U (en) | 2017-07-20 | 2017-07-20 | The frequency converter that a kind of new major loop is formed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206962715U (en) |
-
2017
- 2017-07-20 CN CN201720880832.6U patent/CN206962715U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11865933B2 (en) | Vehicle and energy conversion device and power system thereof | |
| US7830036B2 (en) | Power electronic module pre-charge system and method | |
| CN109889073B (en) | Drive control circuit and household electrical appliance | |
| JP2015503895A (en) | 5-stage power converter, control method and control apparatus therefor | |
| CN2859902Y (en) | In-line duplicate supply control device and in-line duplicate supply electric power unit | |
| CN103339844A (en) | Dc-dc converter | |
| CN203289117U (en) | High-efficient rectification and inversion integrated energy feedback system | |
| CN105703689A (en) | High-power brushless doubly-fed machine three-level bidirectional variable-frequency speed regulation system | |
| CN105071679A (en) | Five-level self-balanced inverter based on bridge switched capacitor module | |
| WO2013083033A1 (en) | Bootstrap drive circuit without extra power supply | |
| CN202997986U (en) | Direct current brushless motor driving device | |
| CN104022635B (en) | The drive circuit of electrical load | |
| CN104184311A (en) | Power supply circuit for gate driving circuit of a power converter | |
| CN102055354B (en) | Alternating current-direct current (AC-DC) converter and frequency converter | |
| CN100377481C (en) | Integration converton with three phase power factor correction | |
| CN201985763U (en) | Amplitude modulation high-frequency high-voltage power circuit used for electric precipitation | |
| CN206962715U (en) | The frequency converter that a kind of new major loop is formed | |
| CN103872940A (en) | Bi-directional converting topology | |
| CN205959943U (en) | Wide power input X -ray tube rotary anode drive arrangement | |
| CN113364334B (en) | Double-parallel Buck-Boost inverter and control method thereof | |
| CN202841050U (en) | Cascaded high-voltage inverter speed regulating system with energy feedback function | |
| CN207117490U (en) | A kind of work frequency conversion seamless switching frequency converter | |
| CN110460229B (en) | Modular multilevel frequency converter starting circuit and starting and low-speed operation method thereof | |
| CN112440815B (en) | High-voltage controller, high-voltage controller system and electric automobile | |
| CN209497400U (en) | Drive control circuit and household appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 |