CN109286323A - More power frequency conversion systems - Google Patents
More power frequency conversion systems Download PDFInfo
- Publication number
- CN109286323A CN109286323A CN201710599889.3A CN201710599889A CN109286323A CN 109286323 A CN109286323 A CN 109286323A CN 201710599889 A CN201710599889 A CN 201710599889A CN 109286323 A CN109286323 A CN 109286323A
- Authority
- CN
- China
- Prior art keywords
- insulated gate
- bipolar transistor
- gate bipolar
- diode
- inverter
- 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.)
- Pending
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of more power frequency conversion systems, it includes rectifier, filter, the first inverter, the first controller, the first finger-board, the second inverter, second controller, the second finger-board, two three-phase motor M, the DC output end of rectifier connects the DC input of filter by conducting wire, and the DC output end of filter connects DC input, the DC input of the second inverter of the first inverter by conducting wire；First controller, a three-phase motor are all connect with the first inverter, and the first finger-board is connect with the first controller, and second controller, another three-phase motor are all connect with the second inverter, and the second finger-board is connect with second controller.Wiring of the present invention is simple, and occupied area is small, at low cost.
Description
Technical field
The present invention relates to a kind of frequency conversion systems, more particularly to a kind of more power frequency conversion systems.
Background technique
Frequency converter is common power supply apparatus, and labor productivity can be improved, and improves automation degree of equipment, saves energy
Source reduces production cost.User requires according to the technique of oneself and application selects the frequency converter for being suitble to oneself, this is also to change
More stringent requirements are proposed for frequency device.It is some need to the shared occasion of more frequency converters, traditional singly exported if being provided solely for more
Frequency converter takes up a large area it will cause wiring complexity, at high cost to wait puzzlement.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of more power frequency conversion systems, and wiring is simple, occupied area
It is small, it is at low cost.
The present invention is to solve above-mentioned technical problem by following technical proposals: a kind of more power frequency conversion systems, special
Sign is comprising rectifier, filter, the first inverter, the first controller, the second finger-board, the second inverter, the second control
Device processed, the first finger-board, two three-phase motor M, the DC output end of rectifier pass through the direct current that conducting wire connects filter
Input terminal, the DC output end of filter connect the DC input of the first inverter, the second inverter by conducting wire
DC input；First controller, a three-phase motor are all connect with the first inverter, the first finger-board and the first controller
Connection, second controller, another three-phase motor are all connect with the second inverter, and the second finger-board is connect with second controller.
Preferably, the rectifier is connect with major loop terminal.
Preferably, the rectifier is by first diode, the second diode, third diode, the 4th diode, the five or two
Pole pipe, the 6th diode composition, first diode and the second Diode series, third diode and the 4th Diode series, the
Five diodes and the 6th Diode series.
Preferably, the structure of first inverter is identical as the structure of the second inverter, the first inverter, the second inversion
Device all include the first insulated gate bipolar transistor, the second insulated gate bipolar transistor, third insulated gate bipolar transistor,
4th insulated gate bipolar transistor, the 5th insulated gate bipolar transistor, the 6th insulated gate bipolar transistor, the first insulation
The emitter of grid bipolar transistor is connect with the collector of the second insulated gate bipolar transistor, and third insulated gate bipolar is brilliant
The emitter of body pipe is connect with the collector of the 4th insulated gate bipolar transistor, the transmitting of the 5th insulated gate bipolar transistor
Pole is connect with the collector of the 6th insulated gate bipolar transistor, the base stage of the first insulated gate bipolar transistor, the second insulation
The base stage of grid bipolar transistor, the base stage of third insulated gate bipolar transistor, the 4th insulated gate bipolar transistor base
Pole, the base stage of the 5th insulated gate bipolar transistor, the base stage of the 6th insulated gate bipolar transistor all with the first controller or
Second controller connection.
Preferably, the filter includes inductance, first capacitor, the second capacitor, inductance, first capacitor, the second capacitor according to
Secondary series connection.
The positive effect of the present invention is that: the present invention is more, and the wiring of power frequency conversion system is simple, and occupied area is small, cost
It is low, reduce the volume of frequency converter, compact layout.Present invention regulation is accurate, is swift in response, and energy utilization rate is high, securely and reliably,
It is applied widely.The present invention need to only exchange input all the way, that is, can produce the completely isolated exchange output of multichannel, drive more electricity
Machine simplifies the pop wave absorbing circuit of input terminal.Traditional frequency conversion device then needs multichannel pop wave absorbing circuit.After rectifying and wave-filtering, institute
There is inverter common DC bus, therefore only need a set of rectification charge-discharge circuit, has saved cost compared with traditional frequency conversion device.It is inverse
Become device common DC bus and saved electric energy, when a motor stopping, can produce electricl energy and feed back to DC bus, feed back to direct current
The electric energy of bus can just be supplied to the motor being currently running, and save electric energy.Structure of the invention is compact, rationally distributed, body
Product is small, using conveniently, has saved cost in the case where providing high performance situation.All controllers and driving circuit share a multichannel
Accessory power supply is exported, circuit structure is simplified, reduces the number of accessory power supply.It is the independent frequency conversion of multichannel for load
Device has no mutually relevance electrically.The arrangement of power device of the invention is reasonable, left to have pulled open distance convenient for heat dissipation
Right distribution.Power device shares a radiator, radiator fan is shared, as long as there is a power device to be in working condition fan
It will run always, ensure that good thermal diffusivity.Major loop terminal R, S, T are the independent connecting terminal of multichannel, are separately arranged,
It is intuitive and easy to understand, a possibility that reducing artificial wrong.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the more power frequency conversion systems of the present invention.
Fig. 2 is the circuit diagram of rectifier in the present invention.
Fig. 3 is the circuit diagram of the first inverter, the second inverter in the present invention.
Fig. 4 is the circuit diagram of filter in the present invention.
Specific embodiment
Present pre-ferred embodiments are provided with reference to the accompanying drawing, in order to explain the technical scheme of the invention in detail.
As shown in Figure 1, the more power frequency conversion systems of the present invention include rectifier 6, filter 7, the control of the first inverter 8, first
Device 9 processed, the first finger-board 10, the second inverter 11,13, two second controller 12, the second finger-board three-phase motor M, rectification
The DC output end of device 6 connects the DC input of filter 7 by conducting wire, and the DC output end of filter 7 passes through
Conducting wire connects DC input, the DC input of the second inverter 11 of the first inverter 8；First controller 9, one
Three-phase motor M is connect with the first inverter 8, and the first finger-board 10 is connect with the first controller 9, second controller 12, another
A three-phase motor M is connect with the second inverter 11, and the second finger-board 13 is connect with second controller 12.It rectifier 6 and leads back
Road terminal R, S, T connection, for inputting three-phase alternating current.
As shown in Fig. 2, rectifier 6 is by first diode D1, the second diode D2, third diode D3, the 4th diode
D4, the 5th diode D5, the 6th diode D6 composition, first diode D1 connect with the second diode D2, third diode D3
It connects with the 4th diode D4, the 5th diode D5 connects with the 6th diode D6, and rectifier passes through three-phase alternating current electric rectification
Filter becomes direct current.
As shown in figure 3, the structure of the first inverter is identical as the structure of the second inverter, the first inverter, the second inversion
Device all includes the first insulated gate bipolar transistor Q1, the second insulated gate bipolar transistor Q2, third insulated gate bipolar crystalline substance
Body pipe Q3, the 4th insulated gate bipolar transistor Q4, the 5th insulated gate bipolar transistor Q5, the 6th insulated gate bipolar crystal
Pipe Q6, the emitter of the first insulated gate bipolar transistor Q1 are connect with the collector of the second insulated gate bipolar transistor Q2,
The emitter of third insulated gate bipolar transistor Q3 is connect with the collector of the 4th insulated gate bipolar transistor Q4, pentasyllabic quatrain
The emitter of edge grid bipolar transistor Q5 is connect with the collector of the 6th insulated gate bipolar transistor Q6, and the first insulated gate is double
The base stage of polar transistor Q1, the base stage of the second insulated gate bipolar transistor Q2, third insulated gate bipolar transistor Q3
Base stage, the base stage of the 4th insulated gate bipolar transistor Q4, the base stage of the 5th insulated gate bipolar transistor Q5, the 6th insulated gate
The base stage of bipolar transistor Q6 is all connect with the first controller or second controller.In first controller, second controller
Under acting on respectively, DC inverter is become the controllable three-phase sine-wave of frequency, voltage and exchanged by the first inverter, the second inverter
Electricity.
As shown in figure 4, filter 7 includes inductance L, first capacitor C1, the second capacitor C2, inductance L, first capacitor C1, the
Two capacitor C2 are sequentially connected in series.
First controller 9, second controller 12 share a multiple-channel output accessory power supply, and the power device on frequency converter is handed over
Fork arranges and shares radiator fan.SPWM circuit, PID control circuit are designed in first controller 9, in second controller 12
And memory.The present embodiment in use, can by the first controller 9, second controller 12 control three-phase electricity run in turn and
Stop.Sinusoidal Pulse Width Modulation (i.e. Sinusoidal Pulse Width Modulation, abbreviation are equipped in controller
SPWM) circuit, ratio-integral-differential (i.e. proportion-integral-derivative, abbreviation PID) control circuit
And memory.When any one starting of three phases motor, controller sends operating instruction to radiator fan simultaneously, when all three-phase electricities
When machine is out of service, fan can just stop.
Rectifier selects bridge rectifier, and the first inverter, the second inverter all select insulated gate bipolar transistor.
First finger-board and the second finger-board are mainly made of charactron, driving circuit, key.
The structure of first controller and the structure of second controller are identical, and the first controller and second controller all use
DSP(Digital Signal Processing, Digital Signal Processing) chip, the model of dsp chip is TMS320F28034.
The present invention only needs a filter, and the reactance of filter is optional, and the power factor of device can be improved, and reduces device
To the harmonic pollution of power grid.Not selecting can be shorted two connecting terminals of reactance with copper bar when reactance.
The present embodiment is in use, three-phase alternating current is input to rectification by major loop terminal R, S, T by three-phase alternating current input
The three-phase alternating current received is converted into direct current electricity output to filter through filtered bus electricity by the rectifier of device, frequency converter
Pressure is connected to the first inverter, the second inverter, under the control of the first controller, the control of second controller, the first inversion
Device, the second inverter are supplied to three-phase motor after direct current is converted into three-phase alternating current.Three-phase alternating-current supply is connected by conducting wire
The input terminal of more power frequency conversion systems is connect, the output terminal of more power converter plants connects three-phase motor, and the present embodiment takes two
Platform three-phase motor.The present invention generates the completely isolated exchange output of multichannel under conditions of only needing to access exchange input all the way,
More three-phase motors can be driven simultaneously.
Particular embodiments described above, the technical issues of to solution of the invention, technical scheme and beneficial effects carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to
The present invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (5)
1. a kind of more power frequency conversion systems, which is characterized in that it includes rectifier, filter, the first inverter, the first control
Device, the first finger-board, the second inverter, second controller, the second finger-board, two three-phase motor M, the direct current of rectifier are defeated
Outlet connects the DC input of filter by conducting wire, and the DC output end of filter connects the first inversion by conducting wire
The DC input of the DC input of device, the second inverter；First controller, a three-phase motor all with the first inversion
Device connection, the first finger-board are connect with the first controller, and second controller, another three-phase motor all connect with the second inverter
It connects, the second finger-board is connect with second controller.
2. more power frequency conversion systems as described in claim 1, which is characterized in that the rectifier is connect with major loop terminal.
3. more power frequency conversion systems as described in claim 1, which is characterized in that the rectifier is by first diode, second
Diode, third diode, the 4th diode, the 5th diode, the 6th diode composition, first diode and the second diode
Series connection, third diode and the 4th Diode series, the 5th diode and the 6th Diode series.
4. more power frequency conversion systems as described in claim 1, which is characterized in that the structure of first inverter and second inverse
The structure for becoming device is identical, and the first inverter, the second inverter all include the first insulated gate bipolar transistor, the second insulated gate pair
Polar transistor, third insulated gate bipolar transistor, the 4th insulated gate bipolar transistor, the 5th insulated gate bipolar transistor
Pipe, the 6th insulated gate bipolar transistor, the emitter of the first insulated gate bipolar transistor and the second insulated gate bipolar are brilliant
The collector of body pipe connects, the current collection of the emitter of third insulated gate bipolar transistor and the 4th insulated gate bipolar transistor
Pole connection, the emitter of the 5th insulated gate bipolar transistor are connect with the collector of the 6th insulated gate bipolar transistor, the
The base stage of one insulated gate bipolar transistor, the base stage of the second insulated gate bipolar transistor, third insulated gate bipolar crystal
The base stage of pipe, the base stage of the 4th insulated gate bipolar transistor, the base stage of the 5th insulated gate bipolar transistor, the 6th insulated gate
The base stage of bipolar transistor is all connect with the first controller or second controller.
5. more power frequency conversion systems as described in claim 1, which is characterized in that the filter include inductance, first capacitor,
Second capacitor, inductance, first capacitor, the second capacitor are sequentially connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599889.3A CN109286323A (en) | 2017-07-21 | 2017-07-21 | More power frequency conversion systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599889.3A CN109286323A (en) | 2017-07-21 | 2017-07-21 | More power frequency conversion systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109286323A true CN109286323A (en) | 2019-01-29 |
Family
ID=65185163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710599889.3A Pending CN109286323A (en) | 2017-07-21 | 2017-07-21 | More power frequency conversion systems |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665540B1 (en) * | 2006-06-14 | 2007-01-09 | 국제통신공업 주식회사 | All igbt ups system for input/output three phases |
| CN101877541A (en) * | 2009-04-29 | 2010-11-03 | 深圳市英威腾电气股份有限公司 | High-power four-quadrant frequency converter and power unit |
| CN102480265A (en) * | 2010-11-22 | 2012-05-30 | 大连兆阳软件科技有限公司 | Novel alternating-current motor variable-frequency speed control system |
| CN203942453U (en) * | 2014-05-11 | 2014-11-12 | 唐山开诚电控设备集团有限公司 | A kind of three level three combined high pressure explosion-proof type RHVC |
| CN204216804U (en) * | 2014-11-20 | 2015-03-18 | 河北华北石油荣盛机械制造有限公司 | The distributed collecting and distributing frequency conversion control energy saving apparatus of cluster well oil extractor |
| CN207150435U (en) * | 2017-07-21 | 2018-03-27 | 上海众辰电子科技有限公司 | More power frequency conversion systems |
-
2017
- 2017-07-21 CN CN201710599889.3A patent/CN109286323A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665540B1 (en) * | 2006-06-14 | 2007-01-09 | 국제통신공업 주식회사 | All igbt ups system for input/output three phases |
| CN101877541A (en) * | 2009-04-29 | 2010-11-03 | 深圳市英威腾电气股份有限公司 | High-power four-quadrant frequency converter and power unit |
| CN102480265A (en) * | 2010-11-22 | 2012-05-30 | 大连兆阳软件科技有限公司 | Novel alternating-current motor variable-frequency speed control system |
| CN203942453U (en) * | 2014-05-11 | 2014-11-12 | 唐山开诚电控设备集团有限公司 | A kind of three level three combined high pressure explosion-proof type RHVC |
| CN204216804U (en) * | 2014-11-20 | 2015-03-18 | 河北华北石油荣盛机械制造有限公司 | The distributed collecting and distributing frequency conversion control energy saving apparatus of cluster well oil extractor |
| CN207150435U (en) * | 2017-07-21 | 2018-03-27 | 上海众辰电子科技有限公司 | More power frequency conversion systems |
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