CN109617493A - A kind of switch controlling device and frequency converter of frequency conversion output - Google Patents
A kind of switch controlling device and frequency converter of frequency conversion output Download PDFInfo
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- CN109617493A CN109617493A CN201811457361.3A CN201811457361A CN109617493A CN 109617493 A CN109617493 A CN 109617493A CN 201811457361 A CN201811457361 A CN 201811457361A CN 109617493 A CN109617493 A CN 109617493A
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- bridge arm
- diode
- relay
- arm igbt
- capacitor
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The embodiment of the present invention proposes the switch controlling device and frequency converter of a kind of frequency conversion output, which includes: inverter bridge, capacitor, first diode, relay, control panel；Wherein, the control panel connects the relay, to control the switch of the relay；The relay and the first diode and company；The anode of the first diode connects the inverter bridge, the anode of the cathode connection external power supply of the first diode；The anode of the capacitor connects the anode of the external power supply, the cathode ground connection of the capacitor.By the series relay between inverter bridge and power supply, and it is provided with the control panel of control relay, relay switch is controlled by control panel, to indirectly control the on/off of inverter bridge, power supply directly is controlled from source, it is reliable and stable, and device quantity is few, saves space and cost.
Description
Technical field
The present invention relates to connecting and disconnecting of the circuit control device field, in particular to the switch controlling device of a kind of frequency conversion output and
Frequency converter.
Background technique
The case where field of electrical control is combined electric equipment outside, such as when motor, is related specifically to high voltage, such as electricity
Terraced integral control system, the requirement to reliability and safety is relatively high, at present generally frequency converter three-phase output with
It is connect using the on-off of contactor control power supply although this method can meet the requirement in performance very well between three-phase motor
Tentaculum needs to control its on-off using high-voltage AC signal, and volume is big, higher cost, be difficult to meet villa ladder etc. to space and
The particularly harsh application demand of cost requirement.
So not only having met reliability, security requirement there is an urgent need to one kind in specific areas such as elevator controllings but also can save
The control method in space and cost.
Summary of the invention
For the defects in the prior art, the invention proposes a kind of frequency conversion output switch controlling device and frequency converter,
By the series relay between inverter bridge and power supply, and be provided with control relay control panel, by control panel control after
The switch of electric appliance directly controls power supply from source to indirectly control the on/off of inverter bridge, reliable and stable, and device number
Amount is few, saves space and cost.
Specifically, the invention proposes embodiments in detail below:
The embodiment of the present invention proposes a kind of switch controlling device of frequency conversion output, comprising: inverter bridge, capacitor, the one or two
Pole pipe, relay, control panel；Wherein,
The control panel connects the relay, to control the switch of the relay；
The relay and the first diode and company；
The anode of the first diode connects the inverter bridge, and the cathode of the first diode connects external power supply
Anode；
The anode of the capacitor connects the anode of the external power supply, the cathode ground connection of the capacitor.
In a specific embodiment, the capacitor specifically: filter capacitor；The first diode is afterflow two
Pole pipe.
In a specific embodiment, the inverter bridge is specially three-phase bridge module；
Three-phase bridge module includes: three upper bridge arm IGBT pipes and three lower bridge arm IGBT pipes；Wherein, the upper bridge arm
The collector of IGBT pipe is all connected with the anode of the first diode, while being connected to one end of relay output contact；
The emitter of the upper bridge arm IGBT pipe is all connected with the collector of the lower bridge arm IGBT pipe, while the upper bridge
The emitter of arm IGBT pipe is for connecting threephase load；
The grid of three upper bridge arm IGBT pipes is respectively connected to three phase control signal of bridge arm；
The grid of three lower bridge arm IGBT pipes is respectively connected to three phase control signal of lower bridge arm；
The emitter of three lower bridge arm IGBT pipes connects the cathode of the capacitor.
In a specific embodiment,
The upper bridge arm IGBT module is consistent with the structure of the lower bridge arm IGBT module.
In a specific embodiment, the upper bridge arm IGBT module includes with the lower bridge arm IGBT module
IGBT and the second diode；
Wherein, the anode of second diode connects the emitter of the IGBT；The cathode of second diode connects
Connect the collector of the IGBT.
In a specific embodiment, second diode is specially backward dioded.
The embodiment of the present invention also proposed a kind of frequency converter, the switch controlling device exported including such as above-mentioned frequency conversion.
With this, the embodiment of the present invention proposes the switch controlling device and frequency converter of a kind of frequency conversion output, the device packet
It includes: inverter bridge, capacitor, first diode, relay, control panel；Wherein, the control panel connects the relay, to control
Make the switch of the relay；The relay and the first diode and company；The anode connection institute of the first diode
State inverter bridge, the anode of the cathode connection external power supply of the first diode；The anode of the capacitor connects the external electricity
The anode in source, the cathode ground connection of the capacitor.By the series relay between inverter bridge and power supply, and be provided with control after
The control panel of electric appliance controls the switch of relay by control panel, to indirectly control the on/off of inverter bridge, directly from source
Head control power supply, it is reliable and stable, and device quantity is few, saves space and cost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of the switch controlling device for frequency conversion output that the embodiment of the present invention proposes；
Fig. 2 is a kind of structural schematic diagram of the switch controlling device for frequency conversion output that the embodiment of the present invention proposes；
Fig. 3 be in a kind of switch controlling device for frequency conversion output that the embodiment of the present invention proposes upper bridge arm IGBT module or under
The structural schematic diagram of bridge arm IGBT module.
Marginal data:
1- inverter bridge；The second diode of 11-； 12-IGBT；
2- capacitor；3- relay；4- control panel；
5- contactor；6- first diode.
Specific embodiment
Hereinafter, the various embodiments of the disclosure will be described more fully.The disclosure can have various embodiments, and
And it can adjust and change wherein.It should be understood, however, that: there is no be limited to be disclosed by the various embodiments of the disclosure
Specific embodiment intention, but the disclosure should be interpreted as covering the spirit and model of the various embodiments for falling into the disclosure
Enclose interior all adjustment, equivalent and/or optinal plan.
The term used in the various embodiments of the disclosure is used only for the purpose of describing specific embodiments and not anticipates
In the various embodiments of the limitation disclosure.As used herein, singular is intended to also include plural form, unless context
It is expressly otherwise indicated.Unless otherwise defined, otherwise all terms (including technical terms and scientific terms) used herein
With meaning identical with the various normally understood meanings of embodiment one skilled in the art of the disclosure.The art
Language (term such as limited in the dictionary generally used) is to be interpreted as having and context in the related technical field
The identical meaning of meaning and it will be interpreted as having Utopian meaning or meaning too formal, unless in the disclosure
Various embodiments in be clearly defined.
Embodiment 1
The embodiment of the present invention 1 discloses a kind of switch controlling device of frequency conversion output, as shown in Figure 1 and Figure 2, comprising:
Inverter bridge 1, capacitor 2, relay 3, control panel 4, first diode 6；Wherein,
The control panel 4 connects the relay 3, to control the switch of the relay 3；
The relay 3 and the first diode 6 simultaneously connect；
The anode of the first diode 6 connects the inverter bridge 1, and the cathode of the first diode 6 connects external electricity
The anode in source；
The anode of the capacitor 2 connects the anode of the external power supply, the cathode ground connection of the capacitor 2.
Specifically, in control process, such as the output end of inverter bridge 1 connects electrical equipment, for example, motor, herein
In the case of, opening and turning off for relay 3 is controlled by control panel 4, then, when relay 3 is in opening state, so that
The power path of inverter bridge 1 be it is logical, can be exported with this, external such as motor be connected, so that motor starts work
Make；And when relay 3 is in an off state, but also the power circuit of inverter bridge 1 is to disconnect, inverter bridge 1 does not have power supply
Input, there will not be output, and then external such as motor can not also start work, pass through control panel 4 and relay 3 with this
Setting, control opening and turning off between inverter bridge 1 and power supply, and finally realize the outer electrical equipment connected of control whether work
Make.
Specifically, first diode 6 is specially freewheeling diode, it is connected to the both ends of relay 3 in parallel, and
Formed circuit is made relay 3 disconnect the high electromotive force that moment generates and is charged in the loop with continuous current system to capacitor 2,
To play the role of protecting the element in entire circuit not impaired.
Specific control panel 4 can be the general currently used control device controlled relay 3, can also be with
For power supply device (generating on-off of the low current to control relay 3).
Power supply directly is controlled from source in this programme, reliable and stable and involved device quantity is few, saves space
With cost.
Specifically, as shown in Fig. 2, inverter bridge 1 is specifically as follows three-phase bridge module；
Upper bridge arm IGBT pipe in three-phase bridge module passes through control three all by relay U1 connection DC bus power supply
The upper and lower bridge arm mutually exported turns on and off, and generates three phase mains U, V, W of output frequency and voltage variable.In bus electricity
Increase a relay switch contacts between source and inverter bridge, when contact disconnects, then three-phase output U, V, W are also just without electricity
Source output.
Under a specific application scenarios, control panel passes through control Y1, X1 after receiving and needing operating instruction
Output so that U1 relay obtain it is electric after control P0+, P1+ conducting, and then control three-phase bridge module 1 connect to power supply, start work
Make and export three phase mains (respectively U phase, V phase, W phase), so that motor is started to work.And stop when control panel receives
After only ordering, output is stopped by control Y1, X1, so that U1 relay contact disconnects, the three-phase of three-phase bridge module 1 also stops
Output, to realize the control to opening with shutdown.
In a specific embodiment, as shown in Fig. 2, the capacitor 2 specifically: filter capacitor.
In a specific embodiment, as shown in Fig. 2, the three-phase bridge module include: three upper bridge arm IGBT pipes and
Three lower bridge arm IGBT pipes；Wherein, the collector of the upper bridge arm IGBT pipe is all connected with the anode of the first diode 6, and
It is connected to one end of relay output contact；
The emitter of the upper bridge arm IGBT pipe is all connected with the collector of the lower bridge arm IGBT pipe, while the upper bridge
The emitter of arm IGBT pipe is used to connect threephase load,
The grid of three upper bridge arm IGBT pipes is respectively connected to three phase control signal of bridge arm；
The grid of three lower bridge arm IGBT pipes is respectively connected to three phase control signal of lower bridge arm；
The emitter of three lower bridge arm IGBT pipes connects the cathode of the capacitor 2.
As shown in Fig. 2, the three-phase bridge module includes: three upper bridge arm IGBT (Insulated Gate Bipolar
Transistor, insulated gate bipolar transistor) manage (respectively corresponding the K1 in Fig. 2, K3, K5) and three lower bridge arm IGBT pipes
(respectively corresponding the K2 in Fig. 2, K4, K6)；Wherein, the collector of the upper bridge arm IGBT pipe is being all connected with first diode 6 just
One end of pole and relay output contact.
The emitter of the upper bridge arm IGBT pipe is all connected with the collector of the lower bridge arm IGBT pipe, while the upper bridge
The emitter of arm IGBT pipe is for connecting threephase load (such as shown in Fig. 2, including U phase, V phase, W phase).
The grid of three upper bridge arm IGBT pipes be respectively connected to three phase control signal of bridge arm (such as shown in Fig. 2,
Including Vup,Vvp,Vwp)；
The grid of three lower bridge arm IGBT pipes be respectively connected to three phase control signal of lower bridge arm (such as shown in Fig. 2,
Including VunVvn,Vwn)；
The emitter of three lower bridge arm IGBT pipes connects the cathode of the capacitor 2.
In a specific embodiment, as shown in Fig. 2, the upper bridge arm IGBT module and the lower bridge arm IGBT mould
The structure of block is consistent.
In a specific embodiment, the upper bridge arm IGBT module includes with the lower bridge arm IGBT module
IGBT12 and the second diode 11；
Wherein, the anode of second diode 11 connects the emitter of the IGBT12；Second diode 11
Cathode connects the collector of the IGBT12.
In a specific embodiment, as shown in Figure 2 and Figure 3, the upper bridge arm IGBT pipe and the lower bridge arm IGBT
Guan Jun includes that IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) 12 and electric current are continuous
Second diode 11 of stream.
In a specific embodiment, second diode 11 is specially backward dioded.
Embodiment 2
The embodiment of the present invention 2 also discloses a kind of frequency converter, including opening for the output of frequency conversion described in above-described embodiment 1
Close control device.
Specifically, the record in the switch controlling device of frequency conversion output, refers to the record in above-described embodiment 1, herein
No longer repeated.
With this, the embodiment of the present invention proposes the switch controlling device and frequency converter of a kind of frequency conversion output, the device packet
It includes: inverter bridge 1, capacitor 2, relay 3, control panel 4, first diode 6；Wherein, the control panel 4 connects the relay
3, to control the switch of the relay 3；The relay 3 and the first diode 6 simultaneously connect；The first diode 6
Anode connect the inverter bridge 1, the anode of the cathode connection external power supply of the first diode 6；The capacitor 2 is just
Pole connects the anode of the external power supply, the cathode ground connection of the capacitor 2.Pass through relay of connecting between inverter bridge 1 and power supply
Device 3, and it is provided with the control panel 4 of control relay 3, the switch of relay 3 is controlled, by control panel 4 to indirectly control inversion
The on/off of bridge 1 directly controls power supply from source, reliable and stable, and device quantity is few, saves space and cost.
It will be appreciated by those skilled in the art that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, the module in attached drawing
Or process is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also be carried out corresponding change and is located at the one or more for being different from this implement scene
In device.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
Aforementioned present invention serial number is for illustration only, does not represent the superiority and inferiority of implement scene.
Disclosed above is only several specific implementation scenes of the invention, and still, the present invention is not limited to this, any
What those skilled in the art can think variation should all fall into protection scope of the present invention.
Claims (7)
1. a kind of switch controlling device of frequency conversion output characterized by comprising inverter bridge, capacitor, first diode, relay
Device, control panel；Wherein,
The control panel connects the relay, to control the switch of the relay；
The relay and the first diode and company；
The anode of the first diode connects the inverter bridge, and the cathode connection external power supply of the first diode is just
Pole；
The anode of the capacitor connects the anode of the external power supply, the cathode ground connection of the capacitor.
2. a kind of switch controlling device of frequency conversion output as described in claim 1, which is characterized in that the capacitor specifically:
Filter capacitor；The first diode is freewheeling diode.
3. a kind of switch controlling device of frequency conversion output as described in claim 1, which is characterized in that the inverter bridge is specially
Three-phase bridge module；
The three-phase bridge module includes: three upper bridge arm IGBT pipes and three lower bridge arm IGBT pipes；Wherein, the upper bridge arm IGBT
The collector of pipe is all connected with the anode of the first diode, while being connected to one end of relay output contact；
The emitter of the upper bridge arm IGBT pipe is all connected with the collector of the lower bridge arm IGBT pipe, while the upper bridge arm IGBT
The emitter of pipe is used to connect threephase load,
The grid of three upper bridge arm IGBT pipes is respectively connected to three phase control signal of bridge arm；
The grid of three lower bridge arm IGBT pipes is respectively connected to three phase control signal of lower bridge arm；
The emitter of three lower bridge arm IGBT pipes connects the cathode of the capacitor.
4. a kind of switch controlling device of frequency conversion output as claimed in claim 3, which is characterized in that
The upper bridge arm IGBT module is consistent with the structure of the lower bridge arm IGBT module.
5. a kind of switch controlling device of frequency conversion output as claimed in claim 3, which is characterized in that the upper bridge arm IGBT mould
Block and the lower bridge arm IGBT module include IGBT and the second diode；
Wherein, the anode of second diode connects the emitter of the IGBT；The cathode of second diode connects institute
State the collector of IGBT.
6. a kind of switch controlling device of frequency conversion output as claimed in claim 5, which is characterized in that the second diode tool
Body is backward dioded.
7. a kind of frequency converter, which is characterized in that the switch control exported including frequency conversion as claimed in any one of claims 1 to 6
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457361.3A CN109617493A (en) | 2018-11-30 | 2018-11-30 | A kind of switch controlling device and frequency converter of frequency conversion output |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457361.3A CN109617493A (en) | 2018-11-30 | 2018-11-30 | A kind of switch controlling device and frequency converter of frequency conversion output |
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| Publication Number | Publication Date |
|---|---|
| CN109617493A true CN109617493A (en) | 2019-04-12 |
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| CN201811457361.3A Pending CN109617493A (en) | 2018-11-30 | 2018-11-30 | A kind of switch controlling device and frequency converter of frequency conversion output |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980054090A (en) * | 1996-12-27 | 1998-09-25 | 박병재 | Driving circuit of electric vehicle |
| CN1713503A (en) * | 2004-06-25 | 2005-12-28 | Sma技术股份公司 | Method of converting a direct current voltage from a source of direct current voltage into a alternating current voltage |
| KR20150145539A (en) * | 2014-06-20 | 2015-12-30 | 주식회사 만도 | Motor Driving Circuit of Electric Power Steering System |
| CN209299172U (en) * | 2018-11-30 | 2019-08-23 | 展鹏科技股份有限公司 | A kind of switch controlling device and frequency converter of frequency conversion output |
-
2018
- 2018-11-30 CN CN201811457361.3A patent/CN109617493A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980054090A (en) * | 1996-12-27 | 1998-09-25 | 박병재 | Driving circuit of electric vehicle |
| CN1713503A (en) * | 2004-06-25 | 2005-12-28 | Sma技术股份公司 | Method of converting a direct current voltage from a source of direct current voltage into a alternating current voltage |
| KR20150145539A (en) * | 2014-06-20 | 2015-12-30 | 주식회사 만도 | Motor Driving Circuit of Electric Power Steering System |
| CN209299172U (en) * | 2018-11-30 | 2019-08-23 | 展鹏科技股份有限公司 | A kind of switch controlling device and frequency converter of frequency conversion output |
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