CN204794324U - A manual switching variable frequency power supply system for electromagnetic stirring device - Google Patents
A manual switching variable frequency power supply system for electromagnetic stirring device Download PDFInfo
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- CN204794324U CN204794324U CN201520498697.XU CN201520498697U CN204794324U CN 204794324 U CN204794324 U CN 204794324U CN 201520498697 U CN201520498697 U CN 201520498697U CN 204794324 U CN204794324 U CN 204794324U
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Abstract
The utility model discloses a manual switching variable frequency power supply system for electromagnetic stirring device, switch the cabinet including main power source, control source, power -supply distribution cabinet, a N variable frequency power supply cabinet commonly used, two reserve variable frequency power supply cabinets and variable frequency power supply, be equipped with a N+1 doublethrow switch in the variable frequency power supply switching cabinet, the rectifier and inverter module power supply of main power source in the power -supply distribution cabinet is the variable frequency power supply cabinet, the outlet side of a N variable frequency power supply cabinet commonly used is a N electromagnetic stirring device power supply through a N doublethrow switch respectively, the one end of a N doublethrow switch connects the outlet side of a N variable frequency power supply cabinet commonly used respectively, and the other end all connects the middle terminal of a N+1 doublethrow switch, the both ends of a N+1 doublethrow switch connect the outlet side of two reserve variable frequency power supply cabinets respectively, the control source is the control module power supply in the variable frequency power supply cabinet, wherein N is for being more than or equal to 1 integer. The utility model discloses simple structure, control is nimble convenient, and the reliability is high.
Description
Technical field
The utility model relates to a kind of manual switchover frequency-converting power supply for electromagnetic mixing apparatus.
Background technology
Present stage, electromagnetic mixing apparatus was an indispensable part in steel plant continuous casting equipment.Electromagnetic mixing apparatus is by low-voltage variable frequency Power supply, inverter circuit in low-voltage variable frequency power supply generally adopts the bridge inverter main circuit be made up of insulated gate bipolar transistor (IGBT), as long as there is a device for power switching to go wrong in the course of the work, electromagnetic stirring system is by cisco unity malfunction, therefore reliability is lower, affects normal activity in production.
Simultaneously, along with type multimode electromagnetic flow control technology (i.e. MM ?EMS) development, need to realize on same conticaster, the several functions (as deceleration, acceleration, rotation, subregion, braking etc.) of electromagnetism flow control is combined, this needs multiple electromagnetic inductor collaborative work, the electric current of logical different amplitude, frequency and phase place in each electromagnetic inductor, this is higher to the reliability requirement of whole low-voltage variable frequency power-supply system.Therefore need a kind ofly there is multiple current output capability and the high frequency-converting power supply of the reliability of whole system.
Therefore be necessary to design a kind of frequency-converting power supply for electromagnetic mixing apparatus newly.
Utility model content
The technical problem that the utility model solves is, for the deficiencies in the prior art, provides a kind of manual switchover frequency-converting power supply for electromagnetic mixing apparatus, and structure is simple, and control flexible, reliability is high.
The technical solution of the utility model is:
For a manual switchover frequency-converting power supply for electromagnetic mixing apparatus, comprise main power source, control power supply, power distribution panel, N number of conventional variable frequency power supply cabinet, two variable frequency power supply cabinets for subsequent use and variable frequency power supply switch cabinet;
Multiple circuit breaker is provided with in described power distribution panel;
Conventional variable frequency power supply cabinet is identical with variable frequency power supply cabinet for subsequent use;
Be equipped with fuse, commutation inversion module and control module in each variable frequency power supply cabinet, described fuse is connected to the front end of commutation inversion module, and commutation inversion module is controlled by control module;
N+1 double-throw disconnecting link is provided with in described variable frequency power supply switching cabinet;
Described main power source is that commutation inversion module in variable frequency power supply cabinet is powered through power distribution panel;
The outlet side of N number of conventional variable frequency power supply cabinet is that N number of electromagnetic mixing apparatus is powered through N number of double-throw disconnecting link respectively;
One end of N number of double-throw disconnecting link connects the outlet side of N number of conventional variable frequency power supply cabinet respectively, and the other end all connects the intermediate terminal of N+1 double-throw disconnecting link; The two ends of N+1 double-throw disconnecting link connect the outlet side of two variable frequency power supply cabinets for subsequent use respectively;
Described control power supply is that the control module in variable frequency power supply cabinet is powered;
Wherein N be more than or equal to 1 integer.
The described manual switchover frequency-converting power supply for electromagnetic mixing apparatus, also comprises power distribution and system industrial control cabinet; Circuit breaker and PLC is provided with in power distribution and system industrial control cabinet;
The circuit breaker of described control power supply in power distribution and system industrial control cabinet is that the control module in variable frequency power supply cabinet is powered;
The front end of the fuse in described variable frequency power supply cabinet is also provided with contactor; Closed and the disconnection of contactor are controlled by described PLC.
Contactor in described N number of conventional variable frequency power supply cabinet is connected with one end of the N number of circuit breaker in power distribution panel respectively, and the other end of N number of circuit breaker is connected to an O, and some O is connected with main power source through another circuit breaker; Contactor in described two variable frequency power supply cabinets for subsequent use is connected with one end of another two circuit breakers in power distribution panel respectively, and the other end of two circuit breakers is connected to a P, and some P is connected with main power source through another circuit breaker.
Described commutation inversion module comprises rectification circuit, energy storage filter circuit and inverter circuit;
Described inverter circuit is three-phase inverter bridge circuit; Each brachium pontis of three-phase inverter bridge circuit comprises two IGBT; The break-make of described IGBT is all controlled by described control module;
Described rectification circuit is three-phase bridge rectifier circuit.
Described control module comprises DSP or FPGA.
Described control module is connected with human-computer interaction module; Described human-computer interaction module is for arranging frequency and the amplitude of the three-phase electricity of inverter circuit output;
Described N=3.
Also power transfer module is provided with in power distribution and system industrial control cabinet, for being 24v, 15v, 5v or 3.3v by the voltage transitions of control power supply, then give the power supply of PLC, control module (DSP or FPGA) and human-computer interaction module (touch-screen).
Beneficial effect:
The utility model adopts Redundancy Design, be provided with two standby variable frequency power cabinets, when any one conventional variable frequency power supply cabinet breaks down, switch the double-throw disconnecting link in cabinet by variable frequency power supply, can the variable frequency power supply cabinet that breaks down of bypass immediately, and standby variable frequency power cabinet is come into operation; Do not affect the normal work of whole system, reliability is high, and structure is simple simultaneously, compact.Double-throw chopper switch also has mechanical interlocked function, can prevent the parallel running of duplicate supply and Liang Tiao supply line from powering simultaneously, controls simple, directly perceived.
Multiple circuit breaker is provided with in power distribution panel of the present utility model, can be as required, each conventional variable frequency power supply cabinet and the independent power-off of standby variable frequency power cabinet are carried out repair and maintenance, or repair and maintenance is carried out in the power-off simultaneously of multiple conventional variable frequency power supply cabinet and standby variable frequency power cabinet.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
As shown in Figure 1, the utility model provides a kind of manual switchover frequency-converting power supply for electromagnetic mixing apparatus, comprises main power source, controls power supply, power distribution panel, N number of conventional variable frequency power supply cabinet, two variable frequency power supply cabinets for subsequent use and variable frequency power supply switch cabinet;
Multiple circuit breaker is provided with in described power distribution panel;
Conventional variable frequency power supply cabinet is identical with variable frequency power supply cabinet for subsequent use;
Be equipped with fuse, commutation inversion module and control module in each variable frequency power supply cabinet, described fuse is connected to the front end of commutation inversion module, and commutation inversion module is controlled by control module;
N+1 double-throw disconnecting link is provided with in described variable frequency power supply switching cabinet;
Described main power source is that commutation inversion module in variable frequency power supply cabinet is powered through power distribution panel;
The outlet side of N number of conventional variable frequency power supply cabinet is that N number of electromagnetic mixing apparatus is powered through N number of double-throw disconnecting link respectively;
One end of N number of double-throw disconnecting link connects the outlet side of N number of conventional variable frequency power supply cabinet respectively, and the other end all connects the intermediate terminal of N+1 double-throw disconnecting link; The two ends of N+1 double-throw disconnecting link connect the outlet side of two variable frequency power supply cabinets for subsequent use respectively;
Described control power supply is that the control module in variable frequency power supply cabinet is powered;
Wherein N be more than or equal to 1 integer.
The described manual switchover frequency-converting power supply for electromagnetic mixing apparatus, also comprises power distribution and system industrial control cabinet; Circuit breaker and PLC is provided with in power distribution and system industrial control cabinet;
The circuit breaker of described control power supply in power distribution and system industrial control cabinet is that the control module in variable frequency power supply cabinet is powered;
The front end of the fuse in described variable frequency power supply cabinet is also provided with contactor; Closed and the disconnection of contactor are controlled by described PLC.
Contactor in described N number of conventional variable frequency power supply cabinet is connected with one end of the N number of circuit breaker in power distribution panel respectively, and the other end of N number of circuit breaker is connected to an O, and some O is connected with main power source through another circuit breaker; Contactor in described two variable frequency power supply cabinets for subsequent use is connected with one end of another two circuit breakers in power distribution panel respectively, and the other end of two circuit breakers is connected to a P, and some P is connected with main power source through another circuit breaker.
Described commutation inversion module comprises rectification circuit, energy storage filter circuit and inverter circuit;
Described inverter circuit is three-phase inverter bridge circuit; Each brachium pontis of three-phase inverter bridge circuit comprises two IGBT; The break-make of described IGBT is all controlled by described control module;
Described rectification circuit is three-phase bridge rectifier circuit.
Described control module comprises DSP or FPGA.
Described control module is connected with human-computer interaction module; Described human-computer interaction module is for arranging frequency and the amplitude of the three-phase electricity of inverter circuit output;
Described N=3.
Also power transfer module is provided with in power distribution and system industrial control cabinet, for being 24v, 15v, 5v or 3.3v by the voltage transitions of control power supply, then give the power supply of PLC, control module (DSP or FPGA) and human-computer interaction module (touch-screen).
Embodiment described in the utility model is only the description carried out preferred implementation of the present utility model; not the utility model design and scope are limited; under the prerequisite not departing from the utility model design philosophy; the various modification that in this area, engineers and technicians make the technical solution of the utility model and improvement, all should fall into protection range of the present utility model.
Claims (7)
1. for a manual switchover frequency-converting power supply for electromagnetic mixing apparatus, it is characterized in that, comprise main power source, control power supply, power distribution panel, N number of conventional variable frequency power supply cabinet, two variable frequency power supply cabinets for subsequent use and variable frequency power supply switch cabinet;
Multiple circuit breaker is provided with in described power distribution panel;
Conventional variable frequency power supply cabinet is identical with variable frequency power supply cabinet for subsequent use;
Be equipped with fuse, commutation inversion module and control module in each variable frequency power supply cabinet, described fuse is connected to the front end of commutation inversion module, and commutation inversion module is controlled by control module;
N+1 double-throw disconnecting link is provided with in described variable frequency power supply switching cabinet;
Described main power source is that commutation inversion module in variable frequency power supply cabinet is powered through power distribution panel;
The outlet side of N number of conventional variable frequency power supply cabinet is that N number of electromagnetic mixing apparatus is powered through N number of double-throw disconnecting link respectively;
One end of N number of double-throw disconnecting link connects the outlet side of N number of conventional variable frequency power supply cabinet respectively, and the other end all connects the intermediate terminal of N+1 double-throw disconnecting link; The two ends of N+1 double-throw disconnecting link connect the outlet side of two variable frequency power supply cabinets for subsequent use respectively;
Described control power supply is that the control module in variable frequency power supply cabinet is powered;
Wherein N be more than or equal to 1 integer.
2. the manual switchover frequency-converting power supply for electromagnetic mixing apparatus according to claim 1, is characterized in that, also comprises power distribution and system industrial control cabinet; Circuit breaker and PLC is provided with in power distribution and system industrial control cabinet;
The circuit breaker of described control power supply in power distribution and system industrial control cabinet is that the control module in variable frequency power supply cabinet is powered;
The front end of the fuse in described variable frequency power supply cabinet is also provided with contactor; Closed and the disconnection of contactor are controlled by described PLC.
3. the manual switchover frequency-converting power supply for electromagnetic mixing apparatus according to claim 2, it is characterized in that, contactor in described N number of conventional variable frequency power supply cabinet is connected with one end of the N number of circuit breaker in power distribution panel respectively, the other end of N number of circuit breaker is connected to an O, and some O is connected with main power source through another circuit breaker; Contactor in described two variable frequency power supply cabinets for subsequent use is connected with one end of another two circuit breakers in power distribution panel respectively, and the other end of two circuit breakers is connected to a P, and some P is connected with main power source through another circuit breaker.
4. the manual switchover frequency-converting power supply for electromagnetic mixing apparatus according to claim 1, is characterized in that, described commutation inversion module comprises rectification circuit, energy storage filter circuit and inverter circuit;
Described inverter circuit is three-phase inverter bridge circuit; Each brachium pontis of three-phase inverter bridge circuit comprises two IGBT; The break-make of described IGBT is all controlled by described control module;
Described rectification circuit is three-phase bridge rectifier circuit.
5. the manual switchover frequency-converting power supply for electromagnetic mixing apparatus according to claim 1, it is characterized in that, described control module comprises DSP or FPGA.
6. the manual switchover frequency-converting power supply for electromagnetic mixing apparatus according to any one of Claims 1 to 5, it is characterized in that, described control module is connected with human-computer interaction module; Described human-computer interaction module is for arranging frequency and the amplitude of the three-phase electricity of inverter circuit output.
7. the manual switchover frequency-converting power supply for electromagnetic mixing apparatus according to any one of Claims 1 to 5, is characterized in that, described N=3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498697.XU CN204794324U (en) | 2015-07-10 | 2015-07-10 | A manual switching variable frequency power supply system for electromagnetic stirring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498697.XU CN204794324U (en) | 2015-07-10 | 2015-07-10 | A manual switching variable frequency power supply system for electromagnetic stirring device |
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| CN204794324U true CN204794324U (en) | 2015-11-18 |
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| CN201520498697.XU Active CN204794324U (en) | 2015-07-10 | 2015-07-10 | A manual switching variable frequency power supply system for electromagnetic stirring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374756A (en) * | 2016-10-13 | 2017-02-01 | 开封市中南电器技术有限公司 | AC composite type high-voltage variable-frequency electric control equipment of lifting machine |
-
2015
- 2015-07-10 CN CN201520498697.XU patent/CN204794324U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374756A (en) * | 2016-10-13 | 2017-02-01 | 开封市中南电器技术有限公司 | AC composite type high-voltage variable-frequency electric control equipment of lifting machine |
| CN106374756B (en) * | 2016-10-13 | 2019-03-19 | 开封市中南电器技术有限公司 | Elevator exchanges compound high-pressure frequency-conversion control panel |
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