CN108054924A - A kind of small-power three-phase alternating voltage self-checking device - Google Patents
A kind of small-power three-phase alternating voltage self-checking device Download PDFInfo
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- CN108054924A CN108054924A CN201711330649.XA CN201711330649A CN108054924A CN 108054924 A CN108054924 A CN 108054924A CN 201711330649 A CN201711330649 A CN 201711330649A CN 108054924 A CN108054924 A CN 108054924A
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- voltage
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- transformer
- power
- normally open
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- 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
- H02M5/02—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 without intermediate conversion into dc
- H02M5/32—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 without intermediate conversion into dc by dynamic converters
- H02M5/34—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 without intermediate conversion into dc by dynamic converters using mechanical contact-making and -breaking parts
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of small-power three-phase alternating voltage self-checking device, including transformer adjustable plate and detection control panel two parts；Wherein, transformer adjustable plate includes three from coupling transformer and relay normally open contact, each three-phase voltage is connected from coupling transformer input pin, output pin is corresponding with relay normally open contact, synchronization is each only attracted with one of relay normally open contact from the output pin of coupling transformer and connects；The detection control panel includes AC/DC power modules, voltage transformer, liquid crystal display HMI, microcontroller and relay drive circuit.One kind provided by the invention can be in the case where keeping three-phase voltage phase invariant, according to input voltage and the auto-transformer ratio being pre-designed, automatically adjust gear, make arbitrarily mutually to reach target voltage values in three-phase voltage, so as to meet the small-power three-phase alternating voltage self-checking device of some unconventional electric device demands.
Description
Technical field
The present invention relates to a kind of voltage regulating devices, and in particular to a kind of small-power three-phase alternating voltage automatic adjustment dress
It puts, belongs to technical field of circuit control.
Background technology
At present, in Enterprise Power System, three-phase alternating voltage is generally 380V, is not changing three-phase alternating voltage phase
In the case of, to obtain the three-phase alternating voltage of other voltage class, typically using three-phase regulator.
Existing three-phase regulator power, volume and weight are all bigger, it is necessary to manually rotate the handle ability of pressure regulator
Voltage is adjusted, and this kind of pressure regulator can only adjust the voltage of three-phase simultaneously, it is impossible to individually adjust the voltage of a certain phase.
However in practical applications, three-phase alternating voltage output power is smaller needed for some electric devices, voltage class
Demand is unique, just needs a kind of small, light-weight, voltage flexible adjustment three-phase alternating voltage automatic adjustment dress at this time
It puts and these electric devices is powered or tested.Existing three-phase regulator can not use.
The content of the invention
The defects of it is an object of the invention to overcome the prior art, provide it is a kind of can make in three-phase voltage arbitrary mutually reaching
To target voltage values, so as to meet the small-power three-phase alternating current of the unique unconventional electric device demand of voltage class demand
Voltage self-checking device.
What the present invention was realized in：
A kind of small-power three-phase alternating voltage self-checking device, including transformer adjustable plate and detection control panel two parts；
Wherein, transformer adjustable plate includes three from coupling transformer and relay normally open contact, each from coupling transformer
Include an input pin, a certain number of output pins and zero curve, three input pins from coupling transformer are distinguished
Connect U, V, W phase of three-phase voltage, the quantity of relay normally open contact and three total quantitys from the output pin of coupling transformer
Equal and one-to-one corresponding, synchronization, each from the output pin of coupling transformer and one of relay normally open contact
Connection is attracted, each from the voltage that coupling transformer is exported by relay normally open contact and the input pin from coupling transformer
The phase of the voltage of input is identical；
The detection control panel includes AC/DC power modules, voltage transformer, liquid crystal display HMI, microcontroller and relay
Driving circuit.Wherein AC/DC power modules are powered for control circuit in detection control panel, the U of voltage transformer detection input,
V, W three-phase voltages, and testing result is transmitted to connected microcontroller, output can be set on liquid crystal display HMI
The desired voltage values of each phase of three-phase voltage, and setting value is transferred to microcontroller, microcontroller is according to input
The desired voltage values of each phase of U, V, W three-phase voltage at end and the three-phase voltage of output, to judge three from coupling transformation
Relay normally open contact corresponding with which three is attracted device respectively, and will determine that result is transferred to relay drive circuit, relay
Device driving circuit then controls corresponding relay normally open contact to be attracted.
Further scheme is：
The quantity of the output pin contained from coupling transformer is equal.
Further scheme is：
The quantity of the output pin from coupling transformer is 5.
Further scheme is：
Described three share a zero curve from coupling transformer.
Further scheme is：
The desired voltage values of each phase of the three-phase voltage of the output may be the same or different.
Further scheme is：
Single-phase AC voltage 220V is converted to DC voltage by the AC/DC power modules.
One kind provided by the invention can be in the case where keeping three-phase voltage phase invariant, according to input voltage and in advance
The auto-transformer ratio of design automatically adjusts gear, makes arbitrarily mutually to reach target voltage values in three-phase voltage, so as to meet
The small-power three-phase alternating voltage self-checking device of some unconventional electric device demands.
Description of the drawings
Fig. 1 is auto-transformer schematic diagram；
Fig. 2 is transformer adjustable plate circuit diagram；
Fig. 3 is detection control panel circuit diagram.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated.
A kind of small-power three-phase alternating voltage self-checking device, including transformer adjustable plate（As shown in Figure 2）And inspection
Observing and controlling making sheet（As shown in Figure 3）Two parts；
As shown in Figure 2, as one embodiment of the present of invention, transformer adjustable plate provided by the invention is mainly by 3 self couplings
Transformer T1~T3 and 15 relay normally open contact K1~K15 compositions.
Wherein the structure of auto-transformer as shown in Figure 1, from coupling transformer include an input pin IN, five it is defeated
Go out pin OUT1~OUT5 and zero curve N.Output voltage on output pin OUT1~OUT5 corresponds to the input of input pin IN
Voltage has fixed ratio value n1~n5, which designs according to actual demand, and the ratio value is not limited to this implementation
5 kinds of example arbitrarily can increase or reduce in the case where auto-transformer skeleton allows.It is if more smart in order to obtain
True output voltage values, then the quantity of preset output pin and the quantity of its corresponding ratio value will be increased.
The zero curve N of auto-transformer T1~T3 is connected together as the input and output zero curve of three-phase voltage, self coupling transformation
The input pin IN of device T1~T3 connects U, V, W phase of enterprise's three-phase voltage respectively, and the output pin OUT1 of auto-transformer~
OUT5 connects 5 relay normally open contacts respectively, and auto-transformer T1 corresponds to relay normally open contact K1~K5, auto-transformer
T2 corresponds to relay normally open contact K6~K10, and auto-transformer T3 corresponds to relay normally open contact K11~K15, synchronization,
Only there are one the A phases that relay contact actuation is connected to output terminal, relay normally open contacts in relay normally open contact K1~K5
The B phases for being connected to output terminal are only attracted in K6~K10 there are one relay contact, are only had in relay normally open contact K11~K15
One relay contact actuation is connected to the C phases of output terminal, the phase phase of output voltage A, B, C and input voltage U, V, W three-phase
Together, and the zero curve N of shared input.
As shown in Figure 3, detecting control panel mainly includes AC/DC power modules, voltage transformer, liquid crystal display HMI, micro-control
Device MCU and relay drive circuit processed.Wherein single-phase AC voltage 220V is converted to DC voltage as inspection by AC/DC power modules
Control circuit provides power supply, U, V, W three-phase voltage of voltage transformer detection input in observing and controlling making sheet, and testing result is sent
To microcontroller.Liquid crystal display HMI can set the desired voltage values of output voltage A, B, C three-phase, microcontroller respectively
MCU judges which three relay be attracted according to the output voltage desired value of setting and the three-phase voltage input value detected, after
Electrical apparatus driving circuit provides enough driving energies for relay coil actuation.KA1~KA15 is relay coil in attached drawing 3,
Relay normally open contact K1~K15 in respective figure 2 in transformer adjustable plate respectively.
Technical scheme is described in more detail with a more specific embodiment below.
Set the input electricity that the output voltage on output pin OUT1~OUT5 of auto-transformer corresponds to input pin IN
The ratio value of pressure is respectively n1=2, n2=1.5, n3=1, and n4=0.8, n5=0.5, the phase voltage of three-phase voltage U/V/W is 220V,
It is that 350V, B phase are that 220V, C phase are 130V that target output voltage A phases are set on liquid crystal display, the mesh of microcontroller calculating and setting
The ratio of mark output voltage and the input voltage detected, A are Kb=220/220 compared to value compared to value Ka=350/220=1.59, B
=1, C are Kc=130/220=0.59 compared to value, then respectively by Ka, Kb, Kc and known auto-transformer output input ratio value
N1~n5 is compared, final choice and itself immediate numerical value.
In this particular embodiment, Ka is between n1 and the numerical value of n2, and（Ka-n2）<（n1-Ka）, kb=n3, Kc
Between n4 and the numerical value of n5 and（Kc-n5）<(n4-Kc), therefore A phases select n2 and are attracted the corresponding relays of output pin OUT2
Device normally opened contact K2, B phase selects n3 and is attracted the corresponding relay normally open contact K8 of output pin OUT3, and C phases select n5 and inhale
Close the corresponding relay normally open contact K15 of output pin OUT5.
It in the above example, can be according to actual demand, in self coupling transformation if being intended to improve the degree of regulation of output voltage
Device design initial stage correspondingly increases the output way of transformer, the density for adjusting ratio value that microcontroller is enable to select
Bigger is more nearly the ratio value of target voltage and input voltage.
It should be noted that since the voltage of auto-transformer output in the present invention is all the contact portion by relay
Load is connected to device output terminal, therefore above-mentioned voltage regulating device is limited be subject to relay contact capacity and can only be applicable in
In small-power occasion.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (6)
1. a kind of small-power three-phase alternating voltage self-checking device, it is characterised in that controlled including transformer adjustable plate and detection
Plate two parts；
Wherein, transformer adjustable plate includes three from coupling transformer and relay normally open contact, each from coupling transformer
Include an input pin, a certain number of output pins and zero curve, three input pins from coupling transformer are distinguished
Connect U, V, W phase of three-phase voltage, the quantity of relay normally open contact and three total quantitys from the output pin of coupling transformer
Equal and one-to-one corresponding, synchronization, each from the output pin of coupling transformer and one of relay normally open contact
Connection is attracted, each from the voltage that coupling transformer is exported by relay normally open contact and the input pin from coupling transformer
The phase of the voltage of input is identical；
The detection control panel includes AC/DC power modules, voltage transformer, liquid crystal display HMI, microcontroller and relay
Driving circuit；Wherein AC/DC power modules are powered for control circuit in detection control panel, the U of voltage transformer detection input,
V, W three-phase voltages, and testing result is transmitted to connected microcontroller, output can be set on liquid crystal display HMI
The desired voltage values of each phase of three-phase voltage, and setting value is transferred to microcontroller, microcontroller is according to input
The desired voltage values of each phase of U, V, W three-phase voltage at end and the three-phase voltage of output, to judge three from coupling transformation
Relay normally open contact corresponding with which three is attracted device respectively, and will determine that result is transferred to relay drive circuit, relay
Device driving circuit then controls corresponding relay normally open contact to be attracted.
2. small-power three-phase alternating voltage self-checking device according to claim 1, it is characterised in that：
Described three quantity from the output pin that coupling transformer contains is equal.
3. small-power three-phase alternating voltage self-checking device according to claim 2, it is characterised in that：
The quantity of the output pin from coupling transformer is 5.
4. small-power three-phase alternating voltage self-checking device according to claim 1, it is characterised in that：
Described three share a zero curve from coupling transformer.
5. small-power three-phase alternating voltage self-checking device according to claim 1, it is characterised in that：
The desired voltage values of each phase of the three-phase voltage of the output are identical or different.
6. small-power three-phase alternating voltage self-checking device according to claim 1, it is characterised in that：
Single-phase AC voltage is converted to DC voltage by the AC/DC power modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711330649.XA CN108054924A (en) | 2017-12-13 | 2017-12-13 | A kind of small-power three-phase alternating voltage self-checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711330649.XA CN108054924A (en) | 2017-12-13 | 2017-12-13 | A kind of small-power three-phase alternating voltage self-checking device |
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| Publication Number | Publication Date |
|---|---|
| CN108054924A true CN108054924A (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711330649.XA Pending CN108054924A (en) | 2017-12-13 | 2017-12-13 | A kind of small-power three-phase alternating voltage self-checking device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969558Y (en) * | 2006-08-02 | 2007-10-31 | 成都首光科技发展有限公司 | Power-saving device fit for low-voltage three phase electric appliance |
| CN202971231U (en) * | 2012-10-30 | 2013-06-05 | 苏州工业园区和顺电气股份有限公司 | Power equipment for supplying power to fan |
| US20140111119A1 (en) * | 2009-12-30 | 2014-04-24 | Leviton Manufacturing Co., Inc. | Phase control with adaptive parameters |
| CN104486897A (en) * | 2014-11-19 | 2015-04-01 | 宋宏伟 | Voltage regulation control device for inductive ballast |
-
2017
- 2017-12-13 CN CN201711330649.XA patent/CN108054924A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969558Y (en) * | 2006-08-02 | 2007-10-31 | 成都首光科技发展有限公司 | Power-saving device fit for low-voltage three phase electric appliance |
| US20140111119A1 (en) * | 2009-12-30 | 2014-04-24 | Leviton Manufacturing Co., Inc. | Phase control with adaptive parameters |
| CN202971231U (en) * | 2012-10-30 | 2013-06-05 | 苏州工业园区和顺电气股份有限公司 | Power equipment for supplying power to fan |
| CN104486897A (en) * | 2014-11-19 | 2015-04-01 | 宋宏伟 | Voltage regulation control device for inductive ballast |
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Application publication date: 20180518 |
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| RJ01 | Rejection of invention patent application after publication |