CN106452123A - AC voltage regulation device - Google Patents
AC voltage regulation device Download PDFInfo
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- CN106452123A CN106452123A CN201510492836.2A CN201510492836A CN106452123A CN 106452123 A CN106452123 A CN 106452123A CN 201510492836 A CN201510492836 A CN 201510492836A CN 106452123 A CN106452123 A CN 106452123A
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- China
- Prior art keywords
- alternating voltage
- adjusting apparatus
- voltage adjusting
- pulse width
- bridge rectifier
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Abstract
The invention discloses an AC voltage regulation device, and especially a high-flexibility AC voltage regulation device. The AC voltage regulation device at least comprises a pulse width modulator, a one-way thyristor connected with the pulse width modulator, and a bridge rectifier connected with an AC power supply and a load. The load switch is controlled by connecting the bridge rectifier and the load in series and adding the one-way thyristor to the DC output end of the bridge rectifier. The one-way thyristor is controlled by the pulse width modulator with frequency higher than that of the AC power supply to adjust the proportion of the load power, and proportion control is relatively easy. The cost and wiring time can be saved. The one-way thyristor is prevented from being switched on at a high-voltage time point of the power supply, and the service life of the one-way thyristor is prolonged.
Description
Technical field
The present invention relates to power adjustment technology field, in particular to one kind with bridge rectifier
Device adds single-phase lock to control the alternating voltage adjusting apparatus of load switch, to provide required ripple
Shape simultaneously improves power factor, thus strengthening its practicality.
Background technology
Much need to carry out the adjustment of voltage or power, such as lamp using the equipment of alternating current power supply
Thermoregulator in speed regulator in dimmer in tool, motor, heating equipment etc..Existing
The triggers circuit of dimmer, speed regulator or thermoregulator is designed with many kinds, such as using lock stream
Element (thyristor), lock fluid element can be thyristor (SCR) or three pole locks
Fluid (Triac).The invention of lock fluid element makes early application resistance change load electricity
Produced by stream, big power consumption shortcoming is improved greatly.
As shown in figure 1, this lock fluid element 11 can be directly used in high power circuit, as
The key element of alternating current power supply 13 electric current of regulating load 12, common application have fan,
Electric heater etc..For electric heater, for making it have the automatic work(heating or keeping constant temperature
Can, it is provided with digital temperature control circuit at present to adjust the size of current of heater, heater
Using powerful power supply, and the power supply of general digital temperature control circuit belongs to small-power, therefore should
Digital temperature control circuit must be by the power regulation module containing lock fluid element 11 and heater
In ac power supply circuit series connection, as long as so suitably triggering the triggering of power regulation module
End, can control its angle of flow size, and then determines heater current size and heating-up temperature
Height.
However, common power mode transfer block includes an analog trigger circuitry 15, make this mould
Intend triggers circuit 15 and trigger this lock fluid element 11, therefore power mode transfer block must be touched by simulation
Signal and driven and trigger lock fluid element 11, because this digital temperature control circuit cannot be straight
Connect driving power adjusting module it is necessary to the digital analog converter adding a high cost could turn
It is changed to the simulation trigger of high accurancy and precision, thus the electric current efficiently controlling heater is big
Little, therefore not only cost up, and circuit deployment cost also relative increase it is necessary to seek
Solution.
In addition, as shown in Figure 2 and Figure 3, the waveform of general alternating current power supply (AC) is
Sine wave (SIN wave), needs to control load switch or power proportions using electronic component,
Aforesaid lock fluid element is usually used (as thyristor (SCR) or three pole thyristors
(Triac)) controlling load, such as power consumption proportion to be adjusted, then will be with phase cut
Controlling, such as Fig. 2 is the state of ON time 2ms to mode, and Fig. 3 is ON time
The state of 8ms, but this kind of practice can change the waveform of script alternating current power supply, and waveform is changed into
Incomplete sine wave, leads to power factor to reduce, simultaneously because needing to calculate angle of flow,
Therefore ratio controls also less easily；
In other words, due to use at present lock fluid element (as thyristor (SCR) or
Three pole thyristors (Triac)) come to do voltage or power adjustment way be respectively present circuit
Configure more complicated, high cost and control the problems such as be difficult, cause power factor not good, and meeting
Cause the electricity charge to increase, even power equipment can be caused impaired further, therefore need to be changed further
Kind.
Voltage based on above-mentioned existing alternating current power supply or the shortcoming of power adjustment, inventor
Adhere to the exploitation of correlative technology field for many years and making experience, and adjust for existing alternating voltage
The deficiency of engagement positions carries out Improvement, through constantly studying for a long time, finally successfully provides one
Plant alternating voltage adjusting apparatus, to overcoming the bad caused inconvenience of existing Adjustment effect.
Content of the invention
Therefore, present invention is primarily targeted at providing a kind of simple alternating voltage of framework to adjust
Engagement positions, can carry out the regulation of alternating voltage or electric current, without making phase cut, energy
Enough hoisting power factors and effectively the reduction electricity charge probability impaired with equipment.
Also, another main purpose of the present invention is to provide a kind of application more flexibly to exchange
Voltage adjusting device, can easily supply the watt level of digital control circuit adjustment load, with
Strengthen its practicality.
In order to achieve the above object, the invention provides a kind of alternating voltage adjusting apparatus, wrap
Contain：
One pulse width modulation device；
One unidirectional thyristor, it is connected with pulse width modulation device；
One bridge rectifier, its power input is connected with an alternating current power supply, and this bridge-type is whole
The ac output end of stream device and a load form electrical connection, and the other end of this load connects to be handed over
Stream power supply forms electric loop, and the DC output end of this bridge rectifier connects this pulse width
Modulator and this unidirectional thyristor, the signal input part of this bridge rectifier and aforementioned unidirectional lock
The outfan of fluid connects.
In one embodiment of this invention, this alternating voltage adjusting apparatus passes through digital form line
Property control this pulse width modulation device with numeral adjustment exchange electricity output.
In one embodiment of this invention, this unidirectional thyristor is transistor.
In one embodiment of this invention, this unidirectional thyristor is golden oxygen field-effect transistor.
In one embodiment of this invention, this unidirectional thyristor is the double junction crystal of gate insulation
Pipe.
In one embodiment of this invention, it is provided between this unidirectional thyristor and bridge rectifier
At least one first high frequency filter.
In one embodiment of this invention, it is provided with least one between this bridge rectifier and load
Individual second high frequency filter.
In one embodiment of this invention, this alternating current power supply is provided with a power-supply filter.
In one embodiment of this invention, this first high frequency filter, this second High frequency filter
Device and this power-supply filter are formed in parallel with least one capacitor by least one inducer.
Thereby, by above-mentioned technological means, the alternating voltage adjusting apparatus profit that the present invention provides
With bridge rectifier and load in series, and bridge rectifier DC output end add unidirectional
Thyristor controlling load switch, using the pulse width modulation device higher than ac power frequency
Unidirectional thyristor is controlled to be relatively easy to adjust bearing power ratio, ratio control, can
Cost-effective and wiring time simultaneously reaches energy-saving effect；Cooperation zero phase checking circuit sets again
Meter, also can avoid unidirectional thyristor to turn in power supply high-voltage time point, can extend unidirectional lock
The service life of fluid, and improve the convenience of operation, therefore the alternating voltage that the present invention provides
Adjusting apparatus are substantially better than existing at aspects such as raising power factor, motility and practicality
Alternating voltage adjusting apparatus.
For enabling auditor to further appreciate that composition, feature and the other purposes of the present invention, with
Lower lift the present invention some preferred embodiments, and coordinate schema describe in detail as after, allow simultaneously
Those skilled in the art can be embodied as according to this specification.
Brief description
Fig. 1 is the control schematic diagram of existing thyristor switch and phase cut；
Fig. 2～Fig. 3 is that the waveform cutting of the different ON times of existing thyristor is shown
It is intended to；
The configuration diagram of the alternating voltage adjusting apparatus that Fig. 4 provides for the present invention；
The circuit of the alternating voltage adjusting apparatus preferred embodiment that Fig. 5 provides for the present invention is joined
Put schematic diagram；
The electricity of another preferred embodiment of alternating voltage adjusting apparatus that Fig. 6 provides for the present invention
Road configuration schematic diagram.
Description of reference numerals：11- lock fluid element；12- loads；13- alternating current power supply；15- mould
Intend triggers circuit；50- pulse width modulation device；The unidirectional thyristor of 55-；56- first high frequency
Wave filter；60- bridge rectifier；62- second high frequency filter；80- alternating current power supply；85-
Power-supply filter；90- loads.
Specific embodiment
The invention provides a kind of alternating voltage adjusting apparatus, legend of enclosing shows the tool of the present invention
In body embodiment and its component, all about front with rear, left and right, top and bottom, on
Portion and bottom and level and vertical reference, are only used for conveniently being described, not limit
Its component also non-is limited to any position or direction in space by the present invention processed.Schema and explanation
Specified size in book, when can without departing from scope of the presently claimed invention, according to
The design of the specific embodiment of the present invention is changed with demand.
The framework of the alternating voltage adjusting apparatus that the present invention provides is as shown in figure 4, it at least wraps
Containing a pulse width modulation device 50 (Pulse Width Modulation, PWM), a list
To thyristor 55 and a bridge rectifier 60, for loading 90 with an alternating current power supply 80 and
Form electrical connection；
Preferred embodiment such as Fig. 4, Fig. 5 institute of the alternating voltage adjusting apparatus that the present invention provides
Show, this pulse width modulation device 50 is a kind of element converting analog signals into pulse wave,
The dutycycle of its pulse wave can change according to the size of analogue signal, and this pulse width modulation device
5 have FREQUENCY CONTROL function or simple ac power switch work(more than ac power frequency
Energy, wherein one signal output part of this pulse width modulation device 50 and aforementioned unidirectional thyristor
55 signal input part connects, and this unidirectional thyristor 55 can be transistor (bipolar
Junction transistor, BJT), golden oxygen field-effect transistor (MOSFET) OR gate extremely exhausted
The double junction transistor (IGBT) of edge, but the outfan of this unidirectional thyristor 55 passes through at least one
First high frequency filter 56 connects to the signal input part of aforementioned bridge rectifier 60, and single
To the power input of thyristor 55, bridge-type is connected by aforementioned first high frequency filter 56 whole
The DC output end of stream device 60, the ac output end of this bridge rectifier 60 passes through further
At least one second high frequency filter 62 connects load 90, and a power supply filter is passed through in load 90 again
Ripple device 85 connects to this alternating current power supply 80, in addition, this alternating current power supply 80 connects to bridge-type
The power input of commutator 60.Wherein first high frequency filter 56 and the filter of the second high frequency again
Ripple device 62 and power-supply filter 85 are by multiple inducers (inductor) and multiple capacitors
(Capacitor) it is formed in parallel；
Thus the present invention can control unidirectional thyristor by pulse width modulation device 50
55, to adjust the power proportions of load 90, and utilize the first high frequency filter 56 and second
It is still sine wave that high frequency filter 62 and power-supply filter 85 make output waveform, in this way
The transformator produced or power regulator can also pass through this arteries and veins of digital form Linear Control
Rushing width modulation device 50, thus reaching the purpose of numeral adjustment exchange electricity output, making this
Bright application is more flexible.
Thereby, it is good and be not required to that the alternating voltage adjusting apparatus that the present invention provides achieve motility
Make phase cut.
By said structure design, the present invention when actually used, as shown in Figure 4, Figure 5,
In practical operation, operator can make flowing mode or direct manual manipulation by numeral online
The mode of this pulse width modulation device 50, using the frequency control of this pulse width modulation device 50
Function processed, controls this unidirectional thyristor 55 to carry out loading 90 power proportions adjustment, and makes
Output waveform is still sine wave, controls without using phase cut mode, further up to
The purpose of numeral adjustment exchange electricity output, makes the application of the present invention more flexible.
Again when the present invention is applied in non-high-frequency circuit, as shown in fig. 6, wherein this is unidirectional
The outfan of thyristor 55, input directly can connect the defeated of this bridge rectifier 60 respectively
Enter end, outfan, and other inputs of this bridge rectifier 60, outfan then to distinguish
It is directly connected to alternating current power supply 80 and load 90, thus the present invention is the same passes through pulse
Width modulation device 50 controlling unidirectional thyristor 55, to adjust the power proportions of load 90.
Via preceding description, the alternating voltage adjusting apparatus that the present invention provides use bridge rectifier instead
Device 60 and load 90 series connection, and bridge rectifier 60 DC output end add unidirectional
Thyristor 55 loads 90 switches to control, using the pulse width higher than ac power frequency
Controlling unidirectional thyristor 55 to adjust bearing power ratio, ratio controls relatively modulator 50
For easy, such as filter higher plus the first high frequency filter 56, the second high frequency filter 62
Frequency-portions, then output waveform is still sine wave.In addition, the present invention can directly supply numeral control
Circuit processed using it is not necessary to control leading of lock fluid element using extra digital analog converter
Current flow angle size, can cost-effective and wiring time, thus equally reaching energy-saving effect；Also,
Cooperation zero phase checking circuit design also can avoid unidirectional thyristor 55 in power supply high-voltage time
Point conducting, can extend the service life of unidirectional thyristor 55；
In addition, the present invention can be finer and smoother output rate control (programmable), or single
Pure is made switch and uses.Again after power filter, input voltage, electric current still can maintain
SIN ripple, is effectively improved power factor, makes the adjustment of the present invention more flexible, and more real
The property used.
Claims (9)
1. a kind of alternating voltage adjusting apparatus are it is characterised in that comprise：
One pulse width modulation device；
One unidirectional thyristor, it is connected with pulse width modulation device；
One bridge rectifier, its power input is connected with an alternating current power supply, and this bridge-type is whole
The ac output end of stream device and a load form electrical connection, and the other end of this load connects to be handed over
Stream power supply forms electric loop, and the DC output end of this bridge rectifier connects this pulse width
Modulator and this unidirectional thyristor, the signal input part of this bridge rectifier and described unidirectional lock
The outfan of fluid connects；
Unidirectional thyristor is controlled by this pulse width modulation device, to adjust bearing power ratio
Example.
2. alternating voltage adjusting apparatus according to claim 1 it is characterised in that
This alternating voltage adjusting apparatus pass through this pulse width modulation device of digital form Linear Control with
Numeral adjustment exchange electricity output.
3. alternating voltage adjusting apparatus according to claim 1 it is characterised in that
This unidirectional thyristor is transistor.
4. alternating voltage adjusting apparatus according to claim 1 it is characterised in that
This unidirectional thyristor is golden oxygen field-effect transistor.
5. alternating voltage adjusting apparatus according to claim 1 it is characterised in that
This unidirectional thyristor is the double junction transistor of gate insulation.
6. alternating voltage adjusting apparatus according to claim 1 it is characterised in that
It is provided with least one first high frequency filter between this unidirectional thyristor and bridge rectifier.
7. alternating voltage adjusting apparatus according to claim 1 it is characterised in that
It is provided with least one second high frequency filter between this bridge rectifier and load.
8. alternating voltage adjusting apparatus according to claim 1 it is characterised in that
This alternating current power supply is provided with a power-supply filter.
9. the alternating voltage adjusting apparatus according to claim 6 or 7 or 8, it is special
Levy and be, this first high frequency filter, this second high frequency filter and this power-supply filter are equal
It is formed in parallel with least one capacitor by least one inducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510492836.2A CN106452123A (en) | 2015-08-12 | 2015-08-12 | AC voltage regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510492836.2A CN106452123A (en) | 2015-08-12 | 2015-08-12 | AC voltage regulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106452123A true CN106452123A (en) | 2017-02-22 |
Family
ID=58093527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510492836.2A Withdrawn CN106452123A (en) | 2015-08-12 | 2015-08-12 | AC voltage regulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106452123A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503425A (en) * | 2002-11-08 | 2004-06-09 | 盈正豫顺电子股份有限公司 | Mixing type virtual work compensator |
| US20100187914A1 (en) * | 2009-01-26 | 2010-07-29 | Geneva Cleantech Inc. | Methods and apparatus for power factor correction and reduction of distortion in and noise in a power supply delivery network |
| CN103633853A (en) * | 2012-08-25 | 2014-03-12 | 江苏东能电力科技有限公司 | Industrial single-phase alternating current chopped mode voltage reduction and adjustment circuit and method thereof |
-
2015
- 2015-08-12 CN CN201510492836.2A patent/CN106452123A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503425A (en) * | 2002-11-08 | 2004-06-09 | 盈正豫顺电子股份有限公司 | Mixing type virtual work compensator |
| US20100187914A1 (en) * | 2009-01-26 | 2010-07-29 | Geneva Cleantech Inc. | Methods and apparatus for power factor correction and reduction of distortion in and noise in a power supply delivery network |
| CN103633853A (en) * | 2012-08-25 | 2014-03-12 | 江苏东能电力科技有限公司 | Industrial single-phase alternating current chopped mode voltage reduction and adjustment circuit and method thereof |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170222 |