CN2757194Y - AC contactless point compensating voltage stabilizing power supply - Google Patents
AC contactless point compensating voltage stabilizing power supply Download PDFInfo
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- CN2757194Y CN2757194Y CN 200420112840 CN200420112840U CN2757194Y CN 2757194 Y CN2757194 Y CN 2757194Y CN 200420112840 CN200420112840 CN 200420112840 CN 200420112840 U CN200420112840 U CN 200420112840U CN 2757194 Y CN2757194 Y CN 2757194Y
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Abstract
The utility model relates to an AC contactless compensating voltage stabilized power supply. The utility model is only provided with a compensating transformer; a secondary side is provided with a plurality of compensation windings designed according to a binary system; the compensation windings are connected in series in a load of the stabilized power supply through many pairs of bidirectional thyristor elements; the switching-on and the switching-off of each pair of bidirectional thyristor elements make the corresponding compensation windings, namely compensating voltages accessed or removed; a primary side is only provided with one winding which is connected in parallel with the output end of a voltage regulator through two pairs of bidirectional thyristor elements; the switching-on and the switching-off of each pair of bidirectional thyristor elements correspond to the same phase or the opposite phase of the compensating windings, namely the compensating voltages and a power supply voltage. The two switching instructions come from a matched control circuit; the control circuit instructs the bidirectional thyristor elements to access or remove corresponding compensation through the discrimination, the counting memorization, the decoding and the power amplifying output of a special control circuit using a CMOS circuit as a main part according to three voltage signals of the upper limit value, the lower limit value and the intermediate value of the permissible variable range of the output voltage of the voltage stabilizer.
Description
Affiliated technical field
The utility model relates to a kind of alternating current steady voltage plug device.
Background technology
1. present, the compensation stabilized voltage supply of the AC step of selling on the market has a common ground, Here it is, and a stabilized voltage supply has many compensator transformers, their Secondary Winding promptly compensates between the voltage input end and voltage output end that winding is serially connected with stabilized voltage supply, and a winding is in parallel with power output end, the increase and decrease of bucking voltage is switched, the conversion of compensation polarity is all carried out at winding of compensator transformer, because the compensation winding is connected in the load circuit regularly, this just will produce very high superpotential switching moment inevitably in a winding, and the precision of voltage regulation is high more, compensation progression is many more, the no-load voltage ratio of compensator transformer is then big more, and the superpotential of switching the moment generation is also high more.Even install surge absorption device additional in winding side of compensator transformer, but still usually burn out switching device; Perhaps switch the superpotential of moment in order to reduction,, but cause waste of electric energy so again with the damage of minimizing to switching device in winding side of compensator transformer and the United Nations General Assembly's resistance.
2. interrelated data has been introduced a kind of Transformer of Binary Windings and Its stabilized voltage supply, and this transformer is design like this: its output winding is a fixedly winding, and the input winding is made up of by a plurality of windings that scale-of-two changes a main winding and voltage.Need only variation like this, these scale-of-two windings are added and subtracted switching, just can on the output winding, obtain the burning voltage that changes in the scope that is requiring with switch or bidirectional triode thyristor element according to input voltage.And scale-of-two winding progression is many more, and the precision of voltage regulation is high more.Obviously, the capacity of this stabilized voltage supply transformer must be greater than output capacity.
3. the stabilized voltage supply of above two kinds of forms all needs a kind ofly can satisfy the control system that main circuit switch to require and voltage stabilizing requires.A kind of form wherein is to take out higher limit, the lower limit alternating voltage sampled signal that the reflection output voltage is allowed variation range from output end of voltage stabilizer, take out the intermediate value alternating voltage sampled signal of reflection output voltage variation range from input end, deliver to programmable controller (PLC) and handle, send then compensation or voltage stabilized transformer winding switching device are commutated, increase and decrease the instruction of combination.Easily go though this control mode is simple, programmable controller (PLC) function waste costs an arm and a leg.
Summary of the invention
For fear of there being grade compensation type AC regulated power supply when compensator transformer once switches, can produce too high high voltage, and the capacity of its transformer of Transformer of Binary Windings and Its stabilized voltage supply must be greater than output capacity, thereby cause volume to increase, the cost problem of higher, the utility model provides a kind of interchange contactless compensated voltage regulator, though the capacity of the compensator transformer of this voltage stabilizer is similar with the compensation stabilized voltage supply of general commercially available AC step, general only is 1/3 of output capacity, but quantity has only one, and be a Transformer of Binary Windings and Its, not only can increase compensation progression, improve the precision of voltage regulation, reduce manufacturing cost, and the compensation winding can not produce too high high voltage when switching.Simultaneously, this stabilized voltage supply adopts is dedicated control system based on cmos circuit, and stable performance is with low cost.
The technical scheme that the utility model adopted is: a voltage stabilizer has only a compensator transformer, this compensator transformer secondary has a plurality of compensation windings by the scale-of-two design, they are by between many voltage input ends and voltage output end that the bidirectional triode thyristor element are serially connected with stabilized voltage supply, every grade of compensation winding switches it a pair of bidirectional triode thyristor element should be arranged, and makes its access or excision; This compensator transformer once only has a winding and voltage stabilizer output-parallel, and it also has two pairs of bidirectional triode thyristor elements, is used for the commutation switch operating of this winding.Being switched on or switched off of every pair of bidirectional triode thyristor element, corresponding compensation winding is that bucking voltage and supply voltage are same-phase or antiphase.
About these switching commands from its control circuit that matches.This control circuit takes out higher limit, the lower limit voltage signal that the reflection output voltage allows variation range from output end of voltage stabilizer, take out the intermediate value voltage signal of reflection output voltage variation range from input end, and after it is become the switching value signal, deliver to dedicated control circuit again based on cmos circuit, wherein, the intermediate value signal is delivered to and is added, subtracts the compensation up-down counter, makes one of them permission work, makes another forbid work; Higher limit, lower limit signal are delivered on the one hand and are added, subtract the compensation up-down counter, make counter allow to add compensation or subtract compensated pulse to import effective or invalid.On the other hand, they when noble potential with starting impulse generator 1 or pulse producer 2, and send pulse, deliver to that up-down counter of the work that wherein is allowed to through select gate, in memory compensation progression, the decoding of corresponding compensation progression output instruction bidirectional triode thyristor element behind power amplifier inserts or excises corresponding compensation winding.Obviously, said process is ongoing along with the variation of supply voltage and load, to such an extent as to therefore the bidirectional triode thyristor element is also constantly automatically carrying out the compensation of supply voltage skew the switching and the corresponding voltage of each compensation winding of compensation winding, thereby reach the purpose of output burning voltage.
The utlity model has following several useful effects:
1. the compensation winding of compensator transformer is at secondary, commutation is once, because of obstructed overload electric current in the compensation winding, the moment of therefore commutating only produces normal switching overvoltage at winding two ends, and can not produce the high voltage of the danger of Current Transformer Secondary open type during commutation.
2. compensator transformer becomes a multistage compensation winding by many single-stage compensation windings, has reduced volume, has reduced cost;
3. the compensation design of Windings becomes the scale-of-two formula.Obtain more multistage bucking voltage with less compensation winding, so the value of each grade bucking voltage can be very little, so, the precision of voltage regulation can improve a lot;
4. replaced the senior but expensive programmable controller (PLC) of function owing to designed dedicated control system based on cmos circuit, performance meets the demands, and the ratio of performance to price is good.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.
Fig. 1 is an embodiment main circuit schematic diagram.
In the drawings: Tm is that compensator transformer, S1-S8 are that compensation is a commutation bidirectional triode thyristor element with bidirectional triode thyristor element, S01-S04.
Fig. 2 is an embodiment control circuit schematic diagram
In the drawings: the chip used cmos circuit that is.U10 is that reverser, U11 are that OR circuit, U12 and U13, U20 are that AND circuit, U14 are that to subtract bucking voltage up/down binary counter, U15 be to add bucking voltage up/down binary counter, D19-ID22 and R37 to form an OR circuit.
Embodiment
From figure we as can be seen, Tm compensator transformer, its secondary side have four compensation windings, each compensation winding voltage press scale-of-two and is designed, they are connected between voltage input end and the voltage output end by S1-S8.When S1, S3, S5, S7 connection, S2, S4, S6, S8 disconnection, the compensation winding is access in.Otherwise when S1, S3, S5, S7 disconnection, S2, S4, S6, S8 connection, the compensation winding is cut.A winding of compensator transformer is by S01-S04 and output terminal and connect.When S01, S03 connection, S02, S04 disconnection, when the compensation winding inserted, its bucking voltage was identical with the supply voltage phase place, was addition therefore.Otherwise when S01, S03 disconnection, S02, S04 connection, when the compensation winding inserted, its bucking voltage was opposite with the supply voltage phase place, therefore subtracted each other.This shows, when this example changes between 167.5-272.5V when input voltage,, can obtain the burning voltage of 220V ± 1.6% at output terminal through over-compensation.
The voltage stabilizing automatic control circuit is the core of this alternating current steady voltage plug.Its primary features is: guarantee bucking voltage with an intermediate value for example 220V be the axle center, if upper voltage limit compensation point for example 220V+1.6% and lower voltage limit compensation point for example 220V-1.6%, and this compensation point voltage determine will on the value of minimum level bucking voltage for example the 3.5V in this example decide.220V then is that the change point of bucking voltage polarity is a reversal point.Around this principle, work as supply voltage in the drawings and be slightly larger than 220V, commutation signal HXD is " 1 ", bucking voltage is "+" polarity, its homophase noble potential instructs S01, S03 connection, S02, S04 to disconnect through power amplifier, simultaneously it also will subtract backoff counter U14 and block, and forbid counting, and its anti-phase electronegative potential will make and add backoff counter U15 and allow counting.If at this moment supply voltage is lower than lower limit compensation point voltage, then AHL is " 1 ", it makes U15 for allowing to add counting on the one hand, its starting impulse generator 1 again simultaneously, its first positive pulse by a series of or, and the door be sent to U15, U15 adds 1, exports noble potential simultaneously, connect through power amplifier instruction S2 disconnection, S1, first order compensation winding is access in.Therefore supply voltage is compensated the time, and enough as the bucking voltage value, then AHL becomes " 0 ".If supply voltage continues to reduce, compensation process will be proceeded.But when carrying out in the process power source change by descending then in rising trend, and make DHL become " 1 ", its starting impulse generator 2, its first positive pulse also by a series of or, and door be sent to U15, therefore U15 allows to subtract counting the time, and U15 subtracts 1, exports noble potential simultaneously, corresponding some connections among some disconnections in power amplifier instruction S1, S3, S5, S7, S2, S4, S6, the S8, and certain one-level compensation winding corresponding with it is cut.Certainly, the variation of supply voltage may make S2, S4, S6, S8 all disconnect, S1, S3, S5, S7 all connect, the compensation winding all is access in, this moment, Q0, Q1, Q2, the Q3 of U15 were " 1 ", U20 output becomes " 1 ", and it will forbid that adding count pulse enters U15, but not forbid that subtracting count pulse enters U15.D19-D22 and R37 form or door is forbidden subtracting count pulse and is entered U15 when Q0, Q1, Q2, the Q3 of U15 are " 0 ", but does not forbid that adding count pulse enters U15.By above-mentioned voltage compensation process when being not difficult to analyze the supply voltage inverse change.Thus, when supply voltage changes in restricted portion, the output voltage of power supply change follow with an intermediate value be the axle center, upwards be not higher than upper limit compensation point, be not less than the rule mark of lower limit compensation point downwards.
What present embodiment provided is a single-phase voltage-stabilized power supply circuit schematic diagram; As main circuit is become three-phase circuit, then this stabilized voltage supply has just become a three-phase voltage-stabilizing power supply; Three single-phase voltage-stabilized power supply circuits can also be lumped together and form a three-phase voltage-stabilizing power supply, be called phase-splitting pressure-adjusting type stabilized voltage supply.
Claims (2)
1. one kind exchanges contactless compensation stabilized voltage supply, it is characterized in that: it has only a compensator transformer, this compensator transformer secondary has a plurality of compensation windings by the scale-of-two design, they are by between many voltage input ends and voltage output end that the bidirectional triode thyristor element are serially connected with stabilized voltage supply, the logarithm of bidirectional triode thyristor element equates with the compensation number of windings, each switches on and off the bidirectional triode thyristor element, and corresponding each compensation winding is the access or the excision of bucking voltage; This compensator transformer once only has a winding, and it is by the two pairs of bidirectional triode thyristor elements and output end of voltage stabilizer parallel connection, being switched on or switched off of every pair of bidirectional triode thyristor element, and corresponding compensation winding is that bucking voltage and supply voltage are same-phase or antiphase.
2. the contactless compensation stabilized voltage supply of interchange according to claim 1, it is characterized in that: the commutation of a winding of compensator transformer and the switching command of second compensation winding from its control circuit that matches, this control circuit takes out the higher limit that the reflection output voltage allows variation range from output end of voltage stabilizer, the lower limit voltage signal, take out the intermediate value voltage signal of reflection output voltage variation range from input end, and after it is become the switching value signal, deliver to dedicated control circuit again based on cmos circuit, wherein, the intermediate value signal is delivered to and is added, subtract the compensation up-down counter, make one of them permission work, make another forbid work; Higher limit, lower limit signal are delivered on the one hand and are added, subtract the compensation up-down counter, making counter allow to add compensation or subtracting compensated pulse imports effective or invalid, on the other hand, they when noble potential with starting impulse generator 1 or pulse producer 2, and send pulse, deliver to that up-down counter of the work that wherein is allowed to through select gate, in memory compensation progression, the decoding of corresponding compensation progression output instruction bidirectional triode thyristor element behind power amplifier inserts or excises corresponding compensation winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420112840 CN2757194Y (en) | 2004-10-30 | 2004-10-30 | AC contactless point compensating voltage stabilizing power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200420112840 CN2757194Y (en) | 2004-10-30 | 2004-10-30 | AC contactless point compensating voltage stabilizing power supply |
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| CN2757194Y true CN2757194Y (en) | 2006-02-08 |
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| CN 200420112840 Expired - Fee Related CN2757194Y (en) | 2004-10-30 | 2004-10-30 | AC contactless point compensating voltage stabilizing power supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222915A (en) * | 2010-04-13 | 2011-10-19 | 王小兵 | String additional potential voltage regulation method for sine alternating-current electricity |
| CN102780445A (en) * | 2011-05-09 | 2012-11-14 | 王小兵 | Dual alternating current chopper speed regulation of wound-rotor asynchronous motor |
| CN109358680A (en) * | 2018-11-15 | 2019-02-19 | 湖南工业大学 | Three-phase ac voltage stabilizer |
| CN115097892A (en) * | 2022-08-13 | 2022-09-23 | 深圳市京泰荣电子有限公司 | Contactless voltage stabilizing circuit based on multi-stage compensation and circuit driving method |
-
2004
- 2004-10-30 CN CN 200420112840 patent/CN2757194Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222915A (en) * | 2010-04-13 | 2011-10-19 | 王小兵 | String additional potential voltage regulation method for sine alternating-current electricity |
| CN102222915B (en) * | 2010-04-13 | 2014-04-02 | 王小兵 | String additional potential voltage regulation method for sine alternating-current electricity |
| CN102780445A (en) * | 2011-05-09 | 2012-11-14 | 王小兵 | Dual alternating current chopper speed regulation of wound-rotor asynchronous motor |
| CN102780445B (en) * | 2011-05-09 | 2015-07-08 | 王小兵 | Dual alternating current chopper speed regulation of wound-rotor asynchronous motor |
| CN109358680A (en) * | 2018-11-15 | 2019-02-19 | 湖南工业大学 | Three-phase ac voltage stabilizer |
| CN109358680B (en) * | 2018-11-15 | 2020-10-30 | 湖南工业大学 | Three-phase AC voltage stabilizer |
| CN115097892A (en) * | 2022-08-13 | 2022-09-23 | 深圳市京泰荣电子有限公司 | Contactless voltage stabilizing circuit based on multi-stage compensation and circuit driving method |
| CN115097892B (en) * | 2022-08-13 | 2024-04-30 | 深圳市京泰荣电子有限公司 | Contactless voltage stabilizing circuit based on multistage compensation and circuit driving method |
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Addressee: Chen Shengkuan Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |