CN1375918A - Non-stop continuous stepped AC voltage regulator - Google Patents
Non-stop continuous stepped AC voltage regulator Download PDFInfo
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- CN1375918A CN1375918A CN 02117659 CN02117659A CN1375918A CN 1375918 A CN1375918 A CN 1375918A CN 02117659 CN02117659 CN 02117659 CN 02117659 A CN02117659 A CN 02117659A CN 1375918 A CN1375918 A CN 1375918A
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Abstract
This invention relates to an AC continuous step-by-step voltage without switch-off modulation device contains a control device and voltage modulation device with the characteristics: series contacts of voltage modulation winding W211-213, W221-223 and W231-233 on each basic excitation winding W210, W220, and W230 are voltage modulation operation nodes controlled by contactors M21, M23, M25 and M27, form each voltage modulation device. The outer end of resistors R11-13, R21-23 and R31-31 connected with taps of each voltage modulation winding are transition contacts of voltage modulation to realize the voltage modulation of continuous step-by-step without switch-off or through modes by the change-over-switch SK2 or the automatic circuit controlling each voltage modulation device switched by the transition contact bridge.
Description
Technical field
The present invention relates to a kind of voltage adjusting device, particularly a kind of non-stop continuous stepped AC voltage regulator.
Background technology
The voltage adjusting device of introducing in discloseder in recent years patent documentations changes the number of turn of adjusting autotransformer excitation winding (or claiming common winding) more into and changes output voltage.This method makes the current ratio load current of control circuit operation reduce greatly, reduce greatly thereby making controls cost, it is easy and convenient that the manufacturing of control device also becomes, so this method is subjected to the generally attention of industrial quarters, corresponding battery saving arrangement and compensation arrangement and voltage stabilization and regulation device also have been subjected to paying attention to and have used.Said apparatus is adjusted the method for the excitation winding number of turn, be excitation winding several pressure regulation windings of connecting mostly, when adjusting voltage at every turn, adopt the way of the pressure regulation winding that inserts or excise one group or several groups series connection step by step to change the pressure regulation ratio, for load current when adjusting voltage does not interrupt will disconnecting energized circuit earlier, exciting current is opened circuit, and load directly links to each other with power supply source by the output winding that is the small inductor state, has realized that load does not have a power failure; But pressure drop is very little on the output winding of this moment series connection, and the magnitude of voltage of output voltage during by the some pressure regulation ratio that disconnects before the excitation jumps back to complete no better than input voltage; After this, when inserting new excitation winding access point excision or insert new pressure regulation winding, when changing to new pressure regulation ratio, output voltage by the full voltage of input again amplitude of saltus step export to new pressure regulation ratio.In adjustment process, twice saltus step takes place before and after the output voltage, this saltus step meeting brings adverse effect to load.
Summary of the invention
The purpose of this invention is to provide a kind of non-stop continuous stepped AC voltage regulator, this device is under the condition that load is not cut off the power supply, the pressure regulation ratio boosts for the rising step by step of energy continuous stepped (or reduction) step-down pressure regulation ratio or rising step by step (or reduction) when the power supply change in voltage is big, and when not needing pressure regulation, realize direct mode operation, output voltage is kept within the limits prescribed.
The object of the present invention is achieved like this: a kind of non-stop continuous stepped AC voltage regulator, it comprises control device and regulator.Control device comprises: manually with automatic control transformation switch (SK
1), bypass contactor (M
00); Mode switch contactor (M
11, M
12), manual control transformation switch (SK
2), the automatic control circuit.But regulator is the autotransformer of the pressure regulation of a special coiling, in phase three-wire three (or four lines) or single-phase autotransformer, on its core formula iron core, be wound with the output winding that is in series with load and corresponding base excitation winding and the pressure regulation winding of series connection with it; The pressure regulation winding can be to be connected on respectively on output winding or the base excitation winding, promptly when exporting the winding pressure regulation with pressure regulation windings in series (W on the output winding that power supply and load are in series
113～W
118), and when in the excitation winding pressure regulation with pressure regulation windings in series (W on excitation winding
211～213W
221～223W
231～233), the pressure regulation winding is characterized in that: series connection is on the same separately iron core of above-mentioned pressure regulation limit winding mutually for head and the tail, and the contact of its series connection is the pressure regulation working node, and these nodes are subjected to Regulation Control contactor (M
21, M
23, M
25, M
27) or manual change-over switch (SK
2, SK
3, SK
4, SK
5) control each self-closing and form separately regulator; A tap is arranged, an external resistor (R in the tap in every pressure regulation winding
1～6, R
11～13, R
21～23, R
31～33), another end points of resistor is adjusted the transition contact as voltage, and these transition contacts are subjected to bridge contactor (M
22, M
24, M
26) or manual change-over switch (SK
2, SK
3, SK
4, SK
5) be controlled in the pressure regulation process resistor and change to switch by transition contact short circuit bridge successively in parallel with the node that will disconnect and will connect and insert (or excision) one group of pressure regulation winding, be converted to the regulator of new pressure regulation ratio; In whole transient process, each moment all possesses a transition contact and works in regulating circuit, the transition contact was all deactivated after transition was finished, has only the work of pressure regulation working node, can overcurrent thereby guaranteed to be switched winding, load and the excitation stream that can not cut off the power supply, output voltage is significantly saltus step not, the pressure regulation ratio is fallen (or going up) ladder stably, has realized the continuous stepped pressure regulation that do not have a power failure; When voltage detecting circuit (not drawing among the figure) detects output voltage and exceeds the scope of permission, voltage adjusting device will be automatically conversion voltage regulation ratio (or manually), increase step by step or reduce step-down (or boosting) ratio, make output voltage meet the requirement of load; Be provided with the delay of automatic control pressure regulation thresholding and time in the automatic control circuit, guarantee the circuit steady operation; Mode switch contactor (M
11, M
12) be connected between output winding and the excitation winding, just changed the lifting pattern of regulator when connecting the connection that changes output winding and excitation winding respectively; The output winding of 3-phase autotransformer divides two parts series connection (W
111～112, W
121～122, W
131～132) respectively on adjacent two iron cores of core formula iron core, (M like this
11, M
12) just changed the lifting pattern of regulator when connect changing the connection of output winding and adjacent two-phase excitation winding respectively; When input voltage meets requiring of output voltage, do not need step-down and boost, at this moment (M
11, M
12) disconnect, regulator is a direct mode operation by bypass; (M
00) contact is in parallel with autotransformer three-phase output winding respectively, when being controlled at direct mode operation with the output short circuit in winding of autotransformer.
For reaching economic electrification and improving the effect of power supply quality, can design multistage voltage regulation, each step can change between ± 1%～± 5% according to pressure regulation precision and power-supply fluctuation scope, and total ascending, descending pressure ratio rate can change in 1%～20% scope.
For the manual switch pressure regulation is conveniently carried out, change a social system a kind of change over switch (SK especially
2, SK
3, SK
4, SK
5), it by be the center with (00) position along the circumference left-right symmetric equidistantly be arranged on the insulating body fixed contact (1) and along with the axle (7) that is installed in the matrix center synchronously moving contact (5) of rotation form, moving contact (5) is affixed by conductive arm (4) and collecting brush (2) to be same electric conductor, collecting brush (2) is gone up at collector ring (3) and is slided, moving contact (5) is that the switch common junction is passed through collector ring (3) UNICOM external circuit, and each fixed contact (1) is the tapping point of switch; Its architectural feature is: moving contact (5) a pair of adjacent two fixed contacts in office (1) are gone up when sliding, there is short time two fixed contact (1) short circuit in parallel to connect with moving contact (5) simultaneously, and when moving contact (5) is aimed at arbitrary fixed contact (1), with adjacent both sides fixed contact (1) mutual insulating; Change over switch can be simply connected, duplex or three.
Advantage of the present invention is: when the power supply change in voltage is big, can be implemented in that load is not cut off the power supply and output voltage does not have under the condition of fluctuation, rising step by step or reduction that can continuous stepped (or step-down) pressure regulation ratio that boosts, and can realize that when not needing pressure regulation direct mode operation is with the regulator bypass, output voltage is kept within the limits prescribed, improved power supply quality.
Description of drawings
Fig. 1 is the hand switch control circuit schematic diagram of single phase circuit excitation winding of the present invention pressure regulation;
Fig. 2 is the hand switch control circuit schematic diagram of the single phase circuit output winding pressure regulation of another embodiment of the present invention;
Fig. 3 is the winding connection circuit diagram of three-phase circuit excitation winding of the present invention pressure regulation;
Fig. 4 is the automatic and manual control circuit schematic diagram that the present invention adopts;
Fig. 5 is the winding connection circuit diagram of single phase circuit excitation winding of the present invention pressure regulation;
Fig. 6 is the hand switch control circuit schematic diagram of three-phase circuit excitation winding of the present invention pressure regulation;
Fig. 7 is the changeover contact floor map of the change over switch that adopts of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
At first, see also Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 are respectively the embodiment of pressure regulation of single phase circuit excitation winding and output winding pressure regulation hand switch control circuit, use manual change-over switch SK
4, SK
5Directly switch the winding pressure regulation, the hand switch control circuit of its principle and the pressure regulation of three-phase circuit excitation winding mutually roughly the same.SK among Fig. 2
5The position rotates counterclockwise and is decompression mode thus; The position clockwise rotates and is boost mode thus.In Fig. 3 and Fig. 4, winding W
111, W
112W
121, W
122W
131, W
132Be the output winding that is in series with load, on two adjacent iron cores of autotransformer core formula iron core, R, S, T are the power supply input, U respectively
1Representative input phase voltage, r, s, t are the output that exports load to, U
2Representative output phase voltage, bypass contactor M
00Contact with output winding in parallel, mode switch contactor M
11, M
12Corresponding contact be connected between autotransformer output winding and the excitation winding M like this
11, M
12Just changed the lifting pattern of regulator when connecting the connection that changes output winding and adjacent two-phase excitation winding respectively, M
11, M
12When all disconnecting is direct mode operation, M when direct mode operation
00Contact will export short circuit in winding, winding W
210, W
220, W
230Be the base excitation winding, winding W
211～213, W
221～223, W
231～233For being connected on the pressure regulation winding on each base excitation winding, its contact of connecting mutually is a pressure regulation working node (271,272,273; 251,252,253; 231,232,233; 211,212,213) by pressure regulation contactor M
27, M
25, M
23, M
21Control is connected respectively and is formed regulator separately, and the tap in the pressure regulation winding is connected to resistance R respectively
11～13, R
21～23, R
31～33, resistance outer end contact is respectively 261,241,221; 262,242,222; 263, the 243, the 223rd, pressure regulation transition contact, they are subjected to bridge contactor M
26, M
24, M
22Control, resistor short circuit bridge successively in parallel with the node that will disconnect and will connect changes and switches one group of pressure regulation winding of access (or excision) in the pressure regulation process, is converted to the regulator of different separately pressure regulation ratios; In whole transient process, each moment all possesses a transition contact and works in regulating circuit, the transition contact was all deactivated after transition was finished, can overcurrent thereby guaranteed to be switched winding, load and the excitation stream that can not cut off the power supply, output voltage is significantly saltus step not, and the pressure regulation ratio is fallen (or going up) ladder reposefully, has realized the continuous stepped pressure regulation that do not have a power failure; SK
1Be manual and automatic change-over, SK
2Be the special-purpose duplex change over switch that rotates synchronously, when manually controlling, control the connecting and disconnecting of relevant contactor with this switch.
1, manual work explanation:
During manual work, SK
1Put manually, all contactor is by the 220V ac power supply, by switch S K
2Switch energising and outage.
(1) straight-through (bypass) mode of operation: U
H+ Δ U
H＞U
1＞U
H-Δ U
H, suppose energising at the beginning of hand switch put 00 position, i.e. bypass channel state is after the power supply energising, because switch S K
2～2Effect have only M
00Electricity is arranged, have only output winding W this moment
111, W
112W
121, W
122W
131, W
132Be connected between power supply and the load, and by M
00Short circuit, thus autotransformer by bypass outside the electric circuit, power supply voltage directly is added in the load, if this moment power supply voltage U
1Be positioned at the desired scope of load (as requiring output voltage U
2=U
H± Δ U
H, following as example), then do not need switch is done any operation, keep this state and get final product.
(2) step-down mode of operation: U
1＞U
H+ Δ U
HIn straight-through mode of operation, make U as finding input voltage to raise
2＞U
H+ Δ U
H, then need to change circuit over to decompression mode work, clockwise rotate switch S K this moment
2Get final product.In the step-down mode of operation, SK
2Rotation be reversible.
(3) mode of operation: the U that boosts
1＜U
H-Δ U
H, under straight-through mode of operation, if input voltage U takes place
1Descend and cause U
2＜U
H-Δ U
H, then need to change circuit over to boost mode work, as long as with SK
2Rotate counterclockwise and get final product.In the mode of operation of boosting, SK
2Rotation also be reversible.
2, job description automatically:
SK
1Place automatically, which contactor energized contactor differentiates by automatic control circuit according to the detection of voltage detecting circuit (not drawing among the figure), makes circuit working at desirable regulator then.The desired voltage that the imagination electric requires is U
2=U
H± Δ U
H, U
HBe ideal set value, Δ U
HBe the permissible variation value.So at input voltage U
1Different conditions under, the automatic control circuit can be selected different pressure regulation patterns, satisfies the requirement of load.
(1) direct mode operation: U
H+ Δ U
H＞U
1＞U
H-Δ U
HThe time, circuit is selected direct mode operation, Y
00Energized, M
00Energising, short circuit output winding makes supply voltage directly be added to load, and output voltage equates that with input voltage autotransformer is by bypass.
(2) decompression mode: U
1＞U
H+ Δ U
H, circuit is selected decompression mode, Y
00Outage, M
00Outage, contact disconnects; Y
11Energising, M
11Switch on its contact is connected, and regulator is operated in decompression mode; And according to U
2With U
H± Δ U
HContrast difference select finally to insert which pressure regulation contactor (M
21, M
23, M
25, M
27).Be provided with the delay of action thresholding and time in the automatic control circuit, at U
2With U
H± Δ U
HRelation whether select the changing voltage regulation, its transfer process and order with manually be the same, be continuous stepped can saltus step, one by one to the stepped change of being close to, up to satisfying U
2At U
H± Δ U
HTill in the scope.In decompression mode with U
1Variation, the circuit adjustment with manually similar be reversible.
(3) boost mode: U
1＜U
H-Δ U
H, circuit is selected boost mode, Y
00, Y
11Outage, M
00, M
11Outage, Y
12Energized, M
12Energising, its contact is connected, and regulator is operated in boost mode; According to U
2With U
H± Δ U
HContrast difference select finally to insert which pressure regulation contactor (M
21, M
23, M
25, M
27).Thresholding is the same with time delay and decompression mode, and its work transition status and decompression mode are roughly the same.
In automatic control line design Cheng Zaichu when energising, be direct mode operation always, avoids that circuit set is improper to cause load overvoltage or under-voltage.After the energising, it will be according to power supply U
1State enter the buck or boost pattern automatically.
Consult Fig. 6 again, it is to use manual change-over switch SK
3～1, SK
3～2, SK
3～3Directly switch the Application Example of winding pressure regulation, can finish step-down, straight-through, boost mode conversion or inverse transform successively by three change over switches of special use as seen from the figure, the regulator of the continuous stepping pressure regulation that realized easily constantly being electrically connected.
Fig. 7 is the changeover contact floor map of change over switch, and wherein (1) is fixed contact, and be the center with (00) position arranges along the circumference left-right symmetric, and spacing is 18 °, routine among the figure (0---7) (00) (+0--+7) totally 17 be the tapping point of switch; Moving contact (5) is affixed by conductive arm (4) and collecting brush (2) to be same electric conductor, rotates synchronously with axle (7), and 288 ° of slewing areas are stopped by stop link stopper (6), can not cross the position; Moving contact (5) aims at 00, ± 1, ± 3, ± 5, ± have during 7 positions retainer spring to bump pearl nest (8) in the location, and when moving contact ± 0, ± 2, ± 4, ± during 6 positions just slip tide over; Collecting brush (2) is gone up sliding contact at collector ring (3), and moving contact (5) is that the common junction of change over switch is drawn contact (not shown) connection external circuit by collector ring (3); The feature of change over switch is: moving contact (5) is long-pending with the relative contact of fixed contact (1) to be: guarantee that any adjacent two fixed contacts (1) have the time of short circuit in parallel in moving contact (5) slides rotation process thereon, moving contact (5) is connected (moving contact covers two fixed contact parts) with two fixed contacts (1) simultaneously, and when moving contact (5) and a certain fixed contact (1) align connection, guarantee and adjacent two fixed contacts (1) mutual insulating again, the not short circuit of enough spacings is arranged, also discharge off.This switch can be simply connected, duplex or three.
Claims (6)
1, a kind of non-stop continuous stepped AC voltage regulator, it comprises control device and regulator, control device comprises: bypass contactor (M
00), mode switch contactor (M
11, M
12), manual and automatic change-over (SK
1), manual change-over switch (SK
2) and automatic control circuit, it is characterized in that, but regulator is the autotransformer of the pressure regulation of a special coiling, on the core formula iron core of phase three-wire three or single-phase autotransformer, be wound with the output winding (W that connects with load separately
111, W
112W
121, W
122W
131, W
132) and corresponding base excitation winding (W
210, W
220, W
230), simultaneously, at the pressure regulation winding (W that is wound with the homophase coiling of connecting mutually more than a group on the same iron core
113～118, W
211～213, W
221～223, W
231～233), described pressure regulation winding is connected on respectively on output winding or the excitation winding, and the contact of its series connection is the pressure regulation working node, by Regulation Control contactor (M
21, M
23, M
25, M
27) or manual change-over switch (SK
2, SK
3, SK
4, SK
5) control each self-closing of each node and form regulator separately, being provided with an above tap in each pressure regulation winding, each tap is connected to a resistor (R
1～6, R
11～13, R
21～33, R
31～33), the resistor outer end is the transition contact, is subjected to bridge contactor (M
22, M
24, M
26) or manual change-over switch (SK
2, SK
3, SK
4, SK
5) control, resistor short circuit bridge successively in parallel with the node that will disconnect and will connect changes and switches one group of pressure regulation winding of access (or excision) in the pressure regulation process, is converted to the regulator of new pressure regulation ratio.
2, device according to claim 1 is characterized in that, the output winding of described autotransformer divides two parts series connection (W
111---W
112W
121---W
122W
131---W
132), respectively on adjacent two iron cores of core formula iron core, mode switch contactor (M
11, M
12) be connected between the output winding and excitation winding of autotransformer, conversion is connected excitation winding and series voltage-regulating winding control regulator is converted to step-down, boosts, direct mode operation, bypass contactor (M respectively
00) in parallel with autotransformer three-phase output winding respectively, when direct mode operation with its short circuit.
3, device according to claim 1 is characterized in that, described pressure regulation ratio can change by continuous stepped on a plurality of ladders, and each ladder can change in ± 1%～± 5% scope.
4, device according to claim 1 is characterized in that, total ascending, descending pressure ratio rate can change in 1%～20% scope.
5, device according to claim 1 is characterized in that, described manual change-over switch (SK
21～22) (SK
31～33, SK
41～42, SK
51～52), equidistantly be arranged in the fixed contact (1) on the insulating body and form along the circumference left-right symmetric by being the center with being installed in the moving contact (5) that matrix central shaft (7) rotates synchronously with 00, moving contact (5) is affixed by conductive arm (4) and collecting brush (2) to be same electric conductor, collecting brush (2) is gone up at collector ring (3) and is slided, moving contact (5) aim at (00, ± 1, ± 3, ± 5, ± 7) have retainer spring to bump pearl nest (8) location during the position, and when moving contact (± 0, ± 2, ± 4, ± 6) during the position just slip tide over; Moving contact (5) is stopped that by stopper (6) moving contact (5) is by collector ring (3) UNICOM external circuit.
6, device according to claim 1 is characterized in that, described change over switch can be simply connected, duplex or three a switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021176590A CN1152466C (en) | 2002-05-14 | 2002-05-14 | Non-stop continuous stepped AC voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021176590A CN1152466C (en) | 2002-05-14 | 2002-05-14 | Non-stop continuous stepped AC voltage regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1375918A true CN1375918A (en) | 2002-10-23 |
| CN1152466C CN1152466C (en) | 2004-06-02 |
Family
ID=4744482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021176590A Expired - Fee Related CN1152466C (en) | 2002-05-14 | 2002-05-14 | Non-stop continuous stepped AC voltage regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1152466C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075007A (en) * | 2011-01-19 | 2011-05-25 | 西安盟创电器有限公司 | Switching switch device |
| CN109215993A (en) * | 2018-08-06 | 2019-01-15 | 湖南中良电气设备有限公司 | Energy-economic transformer |
| CN109921428A (en) * | 2019-04-08 | 2019-06-21 | 上海国祺能源有限公司 | A kind of three-phase reactor excitation on-load voltage regulation system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295855C (en) * | 2005-08-23 | 2007-01-17 | 王振民 | Microcomputer control automatic pressure regulating device |
-
2002
- 2002-05-14 CN CNB021176590A patent/CN1152466C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075007A (en) * | 2011-01-19 | 2011-05-25 | 西安盟创电器有限公司 | Switching switch device |
| CN102075007B (en) * | 2011-01-19 | 2013-06-12 | 西安盟创电器有限公司 | Switching switch device |
| CN109215993A (en) * | 2018-08-06 | 2019-01-15 | 湖南中良电气设备有限公司 | Energy-economic transformer |
| CN109921428A (en) * | 2019-04-08 | 2019-06-21 | 上海国祺能源有限公司 | A kind of three-phase reactor excitation on-load voltage regulation system |
| CN109921428B (en) * | 2019-04-08 | 2023-08-01 | 上海国祺能源有限公司 | Three-phase reactor excitation on-load voltage regulating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1152466C (en) | 2004-06-02 |
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