CN112542971A - Low-voltage regulator - Google Patents
Low-voltage regulator Download PDFInfo
- Publication number
- CN112542971A CN112542971A CN202011391767.3A CN202011391767A CN112542971A CN 112542971 A CN112542971 A CN 112542971A CN 202011391767 A CN202011391767 A CN 202011391767A CN 112542971 A CN112542971 A CN 112542971A
- Authority
- CN
- China
- Prior art keywords
- switch
- voltage
- low
- coils
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
Abstract
The invention provides a low-voltage regulator, which relates to the technical field of low-voltage regulation and comprises the following components: the public winding, series winding and voltage regulating switch, wherein, voltage regulating switch includes: the first end of the common winding is connected with a first voltage input end N and a first voltage output end N 'respectively, the second end of the common winding is connected with the first switch, the first switch is connected with a second voltage input end L, the first end of the second switch and the first end of the series winding respectively, and the second end of the series winding is connected with the second end of the second switch and the second voltage output end L' respectively.
Description
Technical Field
The invention relates to the technical field of low-voltage regulation, in particular to a low-voltage regulator.
Background
The low-voltage distribution network compares with well, high-voltage distribution network and transmits same many energy, and the electric current of circulation is the biggest in the circuit, and when low-voltage distribution lines is longer slightly, the voltage drop that produces will be too much on the circuit, and the voltage of user department will become low, and the low voltage uses the consumer can not normally work, increases motor current, and winding temperature risees, burns out the motor even when serious.
The on-load voltage-regulating distribution transformer with automatic voltage regulation can only ensure that the voltage of the starting point of the low-voltage distribution network is qualified, and the voltage of the terminal user with the long power supply radius of the low-voltage line is still too low, so that the problem of low voltage of the terminal user can be effectively solved by adopting the low-voltage regulator.
The current low-voltage regulator products comprise a compensation type alternating current voltage stabilizer, a non-contact alternating current voltage stabilizer and a neutral line voltage regulator: the compensation type voltage stabilizer carbon brush moving contact type voltage stabilizer has the defects of sliding point mechanical friction, ignition at a sliding point connecting point and the like; the contactless AC voltage stabilizer is controlled by regulating voltage via the on-state of IGBT and has the main disadvantages of complicated control, high cost and no economy. And the transformer in the two voltage regulators is in a working state for a long time, and large no-load loss and load loss exist. The central line voltage regulating mode is adopted, the number of turns of the common end winding is regulated, the material utilization rate is low, and the economical efficiency is low.
No effective solution has been proposed to the above problems.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a low voltage regulator, so as to alleviate the technical problem that the low voltage regulator using the neutral line voltage regulation technology has a low material utilization rate, resulting in a high cost of the low voltage regulator.
In a first aspect, an embodiment of the present invention provides a low voltage regulator, including: the common winding, series winding and voltage regulating switch, wherein, voltage regulating switch includes: the first end of the common winding is connected with a first voltage input end N and a first voltage output end N 'respectively, the second end of the common winding is connected with the first switch, the first switch is connected with a second voltage input end L, the first end of the second switch and the first end of the series winding respectively, and the second end of the series winding is connected with the second end of the second switch and the second voltage output end L' respectively.
Further, under the condition that the first switch is opened and the second switch is closed, the input voltage of the low-voltage regulator is equal to the output voltage of the low-voltage regulator.
Further, under the condition that the first switch is closed and the second switch is opened, the low-voltage regulator boosts an input voltage to obtain an output voltage, wherein a ratio between the input voltage and the output voltage is equal to a ratio between the number of coils of the common winding and a first target number, and the first target number is the sum of the number of coils of the common winding and the number of coils of the series winding.
Further, the voltage regulating switch further comprises: and a moving contact of the third switch is respectively connected with the second voltage output end L' and the second switch, and a fixed contact of the third switch is used for being connected with any tap in the series winding or the second end of the series winding.
Further, under the condition that the first switch is opened and the second switch is closed, the input voltage of the low-voltage regulator is equal to the output voltage of the low-voltage regulator.
Further, under the condition that the first switch is closed and the second switch is opened, the low-voltage regulator boosts the input voltage to obtain an output voltage, wherein a ratio between the input voltage and the output voltage is equal to a ratio between the number of coils of the common winding and a second target number, the second target number is the sum of the number of coils of the common winding and a first current number of coils of the series winding, the first current number of coils is the number of coils between a first end of the series winding and a first target tap, and the first target tap is any tap of the series winding.
Further, if the first switch is connected to a second target tap of the series winding and the fixed contact is connected to a third target tap, the low-voltage regulator performs voltage reduction on the input voltage to obtain an output voltage under the condition that the first switch is closed and the second switch is open, wherein the second target tap is any one tap of the series winding, the third target tap is any one tap between the second target tap and the first end of the series winding or the first end of the series winding, a ratio between the output voltage and the input voltage is a ratio between a third target number and the number of coils of the common winding, and the third target number is a difference between the number of coils of the common winding and a second current number of coils of the series winding, the second current number of coils is the number of coils between the second target tap and a third target tap.
Further, if the first switch is connected to a second target tap of the series winding and the stationary contact is connected to a fourth target tap, under the condition that the first switch is closed and the second switch is opened, the low-voltage regulator performs boosting processing on the input voltage to obtain output voltage, wherein the fourth target tap is any one of the second target tap and the second end of the series winding or the second end of the series winding, a ratio between the output voltage and the input voltage is a ratio between a fourth target number and the number of coils of the common winding, wherein the fourth target number is a sum of the number of coils of the common winding and a third current number of coils of the series winding, the third current number of coils is the number of coils between the second target tap and the fourth target tap.
Further, the first switch and the second switch are vacuum switches.
Further, the third switch is an air switch or an oil-immersed switch.
The low voltage regulator in an embodiment of the present invention comprises: the public winding, series winding and voltage regulating switch, wherein, voltage regulating switch includes: the low-voltage regulator in the application does not adopt a compensation type voltage stabilizer principle and electric brush regulation, does not have the defects of sliding point mechanical friction, ignition at a sliding point connecting point and the like, does not adopt electric power electronic devices such as IGBT and the like, is simple to control, and further achieves the aim of high material utilization rate compared with the low-voltage regulator for regulating voltage by the existing neutral line, thereby solving the problem of low material utilization rate of the existing low-voltage regulator utilizing the neutral line voltage regulation technology, the technical problem of high cost of the low-voltage regulator is caused, and the technical effect of reducing the manufacturing cost of the low-voltage regulator is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a first low-voltage regulator according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second low-voltage regulator according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a third voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a fourth voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a fifth voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating a sixth voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 9 is a schematic diagram illustrating a seventh voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 10 is a schematic diagram illustrating an eighth voltage regulation state of a second low-voltage regulator according to an embodiment of the present invention;
fig. 11 is a schematic diagram illustrating a ninth voltage regulation state of the second low-voltage regulator according to the embodiment of the present invention;
fig. 12 is a schematic diagram of a prior art low voltage regulator provided by an embodiment of the present invention;
fig. 13 is a schematic diagram of another prior art low voltage regulator according to an embodiment of the present invention;
fig. 14 is a schematic diagram of a third low-voltage regulator according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
according to an embodiment of the present invention, an embodiment of a low voltage regulator is provided, and fig. 1 is a schematic diagram of a low voltage regulator according to an embodiment of the present invention, as shown in fig. 1, the low voltage regulator includes: a common winding 10, a series winding 20 and a voltage regulating switch 30, wherein the voltage regulating switch 30 comprises: the first end of the common winding is connected with a first voltage input end N and a first voltage output end N 'respectively, the second end of the common winding is connected with the first switch, the first switch is connected with a second voltage input end L, the first end of the second switch and the first end of the series winding respectively, and the second end of the series winding is connected with the second end of the second switch and the second voltage output end L' respectively.
The low voltage regulator in an embodiment of the present invention comprises: the public winding, series winding and voltage regulating switch, wherein, voltage regulating switch includes: the low-voltage regulator in the application does not adopt a compensation type voltage stabilizer principle and electric brush regulation, does not have the defects of sliding point mechanical friction, ignition at a sliding point connecting point and the like, does not adopt electric power electronic devices such as IGBT and the like, is simple to control, and further achieves the aim of high material utilization rate compared with the low-voltage regulator for regulating voltage by the existing neutral line, thereby solving the problem of low material utilization rate of the existing low-voltage regulator utilizing the neutral line voltage regulation technology, the technical problem of high cost of the low-voltage regulator is caused, and the technical effect of reducing the manufacturing cost of the low-voltage regulator is achieved.
In the embodiment of the present invention, it is preferable that the first switch and the second switch are vacuum switches, and the voltage regulation is performed by using the vacuum switches, so that the load current is cut off by using the long-life maintenance-free vacuum switches, and the long life and the maintenance-free performance of the entire voltage regulation switch and the economical efficiency of the switches are realized.
In an embodiment of the invention, the input voltage of the low voltage regulator is equal to the output voltage of the low voltage regulator with the first switch open and the second switch closed.
Under the condition that the first switch is closed and the second switch is opened, the low-voltage regulator boosts the input voltage to obtain the output voltage, wherein the ratio of the input voltage to the output voltage is equal to the ratio of the number of the coils of the common winding to a first target number, and the first target number is the sum of the number of the coils of the common winding and the number of the coils of the series windings.
In the embodiment of the present invention, a second low voltage regulator is provided, as shown in fig. 2, in the second low voltage regulator, a third switch 33 is added on the basis of the first low voltage regulator, a moving contact of the third switch is respectively connected to the second voltage output terminal L' and the second switch, and a fixed contact of the third switch is used for being connected to any one tap in the series winding or the second end of the series winding.
Under the condition that the first switch is switched off and the second switch is switched on, the input voltage of the low-voltage regulator is equal to the output voltage of the low-voltage regulator.
Under the condition that the first switch is closed and the second switch is opened, the low-voltage regulator boosts the input voltage to obtain the output voltage, wherein the ratio of the input voltage to the output voltage is equal to the ratio of the number of coils of the common winding to a second target number, the second target number is the sum of the number of coils of the common winding and a first current number of coils of the series winding, the first current number of coils is the number of coils between a first end of the series winding and a first target tap, and the first target tap is any one of the multiple taps.
The second low-voltage regulator will be described below by taking the example of 1 tap number.
When the number of taps is 1, the second low-voltage regulator can boost the input voltage by two steps, and can be respectively set to boost by 5% and boost by 10%.
The low voltage regulator includes an autotransformer having a common winding and a series winding separately wound in the same winding direction. The number of common winding turns is for example 100, and the total number of turns of one series winding is for example 10, the taps are the middle of the series winding, 5 turns each. In addition, a voltage regulating switch is comprised of a first switch 31, a second switch 32 and a third switch 33.
The LN end is an input end, the L 'N' end is an output end, and the first switch 31 and the second switch 32 are controlled and linked by the same electromagnet; the third switch 33 is another oil-immersed switch controlled by an electromagnet.
When the voltage is normal, the low-voltage regulator is in a normal state, the L end is conducted through the second switch 32, the lower winding of the autotransformer cannot be excited due to the fact that the first switch 31 is disconnected, and the upper winding cannot be excited due to the fact that the upper winding is short-circuited through the second switch 32. The autotransformer quits operation without generating no-load and load loss. The third switch 33 now selects the series winding center tap.
When voltage regulation is needed, the first voltage regulation is to a first boosting gear position, namely a boosting 5% gear position, the state before action is shown in figure 3, then the first switch 31 is firstly disconnected to enter a transition state shown in figure 4, the end L is conducted with the end L' through the series winding of the autotransformer, then the first switch 31 is closed to enter a state shown in figure 5, the lower winding of the autotransformer is also put into a circuit to realize boosting, and the condition that the circuit is not disconnected exists in the process, so that the continuity of power supply is maintained.
When the pressure is required to be increased from the first pressure increasing gear to the second gear, the pressure is increased by 10%. In the pre-boost state shown in fig. 6, the first switch 31 is first opened to disable the autotransformer, and the voltage input L is connected to the L' output through the center tap of the series winding and the third switch 33 to maintain power continuity, as shown in fig. 7. The first switch 31 is then switched on into the state shown in fig. 8, where the series winding loop and its third switch 33 are shorted. The third switch 33 is then adjusted to the end of the series winding into the state shown in figure 9. In the adjusting process, no current passes through the loop, so that large electric arc ablation contacts cannot be generated, and the oil quality of the third switch is carbonized. The first switch 31 is then opened and the input L is conducted through the series winding of the autotransformer and the third switch 33 to the output L', while maintaining the continuity of the power supply, and enters the state shown in fig. 10. The first switch 31 is then closed to switch the common winding of the autotransformer into operation, so that the voltage regulator is in the second position of autotransformer regulation, and the state shown in fig. 11 is entered. The process of shifting the second gear back to the first gear is the reverse process, and is not described in detail in this embodiment of the application.
In the low voltage regulator of the prior art, the voltage regulation is mainly performed at the center line N, as shown in fig. 12, when the voltage is required to be boosted by 5%, the third switch 33 selects the lower part of the common winding, and when the voltage is boosted by 10%, the third switch 33 selects the middle part of the common winding. Low-voltage regulator among the prior art is when the pressure regulating 10%, and this application is the same with prior art's low-voltage regulator at the input voltage, the effect of stepping up is also the same, but prior art's low-voltage regulator's public winding only has 50 circles to bear input voltage, and there is 100 circles public winding to bear input voltage in this application, can know by transformer relevant knowledge, as shown in fig. 13, prior art's low-voltage regulator's circle voltage is this application 2 times, under the condition that the magnetic flux density is the same in the iron core, the autotransformer iron core that needs prior art's low-voltage regulator is this application 2 times, for example, common winding and series winding are total 110 circles in this application, then prior art's low-voltage regulator needs 105 circles, the difference is not very big. If both are made of iron cores of the same cross section, the low voltage regulator of the prior art requires a total number of turns of 210 turns. Therefore, the low voltage regulator in the prior art requires higher manufacturing costs.
In the embodiment of the present invention, a third low-voltage regulator is proposed on the basis of the second low-voltage regulator, and the third low-voltage regulator is shown in fig. 14, taking the case that the number of taps is 1 as an example.
In the embodiment of the present invention, if the first switch is connected to the second target tap of the series winding and the stationary contact of the third switch is connected to the third target tap, the low-voltage regulator performs voltage reduction processing on the input voltage to obtain output voltage under the condition that the first switch is closed and the second switch is opened, wherein the second target tap is any one of a plurality of taps of the series winding, the third target tap is any one of a tap between the second target tap and the first end of the series winding or the first end of the series winding, a ratio between the output voltage and the input voltage is a ratio between the number of the third targets and the number of coils of the common winding, the third target number is the difference between the number of coils of the common winding and the second current number of coils of the series winding, and the second current number of coils is the number of coils between the second target tap and the third target tap.
If the first switch is connected with a second target tap of the series winding and a static contact of the third switch is connected with a fourth target tap, the low-voltage regulator boosts the input voltage to obtain an output voltage under the condition that the first switch is closed and the second switch is opened, wherein the fourth target tap is any one tap between the second target tap and the second end of the series winding or the second end of the series winding, the ratio between the output voltage and the input voltage is the ratio between the fourth target number and the number of coils of the common winding, the fourth target number is the sum of the number of coils of the common winding and the third current number of coils of the series winding, and the third current number of coils is the number of coils between the second target tap and the fourth target tap.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A low voltage regulator, comprising: the common winding, series winding and voltage regulating switch, wherein, voltage regulating switch includes: the first end of the common winding is connected with a first voltage input end N and a first voltage output end N 'respectively, the second end of the common winding is connected with the first switch, the first switch is connected with a second voltage input end L, the first end of the second switch and the first end of the series winding respectively, and the second end of the series winding is connected with the second end of the second switch and the second voltage output end L' respectively.
2. The low voltage regulator of claim 1, wherein an input voltage of the low voltage regulator is equal to an output voltage of the low voltage regulator with the first switch open and the second switch closed.
3. The low voltage regulator of claim 1, wherein the low voltage regulator boosts an input voltage to obtain an output voltage when the first switch is closed and the second switch is open, wherein a ratio between the input voltage and the output voltage is equal to a ratio between the number of coils of the common winding and a first target number, and the first target number is a sum of the number of coils of the common winding and the number of coils of the series winding.
4. The low voltage regulator of claim 1, wherein the voltage regulator switch further comprises:
and a moving contact of the third switch is respectively connected with the second voltage output end L' and the second switch, and a fixed contact of the third switch is used for being connected with any tap in the series winding or the second end of the series winding.
5. A low voltage regulator according to claim 4,
under the condition that the first switch is switched off and the second switch is switched on, the input voltage of the low-voltage regulator is equal to the output voltage of the low-voltage regulator.
6. The low voltage regulator according to claim 4, wherein when the first switch is turned on and the second switch is turned off, the low voltage regulator boosts an input voltage to obtain an output voltage, wherein a ratio between the input voltage and the output voltage is equal to a ratio between the number of coils of the common winding and a second target number, the second target number is a sum of the number of coils of the common winding and a first current number of coils of the series winding, the first current number of coils is a number of coils between a first end of the series winding and a first target tap, and the first target tap is any one tap of the series winding.
7. The low voltage regulator according to claim 4, wherein if the first switch is connected to a second target tap of the series winding and the fixed contact is connected to a third target tap, the low voltage regulator performs a voltage reduction process on an input voltage to obtain an output voltage when the first switch is turned on and the second switch is turned off, wherein the second target tap is any one of the taps of the series winding, the third target tap is any one of the taps between the second target tap and the first end of the series winding or the first end of the series winding, a ratio between the output voltage and the input voltage is a ratio between a third target number and a number of coils of the common winding, wherein the third target number is a difference between the number of coils of the common winding and a second current number of coils of the series winding, the second current number of coils is the number of coils between the second target tap and a third target tap.
8. A low voltage regulator according to claim 7, wherein if said first switch is connected to a second target tap of said series winding and said stationary contact is connected to a fourth target tap, under the condition that the first switch is closed and the second switch is opened, the low-voltage regulator performs boosting processing on the input voltage to obtain output voltage, wherein the fourth target tap is any one of the second target tap and the second end of the series winding or the second end of the series winding, a ratio between the output voltage and the input voltage is a ratio between a fourth target number and the number of coils of the common winding, wherein the fourth target number is a sum of the number of coils of the common winding and a third current number of coils of the series winding, the third current number of coils is the number of coils between the second target tap and the fourth target tap.
9. A low voltage regulator according to claim 1,
the first switch and the second switch are vacuum switches.
10. A low voltage regulator according to claim 4,
the third switch is an air switch or an oil-immersed switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011391767.3A CN112542971A (en) | 2020-12-01 | 2020-12-01 | Low-voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011391767.3A CN112542971A (en) | 2020-12-01 | 2020-12-01 | Low-voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112542971A true CN112542971A (en) | 2021-03-23 |
Family
ID=75015380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011391767.3A Pending CN112542971A (en) | 2020-12-01 | 2020-12-01 | Low-voltage regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112542971A (en) |
-
2020
- 2020-12-01 CN CN202011391767.3A patent/CN112542971A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8436602B2 (en) | Voltage compensation circuit | |
| CN1965276A (en) | Device for regulating electrical voltage | |
| CN108206656A (en) | Voltage regulator system and application method | |
| CN103840729A (en) | Start and transition branch of contactless on-load automatic voltage control distribution transformer | |
| CN213426044U (en) | Low-voltage regulator | |
| CN212907375U (en) | Voltage regulating circuit of transformer tap switch | |
| CN111404172B (en) | Mixed type dynamic reactive power compensation system and method based on high-impedance transformer | |
| CN112542971A (en) | Low-voltage regulator | |
| US9124087B2 (en) | Arc suppression circuit | |
| JPH02502955A (en) | transformer | |
| CN104699151A (en) | Voltage regulator, voltage regulating system and voltage regulating method | |
| Exposito et al. | Solid-state tap changers: New configurations and applications | |
| CN115346780A (en) | Transformer on-load tap changer capable of striding gear adjustment | |
| CN110634660A (en) | Voltage regulating coil and transformer for increasing one time voltage regulating gear | |
| CN101777866B (en) | High-voltage power-saving voltage regulator | |
| CN211790774U (en) | Mixed type dynamic reactive power compensation system based on high-impedance transformer | |
| CN204857421U (en) | No electric arc on -load voltage -regulating transformer | |
| Bashi | Microcontroller-based fast on-load semiconductor tap changer for small power transformer | |
| US4023090A (en) | Zagreb electrical circuit | |
| CN202422974U (en) | On-load voltage regulation transformer | |
| CN210722703U (en) | Equipment for reducing current of carbon brush in low-voltage lifting device | |
| CN204189592U (en) | The constant flux voltage regulation structure of superhigh pressure self coupling power transformer | |
| CN112750603A (en) | Voltage regulating method of high-voltage side of autotransformer, transformer body structure and autotransformer | |
| CN109921428B (en) | Three-phase reactor excitation on-load voltage regulating system | |
| CN214336472U (en) | Electric furnace transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |