CN204858987U - There is not broad width of isolation alternating voltage modulating device based on frequency transformer coupling - Google Patents
There is not broad width of isolation alternating voltage modulating device based on frequency transformer coupling Download PDFInfo
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- CN204858987U CN204858987U CN201520523629.4U CN201520523629U CN204858987U CN 204858987 U CN204858987 U CN 204858987U CN 201520523629 U CN201520523629 U CN 201520523629U CN 204858987 U CN204858987 U CN 204858987U
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Abstract
The utility model discloses a there is not broad width of isolation alternating voltage modulating device based on frequency transformer coupling, including converter and power frequency isolation transformer, the input of converter is inserted respectively at input voltage's both ends, and the output of converter and power frequency isolation transformer's high -pressure side winding are connected, and power frequency isolation transformer's low tension side winding and voltage output end are connected, and input voltage US and the offset voltage UC that the converter produced carry out the vector stack, produce output voltage U0. The utility model discloses contactless, stepless, the sinusoidal wave power electronic voltage regulator of broad width, the stabiliser that have that frequency transformer keeps apart, be applicable to single, the three -phase system of different capacity grades, high performance -price ratio, etc.
Description
Technical field
The utility model discloses a kind of nothing isolation wide cut alternating voltage modulating device based on Industrial Frequency Transformer coupling, relate to AC voltage adjusting, AC voltage-stabilizing product technical field.
Background technology
Voltage regulator is mechanotronics the 14 batch of energy-conserving product.Be used in the places such as pressure regulation, temperature control, speed governing, light modulation, power control, the scope of application is very extensive.Pillar electric voltage regulator has output voltage waveforms undistorted (output voltage waveforms aberration rate increment <1%), and pillar electric voltage regulator adopts motor-operating mechanism, alleviates operation labour intensity.Export electricity can from the initial adjustment of no-voltage, momentary overload capacity is strong, no-load current, no-load loss are little, efficiency is high, noise is little, the life-span is long.The features such as suitable various perception, capacitive, ohmic load use.Be widely used in chemical industry, metallurgy, instrument and meter, machine-building, light industry industry, shared device, household electrical appliance etc.
Operation principle is similar to the asynchronous motor of stall with structure, and energy conversion relation is then similar to autotransformer.It is by means of the transmission mechanism such as handwheel or servomotor, makes to produce angular displacement between stators and rotators, thus changes phase place and the magnitude relation of stator winding and rotor windings induced electromotive force, to reach the object of regulation output voltage.Induction voltage regulator has three-phase type and single-phase type two kinds.
The structure rotor winding of three-phase induction regulator is connected into star, as primary winding; Stator winding is as auxiliary winding, and its one end is connected with rotor windings, and the other end is connected to load.Output voltage stators and rotators loop electromotive force sum (ignoring leakage impedance pressure drop).If change rotor-position, namely change angle α, secondary output voltage U2 just can be made to obtain level and smooth adjustment.Output voltage maximum and minimum value are respectively single-phase induction regulator structure and pressure regulation effect is similar to three-phase induction regulator, but its stators and rotators is single-phase winding.
Due to the fricton-tight contact of induction voltage regulator, therefore run very reliable.But it only rotates an angle in pressure regulation process, do not continue to rotate, therefore radiating condition is poor.The little person of capacity can adopt Air flow, the large person of capacity then need with oil cooling but.Weight, the exciting current and loss etc. of induction voltage regulator are all greater than autotransformer.
Existing AC voltage adjusting, method for stabilizing voltage mainly comprise following several:
(1) adopt servomotor to drive brush to move and realize transformer output voltage pressure regulation, output voltage realizes having level (transformer has multiple tap) or stepless (as autotransformer) to regulate.But due to the existence of motor and brush, be namely the voltage regulating mode having contact, its shortcoming be that pressure regulation speed is slow, the life-span is short, easily get stuck, volume is large, Heavy Weight etc.
(2) adopt controllable silicon to regulate transformer output voltage as electronic switch, realize contactless voltage regulating mode.But because pressure regulation has level, cannot continuous voltage regulating be realized, thus have the deficiency that output voltage precision is low; Because there being Industrial Frequency Transformer, still have that volume is large, the deficiency of Heavy Weight.
(3) AC sine wave pressure regulation is realized by the mode of AC/DC/AC conversion, the large electrochemical capacitor of direct current ring makes direct current loop voltag regulate slowly, and when only controlling output voltage by the index of modulation, have when output voltage is higher or lower the deficiency that waveform difference, precision are low, be difficult to realize wide cut pressure regulation.
(4), when realizing AC sine wave pressure regulation by the mode of AC/AC conversion, the deficiency that output voltage waveforms is poor, precision is low is had; Meanwhile, the system using single phase poaer supply is also difficult to.
Utility model content
Technical problem to be solved in the utility model is: for the defect of prior art, provides a kind of nothing isolation wide cut alternating voltage modulating device based on Industrial Frequency Transformer coupling.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of nothing isolation wide cut alternating voltage modulating device based on Industrial Frequency Transformer coupling, comprise converter and power frequency isolation transformer, the input of converter is accessed at the two ends of input voltage respectively, the output of converter is connected with the high-pressure side winding of power frequency isolation transformer, the low-pressure side winding of power frequency isolation transformer is connected with voltage output end, the bucking voltage UC that input voltage US and converter produce carries out vector superposed, produces output voltage U0.
As further preferred version of the present utility model, described converter is converters, and its particular circuit configurations comprises first, second resistance, the 3rd resistance, first to fourth electric capacity, first, second thyristor, first to fourth diode, inductance and transformer, wherein
One end of described first resistance is connected with one end of circuit input end, the first electric capacity, the source electrode of the first thyristor, the negative pole of the 3rd diode respectively; The other end of the other end respectively with the first electric capacity of the first resistance, one end of the second resistance, one end of the second electric capacity, the negative pole of the 4th diode, the second pin of transformer are connected; One end of the source electrode of drain electrode respectively with the second thyristor of the first thyristor, the positive pole of the 3rd diode, the 3rd electric capacity is connected, and the other end of the 3rd electric capacity is connected with the first pin of transformer; The positive pole of the other end of the other end respectively with the second electric capacity of the second resistance, the drain electrode of the second thyristor, the 4th diode is connected and ground connection; 3rd pin of transformer is connected through the negative pole of the first diode respectively with the second diode, one end of inductance, and one end of the other end the respectively with four electric capacity, one end of the 3rd resistance of inductance are connected; The other end of the 4th pin the respectively with four electric capacity of transformer, the other end of the 3rd resistance are connected and ground connection; 5th pin of transformer is connected with the positive pole of the second diode.
As further preferred version of the present utility model, the magnetic core of described transformer is single-phase excitatory.
As further preferred version of the present utility model, the thyristor in described converter is bidirectional thyristor KS5-4.
The utility model adopts above technical scheme compared with prior art, has following technique effect: contactless, stepless, the sinusoidal wave power electronics voltage regulator of wide cut, the pressurizer that have Industrial Frequency Transformer to isolate; Be applicable to single, the three-phase system of different capacitance grade; Cost performance is higher.
Accompanying drawing explanation
Fig. 1 is construction module schematic diagram of the present utility model, and wherein, T is power frequency isolation transformer.
Fig. 2 is the physical circuit schematic diagram of converter in the utility model;
Wherein: R1, R2 are respectively first, second resistance, R is the 3rd resistance, and C1 to C4 is respectively first to fourth electric capacity, and Q1, Q2 are respectively first, second thyristor, and VD1 to VD4 is respectively first to fourth diode, and L is inductance, and T1 is transformer.
Embodiment
Be described below in detail execution mode of the present utility model, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
Those skilled in the art of the present technique are understandable that, the correlation module related in the utility model and the function of realization thereof are the devices of hardware after improvement and formation thereof, device or system carry computer software programs conventional in prior art or pertinent protocols just can realize, and are not improve computer software programs of the prior art or pertinent protocols.Such as, the computer hardware system after improvement still can realize the specific function of this hardware system by loading existing operation system of software.Therefore, be understandable that, innovation of the present utility model is the improvement of hardware module in prior art and connects syntagmatic, but not be only in hardware module for realizing the improvement of software or the agreement of carrying about function.
Those skilled in the art of the present technique are understandable that, the correlation module mentioned in the utility model is the one or more hardware device for performing in step in operation, method, flow process described in the application, measure, scheme.Described hardware device for required object and specialized designs and manufacture, or also can adopt the known device in all-purpose computer or other known hardware devices.Described all-purpose computer activates or reconstructs with having storage procedure Selection within it.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification of the present utility model " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the utility model.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
Construction module schematic diagram of the present utility model as shown in Figure 1, a kind of nothing isolation wide cut alternating voltage modulating device based on Industrial Frequency Transformer coupling, comprise converter and power frequency isolation transformer, the input of converter is accessed at the two ends of input voltage respectively, the output of converter is connected with the high-pressure side winding of power frequency isolation transformer, the low-pressure side winding of power frequency isolation transformer is connected with voltage output end, the bucking voltage UC that input voltage US and converter produce carries out vector superposed, produces output voltage U0.
As further preferred version of the present utility model, the magnetic core of described transformer is single-phase excitatory.
As further preferred version of the present utility model, the thyristor in described converter is bidirectional thyristor KS5-4.
In the utility model, the physical circuit schematic diagram of converter as shown in Figure 2, described converter is converters, its particular circuit configurations comprises first, second resistance, 3rd resistance, first to fourth electric capacity, first, second thyristor, first to fourth diode, inductance and transformer, wherein
One end of described first resistance is connected with one end of circuit input end, the first electric capacity, the source electrode of the first thyristor, the negative pole of the 3rd diode respectively; The other end of the other end respectively with the first electric capacity of the first resistance, one end of the second resistance, one end of the second electric capacity, the negative pole of the 4th diode, the second pin of transformer are connected; One end of the source electrode of drain electrode respectively with the second thyristor of the first thyristor, the positive pole of the 3rd diode, the 3rd electric capacity is connected, and the other end of the 3rd electric capacity is connected with the first pin of transformer; The positive pole of the other end of the other end respectively with the second electric capacity of the second resistance, the drain electrode of the second thyristor, the 4th diode is connected and ground connection; 3rd pin of transformer is connected through the negative pole of the first diode respectively with the second diode, one end of inductance, and one end of the other end the respectively with four electric capacity, one end of the 3rd resistance of inductance are connected; The other end of the 4th pin the respectively with four electric capacity of transformer, the other end of the 3rd resistance are connected and ground connection; 5th pin of transformer is connected with the positive pole of the second diode.
By reference to the accompanying drawings execution mode of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to technical spirit of the present utility model, within spirit of the present utility model and principle, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solutions of the utility model.
Claims (4)
1. the nothing isolation wide cut alternating voltage modulating device based on Industrial Frequency Transformer coupling, it is characterized in that: comprise converter and power frequency isolation transformer, the input of converter is accessed at the two ends of input voltage respectively, the output of converter is connected with the high-pressure side winding of power frequency isolation transformer, the low-pressure side winding of power frequency isolation transformer is connected with voltage output end, the bucking voltage UC that input voltage US and converter produce carries out vector superposed, produces output voltage U0.
2. a kind of nothing based on Industrial Frequency Transformer coupling isolates wide cut alternating voltage modulating device as claimed in claim 1, it is characterized in that: described converter is converters, its particular circuit configurations comprises first, second resistance, 3rd resistance, first to fourth electric capacity, first, second thyristor, first to fourth diode, inductance and transformer, wherein
One end of described first resistance is connected with one end of circuit input end, the first electric capacity, the source electrode of the first thyristor, the negative pole of the 3rd diode respectively; The other end of the other end respectively with the first electric capacity of the first resistance, one end of the second resistance, one end of the second electric capacity, the negative pole of the 4th diode, the second pin of transformer are connected; One end of the source electrode of drain electrode respectively with the second thyristor of the first thyristor, the positive pole of the 3rd diode, the 3rd electric capacity is connected, and the other end of the 3rd electric capacity is connected with the first pin of transformer; The positive pole of the other end of the other end respectively with the second electric capacity of the second resistance, the drain electrode of the second thyristor, the 4th diode is connected and ground connection; 3rd pin of transformer is connected through the negative pole of the first diode respectively with the second diode, one end of inductance, and one end of the other end the respectively with four electric capacity, one end of the 3rd resistance of inductance are connected; The other end of the 4th pin the respectively with four electric capacity of transformer, the other end of the 3rd resistance are connected and ground connection; 5th pin of transformer is connected with the positive pole of the second diode.
3. a kind of nothing based on Industrial Frequency Transformer coupling isolates wide cut alternating voltage modulating device as claimed in claim 1 or 2, it is characterized in that: the magnetic core of described transformer is single-phase excitatory.
4. a kind of nothing based on Industrial Frequency Transformer coupling isolates wide cut alternating voltage modulating device as claimed in claim 1 or 2, it is characterized in that: the thyristor in described converter is bidirectional thyristor KS5-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520523629.4U CN204858987U (en) | 2015-07-20 | 2015-07-20 | There is not broad width of isolation alternating voltage modulating device based on frequency transformer coupling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520523629.4U CN204858987U (en) | 2015-07-20 | 2015-07-20 | There is not broad width of isolation alternating voltage modulating device based on frequency transformer coupling |
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| CN204858987U true CN204858987U (en) | 2015-12-09 |
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| CN201520523629.4U Active CN204858987U (en) | 2015-07-20 | 2015-07-20 | There is not broad width of isolation alternating voltage modulating device based on frequency transformer coupling |
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