CN102480254A - Isolated self-excitation magnetic saturation reactor-type soft start device - Google Patents
Isolated self-excitation magnetic saturation reactor-type soft start device Download PDFInfo
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- CN102480254A CN102480254A CN201010558065XA CN201010558065A CN102480254A CN 102480254 A CN102480254 A CN 102480254A CN 201010558065X A CN201010558065X A CN 201010558065XA CN 201010558065 A CN201010558065 A CN 201010558065A CN 102480254 A CN102480254 A CN 102480254A
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Abstract
The invention relates to an isolated self-excitation magnetic saturation reactor-type soft start device, which is characterized in that the major functional component of the device is an isolated controllable self-excitation saturation adjustable reactor. The functional component is consisted of iron cores, a primary winding, a control winding and a set of rectifier thyristors. Each of the left and right iron cores of the reactor is provided with a control winding, and the left and right iron cores are connected with the two thyristors, respectively, in series in the opposite directions. The saturation degrees of the iron cores of the reactor can be controlled by changing the direct-current magnetic flux generated by the control winding so as to change the electrical resistivity, wherein the size of the direct-current magnetic flux is controlled by the conduction angles of the thyristors. The reactor is used for soft start of a motor, so as to obtain a novel soft start device. The soft start device of the invention can also be used in dynamic reactive power compensation, filtration and voltage regulation in a high-voltage circuit. The soft start device of the invention has the following benefits: the direct-current magnetic flux is obtained by electromagnetic induction and rectification without additional external direct current supply, and the thyristors are connected with the control winding and electrically isolated from high voltage completely, so that the control circuit is simple, safe and reliable.
Description
Technical field
The invention belongs to electric drive technology field, be specifically related to a kind of novel isolation self-excitation saturable soft starter device.
Background technology
Magnetic saturation REgulatable reactor kind roughly has two types at present, and the one, provide excitatory through adopting the external controllable DC power supply, the 2nd, provide excitatory through the coil sections in the winding through controlled rectification.Mode one needs external power source, and cost is high relatively, and is inconvenient during use; Rectifier cell in the mode two directly links to each other with a winding, need solve the problem of the safety isolation of control circuit and high-tension circuit when using for high-tension apparatus, and control circuit is complicated.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, function admirable, reliability is high and novel isolation self-excitation saturable soft starter device easy to maintenance.
Technical solution of the present invention is: a kind of novel isolation self-excitation saturable soft starter device; Its main function components is to isolate controlled self-excitation magnetic saturation REgulatable reactor, isolates controlled self-excitation magnetic saturation REgulatable reactor and is made up of iron core, winding, control winding and one group of rectification thyristor.
The iron core of the controlled self-excitation magnetic saturation of the isolation described in the technical solution of the present invention REgulatable reactor is made up of three-limb core and last lower yoke.
A winding of the controlled self-excitation magnetic saturation of the isolation described in the technical solution of the present invention REgulatable reactor is on middle iron core.
The control winding of the controlled self-excitation magnetic saturation of the isolation described in the technical solution of the present invention REgulatable reactor has two groups, respectively around about on two iron cores, two umber of turns with around to consistent.
The rectification thyristor of the controlled self-excitation magnetic saturation of the isolation described in the technical solution of the present invention REgulatable reactor is two; The anode of thyristor element and negative electrode are received the two ends of two control windings respectively; Insert opposite polarity directions, the angle of flow of thyristor is implemented by circuit control.
The invention has the beneficial effects as follows: control winding and the intact electrical isolation of winding, have only magnetic related.Obtain direct current flux through electromagnetic induction and rectification, do not need to add in addition external dc power.Thyristor links to each other with the control winding, and with the complete electric separating of a sub-high pressure, control circuit is simple, safe and reliable.
Description of drawings:
Fig. 1 is a kind of structure of the present invention and uses sketch map;
Fig. 2 is an another kind of structural representation of the present invention;
Fig. 3 is the single-phase application primary circuit of a present invention schematic diagram;
Fig. 4 is a three-phase applications primary circuit schematic diagram of the present invention;
Among the figure: 1, left iron core; 2, winding; 3, upper magnet yoke; 4, middle iron core; 5, right iron core; 6, left side control winding; 7, right control winding; 8, left-handed crystal brake tube; 9, right-handed crystal brake tube; 10, lower yoke; 11, power supply; 12, motor.
Embodiment:
Below in conjunction with accompanying drawing the present invention is described further.
Shown in accompanying drawing 1: a winding (2) is connected alternating current, and exchange flux forms two loops in middle iron core (4), last lower yoke (3), (10) and left and right sides iron core (1), (5).When the positive half cycle of power supply (11), negative just down on the induced voltage of left side control winding (6), the controlled conducting of left-handed crystal brake tube (8) then produces magnetic flux by left side control winding (6) in left iron core (1), and its direction is shown in arrow line in scheming.When power supply (11) negative half period, just to go up under the right control winding (7) and bearing, the controlled conducting of right-handed crystal brake tube (9) then produces magnetic flux by right side control winding (7) in right iron core (5), and direction is shown in arrow line among the figure.By about control the magnetic flux that winding (6), (7) produce iron core (1), (5) and last lower yoke (3), (10) form closed direct current flux loop in the left and right sides.Through control circuit control left and right sides thyristor (8), (9) conducting angle, just can control the size of direct current flux.Direct current flux changes the saturation changed left and right sides iron core (1), (5) and left and right sides yoke (3), (10); Because of left and right sides iron core (1), (5) and last lower yoke (3), (10) also are the exchange flux loops of a winding (2); So, also just change the reactance value of a winding (2).Direct current flux is littler, and a winding (2) reactance value is bigger, and vice versa.
A winding (2) serial connection of this reactor is gone between power supply (11) and the motor (12).The terminal voltage of motor (12) just receives the control around (2) reactance value of winding, and reactance value is big more, and the terminal voltage of motor (12) is low more; Otherwise reactance value is more little, and the terminal voltage of motor (12) is high more.So, just controlled the terminal voltage of motor (12) through control left and right sides thyristor (8), (9) conducting angle.When starting, the terminal voltage of motor (12) is changed from small to large, just reached the purpose of soft start.
Change motor (12) into other functional circuit, this REgulatable reactor also can be brought into play regulating action, is used for electric power dynamic passive compensation, filtering, voltage stabilizing aspect.
Above reactor also can be divided into a winding two parts of same structure, and on the iron core of both sides, the distribution of its AC and DC magnetic flux is identical with Fig. 1 respectively for the mode of pressing Fig. 2, and operation principle is constant.
The single-phase soft starter device practical application of the present invention primary circuit principle such as Fig. 3.Adopt more than three single-phase REgulatable reactor can form three-phase REgulatable reactor soft starter device, the three-phase soft starter device is used primary circuit principle such as Fig. 4.
The above; It only is preferred embodiment of the present invention; Be not that any pro forma restriction is done in invention, every foundation technical spirit of the present invention all still belongs in the scope of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. isolate self-excitation saturable soft starter device for one kind; It is characterized in that: the main function components of device is to isolate controlled self-excitation magnetic saturation REgulatable reactor; Isolating about controlled self-excitation magnetic saturation REgulatable reactor respectively has a control winding on two iron cores, and each control winding respectively is connected in series a thyristor, but in the opposite direction; Through thyristor control rectification; The direct current flux of its generation forms the closed-loop path in two iron core column, control winding and a winding electrical isolation have only the magnetic circuit coupling.
2. the three isolated controlled self-excitation saturable reactors that the controlled autoexcitation magnetic saturation reactor of isolation according to claim 1 is formed.
3. according to claim 2 three isolated controlled autoexcitation magnetic saturation reactors are applied to flexible starter for electric motor, constitute a kind of isolation self-excitation saturable soft starter device.
4. the application of the controlled autoexcitation magnetic saturation reactor of isolation according to claim 1 in dynamic passive compensation, filtering, voltage stabilizing function property circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010558065XA CN102480254A (en) | 2010-11-22 | 2010-11-22 | Isolated self-excitation magnetic saturation reactor-type soft start device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010558065XA CN102480254A (en) | 2010-11-22 | 2010-11-22 | Isolated self-excitation magnetic saturation reactor-type soft start device |
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| CN102480254A true CN102480254A (en) | 2012-05-30 |
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| CN201010558065XA Pending CN102480254A (en) | 2010-11-22 | 2010-11-22 | Isolated self-excitation magnetic saturation reactor-type soft start device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590729A (en) * | 2015-12-28 | 2016-05-18 | 国网山东省电力公司枣庄供电公司 | Transformer with excitation reactance adjustable function |
| CN105897096A (en) * | 2016-06-14 | 2016-08-24 | 上海电机学院 | Automatic adjustment reactor for high-voltage motor starting and adjustment method of automatic adjustment reactor |
| CN112865127A (en) * | 2021-03-22 | 2021-05-28 | 赵忠臣 | Dynamic reactive power compensation device |
| CN112992510A (en) * | 2021-03-22 | 2021-06-18 | 赵忠臣 | Self-excitation type three-phase three-column type electrically-controlled reactor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964177A (en) * | 2005-11-07 | 2007-05-16 | 孝感市大禹电气有限公司 | Electromagnetic voltage regulation device for soft start-up of high voltage AC motor |
| CN101030744A (en) * | 2007-03-19 | 2007-09-05 | 王心刚 | Starter of oil-submersible electric pump |
| CN101345122A (en) * | 2008-05-19 | 2009-01-14 | 哈尔滨工业大学 | Direct current flux control type adjustable reactor |
| US20090108795A1 (en) * | 2007-10-31 | 2009-04-30 | Hilton Raymond Bacon | Apparatus and method for starting and stopping an ac induction motor |
-
2010
- 2010-11-22 CN CN201010558065XA patent/CN102480254A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964177A (en) * | 2005-11-07 | 2007-05-16 | 孝感市大禹电气有限公司 | Electromagnetic voltage regulation device for soft start-up of high voltage AC motor |
| CN101030744A (en) * | 2007-03-19 | 2007-09-05 | 王心刚 | Starter of oil-submersible electric pump |
| US20090108795A1 (en) * | 2007-10-31 | 2009-04-30 | Hilton Raymond Bacon | Apparatus and method for starting and stopping an ac induction motor |
| CN101345122A (en) * | 2008-05-19 | 2009-01-14 | 哈尔滨工业大学 | Direct current flux control type adjustable reactor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590729A (en) * | 2015-12-28 | 2016-05-18 | 国网山东省电力公司枣庄供电公司 | Transformer with excitation reactance adjustable function |
| CN105897096A (en) * | 2016-06-14 | 2016-08-24 | 上海电机学院 | Automatic adjustment reactor for high-voltage motor starting and adjustment method of automatic adjustment reactor |
| CN112865127A (en) * | 2021-03-22 | 2021-05-28 | 赵忠臣 | Dynamic reactive power compensation device |
| CN112992510A (en) * | 2021-03-22 | 2021-06-18 | 赵忠臣 | Self-excitation type three-phase three-column type electrically-controlled reactor |
| CN112992510B (en) * | 2021-03-22 | 2023-08-29 | 赵忠臣 | Self-excitation type three-phase three-column type electric-regulation magnetic-control reactor |
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Application publication date: 20120530 |