TW201143934A - A control method of coils of an electromagnetic stir device - Google Patents

Abstract

A control method of coils of an electromagnetic stir device comprises sorting a number of coils of a coil group of an electromagnetic stir device into a first coil group, a second coil group, a third coil group, a fourth coil group, a fifth coil group, and a sixth coil group by order in an axial direction, and importing current into the first to the sixth coil groups, wherein each coil group has a plurality of coils.

Description

201143934 VI. Description of the Invention: [Technical Field] The present invention relates to a line method of an electromagnetic device, and more particularly to a coil module control method for adjusting an input current to improve electromagnetic force of a magnetic thrust. [Prior Art]

At present, it is applied to the f magnetic stirring device of the steel manufacturing towel. The linear induction motor in the system is a substance that is turned into a middle, and can be a high magnetic (four) or low magnetic material, but it must be relied on anyway. The Lorentz force generated by the stator pole of the motor is driven to generate the interaction force to achieve the function of the second measurement operation. _ Referring to Fig. 1 which discloses a conventional electromagnetic field dropping device, the electromagnetic stirring device 8 includes a tank 81 and a two-coil assembly. The tank body 81 has a chamber 811 for accommodating a conductive liquid, and the two coil assemblies 82 are respectively disposed on opposite sides of the tank body. Each of the coil assemblies 82 includes a first coil 82a, a second coil 82b, a third coil 82c, a fourth coil 82d, a fifth coil 82e, a sixth coil 82f, and a seventh coil 82g. An eighth coil 82h, a ninth coil 82i, a tenth coil 82j, a first coil 82k and a twelfth coil 821 are sequentially arranged 'and the coil assembly 82 is electrically connected to a two-phase current source. Referring again to FIG. 2a, wherein the three-phase current source generates three first phase currents, a second phase current b, and a third phase current c, each having a phase difference of 120 degrees, to provide the first and second phases. Third phase currents a, b, c and a fourth phase current -a, a fifth phase current _b and a sixth 201143934 phase electricity / melon C, wherein the fourth phase current · & and the first phase current a has a (10) degree phase difference, the second phase current -W has a phase difference of '180 degrees' and the sixth phase current -c and the third phase current c have a phase difference of 18 degrees. Further, the first coil 82a to the twelfth coil rib sequentially pass the respective phase currents (a, _c, b, _a, c, _b, a, _c b, _a, c, -b). Thus, the magnetic field generated by the excitation of the two-wire member 82 interacts with the conductive liquid in the cavity 81 to cause a force between the coil assembly u and the conductive liquid in the cavity 81. Conduct relative operations. The inside of the tank 81 used in the electromagnetic lion device 8 is a low-magnetic material. In the case of magnetic permeability, the skin is greatly reduced, and the stomach enters a considerable amount of excitation on the __8. This produces a sufficiently large operating surface and labor contact force =: the substance in the trough body 81, but in this case, the wire assembly: the ring assembly 8 is also highly likely to cause magnetic interference and effect. The efficiency of 乍. For the above reasons, the S group of the present invention can effectively improve the above-mentioned missing electromagnetic lion device line [invention content] The purpose of the mixing plant 2 is to improve the above-mentioned shortcomings' provides electromagnetic interference: group control method To provide the existing industry to apply without changing the existing structure, through the coil current. The invention of the present invention aims to achieve the k-liter electromagnetic stirring device. The coil 201143834 nuclear group control method of the electromagnetic disturbance device of the present invention mainly divides the coils according to the (four) order. - The third coil group, the fourth coil group, the first coil group, the - group, and the current input to the sixth to sixth sixth coils each have an oil axis. ', I, the coil set [Embodiment] The features and advantages can be more apparent, and in conjunction with the drawings, for the above and other purposes of the present invention,

It is to be understood that the preferred embodiments of the present invention are described in detail below as follows: Illustrated in Japanese, <RTIgt;</RTI> Mainly along the axial direction X of the core, the number of lines of the electromagnetic mixing device is divided into a first coil group 11, a second coil group 12, a third coil group 13, a fourth coil group 14, a fifth coil group 15, and a sixth coil group 16, and input currents to the first to sixth coil groups u to 16, respectively, wherein each of the coil groups 11 to 16 has a number Coils. Referring to Figure 2b, it is a schematic diagram of a coil module control method of a preferred embodiment of the present invention using a current supplied from a three-phase current source. The three-phase current provided by the three-phase current source is one of a first phase current a, a second phase current B and a third phase current C' which are mutually different from each other by 120 degrees, and the three-phase current is respectively introduced into the first phase And three of the six coil groups ii~l6; and the first, second, and third phase currents A' B, C of the three-phase current source obtain a first reverse phase current -A, a second The reverse phase current -B and a third reverse phase current _c, and the three reverse phase currents are respectively introduced into the remaining three of the first to sixth coil groups 11 to 16 by 201143934. Wherein, the first reverse phase current -A and the first phase current A have a phase difference of 180 degrees, and the second reverse phase current -B and the second phase current B have a phase difference of 180 degrees, and the third The reverse phase current -C has a phase difference of 180 degrees from the third phase current C. In a preferred embodiment of the present invention, the first phase current A can be introduced into the first coil group 11; the third reverse phase current -C is introduced into the second coil group 12; B is introduced into the third coil group 13; the first reverse phase current -A is introduced into the fourth coil group 14; the third phase current c is introduced into the fifth coil group 15; the second reverse phase current -B is introduced The sixth coil set 16. The number of coils in each of the coil groups 11 to 16 is selected to be two. More specifically, the six coil sets are respectively supplied with power by a three-phase current source. Since the time-varying magnetizing current causes a time-varying magnetic field in the exciting coil, a sufficient Lorentz force is generated through the coil module 1 to drive the electromagnetic stirring device. 8 The substance in the tank 81 applied. In addition, regarding the manner of generating the first reverse phase current-A, the second reverse phase current-B, and the third reverse phase current-C, the first, second, and The three-phase currents A, B, and C are inverted to obtain the first, second, and third reverse phase currents -A, ·, and -C. Alternatively, the first phase current can be directly introduced into the fourth coil group 14 in a manner opposite to the current flow direction of the first coil group 11 to generate the first reverse phase current -A; similarly, The second and third phase currents B and C may be respectively introduced into the sixth and second coil groups 16 in a manner opposite to the current flow directions of the third and fifth coil groups 13 and 15, respectively. 12 to generate the second and third reverse phase currents -B, -C, respectively. Continuing, please refer to Figures 4a and 4b. Figure 4a represents a magnetic flux density diagram of a conventional coil assembly current, and Figure 4b is a magnetic flux density diagram of a coil mold of the preferred embodiment. Compared to Figure 4a

= Distribution 'Because of the invention C, the method of electric catching and introducing, therefore, the coil module as shown in Fig. 4b! The resulting magnetic flux density distribution has a density of more than the month = Lenze force, and the magnetic lines of force are more concentrated; and then refer to the 5th, 5b, and 5th, the 5a figure represents the labor force diagram of the conventional coil. The Lorentz method of the coil module control method of the preferred embodiment = the method of improving the current introduction of the current ring mode by 5, so that it can be seen that the Lorentz force generated by the 5th figure is higher than that of the 5th figure, and the magnetic line is more Intensive. The money of the door and the regularity of the door, compared with the coil mode of the conventional electromagnetic stirring device, the material in the tank 81 applied by the electromagnetic stirring device 8 through the relatively large exciting current on the 82, but Under this premise, 'it is also very likely to cause miscellaneous effects and reduce the efficiency of electromagnetic lining = operation efficiency'. The present invention provides a financial effect and almost no need to change the control method of the structure of the lightning magnetic disturbance device, by improving the The line of electromagnetic mixing device, module 1 current polarity introduction method, the result significantly enhanced its electromagnetic cost and Lauren 35 force' and effectively improved the efficiency of electromagnetic lining device operation. The present invention provides a magnetic stirring device for the electromagnetic stirring device to provide an electromagnetic stirring device applied in the prior art, and the polarity of the coil current is improved without changing the existing structure, thereby achieving the rise. The efficiency of the electromagnetic stirring device operating efficiency. While the invention has been described in connection with the preferred embodiments described above, it is not intended to be construed as a part of the invention. The technical scope of the invention is protected by the invention, and therefore, the scope of the invention is defined by the scope of the appended claims. 201143934 [Simplified description of the drawing] Fig. 1 is an electromagnetic stirring device. Figure 2a: Figure 1 of a conventional electromagnetic mixing device. __Guide the current diagram Figure: The line of her good day off the line _ group (four) method

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 3 is a schematic view of a preferred embodiment of the present invention. A coil module of a magnetic stirring device. Fig. 4a is a diagram showing a magnetic flux density of a current introduced by a conventional coil assembly. Figure 4b is a diagram showing the magnetic flux density of the coil module control method of the preferred embodiment of the present invention. Figure 5a: Laurentz force diagram of the current introduced by the conventional coil assembly. Fig. 5b is a diagram showing the Laurz force diagram of the coil module control method of the preferred embodiment of the present invention.

[Main component symbol description] [Invention] 1 coil module 11 first coil group 12 second coil group 13 third coil group 14 fourth coil group 15 fifth coil group 16 sixth coil group A first phase current - A first reverse phase current B second phase current -B second reverse phase current 201143934 c third phase current -C third reverse phase current [conventional] 8 electromagnetic stirring device 81 tank 811 chamber 82 coil Assembly 82a first coil 82b second coil 82c third coil 82d fourth coil 82e fifth coil 82f sixth coil 82g seventh coil 82h eighth coil 82i ninth coil 82j tenth coil 82k eleventh coil 821 twelfth Coil a first phase current -3. fourth phase current b second phase current -b fifth current c third phase current -c sixth phase current X axial direction of the core

Claims (1)

201143934 VII. Applying for a patent garden: 2 - kind = Na set coil module control method, which comprises: A: a plurality of coils of the coil module of the stirring device according to the iron core axis: the 绐 garden magic sequence is not a first coil group, - the second coil group - a fourth _ group, a fifth coil group and a - sixth coil, = and each of the coil groups has a plurality of coils; and - three currents are separately introduced into the material - to three of the sixth group Further, a reverse three-phase current is respectively introduced to the remaining three of the first to sixth coil groups; wherein 'the reverse three-phase current has no opposite phase to the three-phase current. The method for controlling a coil module of an electromagnetic disturbance device according to the first aspect of the invention, wherein the three-phase current comprises a first phase current, a second phase current, and a third phase current, and the first A phase current is introduced into the first coil group, the second phase current is introduced into the third coil group, and the third phase current is introduced into the fifth coil group. 3. The coil module control method of the electromagnetic stirring device according to claim 1, wherein the reverse three-phase current comprises a first reverse phase current, a second reverse phase current, and a third reverse The phase current is directed to the fourth coil group, the second reverse phase current is introduced into the sixth coil group, and the third reverse phase current is introduced into the second coil group. 4. The coil module control method of the electromagnetic stirring device according to claim 3, wherein the phase difference between the first, second and third phase currents is 120 degrees, the first and second And the third reverse phase current has an opposite phase to the first, second, and third phase currents, respectively. —11 — 201143934 5 According to the method of controlling the coil module of the electromagnetic stress f according to the application of the third item, the first reverse phase current, the second reverse phase current and the third reverse phase current are generated. The first, second, and third reverse phase currents are obtained by inverting the first, second, and third phase currents by using an inverting device. 6. The method of controlling a coil module of an electromagnetic stirring device according to claim 3, wherein the method of generating the first reverse phase current 'the second reverse phase current and the third reverse phase current is respectively The first, second, and third phase currents are sequentially introduced into the fourth, sixth, and second coil groups in a manner opposite to the current flow directions of the first, third, and fifth coil groups, respectively The first, second, and third reverse phase currents are generated. —12 —