TW201013713A - Method and method of the winding arrangement of UU type core and transformer - Google Patents

Abstract

A winding arrangement method for UU type core comprising following steps:(a) providing a UU type core with a first arm part and a second arm part on opposite side of the first arm part;(b) providing a first winding around the first arm part and a second winding around the second arm part; and (c) generating a first magnetic field from the first winding, and generating a second magnetic field from the second winding wherein magnetic flux of the second magnetic field is the same as that of the first magnetic field but magnetic property of the second magnetic field is different with that of the first magnetic field so that the first magnetic field is offset by the second magnetic field. The characteristics of the winding apparatus of UU type core is small, light weight, low cost, high efficiency of conversion, and no interference source. It is very suitable for application of power transformer and achieves requirement of light weight, thin, high efficiency, energy saving and environmental protection.

Description

201013713 IX. Description of the invention: [Technical field of the invention] The present invention relates to a method, a device and a transformer for configuring a core winding, in particular, a method for avoiding interference with the outside and being less prone to noise, and being applied to a resonant type. Transformer, backlight power converter (Inverter) transformer, power factor correction turbulence (PFC choke) device, or other winding configuration method, device and transformer of UU type core that requires smaller volume and more efficient design. ❹ 【Prior Art】 All electrical products must be supplied with electrical energy through a power supply. The high efficiency, energy saving, environmental protection, light and short requirements are the design goals, and the most important in the power supply. The components are transformers, and the transformers are distinguished by the appearance of the core. Common types include EE type, ER type, EC type 'PQ type, UU type and the like. Referring to Figure 1 and Figure 2, the ϋϋ-type iron core transformers are divided into two categories, one is the primary winding 81 and the secondary winding 82 is on the same side of the single-sided winding (such as 10 @ U ' and the other is the primary winding 931 and the secondary The winding 932 is on the opposite side of the bilateral winding (Fig. 2). The UU type core transformer has the advantages of simple structure, small size, light weight, and low +, but the UU type core transformer is rarely used in the transformer. UU-type iron core transformers can easily interfere with surrounding circuits or components. The larger the transformer interference is, the more powerful it can't function properly; regardless of the single or double-winding's primary field is the group-magnetic field (ν pole +S pole), the magnetic field cutting guide will generate voltage and current interference to other circuits 201013713. The principle is as follows: Refer to Figure 2, 9 cases of ϋϋ-type iron core transformer with bilateral windings, including an opening containing a set of u-shaped cores The core 91 is wound around the primary winding 93丨 of a first arm 9丨i of the UU core 91 and the secondary winding 932 of a second arm 912 wound around the uu core 91. The primary burn group 931 is connected. -Electricity After the source 90, the coil of the primary winding 931 generates a primary current Ip. At this time, the first phase of the core 91 generates an induced magnetic field (n pole at the top and S pole at the bottom), if the magnetic flux of the primary winding 931 Is 0, and its relationship is based on the following formula: V = LJt^ = N^ = idt Equation 1 Equation 2 Derived = 彔 mother whose symbolic meaning is 0: the magnetic flux of the primary winding; 0: the inductance of the primary winding; Punching: number of turns of the primary winding; pregnancy: current flowing through the primary winding. It can be seen from Equation 2 that the magnetic flux 0 of the primary winding 931 is proportional to the input current 。. The output voltage of the secondary winding 932 is ~

Vo = Ns dt Formula The symbolic meanings are Fb: the output voltage of the secondary winding; 抡: the number of secondary secondary windings; what is the magnetic flux of the secondary winding. In addition to the output voltage % induced by the secondary winding 932, assuming that an external conductor 7 straddles the transformer 9, the external conductor 7 will be affected by the magnetic flux $ of the primary winding 931 and will also induce an induced voltage vx. For the formula, refer to the following formula: 201013713 Equation 4 νχ,Ν^,Ν = ι;νχ = Ά. Due to the influence of the magnetic flux 0 of the primary winding 931, the magnetic flux induced by the external wire 7 is proportional to the magnetic flux of the primary winding 931. The magnetic flux ^ of the primary winding 931 is also proportional to the input current ( (Equation 2). It is known that the larger the input current is, the larger the induced voltage & the external conductor 94 will be. Therefore, the U-shaped core transformer The winding technology is easy to generate electromagnetic interference (EMI) for the external conductor 7 or the circuit. The greater the input current ripple, the stronger the interference, and the closer the distance from the transformer, the more serious the interference will be. The core is used in high current transformers. SUMMARY OF THE INVENTION The object of the present invention is to overcome the problem that electromagnetic interference is easily generated by the prior art winding technology, and to provide a UU-type core winding arrangement method, device and transformer capable of generating a magnetic field that cancels the electromagnetic interference. Therefore, the UU-type core winding arrangement method of the present invention comprises the following steps: (a) providing a UU-type iron core having a first arm portion and a second side different from the first arm portion An arm; (b) providing a first winding wound around the second portion and a second winding wound around the second arm, and (c) the first winding generates a first magnetic field, the first The second winding produces a second magnetic field having the same magnetic flux but opposite magnetic properties, and the first magnetic field is offset by the second magnetic field. The UU-type core winding device of the present invention comprises a UTJ-type iron core having a first arm portion and a second arm portion on a side different from the first arm portion, and a winding power supply of the 201013713 power source to generate a first magnetic field. the first

The first arm portion receives a winding, and a winding is disposed on the transformer. The transformer of the present invention includes a

In the arm portion, the first side of the first and second sides are a first arm portion, and the other side of the second side of the second first arm portion is connected to each other by a connecting portion. The bobbin has two through holes parallel and spaced apart from each other, each of the u-shaped iron

The first arm is correspondingly connected in a closed loop. The first winding winds a coil around a surface of the bobbin adjacent to the first arm of each U-shaped core and receives a power supply to generate a first magnetic field; the second winding winds the coil around Adjacent to the bobbin surface of the second arm of each U-shaped core, and generating a second magnetic field having the same magnetic flux but opposite magnetic properties to offset the first magnetic field. The U.S. core winding configuration method, device and transformer have the following effects: 1. When two windings of the UU core are arranged, two equal but opposite polarity magnetic fields are established to simultaneously cut the two magnetic fields with opposite polarities simultaneously - The two sets of voltages generated by the guide ship cancel each other out due to the opposite polarity, thereby eliminating electromagnetic interference. 2. UU-type iron core transformer has a larger wke winding window area, so it can carry a larger power output. - 3. The complementary effect of the dual primary magnetic field can improve the conversion efficiency of the transformer itself. Using the advantages of the uu-type core type high conversion rate, it can be applied to the resonant power transformer, the backlight power transformer, and the power factor correction choke device. Still the efficiency of the transformer, reducing its weight and volume. The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention. Before the present invention is described in detail, it is noted that in the following description, like elements are denoted by the same reference numerals. Referring to FIG. 3 and FIG. 4', the winding configuration method of the UU core of the present invention is described in detail as follows: Step 301: providing a υΐ-type iron core having a first arm portion and a second side different from the first arm portion Arm. The UU core 1 includes two sets of cores 11 and i 2 , and the U cores 11 and 12 respectively have two arm portions 1U, 112 and 121, 122 which can respectively penetrate through holes 310 and 32 around the wire frame 3 and Form a closed magnetic circuit. Step 302: providing - a first primary winding 21 wound around the first arm portion 1U and a second primary winding 22 wound around the second arm portion 112. The bobbin 3 is for the first arm portion 丨丨丨The second arm portion 12 is circumferentially wound around the coil windings of the first primary winding 21 and the second primary winding 22, and has a partition to partition the primary winding and the secondary winding (described later), and The number of turns and the wire diameter of the first primary winding 21 and the second primary winding 22 are the same. Step 3G3: providing - a first secondary winding 201013713 23 wound around the first arm portion lu and a second secondary winding 24 wound around the second arm portion 112. Similar to FIG. 1, the first primary winding 21 and the first secondary winding 23 can be regarded as one-sided windings on one side, and the second primary winding 22 and the second secondary winding 24 can be regarded as single-sided windings on the other side. . Step 304: A first magnetic field is generated by the first primary winding 21, and the second primary winding 22 generates a second magnetic field having the same magnetic flux but opposite magnetic properties, and cancels the first magnetic field by the second magnetic field. The principle of the winding arrangement method of the UU type core of the present invention is that the characteristics of the number of turns and the wire diameter of the first primary winding 21 and the second primary winding 22 are completely equal, and the winding configuration method can be used to establish the same pair of characteristics. , but the double primary magnetic field with opposite polarity is distributed on the left and right sides of the transformer core; thereby, the internal magnetic circuit forms an equal complementation function, in addition to improving the conversion efficiency of the transformer, and generating two equal and opposite polarities. The induced voltages, whose sum is zero, offset each other, presenting the characteristics of the neutral body' to avoid interference with external conductors or circuits. The following describes two embodiments of the winding device of the ϋϋ-type core realized by the winding arrangement method of the UU-type core of the present invention: First Instance: Spring and Shanghai, referring to FIG. 4, a preferred embodiment of the transformer of the present invention The utility model comprises a UU-shaped iron 〜1, a first winding 2〇1, a second winding 2, a winding frame 3 and a casing 6. The outer casing 6 has a partition plate 61 and two receiving grooves 610 and 620 separated by a partition plate 61. The bobbin 3 includes two frames 31 and 32, and each of the frames 31 and 32 has two parallel and spaced apart sides. Through holes 31〇, 32〇. 10 201013713 UU type iron core! The second MU type cores u and i2 are included. For convenience of explanation, the arm portions ιιι ΐ2 of the same side of each of the u-shaped cores u and u are collectively referred to as the -arm portion 13 and the other side of the arm portion 112, 122 is collectively referred to as a second arm 132. Wherein the ends of the two arms (1) and (2) of the ϋ-shaped core U on the rear side are connected to each other by the connecting portion 113 and the other ends of the two arms (1) and 121 are free ends; the same 'U-shaped core, two arms of 12 There is also a terminal 121, 122

The connecting portions i23 are connected to each other, and the other ends of the two arm portions 121, 122 are also free ends. The first winding 201 is wound around a coil (not shown) adjacent to the 1; 1; type core! The surface of the frame body 31 of the first arm portion m is received by a power source to generate a first magnetic field; the second winding 2〇2 is configured to wind a coil (not shown) adjacent to the second core of the υυ-type core i The surface of the arm portion 32 of the arm portion 132, the second magnetic field, thereby canceling the first magnetic field generated by the winding 201 which is the same but magnetically opposite. Referring to FIG. 4 and FIG. 5, when the transformer 10 is assembled, the two frames 31 and 32 are respectively accommodated in the two receiving grooves 61〇 and 62〇 of the outer casing 6; then, the U-shaped cores η and 12 are respectively The free ends are respectively formed in the two through holes 310' 320 of the frame body, and the connecting portions 113, 123 of the cores 11, 12 are blocked by the partition plate 61 and exposed to the frame bodies 31, 32 and The outer casing 6. Referring to FIGS. 4 and 6, the transformer 100 has a first primary winding 21, a first primary winding 22, a first secondary winding 23, and a second secondary winding 24, and the first and second primary windings 21, 22 are first and The second secondary windings 23, 24 are not placed flat. Other embodiments, if it is a single secondary winding or multiple sets of 201013713 · grade windings can also be 'multiple groups only need to require the principle of left and right balance; need to explain 实 'actually, the two primary magnetic field distance is closer to # , with a principle of no more than 1 〇. Referring to circle 6 and FIG. 7, the magnetic field on the right side of the transformer 1〇〇 is generated by the first primary winding 21, and the magnetic field on the left side is generated by the second primary winding 22. Assuming that the upper magnetic field is above S and below is N, the left magnetic field must be above. N and the lower side is S. If the magnetic flux of the magnetic field on the left side is, the magnetic flux of the magnetic field on the right side is equal to +沴. The secondary output 10 voltages of the first and second secondary windings 23, 24 of the transformer 100 are:

Vo\ = Ns\» v〇2 = Ns2 Equation 5 dt dt Since the double primary magnetic fluxes are equal, but the magnetic fluxes of opposite polarities are +4, when an external wire 5 straddles the surface of the transformer, the outer wires 5 are on the left and right sides. The voltage induced by the magnetic field is the sum of the induced voltages of the external wires 5 in the two magnetic fields, respectively:

Vx = Vx\ + Vx2 = ~^l + ^± = 0 Equation 6 In other words, the external conductor 5 has a total voltage of zero in the opposite primary magnetic field of opposite polarity, so that the external conductor 5 is not Any induced current is generated 'so that the transformer of the present invention having a UU-type winding arrangement is used' and the electromagnetic interference to external conductors or circuits can be completely eliminated by the dual primary magnetic field design of opposite polarity. Referring to FIG. 8, another design of the preferred embodiment is that the first and second primary windings 2, 22' and the first and second secondary windings 23, 24' are respectively disposed at an intersection (compared to FIG. 6). The first and second primary windings 21, 22 and the first 12 201013713, the second secondary winding 23, 24 are semi-outer, and the port is a millimeter setting), regardless of the setting mode 'only—the second primary winding 21 ', 22' can produce a double primary magnetic field of opposite polarity. The preferred embodiment is applied to the spectral vibration type power transformer, except that the two sets of the first and second primary windings 2 having the same characteristics are identical, the human-level winding, and the single-group output and the multi-group output can be used. , but no more than three groups, and the principle of 'left and right balance' is required to be distributed at the left and right ends of the secondary. ❹ This embodiment is applied to the backlight power transformer. In addition to using the first and second primary windings 21 and 22 with the same characteristics of the two sets, the secondary winding can be single output or dual output, and the single secondary winding requires equalization. When the two sets of windings are connected in series to form a double output, the two sets of characteristics must be the same, and they are placed on the left and right sides of the secondary end. As shown in Table 1, the power consumption of the 42" LCD TV is compared. 'Using the traditional backlight power transformer and the backlight power transformer of the present invention after the experiment', the power loss of the backlight power transformer of the present invention is less, and the environmental protection and energy saving requirements are met. .

Table 1 Traditional backlight power transformer The backlight power transformer of the present invention 24 volts 400 volts 400 volts power loss 220~240 180~200 160-180 (unit: watt) 13 201013713 Example: the work factor factor is 扼 罾 _ 罾 see Figure 9 The concept of the present invention can also be applied to the power factor correction choke device 4 'power factor correction choke device 4 as long as two sets of first and second primary windings 41, 42 having the same characteristics, and the first and second primary windings 41, 42 can be separated from the secondary winding (not shown) or overlapped, depending on the leakage inductance required by the application circuit. If a larger leakage is required, a separate type of 'no leakage inductance is used. Overlapping. As described above, the UU-type core winding configuration method, device and transformer have the following effects: 1. The UU-type core winding configuration method of the present invention can overcome the external electromagnetic interference generated by a single magnetic field of the UU-type iron core transformer. problem. 2. The UU-type core transformer can have a larger winding window area and therefore has the advantage of carrying a larger current or power output. 3. The complementary function of the dual primary magnetic field can improve the conversion efficiency of the transformer itself. It is especially suitable for resonant power transformers, backlight power transformers, power factor correction choke devices, and other power transformers that require thin, high efficiency, energy saving and environmental protection. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing one type of a type of core transformer in which a primary winding and a secondary winding are on the same side; 14 201013713 FIG. 2 is a schematic view showing a uu type core transformer Another type of 疋 primary winding and secondary winding are respectively located on the opposite side of the bilateral winding; FIG. 3 is a flow chart illustrating the flow of the method for winding the core of the present invention; FIG. 4 is an exploded perspective view of the present invention The components of the UXJ type core winding device of the invention; '' Fig. 5 is a perspective assembled view showing the winding device of the UU type core after the components of Fig. 4 are smashed; and Fig. 6 is a schematic view showing the transformer The magnetic field on the right is generated by the first primary winding, and the magnetic field on the left is generated by the second primary winding. Figure 7 is a schematic diagram showing the induced voltage of the external conductor in the double primary magnetic field of opposite polarity; '' Figure 8 is a schematic diagram illustrating the transformer The primary winding and the secondary winding are respectively disposed and arranged; and FIG. 9 is - not intended to illustrate that the winding configuration method of the present invention can also be used for power factor repair Choke means. 15 201013713 [Explanation of main component symbols] [General] 7 .......... External conductor 81, 931 primary winding 82, 932 secondary winding 9 ..... UU type core Transformer 90 .........power 91 ......... UU type core 911 .... first arm 912 ....... second arm [this creation 】 100.......Transformer 1 ..........UU type core 11,12 ·_υ type core 111, 112, 121, 122............ Arm 131 first arm 201 .... first winding 202 .... second winding 21 , 21 ' , 41 ......... first primary Winding 22 ' 22, ' 42 ..... 2nd primary winding 23, 23'. First secondary winding 24, 24'. Second secondary winding 3... .... Winding frame 31, 32 · · Frame body 310, 320 Through hole 301 ~ 304 Step 4 .......... Power factor correction choke device 5 ......... .External wire 6 ..... casing

132 second arm portion 610, 620 receiving groove 113, 123 connecting portion 16

Claims (1)

201013713 X. Patent application scope: L A method for configuring a winding of a uu-type iron core, comprising the following steps: (a) providing a UU-shaped iron core having a first arm portion and being different from the first arm portion a second arm on the side; (b) providing a first winding wound around the first arm and a second winding wound around the second arm; and (c) the first winding generates a first A magnetic field, the second winding generates a second magnetic field having the same magnetic flux but opposite magnetic properties, and canceling the first magnetic field by the second magnetic field. 2. The UU-type core winding configuration method according to claim 1, wherein the first winding is a first primary winding, the second winding is a second primary winding, and the first primary winding is The number of turns and the wire diameter of the first primary winding are the same. 3. The winding arrangement method of the core according to the scope of claim 2, wherein the step (b) further comprises the following sub-steps: (bl) providing a first secondary winding around the first arm The winding and 9 are wound around the second secondary winding of the second arm. 4. The utj type core winding configuration method according to claim 3, wherein the first primary winding and the second primary winding are parallel to the first stage winding and the second secondary winding Set and set. 5. According to the winding configuration method of the (10) type iron core described in the second paragraph of the patent scope, the leakage current is used for each of the primary windings and the secondary winding, respectively, or the leakage current is not required. The windings are overlapped with the secondary windings respectively. 17 201013713 6 - A winding device of a UU type core, comprising: a UU core having a first arm and a second arm on an opposite side of the first arm; a first winding, winding Generating a first magnetic field in the first arm portion and receiving a power supply; and a second winding winding around the second arm portion to generate a first magnetic field having the same magnetic flux and opposite magnetic field The second magnetic field cancels the first magnetic field. 7. According to the winding device of the core type described in the sixth paragraph of the patent scope of the Chinese patent, wherein the first winding is a first primary winding, the second winding is a first primary winding, and the whistle, the side - The number of turns and the wire diameter of the primary winding and the first primary winding are the same. 8. The UU-type core winding device according to the scope of the patent application 篦7 τΕ further comprising - a second secondary winding wound around the first arm portion and a second secondary burning portion at the second arm portion group. 9. According to the 8th box of the patent application scope, the winding of the UU-type core described in item ^ is the ❿-stage winding, the 兮-th winding, the second primary winding and the first-time H): The windings are parallel or cross set. 10. The UU-type core winding device according to the scope of application patent No. 7, i' = - power factor correction choke device. 11. According to the scope of patent application i, in which the UU-type core winding device described in the item requires leakage current, the disk & uses separate separation, T, the primary winding and the secondary winding and the secondary winding respectively The leakage current is an overlapping winding method for each of the primary windings. 18 201013713 12. A transformer comprising: a UU core comprising two sets of U-shaped cores, the same side of each u-shaped core being a first arm and the other side being a second arm, 1. The ends of the second arm are connected to each other by a connecting portion; a bobbin has two through holes which are parallel and spaced apart from each other, and the U-shaped cores are oppositely disposed in the two through holes. And the first arm portion and the first arm portion of each of the u-shaped cores are connected to form a closed loop; a first winding is a winding bobbin wound around the first arm portion of each of the U-shaped cores a surface, and receiving a power supply to generate a first magnetic field; and a second winding winding the wire around the surface of the bobbin adjacent to the second arm of each U-shaped core and generating a magnetic flux However, a second magnetic field of opposite magnetic properties counteracts the first magnetic field. 13. The transformer of claim 12, further comprising a housing having a spacer and two receiving slots separated by the spacer, and the bobbin includes each of the through holes to accommodate Each of the two-column frame of the 铁-shaped core is accommodated in each of the accommodating grooves separated by the partition plate. H. The transformer according to claim 13, wherein the first winding is a "primary winding, the first winding is a second primary winding, and the first primary winding and the first primary winding The number of turns and the wire diameter are the same. According to the scope of claim 14, the first and second windings wound around the first arm and the second arm are wound 19 201013713 The transformer of claim 15, wherein the first primary winding, the second primary winding is parallel to the first secondary winding and the second secondary winding or 17. The transformer according to any one of claims 12 to 16, which is a resonant power transformer or a backlight power transformer. 20