Three-electrode high-frequency high-voltage pack, discharge control method and manufacturing device

Abstract

This application discloses a three-electrode high-frequency high-voltage transformer, a discharge control method, and a fabrication apparatus, belonging to the field of power electronics technology. The three-electrode high-frequency high-voltage transformer includes: two signal generation circuits, each with two outputs for outputting two complementary signals as high-frequency pulse signals; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable; two push-pull circuits, each with two inputs and two outputs, the two inputs respectively connected to the two outputs of one of the signal generation circuits; two boost coupling circuits, each with two inputs and one output, the two inputs respectively connected to the two outputs of one of the push-pull circuits; and a discharge circuit, including two inputs connected to the outputs of the two boost coupling circuits, for forming a three-way balanced discharge arc. This application aims to ensure balanced discharge among the three electrodes while reducing the size of the high-voltage transformer.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, and in particular to a three-electrode high-frequency high-voltage transformer, a discharge control method, and a fabrication apparatus. Background Technology

[0002] In fiber optic fusion splicing technology, high-voltage arc splicing is more advanced, typically employing a three-electrode arc. Currently, products on the market that generate a three-electrode arc primarily use standard pulses with a 120° phase difference to drive a three-channel inverter circuit, obtaining a three-phase AC voltage with a 120° phase difference, enabling discharge between the three electrodes. When a high-frequency high-voltage coil is used in the three-channel inverter circuit, the difference between the coils leads to poor discharge uniformity between the three electrodes; when a low-frequency high-voltage coil is used, the difference between the coils is reduced, but this increases the product's size.

[0003] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this application is to provide a three-electrode high-frequency high-voltage transformer, a discharge control method, and a fabrication apparatus, which aims to ensure balanced discharge among the three electrodes while reducing the volume of the high-voltage transformer.

[0005] To achieve the above objectives, this application provides a three-electrode high-frequency high-voltage transformer, comprising:

[0006] The system includes two signal generation circuits, each with two outputs for outputting two complementary signals as high-frequency pulse signals; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable.

[0007] Two push-pull circuits, each push-pull circuit including two inputs and two outputs, with the two inputs respectively connected to the two outputs of one of the signal generation circuits;

[0008] Two boost coupling circuits, each of which includes two inputs and one output, with the two inputs connected to the two outputs of one of the push-pull circuits respectively;

[0009] The discharge circuit includes two inputs, which are respectively connected to the outputs of two boost coupling circuits to form a three-way balanced discharge arc.

[0010] Optionally, each of the signal generation circuits includes a PWM control chip. The PWM drive signal A output terminal and the PWM drive signal B output terminal of the PWM control chip serve as two outputs of the signal generation circuit, and the two complementary signals are output as high-frequency pulse signals.

[0011] Optionally, each push-pull circuit includes two MOS transistors of different polarities and a high-frequency transformer. The input terminal of one of the MOS transistors is connected to one of the outputs of the signal generation circuit, and the input terminal of the other MOS transistor is connected to the other output of the signal generation circuit. The output terminals of one MOS transistor and the other MOS transistor are respectively connected to the two input terminals of the high-frequency transformer, and the two output terminals of the high-frequency transformer serve as the two outputs of the push-pull circuit.

[0012] Optionally, the push-pull power supply voltage is the same for each of the push-pull circuits.

[0013] This application also provides a discharge control method applied to the above-mentioned three-electrode high-frequency high-voltage transformer, comprising the following steps:

[0014] Two high-frequency pulse signals are generated using two signal generation circuits; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable.

[0015] The two high-frequency pulse signals are used to drive two push-pull circuits respectively to generate a first high voltage and a second high voltage.

[0016] The first high voltage and the second high voltage are boosted and coupled using a boost coupling circuit to obtain a first high-frequency high voltage and a second high-frequency high voltage.

[0017] Based on the first high-frequency high voltage and the second high-frequency high voltage, a third high-frequency high voltage is generated;

[0018] Using the first high-frequency high voltage, the second high-frequency high voltage, and the third high-frequency high voltage, three balanced discharge arcs are formed in the discharge circuit.

[0019] Optionally, if the push-pull power supply voltage of each of the push-pull circuits is the same, the step of generating two high-frequency pulse signals using two signal generation circuits respectively includes:

[0020] The PWM control chip in the two signal generation circuits adjusts the duty cycle of the high-frequency pulse signal so that when the two generated high-frequency pulse signals drive the two push-pull circuits respectively, the high voltage output by the two push-pull circuits is equal.

[0021] Optionally, the step of generating two high-frequency pulse signals using two signal generation circuits further includes:

[0022] The PWM control chip in the two signal generation circuits adjusts the frequency of the high-frequency pulse signal so that the first high-frequency high voltage, the second high-frequency high voltage, and the third high-frequency high voltage are equal, wherein the third high-frequency high voltage is the difference between the first high-frequency high voltage and the second high-frequency high voltage.

[0023] This application also provides a fabrication apparatus for fiber optic splicing and fiber optic combiner fabrication, comprising:

[0024] The three-electrode high-frequency high-voltage transformer as described above;

[0025] A processing chip that performs the steps of the discharge control method described above.

[0026] This application discloses a three-electrode high-frequency high-voltage transformer, a discharge control method, and a manufacturing apparatus. Compared with the prior art, which cannot balance the discharge balance between the three electrodes and the size of the product, this application uses two signal generation circuits, two push-pull circuits, and two boost coupling circuits. By adjusting the duty cycle and frequency of the high-frequency pulse signal output by the signal generation circuit, three balanced discharge arcs can be formed in the discharge circuit, ensuring the discharge balance between the three electrodes while reducing the size of the high-voltage transformer. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic block diagram of an embodiment of the three-electrode high-frequency high-voltage transformer of this application;

[0030] Figure 2 The circuit diagrams for the signal generation circuit and push-pull circuit of this application are shown below.

[0031] Figure 3 This is the circuit schematic of the boost coupling circuit of this application;

[0032] Figure 4 This is a schematic flowchart of an embodiment of the discharge control method of this application.

[0033] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0035] This application provides a three-electrode high-frequency high-voltage transformer, as shown in the following embodiments. Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the three-electrode high-frequency high-voltage transformer of this application.

[0036] In this embodiment, the three-electrode high-frequency high-voltage transformer includes:

[0037] The circuit 100 has two signal generation circuits, each of which has two outputs for outputting two complementary signals as high-frequency pulse signals; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable.

[0038] Two push-pull circuits 200, each push-pull circuit 200 includes two inputs and two outputs, and the two inputs are respectively connected to the two outputs of one of the signal generation circuits 100;

[0039] Two boost coupling circuits 300, each boost coupling circuit 300 includes two inputs and one output, and the two inputs are respectively connected to the two outputs of one of the push-pull circuits 200;

[0040] The discharge circuit 400 includes two inputs, which are respectively connected to the outputs of two boost coupling circuits 300 to form a three-way balanced discharge arc.

[0041] Compared with existing technologies where products for generating three-electrode arcs cannot simultaneously achieve discharge balance among the three electrodes and reduce product size, the embodiments of this application, through two signal generation circuits 100, two push-pull circuits 200, and two boost coupling circuits 300, and by adjusting the duty cycle and frequency of the high-frequency pulse signal output by the signal generation circuit 100, can form three balanced discharge arcs in the discharge circuit 400, ensuring discharge balance among the three electrodes while reducing the size of the high-voltage pack.

[0042] As an example, each signal generation circuit 100 includes a PWM control chip. The PWM drive signal A output terminal and the PWM drive signal B output terminal of the PWM control chip serve as two outputs of the signal generation circuit 100, and the two complementary signals are output as high-frequency pulse signals.

[0043] Reference Figure 2 , Figure 2 This is a circuit diagram of the signal generation circuit 100 and the push-pull circuit 200 of this application.

[0044] In this embodiment, the signal generation circuit 100 includes a PWM control chip U1, first resistors R1 to fifth resistors R5, first capacitors C1 to fifth capacitors C5, first variable resistors VR1 to second variable resistors VR2, and a first polarity capacitor C8.

[0045] In this configuration, the inverting input of the error amplifier of the PWM control chip U1 is electrically connected to the compensation signal input of its PWM comparator via the fifth resistor R5. The compensation signal input of the PWM comparator of the PWM control chip U1 is also grounded via the fifth capacitor C5. The non-inverting input of the error amplifier of the PWM control chip U1 is electrically connected to the moving pin of the first variable resistor VR1. One pin of the first variable resistor VR1 is electrically connected to the internal reference power supply output of the PWM control chip U1 via the second resistor R2. The other pin of the first variable resistor VR1 is grounded via the first resistor R1. The PWM control chip U1 uses an internal vibration clock signal. The external timing capacitor of the PWM control chip U1 is electrically connected to its external discharge resistor and grounded via the third capacitor C3. The external timing resistor terminal of 1 is grounded through the third resistor R3 and the second variable resistor VR2 in sequence. The external soft-start capacitor terminal of the PWM control chip U1 is grounded through the fourth capacitor C4. The external control terminal of the PWM control chip U1 is electrically connected to its internal reference power supply output terminal through the fourth resistor R4. The PWM drive signal A-channel output terminal and the PWM drive signal B-channel output terminal of the PWM control chip U1 serve as two outputs of the signal generation circuit 100. The open collector output terminal of the PWM control chip U1 and its chip power supply terminal are both connected to the power supply voltage VCC12 of the signal generation circuit 100. The first capacitor C1 and the first polarity capacitor C8 are connected in parallel to the power supply voltage VCC12 of the signal generation circuit 100. The internal reference power supply output terminal of the PWM control chip U1 is also grounded through the second capacitor C2.

[0046] As an example, the PWM control chip U1 is model number SG3525.

[0047] As an example, each push-pull circuit 200 includes two MOSFETs of different polarities and a high-frequency transformer. The input terminal of one of the MOSFETs is connected to one of the outputs of the signal generation circuit 100, and the input terminal of the other MOSFET is connected to another output of the signal generation circuit 100. The output terminals of one MOSFET and the other MOSFET are respectively connected to the two input terminals of the high-frequency transformer, and the two output terminals of the high-frequency transformer serve as the two outputs of the push-pull circuit 200.

[0048] Reference Figure 2 In this embodiment, the push-pull circuit 200 includes: a first MOSFET Q1, a second MOSFET Q2, a sixth resistor R6 to a ninth resistor R9, a sixth capacitor C6, a seventh capacitor C7, a second polarity capacitor C9, and a high-frequency transformer T1.

[0049] In this circuit, the gate (G) pin of the first MOSFET Q1 and one end of the seventh resistor R7 are electrically connected to the B-path output terminal of the PWM drive signal of the PWM control chip U1 in the signal generation circuit 100. The gate (G) pin of the second MOSFET Q2 and one end of the eighth resistor R8 are electrically connected to the A-path output terminal of the PWM drive signal of the PWM control chip U1 in the signal generation circuit 100. The sink (S) pin of the first MOSFET Q1, the other end of the seventh resistor R7, the sink (S) pin of the second MOSFET Q2, and the other end of the eighth resistor R8 are electrically connected and connected to the push-pull power supply voltage V24. The drain (D) pin of the first MOSFET Q1 is connected sequentially through the... The sixth resistor R6 and the sixth capacitor C6 are electrically connected to the push-pull power supply voltage V24. The drain pin of the first MOSFET Q1 is also connected to the fifth terminal of the high-frequency transformer T1. The drain pin of the second MOSFET Q2 is connected to the push-pull power supply voltage V24 through the ninth resistor R9 and the seventh capacitor C7. The drain pin of the second MOSFET Q2 is also connected to the third terminal of the high-frequency transformer T1. The fourth terminal of the high-frequency transformer T1 is connected to the push-pull power supply voltage V24 through the second polarity capacitor C9. The first and second terminals of the high-frequency transformer T1 serve as the two outputs of the push-pull circuit 200.

[0050] As an example, the push-pull power supply voltage is the same for each push-pull circuit 200.

[0051] For example, the push-pull power supply voltage for each push-pull circuit 200 is... Figure 2 The 24V DC power shown is shown.

[0052] As an example, refer to Figure 3 , Figure 3 This is the circuit schematic of the boost coupling circuit 300 of this application.

[0053] In this embodiment, the boost coupling circuit 300 includes tenth capacitor C10 to fourteenth capacitor C14, tenth resistor R10, first diode D1 to fourth diode D4 and transistor J1.

[0054] One end of the eleventh capacitor C11 and one end of the tenth capacitor C10 are electrically connected to the second terminal of the high-frequency transformer T1. The other end of the eleventh capacitor C11, the cathode of the first diode D1, the anode of the second diode D2, and one end of the twelfth capacitor C12 are electrically connected. The other end of the twelfth capacitor C12, the cathode of the third diode D3, and the anode of the fourth diode D4 are electrically connected. The anode of the first diode D1 is electrically connected to one end of the thirteenth capacitor C13, and is also electrically connected to the first terminal of the high-frequency transformer T1 and the collector of the transistor J1. The other end of the thirteenth capacitor C13, the cathode of the second diode D2, the anode of the third diode D3, and one end of the fourteenth capacitor C14 are electrically connected. The other end of the fourteenth capacitor C14, the cathode of the fourth diode D4, and one end of the tenth resistor R10 are electrically connected. The other end of the tenth capacitor C10 is electrically connected to the other end of the tenth resistor R10. This serves as the output of the boost coupling circuit 300, which is used to connect to the input of the discharge circuit 400.

[0055] This application also provides a discharge control method applied to the three-electrode high-frequency high-voltage transformer described in the above embodiments. (Refer to...) Figure 4 , Figure 4 This is a schematic flowchart of an embodiment of the discharge control method of this application.

[0056] In this embodiment, the discharge control method includes the following steps:

[0057] Step S10: Generate two high-frequency pulse signals using two signal generation circuits; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable.

[0058] Step S20: Use two high-frequency pulse signals to drive two push-pull circuits respectively to generate a first high voltage and a second high voltage;

[0059] Step S30: Use a boost coupling circuit to boost couple the first high voltage and the second high voltage to obtain the first high frequency high voltage and the second high frequency high voltage.

[0060] Step S40: Generate a third high-frequency high voltage based on the first high-frequency high voltage and the second high-frequency high voltage;

[0061] Step S50: Using the first high-frequency high voltage, the second high-frequency high voltage, and the third high-frequency high voltage, a three-way balanced discharge arc is formed in the discharge circuit.

[0062] Compared to existing technologies where the discharge balance among the three electrodes in products used to generate three-electrode arcs is poor, the embodiments of this application, through two signal generation circuits, two push-pull circuits, and two boost coupling circuits, and by adjusting the duty cycle and frequency of the high-frequency pulse signal output by the signal generation circuits, can form three balanced discharge arcs in the discharge circuit, ensuring discharge balance among the three electrodes.

[0063] The specific steps are as follows:

[0064] Step S10: Generate two high-frequency pulse signals using two signal generation circuits; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable.

[0065] As an example, if the push-pull power supply voltage is the same for each push-pull circuit, the steps of generating two high-frequency pulse signals using two signal generation circuits respectively include:

[0066] The PWM control chip in the two signal generation circuits adjusts the duty cycle of the high-frequency pulse signal so that when the two generated high-frequency pulse signals drive the two push-pull circuits respectively, the high voltage output by the two push-pull circuits is equal.

[0067] It should be noted that when the high-frequency pulse signal generated by one signal generation circuit is applied to one push-pull circuit, the high-frequency transformer in that push-pull circuit outputs a first high voltage V1 = A1sin(w1t + φ1) (where A1 is the amplitude, w1 is the period, and φ1 is the phase). Similarly, when the high-frequency pulse signal generated by the other signal generation circuit is applied to another push-pull circuit, the high-frequency transformer in that push-pull circuit outputs a second high voltage V2 = A2sin(w2t + φ2) (where A2 is the amplitude, w2 is the period, and φ2 is the phase). When the first and second high voltages discharge to ground simultaneously, their intensity is only related to the amplitudes A1 and A2. The amplitudes A1 and A2 are related to the push-pull circuit's supply voltage and the duty cycle of the high-frequency pulse signal. Therefore, when the push-pull power supply voltage of each push-pull circuit is the same, the amplitudes A1 and A2 can be made equal by adjusting the duty cycle of the high-frequency pulse signal, thereby making the first high voltage and the second high voltage equal, that is, achieving the balance of two of the three discharge arcs.

[0068] As an example, the step of generating two high-frequency pulse signals using two signal generation circuits also includes:

[0069] The PWM control chip in the two signal generation circuits adjusts the frequency of the high-frequency pulse signal so that the first high-frequency high voltage, the second high-frequency high voltage, and the third high-frequency high voltage are equal, wherein the third high-frequency high voltage is the difference between the first high-frequency high voltage and the second high-frequency high voltage.

[0070] It should be noted that making the first high-frequency high voltage, the second high-frequency high voltage, and the third high-frequency high voltage equal can be understood as making the first high voltage, the second high voltage, and the third high voltage equal.

[0071] It should be noted that the third high voltage corresponding to the third discharge arc in the three-channel discharge arc is V3 = V1 - V2 = A1sin(w1t + φ1) - A2sin(w2t + φ2). In practical applications, this can be equivalent to V3' = A3sin(w3t + φ3). When the amplitude A3 is equal to the amplitudes A1 and A2, the three discharge arcs are mutually balanced. The equality of amplitude A3 with amplitudes A1 and A2 can be achieved by adjusting the frequency of the high-frequency pulse signal output by each signal generation circuit. Furthermore, adjusting the frequency of the high-frequency pulse signal output by each signal generation circuit will not affect the intensity of the first and second high voltage discharges to ground.

[0072] This application also provides a fabrication apparatus for fiber optic splicing and fiber optic combiner fabrication, comprising:

[0073] The three-electrode high-frequency high-voltage transformer described in the above embodiment;

[0074] The processing chip executes the steps of the discharge control method described in the above embodiments.

[0075] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0076] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0077] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0078] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A three-electrode high-frequency high-voltage pack, characterized in that include: The system includes two signal generation circuits, each with two outputs for outputting two complementary signals as high-frequency pulse signals; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable. Two push-pull circuits, each push-pull circuit including two inputs and two outputs, with the two inputs respectively connected to the two outputs of one of the signal generation circuits; Two boost coupling circuits, each of which includes two inputs and one output, with the two inputs connected to the two outputs of one of the push-pull circuits respectively; The discharge circuit includes two inputs, which are respectively connected to the outputs of two boost coupling circuits, and are used to form a three-way balanced discharge arc based on the difference between the outputs of the two boost coupling circuits and the outputs of the two boost coupling circuits.

2. The three-electrode high-frequency high-voltage pack of claim 1, wherein, Each of the signal generation circuits includes a PWM control chip. The PWM drive signal A output terminal and the PWM drive signal B output terminal of the PWM control chip serve as two outputs of the signal generation circuit, and the two complementary signals are output as high-frequency pulse signals.

3. The three-electrode high frequency high voltage pack of claim 1, wherein, Each push-pull circuit includes two MOSFETs of different polarities and a high-frequency transformer. The input terminal of one of the MOSFETs is connected to one of the outputs of the signal generation circuit, and the input terminal of the other MOSFET is connected to the other output of the signal generation circuit. The output terminals of one MOSFET and the other MOSFET are respectively connected to the two input terminals of the high-frequency transformer, and the two output terminals of the high-frequency transformer serve as the two outputs of the push-pull circuit.

4. The three-electrode high-frequency high-voltage pack according to claim 1 or 3, characterized in that The push-pull power supply voltage is the same for each of the push-pull circuits.

5. A discharge control method characterized by, The application of the three-electrode high-frequency high-voltage transformer according to any one of claims 1 to 4 includes the following steps: Two high-frequency pulse signals are generated using two signal generation circuits; wherein the duty cycle and frequency of the high-frequency pulse signals are adjustable. The two high-frequency pulse signals are used to drive two push-pull circuits respectively to generate a first high voltage and a second high voltage. The first high voltage and the second high voltage are boosted and coupled using a boost coupling circuit to obtain a first high-frequency high voltage and a second high-frequency high voltage. A third high-frequency high voltage is generated based on the difference between the first high-frequency high voltage and the second high-frequency high voltage; Using the first high-frequency high voltage, the second high-frequency high voltage, and the third high-frequency high voltage, three balanced discharge arcs are formed in the discharge circuit.

6. The discharge control method according to claim 5, wherein If the push-pull power supply voltage of each of the push-pull circuits is the same, the step of generating two high-frequency pulse signals using two signal generation circuits respectively includes: The PWM control chip in the two signal generation circuits adjusts the duty cycle of the high-frequency pulse signal so that when the two generated high-frequency pulse signals drive the two push-pull circuits respectively, the high voltage output by the two push-pull circuits is equal.

7. The discharge control method according to claim 6, wherein The step of generating two high-frequency pulse signals using two signal generation circuits also includes: The PWM control chip in the two signal generation circuits adjusts the frequency of the high-frequency pulse signal so that the first high-frequency high voltage, the second high-frequency high voltage, and the third high-frequency high voltage are equal, wherein the third high-frequency high voltage is the difference between the first high-frequency high voltage and the second high-frequency high voltage.

8. A fabrication apparatus for fiber optic fusion splicing and fiber optic combiner fabrication, comprising: The three-electrode high-frequency high-voltage transformer according to any one of claims 1 to 4; A processing chip that performs the steps of the discharge control method according to any one of claims 5 to 7.

Images