Digital voltage regulation circuit based on permanent magnet eddy current repulsion mechanism breaker power supply

Abstract

The utility model discloses a digital voltage regulation circuit based on a permanent magnet eddy current repulsion mechanism breaker power supply. The digital voltage regulation circuit comprises a voltage regulation button S1, a voltage regulation button S2, a level conversion circuit unit, a digital potentiometer and a magnetic eddy current repulsion mechanism breaker power supply circuit unit. The voltage regulation key S1 and the voltage regulation key S2 are connected with the level conversion circuit unit, the level conversion circuit unit is connected with the digital potentiometer, and the digital potentiometer is connected with the magnetic eddy current repulsion mechanism circuit breaker power supply circuit unit; an internal memory of the digital potentiometer is utilized, and power-down storage can still be kept by a simple circuit under the conditions of not adding external storage, pure hardware and a single chip microcomputer, so that a digital key voltage regulating function is realized, and a set value is regulated to be balanced; through a simple logic circuit, a storage unit in the digital potentiometer is utilized, and a control interface of a single-chip microcomputer is also reserved, so that the defects of mechanical wear and easy environmental influence caused by long-time use of a traditional mechanical potential are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage regulation, in particular to a voltage regulating circuit of a permanent magnet eddy current repulsion mechanism circuit breaker power supply. Background Art

[0002] With the expansion of power systems and the rapid growth of grid loads, short-circuit current levels in power systems are increasing year by year. These enormous short-circuit currents pose a serious threat to the safe operation of power systems. Consequently, circuit breakers based on permanent magnetic eddy current repulsion mechanisms are widely used. This places new demands on the operating speed and reliability of permanent magnetic eddy current repulsion circuit breakers. One of the key factors affecting the stability and speed of permanent magnetic eddy current repulsion circuit breakers is their energy storage device. In industrial applications, energy storage devices are subject to varying degrees of impact in complex operating environments, affecting their stable energy storage. This is particularly evident in the fact that their output voltage is susceptible to adverse operating conditions, such as dust, vibration, and high temperatures, which can affect the stable operation of permanent magnetic eddy current repulsion circuit breakers. Therefore, continuously improving the safe and stable operation of permanent magnetic eddy current repulsion circuit breakers is a long-term task. Summary of the Invention

[0003] The utility model provides a dedicated digital voltage regulating circuit for a circuit breaker power supply based on a permanent magnet eddy current repulsion mechanism, which can at least solve one of the technical problems in the background technology.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A digital voltage regulating circuit based on a permanent magnetic eddy current repulsion mechanism circuit breaker power supply, comprising a voltage regulating button S1, a voltage regulating button S2, a level conversion circuit unit, a digital potentiometer, and a magnetic eddy current repulsion mechanism circuit breaker power supply circuit unit;

[0006] The voltage adjustment button S1 controls the voltage addition and level conversion circuit unit connection;

[0007] The voltage adjustment button S2 controls the voltage reduction and level conversion circuit unit connection;

[0008] The level conversion circuit unit is connected to the digital potentiometer;

[0009] The digital potentiometer is connected to the eddy current repulsion mechanism circuit breaker power supply circuit unit and outputs voltage to an external circuit.

[0010] Furthermore, the present invention includes resistors R1, R2, R3, R4, R5, capacitors C1, C2, C3, C4, C5, C6, C7, C8, voltage adjustment buttons S1, S2, lamp bead LED1, diode D2, voltage conversion chip U1, trigger chips U3A, U3B, digital potentiometer U2;

[0011] Connect the VIN terminal of the converter chip U1 to resistor R1, which serves as the +F13V voltage input terminal of the digital voltage regulator circuit. Connect one end of capacitor C4 to the VIN terminal of the converter chip U1 and the other end to the GND terminal of the converter chip U1. Connect one end of capacitor C8 to the OUT terminal of the converter chip U1 and the other end to the GND terminal of the converter chip U1. Capacitors C1, C2, and C3 are connected in parallel across capacitor C8.

[0012] The digital potentiometer U2 includes 8 ports: VCC power supply terminal, INC input terminal, U / D input terminal, CS chip select input terminal, VSS terminal, RH high voltage terminal, RW sliding terminal, and RL low voltage terminal.

[0013] Among them, the INC terminal is connected to the resistor R3, capacitor C6, the positive electrode of the diode D2, and the CP terminal of the trigger chip U3A. The other end of the resistor R3 is connected to the +5V voltage source output by the converter chip U1, and the other end of the capacitor C6 is connected to GND. The U / C terminal is connected to the resistor R2 and capacitor C5. The other end of the resistor R2 is connected to the +5V voltage source output by the converter chip U1, and the other end of the capacitor C5 is connected to GND. The CS chip select input terminal is connected to the resistor R4, capacitor C7, and the R terminal of the trigger chip U3A. The other end of the resistor is connected to the The other end of capacitor C7 is grounded; the VSS end is connected to the RL low voltage end and the RW sliding end, and the three are grounded; the RH end serves as the module output end RH of the digital potentiometer;

[0014] The VDD and 1D terminals of the trigger chip U3A are connected to the +5V voltage source, and the Q terminal is connected to the 2R terminal of the trigger chip U3B. Connect the 2S terminal of the trigger chip U3B, and connect the VSS terminal and the S terminal to the ground at the same time; connect the VDD terminal of the trigger chip U3B to the +5V voltage source, and the VSS terminal to the ground;

[0015] The voltage adjustment button S1 is connected to the connection point of the resistor R3 and the capacitor C6, and the other end is grounded; the voltage adjustment button S2 is connected to the connection point of the resistor R2 and the capacitor C5, and the other end is grounded.

[0016] Furthermore, the potentiometer of the present invention is a X9C103 type potentiometer.

[0017] Furthermore, the potentiometer of the present invention includes a resistor array of 99 resistor units, and there are tap points between each unit and at two end points that are accessed by the sliding unit.

[0018] As can be seen from the above technical solution, the stability design of the power storage module of the permanent magnetic eddy current repulsion mechanism circuit breaker reduces energy storage module failures that cause the circuit breaker to be unable to operate and reduces accident losses. The permanent magnetic eddy current repulsion mechanism circuit breaker operates in a high-voltage environment for a long time. Traditional potentiometers require close adjustment. The present invention can be used in conjunction with a single-chip microcomputer to achieve remote adjustment. The permanent magnetic eddy current repulsion mechanism circuit breaker operates in a harsh environment for a long time. The present invention is more resistant to corrosion, high temperature, and vibration than traditional potentiometers. It can maintain strong vibration resistance, corrosion resistance, and dust resistance in the working environment of the permanent magnetic eddy current repulsion mechanism circuit breaker.

[0019] The utility model proposes a digital voltage regulating circuit based on a permanent magnetic eddy current repulsion mechanism circuit breaker power supply, comprising a voltage regulating button S1, a voltage regulating button S2, a level conversion circuit unit, a digital potentiometer, and a magnetic eddy current repulsion mechanism circuit breaker power supply circuit unit; the voltage regulating button S1, the voltage regulating button S2 are connected to the level conversion circuit unit, the level conversion circuit unit is connected to the digital potentiometer, and the digital potentiometer is connected to the magnetic eddy current repulsion mechanism circuit breaker power supply circuit unit; the internal memory of the digital potentiometer is utilized, and without adding external storage, a simple circuit can still be used to maintain power-off storage under conditions of pure hardware and a single-chip microcomputer, thereby realizing a digital button voltage regulating function and setting value adjustment balance; through a simple logic circuit, the internal storage unit of the digital potentiometer is utilized, and the control interface of the single-chip microcomputer is also retained, thereby solving the shortcomings of traditional mechanical potentiometers in which mechanical wear and susceptibility to environmental influences occur during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the structural block diagram of the digital voltage regulation circuit;

[0021] Figure 2 This is the schematic diagram of the digital voltage regulation circuit. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0023] like Figure 1As shown, the dedicated digital voltage regulating circuit based on the permanent magnetic eddy current repulsion mechanism circuit breaker power supply described in this embodiment specifically includes a voltage adjustment button S1, a voltage adjustment button S2, a level conversion circuit unit, a digital potentiometer, and a magnetic eddy current repulsion mechanism circuit breaker power supply circuit unit; the voltage adjustment button S1 controls voltage addition, and the voltage adjustment button S2 controls voltage subtraction, both of which are connected to the level conversion circuit unit, the level conversion circuit unit is connected to the digital potentiometer, the digital potentiometer is connected to the magnetic eddy current repulsion mechanism circuit breaker power supply circuit unit and outputs voltage to the external circuit; wherein the external output interface of the voltage regulating circuit is compatible with mechanical voltage regulation and is an interface used for air conditioner voltage regulation.

[0024] The structure of the digital potentiometer is as follows Figure 2 As shown, it specifically includes resistors R1, R2, R3, R4, R5, capacitors C1, C2, C3, C4, C5, C6, C7, C8, voltage adjustment button S1, voltage adjustment button S2, lamp bead LED1, diode D2, voltage conversion chip U1, trigger chips U3A, U3B, digital potentiometer U2;

[0025] Connect the VIN terminal of the converter chip U1 to resistor R1, which serves as the +F13V voltage input terminal of the digital voltage regulator circuit. Connect one end of capacitor C4 to the VIN terminal of the converter chip U1 and the other end to the GND terminal of the converter chip U1. Connect one end of capacitor C8 to the OUT terminal of the converter chip U1 and the other end to the GND terminal of the converter chip U1. Capacitors C1, C2, and C3 are connected in parallel across capacitor C8.

[0026] The digital potentiometer U2 includes 8 ports: VCC power supply terminal, INC input terminal, U / D input terminal, CS chip select input terminal, VSS terminal, RH high voltage terminal, RW sliding terminal, and RL low voltage terminal.

[0027] Among them, the INC terminal is connected to the resistor R3, capacitor C6, the positive electrode of the diode D2, and the CP terminal of the trigger chip U3A. The other end of the resistor R3 is connected to the +5V voltage source output by the converter chip U1, and the other end of the capacitor C6 is connected to GND. The U / C terminal is connected to the resistor R2 and capacitor C5. The other end of the resistor R2 is connected to the +5V voltage source output by the converter chip U1, and the other end of the capacitor C5 is connected to GND. The CS chip select input terminal is connected to the resistor R4, capacitor C7, and the R terminal of the trigger chip U3A. The other end of the resistor is connected to the The other end of capacitor C7 is grounded; the VSS end is connected to the RL low voltage end and the RW sliding end, and the three are grounded; the RH end serves as the module output end RH of the digital potentiometer;

[0028] The VDD and 1D terminals of the trigger chip U3A are connected to the +5V voltage source, and the Q terminal is connected to the 2R terminal of the trigger chip U3B. The 2S terminal of the trigger chip U3B is connected, and the VSS terminal and the S terminal are connected to the ground at the same time; the VDD terminal of the trigger chip U3B is connected to the +5V voltage source, and the VSS terminal is grounded.

[0029] The digital potentiometer has an internal memory for storing the voltage adjustment value.

[0030] The voltage adjustment button S1 is connected to the connection point of the resistor R3 and the capacitor C6, and the other end is grounded; the voltage adjustment button S2 is connected to the connection point of the resistor R2 and the capacitor C5, and the other end is grounded.

[0031] The following is a detailed description of the level changes at various points in the circuit when the dedicated digital voltage regulation circuit based on the permanent magnet eddy current repulsion mechanism circuit breaker power supply is working:

[0032] The specific level conversion principle of the digital voltage regulation circuit when the voltage is increased is:

[0033] Initial state: The voltage adjustment button S1 is not pressed. At this time, the INC end of the digital potentiometer U2 is high, the U / D end is low, and the CP port of the trigger chip U3A has no state. The corresponding R end of the trigger chip U3A is low, and the 1D end is always high. When the voltage adjustment button S1 is kept at a low potential, the Q end of the trigger chip U3A is low. The output of the terminal is low and high respectively, which corresponds to the 2R terminal of the trigger chip U3B. The 2S terminal is low and high respectively, which corresponds to the high level output of the 2Q terminal. The terminal outputs a low level. At this time, the CS terminal of the digital potentiometer U2 is at a low level and is in an adjustable state. Press the voltage adjustment button S1, and the INC terminal and CP terminal of the trigger chip U3A obtain a falling edge. The corresponding state of CD4013 remains unchanged, and the corresponding state of the CS terminal of the digital potentiometer U2 remains unchanged. However, the INC terminal obtains a falling edge, and the RH value becomes larger, so the output value of the corresponding switching power supply becomes larger.

[0034] Among them, the digital potentiometer uses the X9C103 potentiometer, which includes a resistor array of 99 resistor units (connected in series). There are tap points accessed by the sliding unit between each resistor unit and at the two end points. The position of the sliding unit is controlled by three input terminals: CS, U / D and INC. Among them, CS is the chip select input terminal, U / D is the increase / decrease input terminal, and INC is the increase input terminal.

[0035] When the three-terminal input changes N times, the corresponding resistor array slides up or down N times, and the corresponding resistance value increases or decreases (the corresponding voltage response increases or decreases). The specific voltage adjustment process is:

[0036] When the button S1 (N is the number of times it is pressed) is pressed, the RH voltage changes to the current voltage RH0. The adjusted voltage value is RH, and the formula is RH=RH0+5V*(N / 100). According to the voltage regulation requirements, the 5V (module power supply voltage) voltage can be changed to the range of (0V-15V);

[0037] When the voltage adjustment button S1 is released, CP1 gets a rising edge, and the INC end of the digital potentiometer U2 becomes a high potential; at this time, the Q end of the trigger chip U3A changes from a low potential to a high potential. The terminal changes from high potential to low potential, the corresponding 2R terminal of trigger chip U3B changes to high potential, and the S terminal of trigger chip U3A changes to low potential. At this time, the CS terminal of the corresponding digital potentiometer U2 obtains a rising edge. Because the capacitor C7 and the resistor R4 form a delay, the R terminal of the trigger chip U3A becomes a high level 0.5MS after the CS obtains the rising edge, so that the Q terminal of the trigger chip U3A outputs a low potential. The terminal outputs a high potential, then the 2R terminal of the corresponding trigger chip U3B is at a low potential, and the 2S terminal is at a high potential, thereby causing the 2Q terminal to output a high level. The CS terminal of the digital potentiometer returns to its initial state from a low level.

[0038] The specific working scenarios of the digital voltage regulation circuit are as follows:

[0039] When the S1 button is pressed, the RH value will increase by 0.05V. After the RH value increases to 5V, there is no voltage change when the S1 button is pressed. When the S2 button is pressed, the RH value will decrease by 0.05V. After the RH value decreases to 0V, there is no voltage change when the S2 button is pressed.

[0040] The principle of level change when the digital voltage regulation circuit decreases voltage is as follows:

[0041] Initial state: The voltage adjustment button S2 is not pressed, the INC end of the digital potentiometer U2 is high, the U / D end of the digital potentiometer U2 is low, and the CP port of the trigger chip U3A has no state. At this time, the R end of the trigger chip U3A is low, the 1D end is always high, the S end is always low, and the Q end outputs low. The terminal outputs high potential, then the 2R terminal of the corresponding trigger chip U3B is low potential, the 2S terminal is high potential, and the 2Q terminal is high level. The end is low level; the CS end of the digital potentiometer U2 is low level and is in an adjustable state; at this time, the voltage adjustment button S2 is pressed, the INC end and CP end of the digital potentiometer U2 obtain a falling edge, and the U / D end becomes a low level. At this time, the corresponding state of the trigger chip U3B remains unchanged, and the state of the CS end corresponding to the digital potentiometer U2 remains unchanged, but the INC end of the digital potentiometer U2 obtains a falling edge, and the U / D end becomes a low level, then the RH value becomes smaller, and the corresponding output value of the switching power supply becomes smaller; when the voltage adjustment button S2 is released, the CP end of the trigger chip U3A obtains a rising edge, and the INC end of the digital potentiometer U2 becomes a high potential. At this time, the Q end changes from a low potential to a high potential, The terminal changes from high potential to low potential, the corresponding 2R terminal of trigger chip U3B changes to high potential, and the S terminal of trigger chip U3A changes to low potential. At this time, the CS terminal corresponding to digital potentiometer U2 obtains a rising edge. Because capacitor C7 and resistor R4 form a delay, the R terminal of trigger chip U3A becomes high level 0.5MS after the CS terminal obtains a rising edge, then the Q terminal of corresponding trigger chip U3A outputs a low potential. The terminal outputs high potential, and the corresponding trigger chip U3B's 2R terminal is low potential, 2S terminal is high potential, 2Q terminal is high level, The CS terminal of the digital potentiometer U2 is low and returns to the initial state. The trigger logic principle is shown in Table 1:

[0042] Table 1 Truth table of trigger chip CD4013

[0043]

[0044] To achieve power-off storage in the digital voltage regulator circuit, the digital potentiometer needs to implement a specific pulse signal, as shown in Table 2:

[0045] Table 2. Truth table of pulse signal during power-off storage

[0046]

[0047] The overall level change of the dedicated digital voltage regulating circuit of the permanent magnet eddy current repulsion mechanism circuit breaker power supply during operation is shown in Table 3.

[0048] Table 3 Truth table of the digital voltage regulating circuit of the utility model when working

[0049]

[0050]

[0051] In summary, the present invention utilizes the internal memory of the digital potentiometer and can maintain power-off preservation without external storage through pure hardware and a single-chip microcomputer using a simple circuit, thereby realizing the digital key voltage regulation function and setting value adjustment balance; through a simple logic circuit, utilizing the internal storage unit of the digital potentiometer, and also retaining the control interface of the single-chip microcomputer, the shortcomings of traditional mechanical potentiometers such as mechanical wear and susceptibility to environmental influences caused by long-term use are solved.

[0052] To overcome the problem of traditional mechanical potentiometers in existing permanent magnet eddy current repulsion mechanism circuit breaker power supply energy storage modules being susceptible to environmental influences, resulting in inaccurate and unstable output voltage, this utility model designs a key-press voltage regulation circuit, a logic level storage and conversion circuit, a microcontroller voltage regulation, and a voltage monitoring interface. By designing a hardware circuit and utilizing fewer external interfaces, this system achieves hardware and software voltage regulation, with software voltage monitoring automatically adjusting the set value. A simple and stable logic level conversion circuit designed using a trigger utilizes the internal storage unit of the digital potentiometer, achieving stable hardware voltage regulation and preventing data loss. This significantly improves the stability of the permanent magnet eddy current repulsion mechanism circuit breaker power supply.

[0053] Each embodiment in this specification is described in a related manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For related parts, refer to the description of the method embodiment.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A digital voltage regulating circuit for a circuit breaker power supply based on a permanent magnet eddy current repulsion mechanism, characterized in that: It includes voltage adjustment button S1, voltage adjustment button S2, level conversion circuit unit, digital potentiometer, magnetic eddy current repulsion mechanism circuit breaker power supply circuit unit; The voltage adjustment button S1 controls the voltage addition and level conversion circuit unit connection; The voltage adjustment button S2 controls the voltage reduction and level conversion circuit unit connection; The level conversion circuit unit is connected to the digital potentiometer; The digital potentiometer is connected to the eddy current repulsion mechanism circuit breaker power supply circuit unit and outputs voltage to an external circuit.

2. The digital voltage regulating circuit of the circuit breaker power supply based on the permanent magnet eddy current repulsion mechanism according to claim 1 is characterized in that: Specifically including resistors R1, R2, R3, R4, R5, capacitors C1, C2, C3, C4, C5, C6, C7, C8, voltage adjustment buttons S1, S2, lamp bead LED1, diode D2, voltage converter chip U1, trigger chips U3A, U3B, digital potentiometer U2; Connect the VIN terminal of the converter chip U1 to resistor R1, which serves as the +F13V voltage input terminal of the digital voltage regulator circuit. Connect one end of capacitor C4 to the VIN terminal of the converter chip U1 and the other end to the GND terminal of the converter chip U1. Connect one end of capacitor C8 to the OUT terminal of the converter chip U1 and the other end to the GND terminal of the converter chip U1. Capacitors C1, C2, and C3 are connected in parallel across capacitor C8. The digital potentiometer U2 includes 8 ports: VCC power supply terminal, INC input terminal, U / D input terminal, CS chip select input terminal, VSS terminal, RH high voltage terminal, RW sliding terminal, and RL low voltage terminal. Among them, the INC terminal is connected to the resistor R3, capacitor C6, the positive electrode of the diode D2, and the CP terminal of the trigger chip U3A. The other end of the resistor R3 is connected to the +5V voltage source output by the converter chip U1, and the other end of the capacitor C6 is connected to GND. The U / C terminal is connected to the resistor R2 and capacitor C5. The other end of the resistor R2 is connected to the +5V voltage source output by the converter chip U1, and the other end of the capacitor C5 is connected to GND. The CS chip select input terminal is connected to the resistor R4, capacitor C7, and the R terminal of the trigger chip U3A. The other end of the resistor is connected to the The other end of capacitor C7 is grounded; the VSS end is connected to the RL low voltage end and the RW sliding end, and the three are grounded; the RH end serves as the module output end RH of the digital potentiometer; The VDD and 1D terminals of the trigger chip U3A are connected to the +5V voltage source, and the Q terminal is connected to the 2R terminal of the trigger chip U3B. Connect the 2S terminal of the trigger chip U3B, and connect the VSS terminal and the S terminal to the ground at the same time; connect the VDD terminal of the trigger chip U3B to the +5V voltage source, and the VSS terminal to the ground; The voltage adjustment button S1 is connected to the connection point of the resistor R3 and the capacitor C6, and the other end is grounded; the voltage adjustment button S2 is connected to the connection point of the resistor R2 and the capacitor C5, and the other end is grounded.

3. The digital voltage regulating circuit of the circuit breaker power supply based on the permanent magnet eddy current repulsion mechanism according to claim 2, characterized in that: The potentiometer is an X9C103 type potentiometer.

4. The digital voltage regulating circuit of the circuit breaker power supply based on the permanent magnet eddy current repulsion mechanism according to claim 3, characterized in that: The potentiometer includes a resistor array of 99 resistor units, and there are tap points accessed by sliding units between each resistor unit and at two end points.

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