CN113708657B - Electric spark voltage-stabilizing power supply - Google Patents
Electric spark voltage-stabilizing power supply Download PDFInfo
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- CN113708657B CN113708657B CN202111020796.3A CN202111020796A CN113708657B CN 113708657 B CN113708657 B CN 113708657B CN 202111020796 A CN202111020796 A CN 202111020796A CN 113708657 B CN113708657 B CN 113708657B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M11/00—Power conversion systems not covered by the preceding groups
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses an electric spark voltage-stabilizing power supply, which relates to the technical field of voltage-stabilizing control and comprises a power supply feedback switching control module, a power switch control module, a signal sampling conditioning module, a main control module, a PWM driving module, a pulse chopping module and a communication module; the power supply feedback switching control module is used for providing power supply, the power switch control module is used for generating pulse current, the signal sampling conditioning module is used for sampling and processing voltage current signals, the main control module is used for receiving signals, outputting control signals and driving signals, the PWM driving module is used for outputting pulses, the pulse chopping module absorbs surge, and the communication module is used for communication. The electric spark voltage-stabilized power supply effectively inhibits pulse surge, does not need a high-voltage breakdown loop, realizes automatic switching of electric spark power supply on-off and power supply feedback points, and improves voltage and current detection accuracy by adopting the operational amplifier circuit and the voltage and current detection circuit, thereby improving voltage-stabilized output accuracy.
Description
Technical Field
The invention relates to the technical field of voltage stabilization control, in particular to an electric spark voltage stabilization power supply.
Background
The electric spark machining is a non-contact special machining technology, which is widely applied because the machining of difficult-to-cut materials and parts with complex shapes can be performed, wherein the most important part is a pulse power supply, the quality of the pulse power supply directly influences various technological indexes of electric spark forming machining, such as machining quality precision, machining speed and the like, in the traditional electric spark machining power supply, the electric spark machining is controlled by controlling pulse current generation through a power switch, current limiting is performed through a series-connection current limiting resistor, the consumption of power supply is easy to cause in the process, in addition, when the distance between an electric spark electrode and the power supply is changed, the power supply cannot meet the electric spark power requirement, the machining quality precision is reduced, most of power switch control series-connection inductance and capacitance devices are easy to generate voltage and current surges during the electric spark machining, and the stabilizing effect of the electric spark power supply is easy to be influenced.
Disclosure of Invention
The embodiment of the invention provides an electric spark voltage-stabilizing power supply for solving the problems in the background technology.
According to an embodiment of the present invention, there is provided an electric spark voltage-stabilized power supply including: the system comprises a power supply feedback switching control module, a power switch control module, a signal sampling conditioning module, a main control module, a PWM driving module, a pulse chopper module and a communication module;
the power supply feedback switching control module is used for providing power supply for the electric spark and controlling the automatic switching of the electric spark power supply;
the power switch control module is connected with the output end of the power supply feedback switching control module and is used for generating pulse current through the work of the power switch;
the signal sampling conditioning module is connected with the output end of the power switch control module and the feedback end of the power supply feedback switching control module and is used for sampling the voltage and current signals output by the power switch control module and the feedback voltage signals output by the power supply feedback switching control module and outputting the processed voltage and current signals;
the main control module is connected with the output end of the signal sampling conditioning module and used for receiving the voltage and current signals output by the signal sampling conditioning module, connecting the control end of the power supply feedback switching control module and the driving end of the PWM driving module and used for outputting control signals and driving signals and respectively controlling the power supply feedback switching control module and the PWM driving module to work;
the PWM driving module is connected with the power switch control module and is used for outputting pulse width modulation signals and driving the power switch control module to work;
the pulse chopper module is connected with the output end of the power switch control module and is used for absorbing voltage and current surge generated by the electric spark voltage-stabilized power supply;
the communication module is connected with the communication end of the main control module and is used for realizing wireless communication between the user terminal and the main control module.
Compared with the prior art, the invention has the beneficial effects that: the electric spark voltage-stabilized power supply has the advantages of simple structure, high efficiency, energy saving, effective suppression of the influence of pulse surge, no need of a high-voltage breakdown loop, realization of automatic switching functions of electric spark power supply on-off and power supply feedback points, guarantee of stable switching and supply of the power supply, generation of pulse current by adopting a power switch control circuit, improvement of detection precision of the voltage and the current by adopting a voltage and current detection circuit formed by an operational amplifier circuit and an isolation circuit, judgment of the detected voltage and current value by a software system in a processor, adjustment of the output pulse voltage, and improvement of working efficiency of electric spark machining.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of an electric spark voltage-stabilizing power supply according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of an electric spark voltage-stabilized power supply provided by an example of the invention.
Fig. 3 is a schematic block diagram of a signal sampling conditioning module according to an embodiment of the present invention.
Fig. 4 is a circuit diagram of the current signal sampling process provided in fig. 3.
Fig. 5 is a circuit diagram of the voltage signal sampling processing provided in fig. 3.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides an electric spark voltage-stabilized power supply, including: the power supply feedback switching control module 1, the power switch control module 2, the signal sampling conditioning module 3, the main control module 4, the PWM driving module 5, the pulse chopper module 6 and the communication module 7;
specifically, the power supply feedback switching control module 1 is used for providing power supply for the electric spark and controlling automatic switching of the electric spark power supply;
the power switch control module 2 is connected with the output end of the power supply feedback switching control module 1 and is used for generating pulse current through the work of a power switch;
the signal sampling conditioning module 3 is connected with the output end of the power switch control module 2 and the feedback end of the power supply feedback switching control module 1, and is used for sampling the voltage and current signals output by the power switch control module 2 and the feedback voltage signals output by the power supply feedback switching control module 1 and outputting the processed voltage and current signals;
the main control module 4 is connected with the output end of the signal sampling and conditioning module 3 and is used for receiving the voltage and current signals output by the signal sampling and conditioning module 3, connecting the control end of the power supply feedback switching control module 1 and the driving end of the PWM driving module 5 and is used for outputting control signals and driving signals and respectively controlling the power supply feedback switching control module 1 and the PWM driving module 5 to work;
the PWM driving module 5 is connected with the power switch control module 2 and is used for outputting pulse width modulation signals and driving the power switch control module 2 to work;
the pulse chopper module 6 is connected with the output end of the power switch control module 2 and is used for absorbing voltage and current surge generated by the electric spark voltage-stabilized power supply;
and the communication module 7 is connected with the communication end of the main control module 4 and is used for realizing wireless communication between the user terminal and the main control module 4.
In a specific embodiment, the power supply feedback switching control module 1 can provide power for the electric spark stabilized power supply by adopting a power supply voltage compensation mode, so that the power supply meets the power consumption requirement of electric sparks; the power switch control module 2 can adopt a power switch Guan Guanzu to form a BUCK step-down circuit to control the voltage conversion of the module; the signal sampling conditioning module 3 can detect the output voltage signal in a resistor voltage division mode, and is matched with the operational amplifier and surrounding components thereof to perform isolated voltage conversion and bias treatment, and can detect the current signal in a current transformer J1 mode, and is matched with the operational amplifier and surrounding components thereof to perform voltage conversion, voltage following and voltage bias treatment; the main control module 4 can adopt a Digital Signal Processor (DSP) or a Field Programmable Gate Array (FPGA) as a main control chip, analyze and process the received signals through an internal software system, and record and control the regulated output of the electric spark power supply; the PWM driving module 5 may adopt an isolation driver U3 to drive the power switch control module 2 to work, which is not described herein; the pulse chopper module 6 can adopt a peak power supply absorption circuit to inhibit voltage and current surge generated when the switching element is switched on and off; the communication module 7 may implement data interaction with the user terminal by using one of RS485 communication, ZIGBEE (ZIGBEE) communication, and GPRS (General packet radio service ) communication, which will not be described herein.
Example 2: referring to fig. 2, in a specific embodiment of the spark stabilized power supply according to the present invention, the power feedback switching control module 1 includes a first power supply V1, a second power supply V2, a first resistor R1, a fourth resistor R4, a fifth resistor R5, a first diode D1, a first switch K1, a second relay K2, a third relay K3, a second switch K2-1, a third switch K2-2, a fourth switch K2-3, a fifth switch K2-4, a sixth switch K3-1, and a seventh switch K3-2;
specifically, the positive electrode of the first power supply V1 is connected with the fourth switch K2-3, the first end of the first resistor R1, the positive electrode of the first diode D1, the first switch K1, the sixth switch K3-1, the fifth resistor R5 and the second relay K2, the second end of the first resistor R1 is connected with the other end of the fourth switch K2-3 and is connected with the positive electrode of the second power supply V2 through the second switch K2-1, the negative electrode of the second power supply V2 is connected with the first end of the fourth resistor R4 and the fifth switch K2-4 through the third switch K2-2, the other end of the fifth switch K2-4, the second end of the fourth resistor R4, the third relay K3 and the seventh switch K3-2 are connected with the negative electrode of the first power supply V1, the negative electrode of the first diode D1 is connected with the other end of the first switch K1, the other end of the third relay K3 is connected with the other end of the fifth resistor R5 and the other end of the sixth switch K3-1, and the other end of the seventh switch K3-2 is connected with the other end of the second switch K2-2.
Further, the power switch control module 2 includes a first switch tube VT1, a second switch tube VT2, a first capacitor C1, a first inductor L1, and a second diode D2;
specifically, the first end of the first capacitor C1 and the collector of the first switching tube VT1 are both connected to the output end of the power feedback switching control module 1, the emitter of the first switching tube VT1 is connected to the collector of the second switching tube VT2 and the first inductor L1, and the other end of the first inductor L1 is connected to the anode of the second diode D2.
Further, the pulse chopper module 6 includes a third diode D3, a fourth diode D4, and a spike voltage absorbing circuit 601;
specifically, the anode of the third diode D3 is connected to the cathode of the second diode D2, the cathode of the third diode D3 is connected to the first end of the spike voltage absorbing circuit 601 and the cathode of the fourth diode D4, and both the anode of the fourth diode D4 and the second end of the spike voltage absorbing circuit 601 are grounded.
Further, the PWM driving module 5 includes an isolation driver U3; the main control module 4 comprises a first controller U1.
Specifically, a first pulse output end of the isolation driver U3 is connected with a gate of the first switching tube VT1, a second pulse output end of the isolation driver U3 is connected with a gate of the second switching tube VT2, a first driving end of the first controller U1 is connected with a first input end of the isolation driver U3, and a second driving end of the first controller U1 is connected with a second input end of the isolation driver U3.
In a specific embodiment, the first switching tube VT1 and the second switching tube VT2 may be IGBTs (Insulated Gate Bipolar Transistor, insulated gate bipolar transistors), and the isolation driver U3 controls the switching tube to be turned off so as to generate the pulse current; the isolation driver U3 can be EXB841/840 and has an IGBT overcurrent protection function; the first switch K1 may be a relay contact switch (not shown here), which is controlled by the first controller U1 and is a normally open contact; the first resistor R1 and the fourth resistor R4 are compensation resistors, so that electric spark damage caused by excessively high power supply output during switching is prevented; the second switch K2-1, the third switch K2-2, the fourth switch K2-3 and the fifth switch K2-4 can be selected from contact switches of the second relay K2, the second relay K2 is controlled electrically, wherein the second switch K2-1 and the third switch K2-2 are normally open contacts, and the fourth switch K2-3 and the fifth switch K2-4 are normally closed contacts; the sixth switch K3-1 and the seventh switch K3-2 can be contact switches of a third relay K3, the third relay K3 is electrically controlled, wherein the sixth switch K3-1 is a normally closed contact, and the seventh switch K3-2 is a normally open contact; the second diode D2 is connected in series with the output end of the inductor, so that the phenomenon of current countercurrent caused by voltage oscillation in the gap can be prevented; the first controller U1 can select TMS320F28035 as a digital signal processor of a control core, and has the advantages of high speed, high control precision and the like.
Example 3: referring to fig. 2, 3, 4 and 5, in a specific embodiment of the electric spark stabilized power supply according to the present invention, the signal sampling and conditioning module 3 includes a current signal sampling unit 301, a current signal conditioning unit 302, a first voltage signal sampling unit 303, a second voltage signal sampling unit 304 and a second voltage signal conditioning unit 305;
specifically, the current signal sampling unit 301 is configured to sample a current signal output by the power switch control module 2;
a current signal conditioning unit 302, configured to perform voltage conversion, voltage following, and voltage bias processing on the sampled current signal;
a first voltage signal sampling unit 303, configured to sample a power supply in the power supply feedback switching control module 1;
a second voltage signal sampling unit 304, configured to sample a voltage signal output by the power switch control module 2;
a second voltage signal conditioning unit 305, configured to implement conversion and bias processing of an isolation voltage on the sampled voltage signal; the first end of the current signal sampling unit 301 and the first end of the second voltage signal sampling unit 304 are both connected to the output end of the power switch control module 2, the second end of the current signal sampling unit 301 is connected to the second input end of the main control module 4 through the current signal conditioning unit 302, the second end of the second voltage signal sampling unit 304 is connected to the third input end of the main control module 4 through the second voltage signal conditioning unit 305, and the first voltage signal sampling unit 303 is connected to the first input end of the main control module.
Further, the current signal sampling unit 301 includes a current transformer J1; the current signal conditioning unit 302 includes a sixth resistor R6, a second capacitor C2, a first operational amplifier A1, a seventh resistor R7, an eighth resistor R8, a third capacitor C3, a ninth resistor R9, a first power supply VREFT, a first resistor R1, a second operational amplifier A2, and a tenth resistor R10;
specifically, the output end of the current transformer J1 is connected to the sixth resistor R6, the second capacitor C2 and the in-phase end of the first operational amplifier A1, the other end of the sixth resistor R6 and the other end of the second capacitor C2 are both grounded, the inverting end of the first operational amplifier A1 is connected to the output end of the first operational amplifier A1 and the eighth resistor R8 through the seventh resistor R7, the other end of the eighth resistor R8 is connected to the third capacitor C3, the ninth resistor R9 and the in-phase end of the second operational amplifier A2, the other end of the third capacitor C3 and the other end of the ninth resistor R9 are both connected to the first power source VREF, and the inverting end of the second operational amplifier A2 is connected to the output end of the second operational amplifier A2 and the second input end of the first controller U1 through the tenth resistor R10.
Further, the first voltage signal sampling unit 303 includes a second resistor R2 and a third resistor R3;
specifically, the first end of the second resistor R2 is connected to the second end of the first resistor R1, the second end of the second resistor R2 is connected to the first end of the third resistor R3 and the first input end of the first controller U1, and the second end of the third resistor R3 is connected to the first end of the fourth resistor R4.
Further, the second voltage signal sampling unit 304 includes a twelfth resistor R12 and an eleventh resistor R11; the second voltage signal conditioning unit 305 includes a fourth capacitor C4, a thirteenth resistor R13, a fifth capacitor C5, a sixth capacitor C6, a second power supply +5v, a first coupler U2, a third operational amplifier A3, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, and a seventeenth resistor R17;
specifically, the eleventh resistor R11 is connected to the twelfth resistor R12, the fourth capacitor C4, and the thirteenth resistor R13, the other end of the thirteenth resistor R13 is connected to the second end of the first coupler U2, the first end of the first coupler U2 is connected to the second power supply +5v and is connected to the third end of the first coupler U2 through the fifth capacitor C5, the fourth end of the first coupler U2, the fifth end, and the ground end, the sixth end of the first coupler U2 is connected to the seventeenth resistor R17 and the in-phase end of the third operational amplifier A3 through the sixteenth resistor R16, the seventh end of the first coupler U2 is connected to the inverting end of the third operational amplifier A3 through the fifteenth resistor R15 and is connected to the output end of the third operational amplifier A3 and the third input end of the first controller U1 through the fourteenth resistor R14, and the other ends of the twelfth resistor R12, the fourth capacitor C4, and the seventeenth resistor R17 are all grounded.
In a specific embodiment, the current transformer J1 may be a hall current sensor, and collects a current signal output by the electric spark power supply in an isolated manner; the sixth resistor R6 forms a voltage conversion circuit and converts the current signal sampled by the current transformer J1 into a voltage signal; the first operational amplifier A1 and the second operational amplifier A2 can be TLC2272 operational amplifiers to form a voltage follower; the ninth resistor is a bias resistor, so that the voltage signal is subjected to bias treatment, and the sampling precision of small current is improved; the first coupler U2 can be selected from HCPL7840 photoelectric coupler to realize signal isolation; the third operational amplifier A3 is a differential operational amplifier composed of TLC2272 operational amplifiers, and is matched with surrounding components to realize conversion and bias of voltage signals.
In the embodiment of the invention, a direct current power supply is used as a voltage-stabilized power supply of the electric spark and is transmitted to a power switch control module 2 through a power supply feedback switching control module 1, wherein a main control module 4 samples and conditions the output voltage and current of the power switch control module 2 through a signal sampling conditioning module 3, a software system in the main control module 4 analyzes and processes a sampling signal and further sends a PWM signal to a PWM driving module 5, the PWM driving module 5 further outputs the PWM signal to the power switch control module 2 so as to control the power switch to output the required stable pulse voltage, when the signal sampling conditioning module 3 detects that the output voltage can not meet the working voltage of the electric spark anyway, the main control module 4 controls the power supply feedback switching control module 1 to switch the power supply, then the sampling signal output by the signal sampling conditioning module 3 regulates the power switch control module 2 so as to output the stable pulse voltage again, and the sampled voltage and current signal output by the main control module 4 are transmitted to a user terminal through a communication module 7 so as to realize data interaction; in the power supply feedback switching control module 1, the first controller U1 controls the first switch K1 to be closed, the third relay K3 is electrified to operate, and the second relay K2 is electrified to operate, so that the switching of a power supply is realized, and finally the closing time of a switching tube is adjusted through the detection control power switch control module 2, so that the voltage stabilization of the power supply output is realized; in the power switch control module 2, when the first switch tube VT1 is controlled to be turned on, the second switch tube VT2 is turned off, a breakdown voltage equivalent to an input voltage is provided for an electric spark gap, when the first switch tube VT1 is turned on for a short time and the signal sampling conditioning module 3 does not detect the breakdown of the gap, the first switch tube VT1 is turned off, the next electric spark processing period is accessed, when the first switch tube VT1 is turned on and does not reach a set breakdown time, the gap discharge is accessed when the detection gap is broken, the first switch tube VT1 is continuously turned on until abnormal discharge, the first switch tube VT1 is turned off, after the set dead time, the second switch tube VT2 is turned on, the first inductor L1 is freewheeled until the current is 0, and then the second switch tube VT2 is turned off, the working state of the power switch tube is repeated, and then the cycle of the electric spark processing period is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. An electric spark voltage-stabilizing power supply, which is characterized in that:
the electric spark voltage-stabilizing power supply comprises: the system comprises a power supply feedback switching control module, a power switch control module, a signal sampling conditioning module, a main control module, a PWM driving module, a pulse chopper module and a communication module;
the power supply feedback switching control module is used for providing power supply for the electric spark and controlling the automatic switching of the electric spark power supply;
the power switch control module is connected with the output end of the power supply feedback switching control module and is used for generating pulse current through the work of the power switch;
the signal sampling conditioning module is connected with the output end of the power switch control module and the feedback end of the power supply feedback switching control module and is used for sampling the voltage and current signals output by the power switch control module and the feedback voltage signals output by the power supply feedback switching control module and outputting the processed voltage and current signals;
the main control module is connected with the output end of the signal sampling conditioning module and used for receiving the voltage and current signals output by the signal sampling conditioning module, connecting the control end of the power supply feedback switching control module and the driving end of the PWM driving module and used for outputting control signals and driving signals and respectively controlling the power supply feedback switching control module and the PWM driving module to work;
the PWM driving module is connected with the power switch control module and is used for outputting pulse width modulation signals and driving the power switch control module to work;
the pulse chopper module is connected with the output end of the power switch control module and is used for absorbing voltage and current surge generated by the electric spark voltage-stabilized power supply;
the communication module is connected with the communication end of the main control module and is used for realizing wireless communication between the user terminal and the main control module;
the power supply feedback switching control module comprises a first power supply, a second power supply, a first resistor, a fourth resistor, a fifth resistor, a first diode, a first switch, a second relay, a third relay, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch and a seventh switch;
the positive electrode of the first power supply is connected with a fourth switch, a first end of a first resistor, the anode of a first diode, the first switch, a sixth switch, a fifth resistor and a second relay, the second end of the first resistor is connected with the other end of the fourth switch and is connected with the positive electrode of the second power supply through the second switch, the negative electrode of the second power supply is connected with the first end of the fourth resistor and the fifth switch through a third switch, the other end of the fifth switch, the second end of the fourth resistor, the third relay and the seventh switch are connected with the negative electrode of the first power supply, the cathode of the first diode is connected with the other end of the first switch, the other end of the third relay is connected with the other end of the fifth resistor and the other end of the sixth switch, and the other end of the seventh switch is connected with the other end of the second relay;
the power switch control module comprises a first switch tube, a second switch tube, a first capacitor, a first inductor and a second diode;
the first end of the first capacitor and the collector electrode of the first switching tube are both connected with the output end of the power supply feedback switching control module, the emitter electrode of the first switching tube is connected with the collector electrode of the second switching tube and the first inductor, and the other end of the first inductor is connected with the anode of the second diode;
the PWM driving module comprises an isolation driver; the main control module comprises a first controller;
the first pulse output end of the isolation driver is connected with the grid electrode of the first switching tube, the second pulse output end of the isolation driver is connected with the grid electrode of the second switching tube, the first driving end of the first controller is connected with the first input end of the isolation driver, and the second driving end of the first controller is connected with the second input end of the isolation driver.
2. The electric spark voltage-stabilized power supply as claimed in claim 1, wherein the signal sampling and conditioning module comprises a current signal sampling unit, a current signal conditioning unit, a first voltage signal sampling unit, a second voltage signal sampling unit and a second voltage signal conditioning unit;
the current signal sampling unit is used for sampling a current signal output by the power switch control module;
the current signal conditioning unit is used for performing voltage conversion, voltage following and voltage bias treatment on the sampled current signal;
the first voltage signal sampling unit is used for sampling a power supply in the power supply feedback switching control module;
the second voltage signal sampling unit is used for sampling the voltage signal output by the power switch control module;
the second voltage signal conditioning unit is used for realizing conversion and bias treatment of isolation voltage on the sampled voltage signal;
the first end of the current signal sampling unit and the first end of the second voltage signal sampling unit are both connected with the output end of the power switch control module, the second end of the current signal sampling unit is connected with the second input end of the main control module through the current signal conditioning unit, the second end of the second voltage signal sampling unit is connected with the third input end of the main control module through the second voltage signal conditioning unit, and the first voltage signal sampling unit is connected with the first input end of the main control module.
3. The electric spark stabilized power supply as claimed in claim 2, wherein the current signal sampling unit includes a current transformer; the current signal conditioning unit comprises a sixth resistor, a second capacitor, a first operational amplifier, a seventh resistor, an eighth resistor, a third capacitor, a ninth resistor, a first power supply, a first resistor, a second operational amplifier and a tenth resistor;
the output end of the current transformer is connected with a sixth resistor, a second capacitor and an in-phase end of the first operational amplifier, the other end of the sixth resistor and the other end of the second capacitor are grounded, the inverting end of the first operational amplifier is connected with the output end of the first operational amplifier and an eighth resistor through a seventh resistor, the other end of the eighth resistor is connected with a third capacitor, a ninth resistor and the in-phase end of the second operational amplifier, the other end of the third capacitor and the other end of the ninth resistor are connected with a first power supply, and the inverting end of the second motion is connected with the output end of the second operational amplifier and the second input end of the first controller through a tenth resistor.
4. The electric spark stabilized power supply as claimed in claim 2, wherein the first voltage signal sampling unit includes a second resistor and a third resistor;
the first end of the second resistor is connected with the second end of the first resistor, the second end of the second resistor is connected with the first end of the third resistor and the first input end of the first controller, and the second end of the third resistor is connected with the first end of the fourth resistor.
5. The electric spark stabilized power supply as claimed in claim 2, wherein the second voltage signal sampling unit includes a twelfth resistor and an eleventh resistor; the second voltage signal conditioning unit comprises a fourth capacitor, a thirteenth resistor, a fifth capacitor, a sixth capacitor, a second power supply, a first coupler, a third operational amplifier, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor and a seventeenth resistor;
the eleventh resistor is connected with the twelfth resistor, the fourth capacitor and the thirteenth resistor, the other end of the thirteenth resistor is connected with the second end of the first coupler, the first end of the first coupler is connected with the second power supply and is connected with the third end of the first coupler, the fourth end of the first coupler, the fifth end and the ground end through the fifth capacitor, the sixth end of the first coupler is connected with the seventeenth resistor and the in-phase end of the third operational amplifier through the sixteenth resistor, the seventh end of the first coupler is connected with the inverting end of the third operational amplifier through the fifteenth resistor and is connected with the output end of the third operational amplifier and the third input end of the first controller through the fourteenth resistor, and the other end of the twelfth resistor, the other end of the fourth capacitor and the other end of the seventeenth resistor are all grounded.
6. The electric spark stabilized power supply as claimed in claim 1, wherein the pulse chopper module includes a third diode, a fourth diode and a spike voltage absorbing circuit;
the anode of the third diode is connected with the cathode of the second diode, the cathode of the third diode is connected with the first end of the peak voltage absorbing circuit and the cathode of the fourth diode, and the anode of the fourth diode and the second end of the peak voltage absorbing circuit are grounded.
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| CN114582299B (en) * | 2022-03-24 | 2023-02-07 | Tcl华星光电技术有限公司 | Polar plate voltage regulating circuit and method |
| CN114448262B (en) * | 2022-04-11 | 2022-06-17 | 深圳美利晶微电子科技有限公司 | Switching power supply based on MOS pipe |
| CN115189586A (en) * | 2022-09-07 | 2022-10-14 | 新铂科技(东莞)有限公司 | Power supply device capable of realizing multi-energy conversion output in pulse |
| CN115388433A (en) * | 2022-10-13 | 2022-11-25 | 深圳国爱全电化智慧科技有限公司 | Electric firing circuit and electric fire range |
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