CN117639521A - Distributed electronic equipment power supply control system, method and vacuum coating power supply - Google Patents
Distributed electronic equipment power supply control system, method and vacuum coating power supply Download PDFInfo
- Publication number
- CN117639521A CN117639521A CN202311651711.0A CN202311651711A CN117639521A CN 117639521 A CN117639521 A CN 117639521A CN 202311651711 A CN202311651711 A CN 202311651711A CN 117639521 A CN117639521 A CN 117639521A
- Authority
- CN
- China
- Prior art keywords
- power supply
- circuit
- frequency
- transformer
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001771 vacuum deposition Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 37
- 238000002955 isolation Methods 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 14
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract description 5
- 238000011105 stabilization Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/54—Controlling or regulating the coating process
-
- 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inverter Devices (AREA)
Abstract
A power supply control system and method for distributed electronic equipment and a vacuum coating power supply thereof comprise an AC/DC power supply, a push-pull DC/AC high-frequency conversion and corresponding control circuit, a multi-point distributed AC/AC isolation transformer and a peripheral rectifying, filtering and voltage stabilizing circuit which are connected in sequence; the push-pull DC/AC high-frequency conversion and the corresponding control circuit realize constant amplitude alternating current conversion of the direct current stabilized power supply; a multipoint distributed AC/AC isolation transformer or the like provides an isolated linear regulated power supply for the power units of the device control system. The invention has three-stage structure, front-stage voltage stabilization, middle-stage inversion and rear-stage high-frequency transformer isolation output. The high impedance of a long magnetic circuit of the output high-frequency transformer is high, and the fault cannot cause the protection action of a front stage; the outputs of the multipath rear stages are not mutually influenced; the high-frequency switch mode is operated, the efficiency is high, the volume is small, the modularization is convenient, the assembly and the maintenance are convenient, and the high-frequency switch mode can be flexibly distributed according to the requirement; the inter-stage capacitance of the high-frequency transformer is small, and interference is effectively isolated.
Description
Technical Field
The invention relates to electrical equipment in the field of electromechanical integrated products, in particular to a distributed electronic equipment power supply control system and method and a vacuum coating power supply. Belongs to the field of power supply control.
Background
The electric part of the vacuum coating power supply consists of a main circuit part and a control circuit part. The main circuit part is composed of various high-power switch devices and passive devices, is a power conversion output part, and the control circuit is responsible for controlling the working state of the main circuit, man-machine interaction and the like, and needs a multi-path single voltage-stabilized power supply and a positive-negative symmetrical voltage-stabilized power supply. The power supply part of the current common vacuum coating power supply control circuit in China is a multi-output linear stabilized power supply formed by a plurality of power frequency transformers and voltage regulators, and is characterized by large volume, large weight, lower cost and low efficiency, and the power supply part is relatively convenient to maintain, but has narrow input voltage range, large inter-stage capacitance of the power frequency transformers, can not effectively isolate the crosstalk among the power supply parts, and is not easy to modularized and flexibly distribute; or a plurality of AC/DC switch stabilized voltage supplies, the performance is stable, but the cost is high, the volume is large, the distribution cannot be realized flexibly, and the direct wiring installation on a high-density PCB (printed circuit board) is not realized.
In addition, CN114629356a discloses a method for controlling multiplexing output time sequence of a missile-borne secondary power supply, wherein the output end of the input reverse connection protection and EMI filter circuit is connected with the input ends of the power-down holding and pre-stabilizing circuit and the multiplexing output time sequence control circuit, the output end of the power-down holding and pre-stabilizing circuit is connected with the input end of the DC push-pull isolation conversion rectifying circuit, the output end of the DC push-pull isolation conversion rectifying circuit is connected with the input ends of the multiplexing output time sequence control circuit and the secondary voltage stabilizing filter output circuit, the output end of the multiplexing output time sequence control circuit is connected with the input end of the secondary voltage stabilizing filter output circuit, and when the secondary power supply is electrified, the output Vout1 leads to the output Vout2 and the output Vout 3; when the secondary power supply is powered down, the output Vout1 lags behind the output Vout2 and the output Vout 3. The invention has the advantages of little influence by load characteristics, high control precision and stability, flexible time sequence adjustment, controllable power-down time sequence and realization of advanced power-up and delayed power-down of a certain output. However, the input part of the prior art is not a switching power supply structure, and the input voltage is not large, and the performance is stable, but the input part has high cost, large volume and incapability of being flexibly distributed, and is more incapability of being directly wired and installed on a high-density PCB.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention discloses a distributed electronic equipment power supply control system, which has the following technical scheme:
a power supply control system of distributed electronic equipment comprises an AC/DC power supply, a push-pull DC/AC high-frequency conversion and corresponding control circuit, a multi-point distributed AC/AC isolation transformer and a peripheral rectifying, filtering and voltage stabilizing circuit which are connected in sequence; the method is characterized in that:
the AC/DC power supply adopts a direct current switch stabilized voltage supply to provide a total power supply for the control system;
the push-pull DC/AC high-frequency conversion and corresponding control circuit realizes the amplitude value 1 of the direct-current stabilized power supply: 1, alternating current conversion;
the multipoint distributed AC/AC isolation transformer and the peripheral rectifying, filtering and voltage stabilizing circuit provide isolated linear voltage stabilizing power for the power utilization unit of the equipment control system.
Preferably, it is: the push-pull DC/AC conversion and corresponding control circuit comprises a push-pull switch inverter circuit: the high-frequency transformer T2 is symmetrically connected with NMOS tubes Q2a and Q2b and is used for controlling the circuit 2; the high-frequency transformer T2 is provided with primary symmetrical double-input windings and secondary single-output windings, and the double-input windings of the high-frequency transformer T2 are connected in series; the center tap of the double-input winding of the high-frequency transformer T2 is connected to the positive electrode of the direct-current power supply, the sources of the NMOS tubes Q2a and Q2b are respectively connected to the two ends of the primary winding of the T2, and the drains of the NMOS tubes Q2a and Q2b are connected together and connected with the negative electrode of the direct-current power supply; the control circuit 2 generates pulse signals for driving the NMOS transistors Q2a and Q2b to conduct alternately and under-voltage closing signals.
Preferably, it is: the multi-point distributed AC/AC isolation transformer and the peripheral rectifying, filtering and voltage stabilizing circuit comprise high-frequency transformers T3a-T3n, and the peripheral rectifying, filtering and voltage stabilizing circuit comprises a half-bridge rectifying circuit consisting of diodes, a filtering capacitor C3a and a full-wave rectifying single-power voltage stabilizing output consisting of a three-terminal voltage stabilizer VR3 a; full-bridge rectification circuit composed of diodes, filter capacitors C3C1 and C3C2, and full-bridge rectification dual-power voltage-stabilizing output composed of three-terminal voltage stabilizer VR3C1 and VR3C 2.
Preferably, it is: the primary of the high-frequency transformer T3a-T3n is connected with the secondary of the push-pull DC/AC converter transformer T2, the high-frequency transformer T3a-T3n has long magnetic circuit high impedance characteristic, and the change of the load does not affect other distribution units.
The invention also discloses a distributed electronic equipment power supply control method, which is based on the distributed electronic equipment power supply control system and is characterized in that:
the control circuit 1 controls the conduction of the single-ended flyback inverter switching tube Q1, because the conduction duty ratio of the Q1 is smaller than 50%, the stored energy of the high-frequency flyback transformer T1 is fed back to the power supply end by the D12, C12 and R11 during the closing period and the magnetic flux of the high-frequency flyback transformer T1 is reset to zero, and meanwhile, the resistors R12, R13, R14, D14 and U1 form an isolated output voltage feedback signal which is input into the control circuit 1 and participates in controlling the conduction time of the single-ended flyback inverter switching tube Q1, so that the output end of the DC/AC/DC converter is automatically stabilized at a designed direct-current voltage value, and the final output voltage is set by changing the voltage division ratio of the R13 and the R14;
the control circuit 2 generates a drive signal with 180 degrees of phase to drive the NMOS transistors Q2a and Q2b to conduct alternately, and the secondary coupling of the high-frequency transformer T2 is symmetrical with the alternating current square wave to provide energy for the multipoint distributed AC/AC isolation transformer and the peripheral rectifying and filtering voltage stabilizing circuit, and the multipoint distributed AC/AC isolation transformer has the protection of under-voltage, over-voltage and over-current output.
The invention also discloses a vacuum coating power supply, which is characterized in that: the distributed electronic equipment power supply control system comprises the distributed electronic equipment power supply control system.
The invention also discloses a vacuum coating power supply, which is characterized in that: the control of the vacuum coating power supply is realized by adopting the power supply control method of the distributed electronic equipment.
The beneficial effects are that:
the input part is a switching power supply structure, the input voltage range is wide, and primary isolation is generated; the push-pull DC/AC conversion generates low-resistance secondary energy output and secondary isolation, so that the subsequent remote energy transmission is facilitated; the long magnetic circuit of the point-distributed AC/AC isolation transformer has high impedance, short circuit can not cause the front-stage short circuit protection and other unit working states, the circuit reliability is high, and three times of isolation are generated.
The peripheral rectifying, filtering and voltage stabilizing circuit adopts linear voltage stabilization, the noise is extremely low, the output of the AC/AC isolation transformer is matched with the voltage stabilizing value, and the power consumption of the linear voltage stabilization is slight.
The control power supply system for the power supply works in a high-frequency switch mode, has high efficiency, small volume, convenient modularization, convenient assembly and maintenance and flexible distribution as required; the inter-stage capacitance of the high-frequency transformer is small, and interference is effectively isolated.
Drawings
Fig. 1 is a block diagram showing the overall structure of the present invention.
Fig. 2 is a schematic circuit diagram of the AC/DC power supply of the present invention.
Fig. 3 is a schematic diagram of a push-pull DC/AC conversion and corresponding control circuit according to the present invention.
Fig. 4 is a schematic diagram of a distributed AC/AC isolation transformer and a peripheral rectifying, filtering and voltage stabilizing circuit according to the present invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only, and other obvious variations will occur to those skilled in the art, see figures 1-4.
The structure of the flexibly distributed control power supply system applied to the electronic equipment is as follows: a power supply control system of distributed electronic equipment comprises an AC/DC power supply, a push-pull DC/AC high-frequency conversion and corresponding control circuit, a multi-point distributed AC/AC isolation transformer and a peripheral rectifying, filtering and voltage stabilizing circuit which are connected in sequence; the method is characterized in that:
the AC/DC power supply adopts a direct current switch stabilized voltage supply to provide a total power supply for the control system; the circuit structure of the AC/DC power supply is as follows: the output voltage feedback circuit is composed of an input filter L1, a full-bridge rectifying circuit D11, a filter capacitor C11, a DC/AC/DC converter, a control circuit 1 and a reference voltage stabilizing tube D14, an isolated optocoupler U1, resistors R12, R13 and R14 which are sequentially connected; the DC/AC/DC converter comprises a single-ended flyback inverter switch tube Q1, a high-frequency flyback transformer T1, a high-frequency rectifier D13 and a filter capacitor C13, wherein a resistor R11 and a capacitor C12 are connected in parallel and then connected with the cathode of a diode D12 to serve as a magnetic reset element of the high-frequency flyback transformer T1 to be connected with the source electrode of the single-ended flyback inverter switch tube Q1, and the drain electrode is connected with the cathode of an alternating-current 220V rectification power supply; the resistors R12, R13 and R14, the reference voltage stabilizing tube D14 and the isolation optocoupler U1 form an isolated output voltage feedback signal.
The reverse end of the secondary side of the high-frequency counterattack transformer T1 is connected with a high-frequency rectifier D13, and the high-frequency rectifier D13 is connected with a filter capacitor C13; the control circuit 1 controls the conduction of Q1, because the conduction duty ratio of Q1 is smaller than 50%, the stored energy of T1 is fed back to the power supply end by D12, C12 and R11 during the closing period and simultaneously realizes the magnetic flux reset of T1 to zero, meanwhile, R12, R13, R14, D14 and U1 form isolated output voltage feedback signals to be input to the control 1 and participate in controlling the conduction time of Q1, so that the output end of the DC/AC/DC converter is automatically stabilized at the designed DC36V voltage value, and the voltage division ratio of R13 and R14 is changed to set the final output voltage.
The DC/AC converter comprises a push-pull circuit and a high-frequency transformer T2, wherein the circuit consists of NMOS tubes Q2a and Q2b which are symmetrically connected, the high-frequency transformer T2 is provided with symmetrical double-input windings and single-output windings, the double-input windings of the high-frequency transformer T2 are connected in series, the center tap of the double-input windings is connected with the positive pole of an AC/DC direct-current power supply, the sources of the NMOS tubes Q2a and Q2b are respectively connected with two ends of the double-input windings of the high-frequency transformer T2, the drains of the NMOS tubes Q2a and Q2b are connected together and are connected with the negative pole of the AC/DC direct-current power supply, and when the NMOS tubes Q2a and Q2b are alternately conducted, symmetrical alternating-current square waves are coupled at the secondary sides of the high-frequency transformer T2 to provide energy for the following multi-point distributed AC/AC isolation transformer and the peripheral rectifying, filtering and voltage stabilizing circuit; the corresponding control circuit generates a drive signal with 180 degrees of phase to drive the NMOS transistors Q2a and Q2b to conduct alternately, and the corresponding control circuit has necessary under-voltage overvoltage overcurrent protection.
The high-frequency transformers T3a-T3n of the multi-point distributed AC/AC isolation transformer and the peripheral rectifying, filtering and voltage stabilizing circuit have the characteristic of long magnetic circuit and high impedance, and the primary of the high-frequency transformers T2 of the DC/AC converter are connected with the secondary of the high-frequency transformers; the peripheral rectifying, filtering and voltage stabilizing circuit is characterized in that a secondary center tap of a high-frequency transformer T3a is a single-power-supply voltage stabilizing output negative electrode, the other two ends of the T3a are respectively connected with cathodes of high-frequency diodes D3a1 and D3a2, anodes of the D3a1 and D3a2 are connected together and are connected with a filter capacitor C3a to form a power supply positive electrode, the other end of the C3a is connected to the center tap, namely the single-power-supply voltage stabilizing output negative electrode, a Vi n end of a three-end voltage stabilizer VR3a is connected to a C3a positive electrode, a GND end is connected to a C3a negative electrode, and a Vout end outputs single-power-supply stable voltage required by a control circuit; the peripheral rectifying, filtering and voltage stabilizing circuit is characterized in that a secondary center tap of a high-frequency transformer T3C is used for stabilizing voltage and outputting zero potential of a double power supply, the other two ends of the T3C are respectively connected with alternating current input ends of full-bridge rectification of high-frequency diodes D3C1-D3C4, anodes of full-bridge rectification of the D3C1-D3C4 are connected with anodes of a filter capacitor C3C1, cathodes of full-bridge rectification of the D3C1-D3C4 are connected with cathodes of a filter capacitor C3C2, a common point of the C3C1 and the C3C2 is connected with the secondary center tap of the T3C, namely the double power supply is used for stabilizing voltage and outputting zero potential, a Vin end of a three-terminal voltage stabilizer VR3C1 is connected with the anodes of the C3C1, a GND end is connected with a common point of the C3C1 and the C3C2, and the Vout end outputs positive voltage of the double power supply required by the control circuit. The Vi n terminal of the three terminal regulator VR3C2 is connected to the C3C2 negative electrode. The GND end is connected to a common point of C3C1 and C3C2, and the Vout end outputs the negative electrode of the dual-power stable voltage required by the control circuit. The high-frequency transformers T3a-T3n have the characteristics of long magnetic circuit and high impedance, so that the working of each unit is not affected; the structures of the multipath AC/DC converters are all the same
The high-frequency transformers T3a-Tn have the characteristics of long magnetic circuit and high impedance, and the output load change of one AC/DC converter cannot cause power supply faults output by other units, so that the stability and the reliability of the system are ensured; the high-frequency transformers T3a-Tn have the characteristic of low coupling capacitance, so that the interference among loads in each path is greatly reduced; the multipoint distributed AC/AC isolation transformer and the peripheral rectifying, filtering and voltage stabilizing circuit work in a high-frequency state, are convenient to integrate and modularize, can be manufactured into a power module according to the needs, and are convenient to assemble and maintain.
Through the scheme, the electronic equipment control power supply system, in particular to a direct current power supply with a switching power supply structure in vacuum coating electric equipment, has a wide input voltage range, is suitable for the environment with poor power grid quality, is used for nearby installation of cascade multi-output circuit modules in different functional areas in the vacuum coating electric equipment, can realize power supply for multiple loads which are not commonly grounded, and has high flexible distribution characteristics, anti-interference characteristics and reliability.
The control circuit 1 samples the output voltage of the direct current power supply as a feedback signal, and outputs a pulse width adjustment signal through PID (proportion integration differentiation) adjustment to adjust the pulse width of a direct current power supply switching tube so as to ensure that the output end is stabilized at a required voltage value; the control circuit 2 is responsible for generating 180-degree complementary pulse signals, driving two switching tubes of push-pull DC/AC conversion to conduct in turn, realizing high-frequency inversion, isolating by a high-frequency transformer and outputting to a subsequent circuit; the multipoint distributed AC/AC isolation transformers and the peripheral rectifying, filtering and voltage stabilizing circuits are used for outputting a plurality of groups of isolated single power supplies or double power supplies through rectifying, filtering and three-terminal linear voltage stabilization by using a plurality of AC/AC isolation transformers, and providing working power supplies for a control unit of the system.
The input of the power supply system is a switch power supply structure, and the input voltage range is wide; the whole structure is three-stage structure, the front stage voltage stabilization, the middle stage inversion and the rear stage high frequency transformer are isolated and output. The high impedance of a long magnetic circuit of the output high-frequency transformer is high, and the fault cannot cause the protection action of a front stage; the outputs of the multipath rear stages are not mutually influenced, and the circuit reliability is high; the high-frequency switch mode is operated, the efficiency is high, the volume is small, the modularization is convenient, the assembly and the maintenance are convenient, and the high-frequency switch mode can be flexibly distributed according to the requirement; the inter-stage capacitance of the high-frequency transformer is small, and interference is effectively isolated.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The foregoing description is only of a preferred embodiment of the invention, which can be practiced in many other ways than as described herein, so that the invention is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.
Claims (8)
1. A power supply control system of distributed electronic equipment comprises an AC/DC power supply, a push-pull DC/AC high-frequency conversion and corresponding control circuit, a multi-point distributed AC/AC isolation transformer and a peripheral rectifying, filtering and voltage stabilizing circuit which are connected in sequence; the method is characterized in that:
the AC/DC power supply adopts a direct current switch stabilized voltage supply to provide a total power supply for the control system;
the push-pull DC/AC high-frequency conversion and corresponding control circuit realizes the amplitude value 1 of the direct-current stabilized power supply: 1, alternating current conversion;
the multipoint distributed AC/AC isolation transformer and the peripheral rectifying, filtering and voltage stabilizing circuit provide isolated linear voltage stabilizing power for the power utilization unit of the equipment control system.
2. The distributed electronic device power control system of claim 1, wherein: the circuit structure of the AC/DC power supply is as follows: the output voltage feedback circuit is composed of an input filter L1, a full-bridge rectifying circuit D11, a filter capacitor C11, a DC/AC/DC converter, a control circuit 1 and a reference voltage stabilizing tube D14, an isolated optocoupler U1, resistors R12, R13 and R14 which are sequentially connected; the DC/AC/DC converter comprises a single-ended flyback inverter switch tube Q1, a high-frequency flyback transformer T1, a high-frequency rectifier D13 and a filter capacitor C13, wherein a resistor R11 and a capacitor C12 are connected in parallel and then connected with the cathode of a diode D12 to serve as a magnetic reset element of the high-frequency flyback transformer T1 to be connected with the source electrode of the single-ended flyback inverter switch tube Q1, and the drain electrode is connected with the cathode of an alternating-current 220V rectification power supply; the resistors R12, R13 and R14, the reference voltage stabilizing tube D14 and the isolation optocoupler U1 form an isolated output voltage feedback signal.
3. The distributed electronic device power control system of claim 2, wherein: the push-pull DC/AC conversion and corresponding control circuit comprises a push-pull switch inverter circuit: the high-frequency transformer T2 is symmetrically connected with NMOS tubes Q2a and Q2b and is used for controlling the circuit 2; the high-frequency transformer T2 is provided with primary symmetrical double-input windings and secondary single-output windings, and the double-input windings of the high-frequency transformer T2 are connected in series; the center tap of the double-input winding of the high-frequency transformer T2 is connected to the positive electrode of the direct-current power supply, the sources of the NMOS tubes Q2a and Q2b are respectively connected to the two ends of the primary winding of the T2, and the drains of the NMOS tubes Q2a and Q2b are connected together and connected with the negative electrode of the direct-current power supply; the control circuit 2 generates pulse signals for driving the NMOS transistors Q2a and Q2b to conduct alternately and under-voltage closing signals.
4. The distributed electronic device power control system of claim 1, wherein: the multi-point distributed AC/AC isolation transformer and the peripheral rectifying, filtering and voltage stabilizing circuit comprise high-frequency transformers T3a-T3n, and the peripheral rectifying, filtering and voltage stabilizing circuit comprises a half-bridge rectifying circuit consisting of diodes, a filtering capacitor C3a and a full-wave rectifying single-power voltage stabilizing output consisting of a three-terminal voltage stabilizer VR3 a; full-bridge rectification circuit composed of diodes, filter capacitors C3C1 and C3C2, and full-bridge rectification dual-power voltage-stabilizing output composed of three-terminal voltage stabilizer VR3C1 and VR3C 2.
5. The distributed electronic device power control system of claim 4, wherein: the primary of the high-frequency transformer T3a-T3n is connected with the secondary of the push-pull DC/AC converter transformer T2, the high-frequency transformer T3a-T3n has long magnetic circuit high impedance characteristic, and the change of the load does not affect other distribution units.
6. A distributed electronic device power control method, which is based on the distributed electronic device power control system according to claim 3, and is characterized in that:
the control circuit 1 controls the conduction of the single-ended flyback inverter switching tube Q1, because the conduction duty ratio of the Q1 is smaller than 50%, the stored energy of the high-frequency flyback transformer T1 is fed back to the power supply end by the D12, C12 and R11 during the closing period and the magnetic flux of the high-frequency flyback transformer T1 is reset to zero, and meanwhile, the resistors R12, R13, R14, D14 and U1 form an isolated output voltage feedback signal which is input into the control circuit 1 and participates in controlling the conduction time of the single-ended flyback inverter switching tube Q1, so that the output end of the DC/AC/DC converter is automatically stabilized at a designed direct-current voltage value, and the final output voltage is set by changing the voltage division ratio of the R13 and the R14;
the control circuit 2 generates a drive signal with 180 degrees of phase to drive the NMOS transistors Q2a and Q2b to conduct alternately, and the secondary coupling of the high-frequency transformer T2 is symmetrical with the alternating current square wave to provide energy for the multipoint distributed AC/AC isolation transformer and the peripheral rectifying and filtering voltage stabilizing circuit, and the multipoint distributed AC/AC isolation transformer has the protection of under-voltage, over-voltage and over-current output.
7. The vacuum coating power supply is characterized in that: a power control system comprising the distributed electronic device of any of claims 1-5.
8. The vacuum coating power supply is characterized in that: the control of the vacuum coating power supply is realized by adopting the power supply control method of the distributed electronic equipment as claimed in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311651711.0A CN117639521A (en) | 2023-12-05 | 2023-12-05 | Distributed electronic equipment power supply control system, method and vacuum coating power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311651711.0A CN117639521A (en) | 2023-12-05 | 2023-12-05 | Distributed electronic equipment power supply control system, method and vacuum coating power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117639521A true CN117639521A (en) | 2024-03-01 |
Family
ID=90031811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311651711.0A Pending CN117639521A (en) | 2023-12-05 | 2023-12-05 | Distributed electronic equipment power supply control system, method and vacuum coating power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117639521A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674697A (en) * | 2009-09-18 | 2010-03-17 | 陆群 | Miniaturization high power output and separation type driving power supply used by LED bulbs |
| CN201674416U (en) * | 2010-05-18 | 2010-12-15 | 上海天剑电磁技术有限公司 | Electromagnetic induction heating system isolating power circuit |
| CN104753357A (en) * | 2015-04-21 | 2015-07-01 | 中国电子科技集团公司第四十三研究所 | Topology circuit of wide-range input voltage isolation type switch power supply and control method of topology circuit |
| WO2018129825A1 (en) * | 2017-01-11 | 2018-07-19 | 广东百事泰电子商务股份有限公司 | Smart half-bridge sine-wave voltage conversion circuit based on pfc interleaved flyback |
| CN114629356A (en) * | 2022-03-01 | 2022-06-14 | 北京计算机技术及应用研究所 | Missile-borne secondary power supply multi-path output time sequence control method |
-
2023
- 2023-12-05 CN CN202311651711.0A patent/CN117639521A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674697A (en) * | 2009-09-18 | 2010-03-17 | 陆群 | Miniaturization high power output and separation type driving power supply used by LED bulbs |
| CN201674416U (en) * | 2010-05-18 | 2010-12-15 | 上海天剑电磁技术有限公司 | Electromagnetic induction heating system isolating power circuit |
| CN104753357A (en) * | 2015-04-21 | 2015-07-01 | 中国电子科技集团公司第四十三研究所 | Topology circuit of wide-range input voltage isolation type switch power supply and control method of topology circuit |
| WO2018129825A1 (en) * | 2017-01-11 | 2018-07-19 | 广东百事泰电子商务股份有限公司 | Smart half-bridge sine-wave voltage conversion circuit based on pfc interleaved flyback |
| CN114629356A (en) * | 2022-03-01 | 2022-06-14 | 北京计算机技术及应用研究所 | Missile-borne secondary power supply multi-path output time sequence control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5541828A (en) | Multiple output converter with continuous power transfer to an output and with multiple output regulation | |
| US10797605B2 (en) | Resonant switching converter | |
| CN107546959B (en) | Switching power supply, electronic equipment and switching power supply control method | |
| US8300437B2 (en) | Multi-output DC-to-DC conversion apparatus with voltage-stabilizing function | |
| WO2014090044A1 (en) | Voltage regulation method, pre-regulator power supply circuit and system | |
| CN110098740B (en) | Step-down circuit and electronic equipment | |
| CN110504836B (en) | Step-down converter based on STC circuit and resonance Buck circuit | |
| CN101030729A (en) | Method and apparatus for power conversion and regulation | |
| US7495935B2 (en) | DC/AC power converter and controlling method thereof | |
| US20210226544A1 (en) | Detection circuit and switching converter | |
| Jang et al. | A novel active-current-sharing method for interleaved resonant converters | |
| CN109951083B (en) | Multi-output isolation direct-current power supply and overload protection and load regulation compensation circuit | |
| CN214154342U (en) | Magnetic isolation wide-range input voltage stabilizing circuit | |
| CN111628650B (en) | DC/DC circuit, SIMO converter, microsatellite power supply system and working method | |
| TW201737607A (en) | Interleaved boost converter comprising first to second transformers, first to second input capacitors, first to six diodes, and first to second switches and first to third output capacitors | |
| CN221633639U (en) | Distributed electronic equipment power supply control system for vacuum coating power supply | |
| US20200091829A1 (en) | Resonant switching converter | |
| CN117639521A (en) | Distributed electronic equipment power supply control system, method and vacuum coating power supply | |
| CN106253673B (en) | A kind of D. C-D. C voltage converter | |
| CN110729913B (en) | Single-stage high-gain five-switch Boost type inverter | |
| CN112910269A (en) | Secondary side pulse width modulation and synchronous rectification driving circuit and driving method | |
| de Oliveira et al. | Study and implementation of a high gain bidirectional dc-dc converter for photovoltaic on-grid systems | |
| Wang et al. | Input-series and output-parallel connection modular DC-DC converters with interleaved constant duty cycle control strategy | |
| EP1225680A1 (en) | Switched mode power supply | |
| CN111564977A (en) | Flyback switching power supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |