CN106300989B - A kind of gamut can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position and its control method - Google Patents
A kind of gamut can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position and its control method Download PDFInfo
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- CN106300989B CN106300989B CN201610801996.5A CN201610801996A CN106300989B CN 106300989 B CN106300989 B CN 106300989B CN 201610801996 A CN201610801996 A CN 201610801996A CN 106300989 B CN106300989 B CN 106300989B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 19
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- 238000002955 isolation Methods 0.000 claims abstract description 11
- 230000005669 field effect Effects 0.000 claims abstract description 9
- 101150052726 DSP2 gene Proteins 0.000 claims description 28
- 101150115013 DSP1 gene Proteins 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 9
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- 238000013461 design Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000011217 control strategy Methods 0.000 claims description 3
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- 230000003321 amplification Effects 0.000 description 1
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Classifications
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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
- H02M3/22—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
- H02M3/33561—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 having more than one ouput with independent control
-
- 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
- H02M3/33569—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 having several active switching elements
- H02M3/33576—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 having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—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 having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The high direct voltage high frequency switch power and its control method, the high direct voltage high frequency switch power that can be changed the invention discloses a kind of modulated waveform forward position of variable range include three-phase alternating current current rectifying and wave filtering circuit, full bridge inverter, high-frequency isolation transformer, AC-DC module, first microprocessor, driving circuit, PSM power control systems and signal isolation sample circuit；Three-phase alternating-current supply connects full bridge inverter through three phase rectifier filter circuit, full bridge inverter is connected to the primary of 59 identical high-frequency isolation transformers, each high-frequency isolation transformer output connects each AC-DC module, AC-DC module includes that the field-effect tube of series connection output whether is superimposed for controlling DC voltage, and PSM power control systems pass through 59 optical fiber connection 59 AC-DC modules of control；Gamut of the present invention can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position and its control method have many advantages, such as voltage control accuracy is high, small, power density is big, it is easy to maintain, can various modes export, waveform leading edge time is adjustable, controllability is strong.
Description
Technical field
Before modulated waveform being can be changed the present invention relates to high direct voltage high frequency switch power field more particularly to a kind of gamut
Along variable high direct voltage high frequency switch power and its control method.
Background technology
It is generated in some occasions, such as microwave, Insulation test, gas discharge application etc. needs high voltage power supply output voltage energy
A wide range of adjustable, modulated, stable output.
To reach these requirements, there are two types of methods for related device both at home and abroad at present.First method is by entire Power Management Design
At two parts：Prime high voltage power supply platform and modulator；Prime high voltage power supply is boosted using thyristor alternating-current pressure regulation, transformer
And diode rectification scheme.Modulator uses vacuum tetrode, is operated in magnifying state, changes grid voltage to change output electricity
Pressure and waveform leading edge time；Or single supply mutual symmetry power amplifier module is constituted using NPN and PNP transistor, and tie
Equalizer circuit is closed, multiple modules is allowed to be sequentially connected in series design modulator, the error formed using given voltage and feedback voltage
Each module of isolation drive after voltage amplification, to achieve the purpose that change output voltage.Second method is to use Multiple coil work
Frequency power transformer after rectified filtering, through controlling solid switch device entirely, and utilizes pulse step control technology（Pulse step
Modulation, PSM）, realize multimode series-fed technology.
However, the equipment designed using the above method, existing shortcoming are：Whole device volume is big, power density
Low or simulation control, can not achieve full-digital control, and modulating frequency is less than 1kHz；Multiple coil Industrial Frequency Transformer, insulating process
It is required that high, of high cost.Advantage is that multimode series-fed technology is low to the coherence request of switching device.
Invention content
The purpose to be realized of the invention is：Offer one kind is high, small with voltage control accuracy, power density is big,
It is easy to maintain, can various modes modulation output, total digitalization manipulation, the direct current for the advantages that output waveform leading edge time is adjustable is high
Voltage source.
In order to solve the above technical problems, the technical solution adopted in the present invention is：Use high frequency switch power inversion transformation technique
A kind of gamut of design is combined to can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position with PSM technologies, including
Three-phase alternating-current supply, current rectifying and wave filtering circuit, full bridge inverter, high-frequency isolation transformer, AC-DC module（SM）, first micro- place
Manage device（DSP1）, PSM power control systems, output voltage Acquisition Circuit and output current Acquisition Circuit；
It is characterized in that：Three-phase alternating-current supply output connection current rectifying and wave filtering circuit, current rectifying and wave filtering circuit connect full-bridge inverting
Circuit, the output both ends of full bridge inverter（The ends A, the ends B）Output is connected to the primary of 59 identical high-frequency isolation transformers,
The secondary output of each high-frequency isolation transformer connects each AC-DC module（SM）, AC-DC module（SM）Including field-effect tube, optical fiber
Receiving circuit, for receiving the second microprocessor（DSP2）Whether the optical control signal sent out, control DC voltage are superimposed series connection
Output, first AC-DC module（SM1）Rectifying and wave-filtering DC voltage feedback link first microprocessor（DSP1）, first is micro-
Processor（DSP1）Acquire the pressure-keeping functions that this DC voltage control prime full-bridge inverter realizes 59 AC-DC modules；PSM
Power control system includes the second microprocessor（DSP2）, optical fiber, ethernet module, router etc., the second microprocessor
（DSP2）Pass through 59 optical fiber control 59 AC-DC modules of connection（SM）, the second microprocessor（DSP2）External serial ports successively
Connect ethernet module, router and upper PC machine.
The variable high direct voltage high frequency switch power in modulated waveform forward position is can be changed as above-mentioned gamut furtherly
Bright, control is isolated by optical fiber (S1-S58) with shutdown in the field-effect tube conducting in preceding 58 AC-DC modules；Described 59th
Grade AC-DC module（SM59）In current rectifying and wave filtering circuit behind use Buck reduction voltage circuits, and directly by the second microprocessor
（DSP2）Output high-frequency PWM signal is controlled it by optical fiber.
The variable high direct voltage high frequency switch power in modulated waveform forward position is can be changed as above-mentioned gamut furtherly
Bright, in order to which Guarantee control system can carry out quick failure response, PSM power control systems are also associated with long-range middle control failure
Detecting system, data collecting system and communication system control fault detection system in long-range and pass through the second microprocessor of optical fiber pair
（DSP2）Switching value monitoring is carried out, data collecting system carries out data acquisition to input and output voltage, electric current, and communication system is simultaneously
Data communication is carried out with the numerous signals of control state etc. in touch screen, load system.
The variable high direct voltage high frequency switch power in modulated waveform forward position is can be changed as above-mentioned gamut furtherly
It is bright, due to the second microprocessor（DSP2）I/O port limited amount, and want delays time to control between each IO, 59 IO can not be passed through
Mouth is one-to-one to directly control 59 modules, and optimized, preceding 30 modules are divided into three groups, every group of 10 modules, respectively by 3 I/O ports
Control, the 31st grade of module are independently controlled by 29 IO respectively to the 59th module, and 59 module controls just only need 32 IO
Mouthful.
The variable high direct voltage high frequency switch power in modulated waveform forward position is can be changed as above-mentioned gamut furtherly
It is bright, the first microprocessor（DSP1）With the second microprocessor（DSP2）Chip TMS 320 F 2812 is all made of as master control,
In, first microprocessor（DSP1）It controls prime full-bridge inverter and realizes constant pressure and the monitoring of input direct-current busbar DC voltage, the
Two microprocessors（DSP2）Realize the functions such as stabilization and the modulation output of total output voltage of 59 modules of rear class.
The variable high direct voltage high frequency switch power in modulated waveform forward position is can be changed as above-mentioned gamut furtherly
Bright, control method is：1) six voltage values be put into control output voltage array Voltage [6], be used as reference voltage, six
A level time is put into the output time array Time [6] of a control current level, in locally control or remote control, leads to
It crosses and changes this 12 numerical value and can change the waveform of current output voltage；2) output voltage carries out dividing it by divider resistance
Afterwards, it is compared with reference voltage (being taken out from array Voltage [6]), the error voltage relatively generated later and each mould
The reference voltage of block（The present invention takes 600V）It is divided by, and carries out remainder and take quotient's operation, quotient determines the distribution side of output module
Then formula opens corresponding module；Remainder is to determine the 59th module of control（SM59）Pwm signal duty ratio.
The variable high direct voltage high frequency switch power control method in modulated waveform forward position is can be changed as above-mentioned gamut
It further illustrates, in order to meet the fast response time of system, by establishing output module and time control table and I/O port
Between relationship, the control time output valve of the current ports DSP2 is inquired, to control the conducting of corresponding module and shutdown；In reality
Using 32 pins in Port A, this four ports B, E, F in TMS320F2812 chips in the application of border, wherein the 59th mould
Block uses a PWM pin in PORTA.
The variable high direct voltage high frequency switch power control method in modulated waveform forward position is can be changed as above-mentioned gamut
Advanced optimize explanation, due to each module of PSM power supplys band carry with without load state under rapid conversion, according to conventional successive control
It will produce when adjacent switching between the module that system, ten modules of the same I/O port control and 9 independent I/O ports control prodigious
Spike.This pulse spike is highly detrimental to the stabilization and electromagnetic compatibility of entire power-supply system；In order to change this situation,
It is using Optimal Control Strategy：As output voltage V0 < 12kV, corresponding module in 31-50 grades is opened；As 12kV < V0 <
When 18kV, corresponding module in 1-10 grades of modules and 31-50 grades is opened；As 18kV < V0 < 24kV, 1-20 grades are opened, and
Corresponding module in 31-50 grades；As output voltage 24kv < V0, corresponding module in 1-30 grades and 31-59 grades is opened（Its
Middle V0 is output voltage）.
The variable high direct voltage high frequency switch power control method in modulated waveform forward position is can be changed as above-mentioned gamut
Explanation is advanced optimized, output voltage waveforms can be there are three types of pattern：Single pulse mode, multi-pulse modulation pattern and six level are pre-
Set pattern.Single pulse mode refers to one pulse of output, and time span is arbitrary；Multi-pulse modulation pattern refer to output duty cycle 0-1 it
Between and the changeable modulation waveform of frequency, this item purpose modulating frequency be not less than 10kHz.Six level prepatterns refer to a wave
The period of shape is divided into six stages, and the time in different stages and voltage swing are easy setting, and time span is unlimited.
Operation principle：Gamut of the present invention can be changed the variable high direct voltage HF switch electricity in modulated waveform forward position
Source, when work, three-phase alternating current passes through current rectifying and wave filtering circuit rectifying and wave-filtering, becomes frequency about tens using full bridge inverter
The high-frequency ac voltage of kHz, amplitude about 540V, this high-frequency ac voltage, which is exported by A, B point-to-point transmission to 59 identical high frequencies, to be become
The primary of depressor, boosted, rectifying and wave-filtering obtain DC voltage, i.e. 59 primary parallel connections later, their secondary warp
AC-DC module（SM）Afterwards, whether series connection output is superimposed by each mould field-effect tube control DC voltage in the block.
All due to 59 modules, so the output voltage of each module is all by feeding back first module（SM1）It is whole
Flow filtered DC voltage（Vdc）To realize that voltage close loop stabilization, each module voltage are stablized in 600V.Preceding 58 moulds are in the block
Field-effect tube is connected to be controlled with shutdown, is isolated by optical fiber (S1-S58) and is controlled；If corresponding module receives optical signal, should
Module is just added to regard to output voltage on total output voltage, so as to realize that output voltage is that the integral multiple amplitude of 600V changes
Become and modulation exports, subsequent parallel diode is in blocking state in module at this time；If corresponding module is not received by
Fiber-optic signal, diode current flow and in being connected in output loop.The module of different location due to modulation and in unloaded and
With the conversion between load state, there is the variation of spiking problems and amplitude in the voltage actually exported ahead of the curve, in order to solve this
A problem, in the 59th grade of module（SM59）On, Buck reduction voltage circuits are used behind rectifying and wave-filtering, directly by the second microprocessor
（DSP2）Output high-frequency PWM signal is controlled it by optical fiber, the output voltage of the module can 0 to adjustable between 600V,
Meet the Con trolling index that output voltage degree of regulation is less than 100V.
Advantageous effect：Gamut of the present invention can be changed the variable high direct voltage HF switch electricity in modulated waveform forward position
Source and its control method have the advantages that voltage control accuracy is high, small, easy to maintain, controllability is strong, meanwhile, it is exportable
Single pulse mode, multi-pulse modulation pattern and six level prepatterns.
Description of the drawings
Fig. 1 is the overall construction drawing of the present invention；
Fig. 2 is PSM power control systems structure chart of the present invention；
Fig. 3 flow charts in order to control；
Fig. 4 is forward position control flow chart；
Fig. 5 is forward position control effect oscillogram；
Fig. 6 is Three models output waveform diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention and operation principle, technical solution in the embodiment of the present invention into
Row clearly and completely describes；Described in embodiment is only a part of the embodiment of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.This example is applied particularly to anode high voltage power for electronic cyclotron
In, output parameter 35kV/200mA.
A kind of gamut can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position, and (its overall structure is such as
Shown in Fig. 1）, including three-phase alternating-current supply, current rectifying and wave filtering circuit, full bridge inverter, high frequency transformer, AC-DC module（SM）,
First microprocessor（DSP1）With PSM power control systems；Three-phase alternating-current supply output connection current rectifying and wave filtering circuit, rectifying and wave-filtering
Circuit connects full bridge inverter, the output both ends of full bridge inverter（The ends A, the ends B）Output is connected to 59 identical high frequencies
The secondary output of the primary of transformer, each high frequency transformer connects each AC-DC module（SM）, AC-DC module（SM）Including field is imitated
Ying Guan, for controlling whether DC voltage is superimposed series connection output, first AC-DC module（SM1）The first microprocessor of feedback link
Device（DSP1）, first microprocessor DSP1 control prime full-bridge inverter realization constant pressures；PSM power control systems（Such as Fig. 2 institutes
Show）Including the second microprocessor（DSP2）, optical fiber, ethernet module, router and PC machine, the second microprocessor（DSP2）Pass through
59 optical fiber control 59 AC-DC modules of connection（SM）, the second microprocessor（DSP2）External serial ports be sequentially connected Ethernet
Module, router and PC machine；In preceding 58 AC-DC modules field-effect tube conducting with shutdown by optical fiber (S1-S58) every
From control；The 59th grade of AC-DC module（SM59）In current rectifying and wave filtering circuit behind use Buck reduction voltage circuits, and directly by
Second microprocessor（DSP2）Output high-frequency PWM signal is controlled it by optical fiber；In preceding 58 AC-DC modules
Field-effect tube is connected is isolated control with shutdown by optical fiber (S1-S58)；The 59th grade of AC-DC module（SM59）In rectification
Buck reduction voltage circuits are used behind filter circuit, and directly by the second microprocessor（DSP2）Output high-frequency PWM signal passes through light
Fibre controls it；The first microprocessor（DSP1）With the second microprocessor（DSP2）It is all made of chip
TMS320F2812 is as master control, wherein first microprocessor（DSP1）It controls prime full-bridge inverter and realizes constant pressure, second is micro-
Processor（DSP2）Realize the functions such as the voltage stabilizing and modulation output of 59 modules of rear class.
As the further explanation of the above embodiment, in order to which Guarantee control system can carry out quick failure response,
PSM power control systems are also associated with long-range middle control fault detection system, data collecting system and communication system, long-range middle control event
Barrier detecting system passes through the second microprocessor of optical fiber pair（DSP2）Switching value monitoring is carried out, data collecting system is to inputting and exporting
Voltage, electric current carry out data acquisition, and communication system simultaneously carries out data communication with numerous signals such as touch screen, middle control state.
As the further explanation of the above embodiment, due to the second microprocessor（DSP2）I/O port limited amount, and
Delays time to control is wanted between each IO, 59 modules, optimized, preceding 30 modules can not be directly controlled by the way that 59 I/O ports are one-to-one
It is divided into three groups, every group of 10 modules are controlled by 3 I/O ports respectively, and the 31st grade of module is to the 59th module respectively by 29 IO independences
It is controlled, 59 module controls just only need 32 I/O ports.
Above-mentioned gamut can be changed the control method of the variable high direct voltage high frequency switch power in modulated waveform forward position, such as
Under：
1) six voltage values are put into control output voltage array Voltage [6], are used as reference voltage, when six level
Between be put into the output time array Time [6] of a control current level, in locally control or when remote control, by changing this
12 numerical value can change the waveform of current output voltage；
2) it after output voltage is divided by divider resistance, is compared with reference voltage, reference voltage here
It is taken out from the array Voltage [6] being noted above, the error voltage relatively generated later is divided by with 600, and carries out remainder
With take quotient's operation, quotient determines the distribution mode of output module, then opens corresponding module.Remainder is to determine control the 59th
Module（SM59）Pwm signal duty ratio.
Corresponding to above-mentioned control method, control flow chart is as shown in Figure 3.
It can be changed the control method of the variable high direct voltage high frequency switch power in modulated waveform forward position as above-mentioned gamut
Further explanation, due to each module of PSM power supplys band carry with without load state under rapid conversion, controlled according to conventional successive,
Between ten modules of the same I/O port control and the module of 9 independent I/O port control prodigious spike is will produce when adjacent switching
Pulse.This pulse spike is highly detrimental to the stabilization and electromagnetic compatibility of entire power-supply system；In order to change this situation, use
Optimal Control Strategy is：As output voltage V0 < 12kv, corresponding module in 31-50 grades is opened；As 12kv < V0 < 18kv
When, open corresponding module in 1-10 grades of modules and 31-50 grades；As 18kv < V0 < 24kv, 1-20 grades and 31-50 are opened
Corresponding module in grade；As output voltage 24kv < V0, corresponding module in 1-30 grades and 31-59 grades is opened（Wherein V0 is
Output voltage）.
It can be changed the control method of the variable high direct voltage high frequency switch power in modulated waveform forward position as above-mentioned gamut
Further explanation, in order to meet the fast response time of system, by establishing output module and time control table and the ends IO
Relationship between mouthful, inquires the control time output valve of the current ports DSP, to control corresponding module conducting and shutdown.?
Port A in TMS320F2812 chips, 32 pins in this four ports B, E, F, module 59 have been used to make in practical application
With a PWM pin in PORTA.
The variable high direct voltage high frequency switch power control method in modulated waveform forward position is can be changed as above-mentioned gamut
It further illustrates, in order to meet the particular/special requirement of different loads system, prevents too fast voltage change from causing inside gyrotron
Electric arc adds waveform forward position control function (as shown in Figure 4) in control flow, wherein delay time range is about that 0 μ s are arrived
3ms, maximum stepping are 100 μ s.The control method can not only meet requirement of the different system to Electro Magnetic Compatibility, while also can
Whether for having individual module to damage in detecting system, forward position controls actual test effect oscillogram (as shown in Figure 5),
One shares 30 steps in Fig. 5, and three, left side step represents 30 grades of modules of output, and 27, the right step represents 27 grades of output moulds
Block, so one shares 57 module voltage outputs.If the number of modules and the step of output opened be not corresponding, mean that corresponding
Module damage.
The variable high direct voltage high frequency switch power control method in modulated waveform forward position is can be changed as above-mentioned gamut
Explanation is advanced optimized, output voltage waveforms can be there are three types of pattern (as shown in Figure 6)：Single pulse mode, multi-pulse modulation mould
Formula and six level prepatterns.Single pulse mode refers to one pulse of output, and time span is arbitrary；Multi-pulse modulation pattern refers to output
Between duty ratio 0-1 and the changeable modulation waveform of frequency, this item purpose modulating frequency are not less than 10kHz.The preset mould of six level
Formula refers to is divided into six stages by the period of a waveform, and the time in different stages and voltage swing are easy setting, time span
It is unlimited.
Claims (8)
1. a kind of gamut can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position, it is based on high frequency switch power
Technology and PSM Technology designs, including three-phase alternating-current supply, current rectifying and wave filtering circuit, full bridge inverter, high-frequency isolation transformer,
AC-DC module（SM）, first microprocessor（DSP1）With PSM power control systems, it is characterised in that：Three-phase alternating-current supply exports
Current rectifying and wave filtering circuit is connected, current rectifying and wave filtering circuit connects full bridge inverter, the output both ends of full bridge inverter（The ends A, the ends B）
Output is connected to the primary of 59 identical high-frequency isolation transformers, and the secondary output of each high-frequency isolation transformer connects each AC-
DC modules（SM）, AC-DC module（SM）Including field-effect tube, series connection output whether is superimposed for controlling DC voltage, first
AC-DC module（SM1）Feedback link first microprocessor（DSP1）, first microprocessor（DSP1）Control prime full-bridge inverting electricity
Realize constant pressure in road；PSM power control systems include the second microprocessor（DSP2）, optical fiber, ethernet module, router and PC
Machine, the second microprocessor（DSP2）Pass through 59 optical fiber control 59 AC-DC modules of connection（SM）, the second microprocessor（DSP2）
External serial ports be sequentially connected ethernet module, router and PC machine, the conducting of field-effect tube in preceding 58 AC-DC modules
Control, the 59th AC-DC module are isolated by optical fiber (S1-S58) with shutdown（SM59）In current rectifying and wave filtering circuit behind use
Buck reduction voltage circuits, and directly by the second microprocessor（DSP2）Output high-frequency PWM signal is controlled it by optical fiber.
2. gamut according to claim 1 can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position,
It is characterized in that：The first microprocessor（DSP1）With the second microprocessor（DSP2）It is all made of chip TMS 320 F 2812 work
For master control, wherein first microprocessor（DSP1）Control prime full bridge inverter realize constant pressure, DC bus-bar voltage is under-voltage and
Overvoltage monitoring, the second microprocessor（DSP2）Realize the voltage stabilizing, modulation output and communication function of 59 AC-DC modules of rear class.
3. gamut according to claim 1 can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position,
It is characterized in that：Second microprocessor（DSP2）Pin resource it is limited, therefore preceding 30 AC-DC modules are divided into three groups,
Every group of 10 AC-DC modules are controlled by 3 I/O ports respectively, and the 31st AC-DC module is to the 59th AC-DC module respectively by 29
A IO is independently controlled.
4. a kind of gamut can be changed the control method of the variable high direct voltage high frequency switch power in modulated waveform forward position, feature
It is：The variable high direct voltage in modulated waveform forward position is can be changed using the gamut as described in any one of claims 1 to 3
High frequency switch power, and method control as follows：1) six voltage values are put into control high direct voltage high frequency switch power output electricity
Array Voltage [6] is pressed, reference voltage is used as, six level times are put into the output time array of a control current level
Time [6] can change current high direct voltage high frequency by changing this 12 numerical value and open in locally control or when remote control
Close the waveform of electric power output voltage；2) after high direct voltage high frequency switch power output voltage is divided by divider resistance,
It is compared with the reference voltage taken out from array Voltage [6], the error voltage and AC-DC module relatively generated later
Reference voltage is divided by, and the reference voltage takes 600V, and carries out remainder and take quotient's operation, and quotient determines the distribution of AC-DC module
Then mode opens corresponding AC-DC module；Remainder is to determine the 59th AC-DC module of control（SM59）Pwm signal account for
Empty ratio, its output voltage can between 0-600V continuous variable.
5. gamut according to claim 4 can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position
Control method, it is characterised in that：For during preventing modulation from exporting, the peak voltage that when different AC-DC modules switching generates, therefore make
It is with Optimal Control Strategy：As high direct voltage high frequency switch power output voltage V0 < 12kV, open corresponding in 31-50
AC-DC module；As 12kV < V0 < 18kV, corresponding AC-DC module in 1-10 and 31-50 is opened；When
When 18kV < V0 < 24kV, corresponding AC-DC module in 1-20 and 31-50 is opened；When high direct voltage HF switch
When electric power output voltage V0 > 24kV, corresponding AC-DC module in 1-30 and 31-58 is opened, the V0 is direct current
High voltagehigh frequency switch power source output voltage.
6. gamut according to claim 5 can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position
Control method, it is characterised in that：In order to meet the fast response time of system, by establishing AC-DC module and time control
Relationship between table and I/O port inquires current second microprocessor（DSP2）The control time output valve of port, to control
Make the conducting of corresponding AC-DC module and shutdown, use in practical applications Port A in TMS320F2812 chips, B, E, F this four
32 pins in a port, the 59th AC-DC module use a PWM pin in Port A.
7. gamut according to claim 6 can be changed the control of the variable high direct voltage high frequency switch power in modulated waveform forward position
Method, it is characterised in that：In order to meet the particular/special requirement of different loads system, prevent too fast voltage change from causing transition,
Waveform forward position control function is added in control flow, when 59 AC-DC modules export, high direct voltage HF switch can be made electric
The leading edge time delay time range of the output waveform of source output voltage is about 0 μ s to 3ms, opens and prolongs between adjacent AC-DC module
Maximum stepping late is 100 μ s, which can be provided for whether having single AC-DC module to damage in detecting system, and direct current is high
A step in the output waveform of high frequency switch power output voltage is pressed to represent an AC-DC module output voltage for controlling signal
Size, one shares 59 AC-DC module voltage outputs, if the AC-DC module number and the step of output opened be not corresponding, just
Indicate corresponding AC-DC module damage.
8. gamut according to claim 4 can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position
Control method, it is characterised in that：There are three types of patterns to export for the output voltage waveforms of high direct voltage high frequency switch power, simple venation punch die
Formula, modulating mode and preset six level mode.
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| CN110829793A (en) * | 2019-09-20 | 2020-02-21 | 合肥雷科电子科技有限公司 | High-voltage MPM modular modulation power supply for EIK klystron |
| CN111509991B (en) * | 2020-04-21 | 2021-06-11 | 合肥一煊检测技术有限公司 | Programmable arbitrary wave test power supply structure and control system and method thereof |
| CN112532082B (en) * | 2020-11-26 | 2021-11-16 | 核工业西南物理研究院 | High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply |
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