CN108696156A - A kind of control method and its device of supply convertor - Google Patents
A kind of control method and its device of supply convertor Download PDFInfo
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- CN108696156A CN108696156A CN201810851728.3A CN201810851728A CN108696156A CN 108696156 A CN108696156 A CN 108696156A CN 201810851728 A CN201810851728 A CN 201810851728A CN 108696156 A CN108696156 A CN 108696156A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 239000003990 capacitor Substances 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
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
- 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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
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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
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
-
- 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
Abstract
The invention discloses a kind of control method of supply convertor and its devices, it includes a main circuit, the main circuit is made of ac/dc translation circuit and DC/DC conversion circuit, the DC/DC conversion circuit adjusts output voltage by opening for switching tube with shutdown, in the DC/DC conversion circuit controller, by increasing a busbar voltage ring and first arithmetic device in its voltage loop, when so that its controller being switched to the busbar voltage ring control, supply convertor remains to keep certain power output;The present invention is in the DC/DC conversion circuit controller, by increasing a busbar voltage ring and first arithmetic device in its voltage loop so that when controller is switched to the busbar voltage ring control, supply convertor remains to keep certain power output.
Description
Technical field
The present invention relates to power electronic product field, more particularly to the control method and its device of a kind of supply convertor.
Background technology
In communication power supply AC/DC modules, main circuit is usually by prime pfc circuit and rear class isolated form DC/DC circuit groups
At bus capacitor in parallel among two-stage circuit.Due to the requirement of module retention time, bus capacitor would generally use large capacity
Electrolytic capacitor, but due to the limitation of module volume and cost, bus capacitor total capacity is also limited.Usual PFC busbar voltage annulus
Width is low, and dynamic property is simultaneously bad, and when Larger Dynamic saltus step occurs in load, bus capacitor voltage meeting wide fluctuations are easy to cause
Busbar voltage overvoltage/undervoltage is protected, and in order to handle input voltage saltus step and output loading saltus step, outer voltage is usually in this load
The measures such as similar nonlinear Control are added when saltus step, just can guarantee that PFC busbar voltages do not occur overvoltage/undervoltage protection.But when rear class is negative
Carry and further increase, beyond when maximum load capacity requires under input voltage at this time, busbar voltage can further be dragged down until
PFC shutdown that busbar is under-voltage, does not work so as to cause entire module.
When load is battery, the module in system would generally be configured to maximum output ability and charge the battery, if
When the case where abnormal reduction occurs in input voltage at this time, module load capacity reduces, loaded at this time still according to maximum before
If current-limiting points charge the battery, module can be supported the dead shutdown of drawing.Usually at this time cell load wants to reduce load
Output current continues to charge, and voltage to be entered restores normal, and module can continue to charge according to maximum current-limiting points.
Invention content
Technical problem to be solved by the invention is to provide a kind of control method of supply convertor and its device, Neng Gouyou
Effect solves deficiency in the prior art.
The present invention is achieved through the following technical solutions:A kind of control method of supply convertor a comprising master
Circuit, the main circuit are made of ac/dc translation circuit and DC/DC conversion circuit, the DC/DC conversion circuit
Output voltage is adjusted with shutdown by opening for switching tube, in the DC/DC conversion circuit controller, by it
Increase a busbar voltage ring and first arithmetic device in voltage loop so that its controller is switched to the busbar voltage ring control
When, supply convertor remains to keep certain power output;
Switching tube is controlled by drive signal through overdrive circuit in DC/DC conversion circuit, obtains the driving
Signal specifically comprises the following steps:
Busbar voltage setting value and busbar voltage sampled value generate controlling value V1, the controlling value after second arithmetic device
V1 generates controlling value V2 by the first negative-feedback compensated regulator;Output voltage setting value passes through second with output voltage sampled value
Controlling value V3, the controlling value V3 are generated after arithmetic unit generates controlling value V4, the control by the second negative-feedback compensated regulator
The value V2 processed and controlling value V4 generates controlling value V5, the controlling value V5 by first arithmetic device and is generated by signal generator
The drive signal.
The operation of the first arithmetic device is minimizing operation, the output valve of first arithmetic device as a preferred technical solution,
For the minimum value in two input values of the first arithmetic device;
The operation of the second arithmetic device is to seek difference operation, and the output valve of the second arithmetic device is the second arithmetic device
The difference of two input values;
The busbar voltage setting value is less than busbar voltage minimum value when supply convertor steady operation.
The controlling value V5 is generated by second arithmetic device with output current sampled value and is controlled as a preferred technical solution,
Value V6, the controlling value V6 generate controlling value V7, the controlling value V7 by third negative-feedback compensated regulator and are given birth to by signal
It grows up to be a useful person and generates the drive signal.
Output voltage sampled value is generated by third arithmetic unit with output current sampled value and is controlled as a preferred technical solution,
Value V8 processed, the controlling value V5 and the controlling value V8 generate the controlling value V6 by second arithmetic device.
The operation of the third arithmetic unit is multiplication operation, i.e., the output valve of the described third arithmetic unit is the third operation
The product value of two input values of device.
Frequency-variable Modulation, pulsewidth may be used in switching tube in the DC/DC conversion circuit as a preferred technical solution,
The control modes such as modulation and phase shifting control, the corresponding drive signal are respectively switch frequency signal, pulse duty factor letter
Number and different switching tube duty ratios phase shift angle signal.
A kind of supply convertor device, including ac/dc translation circuit, bus capacitor, DC/DC conversion circuit,
First sample circuit, the second sample circuit, driving circuit and controller circuitry, the input terminal connection of the supply convertor device
The input terminal of the ac/dc translation circuit, the output end of the ac/dc translation circuit by bus capacitor with
The input terminal of the DC/DC conversion circuit is connected in parallel, and the output end of the DC/DC conversion circuit connects institute
Supply convertor device output end is stated, bus capacitor voltage passes through the first sample circuit generatrix voltage sample value, defeated
Go out voltage and obtains output voltage sampled value, the busbar voltage sampled value and the output voltage by second sample circuit
Sampled value is sent in the controller circuitry, and the controller closed-loop control generates drive signal and controlled through overdrive circuit
Switching tube opening and turning off in the DC to DC converter.
Output current obtains output current sampled value by the third sample circuit as a preferred technical solution,
In the controller circuitry, the controlling value V5 generates controlling value with the output current sampled value by second arithmetic device
V6, the controlling value V6 generate controlling value V7, the controlling value V7 by third negative-feedback compensated regulator and are generated by signal
Device generates drive signal, and the drive signal is controlled by the driving circuit to be switched in the DC/DC conversion circuit
Pipe being opened and turning off.
As a preferred technical solution, in the controller circuitry, the output voltage sampled value and the output
Current sampling data generates controlling value V8, the controlling value V5 and the controlling value V8 by third arithmetic unit and passes through second arithmetic device
Generate the controlling value V6.
The operation of the third arithmetic unit is multiplication operation, i.e., the output valve of the described third arithmetic unit is the third operation
The product value of two input values of device.
The controller is digital signal processor as a preferred technical solution,.
As a preferred technical solution, when the DC/DC conversion circuit be the translation circuit with transformer isolation, and
When the ground level of the controller is secondary side ground level, primary current generates primary current by the third sample circuit and samples
The primary current sampled value is converted to the output current sampled value by value in the controller circuitry.
It is and described as a preferred technical solution, when DC/DC conversion circuit is the translation circuit with transformer isolation
When the ground level of controller is secondary side ground level, the first sample circuit is isolation sample circuit;When DC/DC conversion electricity
Road is the translation circuit with transformer isolation, and when the ground level of the controller is primary side ground level, the second sample circuit, the
Three sample circuits are isolation sample circuit, and driving circuit is isolated drive circuit.
The beneficial effects of the invention are as follows:1) when loading demand is more than the maximum output of input voltage condition lower module at this moment
When ability, module voltage outer shroud is switched to newly-increased busbar voltage closed-loop control so that busbar voltage steady operation is at another
Stable state bus voltage value, busbar voltage minimum value when busbar voltage is less than steady operation at this time, busbar electricity when between steady operation
It presses between minimum value and busbar under-voltage value, can ensure that rear class DC/DC circuits remain to keep certain power output, extend electricity
Source converter output services range.
2) when loading dynamic change, it is possible to reduce the nonlinear operation of the parts prime PFC, rear class control loop being capable of bases
The practical load capacity of busbar takes over seamlessly between two loops, to ensure that busbar voltage is stablized.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is first schematic diagram of the method for the present invention;
Fig. 2 is second schematic diagram of the method for the present invention;
Fig. 3 is the third schematic diagram of the method for the present invention;
Fig. 4 is the first embodiment circuit diagram of the method for the present invention device;
Fig. 5 is the second embodiment circuit diagram of the method for the present invention device;
Fig. 6 is the 3rd embodiment circuit diagram of the method for the present invention device.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
Embodiment 1:
As Figure 1-Figure 4, supply convertor by controller 1, ac/dc translation circuit 2, bus capacitor 3, direct current/
The compositions such as DC transfer circuit 4, the first sample circuit, the second sample circuit, driving circuit, wherein the controller 1 is number
Word signal processor (DSP).
The input terminal of the input terminal connection ac/dc translation circuit 2 of supply convertor device, the friendship
The output end of stream/DC transfer circuit connects by the way that bus capacitor 3 is in parallel with the input terminal of DC/DC conversion circuit 4
It connects, the output end of DC/DC conversion circuit 4 connects the supply convertor device output end, and bus capacitor voltage passes through institute
The first sample circuit generatrix voltage sample value is stated, output voltage obtains output voltage by second sample circuit and samples
Value, the busbar voltage sampled value are sent to the AD mouths of the controller 1,1 closed loop of controller with the output voltage sampled value
Control generates drive signal and controls opening and turning off for switching tube in the DC to DC converter 4 through overdrive circuit.
In 1 circuit of controller, busbar voltage setting value and busbar voltage sampled value generate control after second arithmetic device 12
Value V1 processed, the controlling value V1 generate controlling value V2 by the first negative-feedback compensated regulator 13;Output voltage setting value with it is defeated
Go out voltage sample value and generates controlling value V3, the controlling value V3 after second arithmetic device by the second negative-feedback compensated regulator
14 generate controlling value V4, the controlling value V2 and the controlling value V4 generates controlling value V5, the control by first arithmetic device 11
Value V5 processed generates drive signal by signal generator 15, and it is described straight to control that the drive signal is sent to the driving circuit
Switching tube opening and turning off in stream/DC transfer circuit.
The operation of first arithmetic device 11 is minimizing operation, i.e., the output valve of the first arithmetic device 11 is first operation
Minimum value in two input values of device 11.
The operation of second arithmetic device 12 is to seek difference operation, i.e. the output valve of the second arithmetic device 12 is second operation
The difference of 12 two input values of device.
Busbar voltage given value is less than the busbar voltage minimum value when supply convertor steady operation.
Embodiment 2:
Fig. 5 gives the first embodiment circuit diagram of supply convertor control method using the present invention and its device.Institute
The supply convertor stated is by controller 1, ac/dc translation circuit 2, bus capacitor 3, DC/DC conversion circuit 4, first
The compositions such as sample circuit, the second sample circuit, third sample circuit, driving circuit, wherein the controller 1 is digital signal
Processor (DSP).
The input terminal of the input terminal connection ac/dc translation circuit 2 of supply convertor device, the friendship
The output end of stream/DC transfer circuit connects by the way that bus capacitor 3 is in parallel with the input terminal of DC/DC conversion circuit 4
It connects, the output end of the DC/DC conversion circuit 4 connects the supply convertor device output end, bus capacitor voltage
By the first sample circuit generatrix voltage sample value, output voltage obtains output electricity by second sample circuit
Sampled value, the busbar voltage sampled value is pressed to be sent to the AD mouths of the controller 1, the control with the output voltage sampled value
1 closed-loop control of device processed generates drive signal and controls opening for switching tube in the DC to DC converter 4 through overdrive circuit
Logical and shutdown.
In 1 circuit of controller, busbar voltage setting value and busbar voltage sampled value generate after second arithmetic device 12
Controlling value V1, the controlling value V1 generate controlling value V2 by the first negative-feedback compensated regulator 13;Output voltage setting value with
Output voltage sampled value generates controlling value V3 after second arithmetic device, and controlling value V3 passes through the second negative-feedback compensated regulator 14
It generates controlling value V4, the controlling value V2 and controlling value V4 and generates controlling value V5, the controlling value V5 by first arithmetic device 11
Controlling value V6, the controlling value V6 are generated with output current sampled value by second arithmetic device 12 to adjust by third negative-feedback compensation
It saves device 16 and generates controlling value V7, the controlling value V7 by the generation drive signal of signal generator 17, the drive signal passes through
The driving circuit controls opening and turning off for switching tube in the DC/DC conversion circuit.
The operation of first arithmetic device 11 is minimizing operation, i.e., the output valve of the first arithmetic device 11 is first operation
Minimum value in two input values of device 11.
The operation of second arithmetic device 12 is to seek difference operation, i.e. the output valve of the second arithmetic device 12 is second operation
The difference of 12 two input values of device.
Busbar voltage given value is less than the busbar voltage minimum value when supply convertor steady operation.
Embodiment 3:
Fig. 6 gives the first embodiment circuit diagram of supply convertor control method using the present invention and its device.Institute
The supply convertor stated is by controller 1, ac/dc translation circuit 2, bus capacitor 3, DC/DC conversion circuit 4, first
The compositions such as sample circuit, the second sample circuit, third sample circuit, driving circuit, wherein the controller 1 is digital signal
Processor (DSP).
The input terminal of the input terminal connection ac/dc translation circuit 2 of the supply convertor device, it is described
The output end of ac/dc translation circuit is in parallel with the input terminal of DC/DC conversion circuit 4 by bus capacitor 3
The output end of connection, the DC/DC conversion circuit 4 connects the supply convertor device output end, bus capacitor electricity
Pressure passes through the first sample circuit generatrix voltage sample value, and output voltage is exported by second sample circuit
Voltage sample value, the busbar voltage sampled value is sent to the AD mouths of the controller 1 with the output voltage sampled value, described
1 closed-loop control of controller generates drive signal and controls switching tube in the DC to DC converter 4 through overdrive circuit
It opens and turns off.
In 1 circuit of controller, busbar voltage setting value and busbar voltage sampled value pass through second arithmetic device 12
Controlling value V1, the controlling value V1 are generated afterwards generates controlling value V2 by the first negative-feedback compensated regulator 13;Output voltage is set
Definite value generates controlling value V3, the controlling value V3 with output voltage sampled value after second arithmetic device and is mended by the second negative-feedback
It repays adjuster 14 and generates controlling value V4, the controlling value V2 and the controlling value V4 by the generation controlling value of first arithmetic device 11
V5, output voltage sampled value and output current sampled value by third arithmetic unit 17 generate controlling value V8, the controlling value V5 with
The controlling value V8 generates the controlling value V6 by second arithmetic device, and the controlling value V6 passes through third negative-feedback compensation adjustment
Device 16 generates controlling value V7, the controlling value V7 and generates drive signal by signal generator 15, and the drive signal passes through institute
Driving circuit is stated to control opening and turning off for switching tube in the DC/DC conversion circuit.
The operation of first arithmetic device 11 is minimizing operation, i.e., the output valve of the first arithmetic device 11 is first operation
Minimum value in two input values of device 11.
The operation of second arithmetic device 12 is to seek difference operation, i.e. the output valve of the second arithmetic device 12 is second operation
The difference of 12 two input values of device.
The operation of third arithmetic unit is multiplication operation, i.e., the output valve of the described third arithmetic unit is the third arithmetic unit two
The product value of a input value.
Busbar voltage given value is less than the busbar voltage minimum value when supply convertor steady operation.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (11)
1. a kind of control method of supply convertor comprising a main circuit, the main circuit is by ac/dc translation circuit and directly
Stream/DC transfer circuit composition, the DC/DC conversion circuit adjust output electricity by opening for switching tube with shutdown
Pressure, it is characterised in that:In the DC/DC conversion circuit controller, by increasing a busbar in its voltage loop
Voltage loop and first arithmetic device so that when its controller is switched to the busbar voltage ring control, supply convertor remains to keep
Certain power output;
Switching tube is controlled by drive signal through overdrive circuit in DC/DC conversion circuit, obtains the drive signal,
Specifically comprise the following steps:
Busbar voltage setting value and busbar voltage sampled value generate controlling value V1, the controlling value V1 warps after second arithmetic device
It crosses the first negative-feedback compensated regulator and generates controlling value V2;Output voltage setting value passes through the second operation with output voltage sampled value
Controlling value V3, the controlling value V3 are generated after device generates controlling value V4, the controlling value by the second negative-feedback compensated regulator
The V2 and controlling value V4 generates controlling value V5, the controlling value V5 by described in signal generator generation by first arithmetic device
Drive signal.
2. the control method of supply convertor as described in claim 1, it is characterised in that:The operation of the first arithmetic device is
The output valve of minimizing operation, first arithmetic device is the minimum value in two input values of the first arithmetic device;
The operation of the second arithmetic device is to seek difference operation, and the output valve of the second arithmetic device is the second arithmetic device two
The difference of input value;
The busbar voltage setting value is less than busbar voltage minimum value when supply convertor steady operation.
3. the control method of supply convertor according to claim 1, it is characterised in that:The controlling value V5 and output electricity
It flows sampled value and generates controlling value V6, the controlling value V6 by the generation control of third negative-feedback compensated regulator by second arithmetic device
Value V7 processed, the controlling value V7 generate the drive signal by signal generator.
4. the control method of supply convertor according to claim 3, it is characterised in that:Output voltage sampled value and output
Current sampling data generates controlling value V8, the controlling value V5 and the controlling value V8 by third arithmetic unit and passes through second arithmetic device
Generate the controlling value V6.
The operation of the third arithmetic unit is multiplication operation, i.e., the output valve of the described third arithmetic unit is the third arithmetic unit two
The product value of a input value.
5. control method according to claim 1, it is characterised in that:Switching tube can in the DC/DC conversion circuit
With using control modes such as Frequency-variable Modulation, pulsewidth modulation and phase shifting controls, the corresponding drive signal is respectively to switch frequency
The phase shift angle signal of rate signal, pulse duty factor signal and different switching tube duty ratios.
6. a kind of supply convertor device, it is characterised in that:Including ac/dc translation circuit, bus capacitor, DC/DC
Translation circuit, the first sample circuit, the second sample circuit, driving circuit and controller circuitry, the supply convertor device
The input terminal of the input terminal connection ac/dc translation circuit, the output end of the ac/dc translation circuit pass through
The input terminal of bus capacitor and the DC/DC conversion circuit is connected in parallel, the DC/DC conversion circuit it is defeated
Outlet connects the supply convertor device output end, and bus capacitor voltage passes through the first sample circuit generatrix voltage
Sampled value, output voltage obtain output voltage sampled value, the busbar voltage sampled value and institute by second sample circuit
It states output voltage sampled value to be sent in the controller circuitry, the controller closed-loop control generates drive signal through overdriving
Circuit controls opening and turning off for switching tube in the DC to DC converter.
7. supply convertor device according to claim 6, it is characterised in that:Output current is by third sampling electricity
Rood is to output current sampled value, and in the controller circuitry, the controlling value V5 is passed through with the output current sampled value
It crosses second arithmetic device and generates controlling value V6, the controlling value V6 by third negative-feedback compensated regulator generation controlling value V7, institute
It states controlling value V7 and generates drive signal by signal generator, the drive signal is controlled described straight by the driving circuit
Switching tube opening and turning off in stream/DC transfer circuit.
8. supply convertor device according to claim 6, it is characterised in that:It is described in the controller circuitry
Output voltage sampled value generates controlling value V8, the controlling value V5 and institute with the output current sampled value by third arithmetic unit
It states controlling value V8 and generates the controlling value V6 by second arithmetic device.
The operation of the third arithmetic unit is multiplication operation, i.e., the output valve of the described third arithmetic unit is the third arithmetic unit two
The product value of a input value.
9. supply convertor device according to claim 6, it is characterised in that:The controller is Digital Signal Processing
Device.
10. supply convertor device according to claim 6, it is characterised in that:When the DC/DC conversion circuit is
Translation circuit with transformer isolation, the and when ground level of the controller is secondary side ground level, primary current pass through described the
Three sample circuits generate primary current sampled value, and in the controller circuitry, the primary current sampled value is converted
At the output current sampled value.
11. supply convertor device according to claim 6, it is characterised in that:When DC/DC conversion circuit is that band becomes
The translation circuit of depressor isolation, and when the ground level of the controller is secondary side ground level, the first sample circuit is that isolation samples
Circuit;When the DC/DC conversion circuit be the translation circuit with transformer isolation, and the ground level of the controller be original
When the ground level of side, the second sample circuit, third sample circuit are isolation sample circuit, and driving circuit is isolated drive circuit.
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| CN201810851728.3A CN108696156A (en) | 2018-07-27 | 2018-07-27 | A kind of control method and its device of supply convertor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697813A (en) * | 2019-03-13 | 2020-09-22 | 青岛海尔智能技术研发有限公司 | Frequency conversion equipment, control method and device of PFC circuit of frequency conversion equipment and storage medium |
| CN113098343A (en) * | 2021-04-15 | 2021-07-09 | 深圳市正浩创新科技有限公司 | Output power control method, device and system of generator and electronic equipment |
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| CN107069803A (en) * | 2017-03-21 | 2017-08-18 | 特变电工西安电气科技有限公司 | The low-voltage crossing controller and method of a kind of two-stage type inverter |
| CN107124105A (en) * | 2017-05-05 | 2017-09-01 | 南京理工大学 | Improve isolated form three-level PFC converter PF control system and method |
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| CN113098343A (en) * | 2021-04-15 | 2021-07-09 | 深圳市正浩创新科技有限公司 | Output power control method, device and system of generator and electronic equipment |
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