CN110380600A - A kind of improvement power supply moment loads overpowering method and power supply - Google Patents
A kind of improvement power supply moment loads overpowering method and power supply Download PDFInfo
- Publication number
- CN110380600A CN110380600A CN201910734459.7A CN201910734459A CN110380600A CN 110380600 A CN110380600 A CN 110380600A CN 201910734459 A CN201910734459 A CN 201910734459A CN 110380600 A CN110380600 A CN 110380600A
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- error amplifier
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005070 sampling Methods 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000007423 decrease Effects 0.000 abstract 1
- 230000009514 concussion Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012423 maintenance Methods 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of improvement power supply moment and loads overpowering method and power supply; by detecting power supply realtime power; when realtime power reaches maximum limitation power points; trigger voltage decline; maintain rated power output; without overpower protection, rated power required for user can also be maintained in powered on moment.Technical solution of the present invention is not necessarily to too many additional costs, at low cost, simple and practical.
Description
Technical field
The present invention relates to power technique fields, and in particular to a method of improve the load of power supply moment.
Background technique
Traditional AUTO RANGE(automatic range) to encounter instantaneous output peak power be rated output power to power supply occasional
2-3 times the case where, once therefore usually can all design output power more than carrying out overpower protection in the case where rated power,
Within the scope of the setting for operating in rated power for making complete machine safety.But this method brings bad Product Experience to user,
It is easy overpower protection, restarting.
Such as a output voltage 0-100V is adjustable, output electric current 0-20A is adjustable, exports the AUTO of rated power 1000W
RANGE power supply, when full voltage 100V output, maximum output current is 1000W/100V=10A；When full electric current exports 20A,
Maximum output voltage is 1000W/20A=50V；And instantaneous maximum power is 100V*20A=2000W, relative to rated output power
1000W ratio is 2:1.When user's voltage and current is set to maximum value, then electric power starting moment band load maximum value is
100V*20A=2000W.Due to 2 times of rated output powers of the power, it will cause the output of complete machine overpower while also be easy to causeing
The load of system moment is excessive to be caused to shake, and can even cause output voltage and electricity if it is the machine of 3 times of rated output powers
Stream concussion leads to load abnormal, and traditional AUTO RANGE power supply can all select overpower protection, be ensured using the method for shutdown whole
Machine safe and stable operation.
Summary of the invention
In view of the above problems, the purpose of the present invention is to provide can improve power supply moment load generate concussion method and
Power-supply device.Specific technical solution is as follows:
A kind of overpowering method of improvement power supply moment load, it is characterised in that include the following steps:
Real-time sampling electric power output voltage and output electric current, calculate power supply realtime power；
When power supply realtime power is more than rated power, and reaches the maximum peak power point of the machine setting, voltage Vc=P/ is calculated
Is, wherein P is the voltage threshold power of the machine setting, and Is is the electric power outputting current of real-time sampling；
Vc is compared with the voltage VREF that user is the machine setting, lesser voltage value in the two is taken to be sent into error amplification
Device carries out error amplification with electric power output voltage sampled value, realizes PWM closed-loop control.
A kind of power supply, including error amplifier, output voltage sampling circuit, PWM generation circuit and power circuit, it is described defeated
The output end of the input terminal connection power circuit of voltage sampling circuit, output end connect an input terminal of error amplifier out；
One input terminal of the output end connection PWM generation circuit of the error amplifier；The output end of the PWM generation circuit connects
The control signal input of power circuit；Characterized by further comprising a comparing unit and a computing unit, the computing unit
Calculate voltage value Vc=P/Is, wherein P is the voltage threshold power of the machine setting, and Is is the electric power outputting current of real-time sampling；
One input terminal of the comparing unit inputs the voltage value Vc, another input terminal inputs the voltage that user is the machine setting
VREF；Another input terminal of the output end connection error amplifier of the comparing unit, the smaller value in Vc and VREF is sent
Enter error amplifier, carries out error amplification with electric power output voltage sampled value, realize PWM closed-loop control.
The present invention passes through detection power supply realtime power, when realtime power reaches maximum limitation power points, triggering electricity
Drops maintain rated power output, are not necessarily to overpower protection, can also maintain specified function required for user in powered on moment
Rate.Technical solution of the present invention is not necessarily to too many additional costs, at low cost, economical and practical.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Specific embodiment
Technical method of the invention is described in further detail with reference to the accompanying drawing:
A kind of overpowering method of improvement power supply moment load, utilizes sample circuit real-time sampling electric power output voltage and output electricity
Stream calculates power supply realtime power.When detect power supply realtime power be more than rated power, and trigger the machine setting maximum peak
When value power points PK value (usual PK value is about 1.5-2 times of rated power), threshold power P and real-time sampling that the machine is set
Compared with calculating voltage value Vc=P/Is of electric current Is is the voltage VREF of the machine setting with user, lesser value in the two is taken to be sent into
In loop, PWM control is carried out.
Such as Fig. 1, AUTO RANGE power supply includes error amplifier, output voltage sampling circuit, PWM generation circuit and power
Circuit.Power circuit input voltage vin, output voltage Vo to load, the input terminal connection power electricity of output voltage sampling circuit
The output end on road, output end connect the backward end of error amplifier, Vo are sent to error amplifier, the output of error amplifier
One input terminal of end connection PWM generation circuit, another input terminal incoming carrier of PWM generation circuit, PWM generation circuit
The control signal input of output end connection power circuit.A comparing unit and a computing unit, computing unit meter is arranged in system
Calculating voltage value Vc=P/Is, wherein P is the voltage threshold power of the machine setting, and Is is the electric power outputting current of real-time sampling, than
Compared with an input terminal input voltage value Vc of unit, another input terminal inputs the voltage VREF that user is the machine setting.Compare
Another input terminal of the output end connection error amplifier of unit, send the smaller value in Vc and VREF into error amplifier,
Error amplification is carried out with electric power output voltage sampled value, realizes PWM closed-loop control.Comparing unit both can could also with hardware realization
With with software realization, computing unit directly can realize that other circuit modules belong to existing with the processing unit of power-supply system
Technology.
As shown, in normal work, the forward end of reference voltage VREF error originated from input amplifier, error amplifier is defeated
Ve to PWM generation circuit out generates the control signal of control power circuit, control compared with the carrier wave of input PWM generation circuit
The output of power stage.When detecting power beyond rated power to a certain degree, by the threshold power of setting and real-time sampling electricity
The calculating voltage Vc of Is is flowed compared with reference voltage VREF, and small value is taken to be sent into the forward end of error amplifier.If Vc voltage is small
In VREF, Vc voltage is made currently to be sent into loop for voltage reference value, then output voltage will be exported according to this voltage,
Maintenance rated power that simultaneously can be stable exports, it is ensured that system safe and stable operation, until user resets new voltage
It is set with electric current.
Claims (5)
1. a kind of improvement power supply moment loads overpowering method, it is characterised in that include the following steps:
Real-time sampling electric power output voltage and output electric current, calculate power supply realtime power；
When power supply realtime power is more than rated power, and reaches the maximum peak power point of the machine setting, voltage Vc=P/ is calculated
Is, wherein P is the voltage threshold power of the machine setting, and Is is the electric power outputting current of real-time sampling；
Vc is compared with the voltage VREF that user is the machine setting, lesser voltage value in the two is taken to be sent into error amplification
Device carries out error amplification with electric power output voltage sampled value, realizes PWM closed-loop control.
2. improving power supply moment as described in claim 1 loads overpowering method, it is characterised in that: the peak-peak function
The performance number of rate point is 1.5-2 times of source nominal power.
3. improving power supply moment as described in claim 1 loads overpowering method, it is characterised in that: lesser electricity in the two
Pressure value is sent into the forward end of error amplifier, and electric power output voltage sampled value is sent into the backward end of error amplifier.
4. a kind of power supply, including error amplifier, output voltage sampling circuit, PWM generation circuit and power circuit, the output
The output end of the input terminal connection power circuit of voltage sampling circuit, output end connect an input terminal of error amplifier；Institute
State an input terminal of the output end connection PWM generation circuit of error amplifier；The output end of the PWM generation circuit connects function
The control signal input of rate circuit；Characterized by further comprising a comparing unit and a computing unit, the computing unit meter
Calculate voltage value Vc=P/Is, wherein P is the voltage threshold power of the machine setting, and Is is the electric power outputting current of real-time sampling；Institute
An input terminal for stating comparing unit inputs the voltage value Vc, another input terminal inputs the voltage that user is the machine setting
VREF；Another input terminal of the output end connection error amplifier of the comparing unit, the smaller value in Vc and VREF is sent
Enter error amplifier, carries out error amplification with electric power output voltage sampled value, realize PWM closed-loop control.
5. power supply as claimed in claim 4, it is characterised in that: the smaller value in Vc and VREF is sent into the forward direction of error amplifier
End, electric power output voltage sampled value are sent into the backward end of error amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734459.7A CN110380600A (en) | 2019-08-09 | 2019-08-09 | A kind of improvement power supply moment loads overpowering method and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734459.7A CN110380600A (en) | 2019-08-09 | 2019-08-09 | A kind of improvement power supply moment loads overpowering method and power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110380600A true CN110380600A (en) | 2019-10-25 |
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ID=68258697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910734459.7A Pending CN110380600A (en) | 2019-08-09 | 2019-08-09 | A kind of improvement power supply moment loads overpowering method and power supply |
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| Country | Link |
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| CN (1) | CN110380600A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112286272A (en) * | 2020-10-30 | 2021-01-29 | 深圳市科华恒盛科技有限公司 | Dynamic limiting method and device for output electric signal |
| CN113676035A (en) * | 2021-10-21 | 2021-11-19 | 深圳市鼎阳科技股份有限公司 | Overpower protection control method, switching power supply and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843042A (en) * | 2011-06-22 | 2012-12-26 | Nxp股份有限公司 | Switched mode power supply |
| CN108068642A (en) * | 2016-11-09 | 2018-05-25 | 现代自动车株式会社 | The charging unit of installation in the car |
| CN108365753A (en) * | 2017-01-27 | 2018-08-03 | 半导体元件工业有限责任公司 | The method of resonance converter, the controller for converter and formation controller |
| CN108809073A (en) * | 2018-05-31 | 2018-11-13 | 奥克斯空调股份有限公司 | Control method, control system and the air conditioner of APFC circuit voltages |
| CN209994271U (en) * | 2019-08-09 | 2020-01-24 | 博士德科技(江苏)有限公司 | Power supply for improving instant over-power loading of power supply |
-
2019
- 2019-08-09 CN CN201910734459.7A patent/CN110380600A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843042A (en) * | 2011-06-22 | 2012-12-26 | Nxp股份有限公司 | Switched mode power supply |
| CN108068642A (en) * | 2016-11-09 | 2018-05-25 | 现代自动车株式会社 | The charging unit of installation in the car |
| CN108365753A (en) * | 2017-01-27 | 2018-08-03 | 半导体元件工业有限责任公司 | The method of resonance converter, the controller for converter and formation controller |
| CN108809073A (en) * | 2018-05-31 | 2018-11-13 | 奥克斯空调股份有限公司 | Control method, control system and the air conditioner of APFC circuit voltages |
| CN209994271U (en) * | 2019-08-09 | 2020-01-24 | 博士德科技(江苏)有限公司 | Power supply for improving instant over-power loading of power supply |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112286272A (en) * | 2020-10-30 | 2021-01-29 | 深圳市科华恒盛科技有限公司 | Dynamic limiting method and device for output electric signal |
| CN112286272B (en) * | 2020-10-30 | 2023-02-28 | 深圳市科华恒盛科技有限公司 | Dynamic limiting method and device for output electric signal |
| CN113676035A (en) * | 2021-10-21 | 2021-11-19 | 深圳市鼎阳科技股份有限公司 | Overpower protection control method, switching power supply and electronic equipment |
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