CN107168443A - A kind of control method for loading switching quick response - Google Patents
A kind of control method for loading switching quick response Download PDFInfo
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- CN107168443A CN107168443A CN201611136306.5A CN201611136306A CN107168443A CN 107168443 A CN107168443 A CN 107168443A CN 201611136306 A CN201611136306 A CN 201611136306A CN 107168443 A CN107168443 A CN 107168443A
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- voltage
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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
- G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of control method for loading switching quick response, step is as follows：（1）The output valve of voltage loop is calculated by PID；（2）Voltage error value is calculated, voltage error value and error predetermined value set in advance are compared：（i）When voltage error value is less than error predetermined value or voltage error is fluctuated near null value, then the output valve of voltage loop is assigned to loop final output control dutycycle；（ii）When voltage error value is more than error predetermined value, the value according to obtained by being calculated the relation of input voltage and output voltage is assigned to loop final output value.The present invention, which provides a kind of output voltage that avoids, larger overshoot, the impact to power electronic power device is reduced, so as to improve the reliability of equipment.
Description
Technical field
The present invention relates to a kind of control method for loading switching quick response.
Background technology
In conventional constant voltage ring, the gain of loop is influenceed by stability, it is impossible to unlimited increase, when working condition changes, is born
Change is carried by discontinuous mode to continuous mode, loop needs that dutycycle is altered in steps, to reach new stable state.This process is by ring
The influence of road gain can be slower, inevitably produces larger output voltage mutation so that equipment has potential danger,
There is certain influence on equipment dependability.Conventional voltage ring control method is after output voltage is compared with reference voltage, to carry out ring
Road calculates as output to carry out the regulation of dutycycle.Assuming that equilibrium mode is currently at, and Voltage loop exports smaller, Voltage loop
Output exported as final control loop.When output loading increases suddenly, output voltage declines, so that the loop meter of Voltage loop
Calculation value becomes larger, thus loop is altered in steps dutycycle to reach new stable state.This process is due to voltage loop gain
It can slowly change, inevitably produce larger output voltage mutation, have potential prestige to the reliability of power supply unit
The side of body.
The content of the invention
For above-mentioned the deficiencies in the prior art part, the problem of present invention is solved is：Present invention offer one kind avoids defeated
Going out voltage has larger overshoot, reduces the impact to power electronic power device, so as to improve the reliability of equipment.
To solve the above problems, the technical scheme that the present invention takes is as follows：
A kind of control method for loading switching quick response, step is as follows：
（1）Load is subjected to safety detection by voltage detection device first, prevents output voltage from burning PID modules；Then
The output valve of voltage loop is calculated by PID again；
（2）Voltage error value is calculated, voltage error value and error predetermined value set in advance are compared：
（i）When voltage error value is less than error predetermined value or voltage error is fluctuated near null value, then by voltage loop
Output valve is assigned to loop final output control dutycycle；
（ii）When voltage error value is more than error predetermined value, the value according to obtained by being calculated the relation of input voltage and output voltage
It is assigned to loop final output value.
（3）By step（2）The output valve of middle voltage loop is filled before finally loop final output is assigned to by voltage alarm
Put progress detection alarm.
Further, described step（2）The step of（i）In voltage loop output valve again pass by PID regulation exported.
Further, described step（2）The step of（ii）The middle value according to obtained by being calculated the relation of input voltage and output voltage
Final assignment is carried out after being calculated again by PID.
Further, described step（2）In error predetermined value be worst error predetermined value.
Beneficial effects of the present invention
For the Voltage loop control in conventional power source equipment, the present invention proposes novel digitized voltage ring control mode, is used for
Ensure the reduction output voltage overshoot under heavy load dynamic.By judging voltage error value, as theoretical calculation loop output with
PID calculates the criterion of the switching of loop output；When meeting loop switching condition, the loop output of theoretical calculation is regard as voltage
The output of ring controls dutycycle, it is ensured that final output output voltage in the case of the heavy duty of unloaded impact does not have larger prominent
Become.
Brief description of the drawings
Fig. 1 is structural representation flow chart of the invention.
Embodiment
Present invention is described in further detail below.
A kind of control method for loading switching quick response, step is as follows：（1）Load is carried out by voltage detection device first
Safety detection, prevents output voltage from burning PID modules；Then the output valve of voltage loop is calculated by PID again；（2）Calculate
Voltage error value, voltage error value and error predetermined value set in advance are compared：（i）When voltage error value is less than error
When predetermined value or voltage error are fluctuated near null value, then the output valve of voltage loop is assigned to the control of loop final output
Dutycycle；（ii）When voltage error value is more than error predetermined value, gained is calculated according to the relation of input voltage and output voltage
Value be assigned to loop final output value.（3）By step（2）To be assigned to loop finally defeated final for the output valve of middle voltage loop
Detection alarm is carried out by voltage alarm device before going out.Further, described step（2）The step of（i）In voltage loop
Output valve again pass by PID regulation exported.Further, described step（2）The step of（ii）It is middle according to input voltage
Final assignment is carried out after being calculated with the value obtained by the relation calculating of output voltage again by PID.Further, described step
（2）In error predetermined value be worst error predetermined value.
For the Voltage loop control in conventional power source equipment, the present invention proposes novel digitized voltage ring control mode, is used for
Ensure the reduction output voltage overshoot under heavy load dynamic.By judging voltage error value, as theoretical calculation loop output with
PID calculates the criterion of the switching of loop output；When meeting loop switching condition, the loop output of theoretical calculation is regard as voltage
The output of ring controls dutycycle, it is ensured that final output output voltage in the case of the heavy duty of unloaded impact does not have larger prominent
Become.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (4)
1. a kind of control method for loading switching quick response, it is characterised in that step is as follows：
（1）Load is subjected to safety detection by voltage detection device first, prevents output voltage from burning PID modules；Then
The output valve of voltage loop is calculated by PID again；
（2）Voltage error value is calculated, voltage error value and error predetermined value set in advance are compared：
（i）When voltage error value is less than error predetermined value or voltage error is fluctuated near null value, then by voltage loop
Output valve is assigned to loop final output control dutycycle；
（ii）When voltage error value is more than error predetermined value, the value according to obtained by being calculated the relation of input voltage and output voltage
It is assigned to loop final output value;
（3）By step（2）The output valve of middle voltage loop is filled before finally loop final output is assigned to by voltage alarm
Put progress detection alarm.
2. the control method of load switching quick response according to claim 1, it is characterised in that described step（2）
The step of（i）In voltage loop output valve again pass by PID regulation exported.
3. the control method of load switching quick response according to claim 1, it is characterised in that described step（2）
The step of（ii）The middle value according to obtained by being calculated the relation of input voltage and output voltage carries out final after being calculated again by PID
Assignment.
4. the control method of load switching quick response according to claim 1, it is characterised in that described step（2）
In error predetermined value be worst error predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611136306.5A CN107168443A (en) | 2016-12-12 | 2016-12-12 | A kind of control method for loading switching quick response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611136306.5A CN107168443A (en) | 2016-12-12 | 2016-12-12 | A kind of control method for loading switching quick response |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107168443A true CN107168443A (en) | 2017-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611136306.5A Pending CN107168443A (en) | 2016-12-12 | 2016-12-12 | A kind of control method for loading switching quick response |
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| CN (1) | CN107168443A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687699A (en) * | 2018-12-29 | 2019-04-26 | 南京户能电子科技有限公司 | A kind of control method that digital voltage electric current loop real-time tracking output state soft is whole |
| WO2023024354A1 (en) * | 2021-08-25 | 2023-03-02 | 深圳市永联科技股份有限公司 | Method for suppressing overshoot of output voltage or output current, charging device, and medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060012344A1 (en) * | 2004-07-15 | 2006-01-19 | Aleks Velhner | Control system for an electric machine |
| US20110204862A1 (en) * | 2010-02-19 | 2011-08-25 | Exar Corporation | Digital control method for improving heavy-to-light (step down) load transient response of switch mode power supplies |
| CN102710325A (en) * | 2012-05-16 | 2012-10-03 | 上海斐讯数据通信技术有限公司 | Voltage alarming device |
| CN102946189A (en) * | 2011-08-15 | 2013-02-27 | 伊博电源（杭州）有限公司 | Method for controlling digital power supply control system |
| CN103257664A (en) * | 2008-06-04 | 2013-08-21 | 立锜科技股份有限公司 | Rapid response device and method of switching type power converter |
| CN105071641A (en) * | 2015-08-14 | 2015-11-18 | 东南大学 | Method for controlling dynamic response of switch power |
-
2016
- 2016-12-12 CN CN201611136306.5A patent/CN107168443A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060012344A1 (en) * | 2004-07-15 | 2006-01-19 | Aleks Velhner | Control system for an electric machine |
| CN103257664A (en) * | 2008-06-04 | 2013-08-21 | 立锜科技股份有限公司 | Rapid response device and method of switching type power converter |
| US20110204862A1 (en) * | 2010-02-19 | 2011-08-25 | Exar Corporation | Digital control method for improving heavy-to-light (step down) load transient response of switch mode power supplies |
| CN102946189A (en) * | 2011-08-15 | 2013-02-27 | 伊博电源（杭州）有限公司 | Method for controlling digital power supply control system |
| CN102710325A (en) * | 2012-05-16 | 2012-10-03 | 上海斐讯数据通信技术有限公司 | Voltage alarming device |
| CN105071641A (en) * | 2015-08-14 | 2015-11-18 | 东南大学 | Method for controlling dynamic response of switch power |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687699A (en) * | 2018-12-29 | 2019-04-26 | 南京户能电子科技有限公司 | A kind of control method that digital voltage electric current loop real-time tracking output state soft is whole |
| CN109687699B (en) * | 2018-12-29 | 2020-08-14 | 南京户能电子科技有限公司 | Control method for real-time tracking output state soft adjustment of digital voltage current loop |
| WO2023024354A1 (en) * | 2021-08-25 | 2023-03-02 | 深圳市永联科技股份有限公司 | Method for suppressing overshoot of output voltage or output current, charging device, and medium |
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Application publication date: 20170915 |