CN112040617A - Lamp power supply voltage stabilization control circuit and method - Google Patents
Lamp power supply voltage stabilization control circuit and method Download PDFInfo
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- CN112040617A CN112040617A CN202010759605.4A CN202010759605A CN112040617A CN 112040617 A CN112040617 A CN 112040617A CN 202010759605 A CN202010759605 A CN 202010759605A CN 112040617 A CN112040617 A CN 112040617A
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- 230000006641 stabilisation Effects 0.000 title claims abstract description 31
- 238000011105 stabilization Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 13
- 238000005070 sampling Methods 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000011217 control strategy Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/14—Controlling the light source in response to determined parameters by determining electrical parameters of the light source
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
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- Dc-Dc Converters (AREA)
Abstract
The invention provides a lamp power supply voltage stabilization control circuit, which comprises: a power supply module; the voltage sampling circuit is connected with the power supply module and can acquire the output voltage of the power supply module in real time; the switch control circuit is communicated with the power supply module and the voltage sampling module, can control the electrifying current of the power supply module and further controls the output voltage of the power supply module; the PID controller is connected with the switch value control circuit and can adjust the size of the power-on circuit.
Description
Technical Field
The invention relates to the field of charging control of new energy electric automobiles, in particular to a lamp power supply voltage stabilization control circuit and a lamp power supply voltage stabilization control method.
Background
At present, with the development of the new energy industry supported by the state, the new energy automobile is developed in China for a long time, but with the increasing travel demand of new energy automobile owners, the frequency of the new energy automobile in use in daily life of people is increased, and the electricity safety during charging becomes a concern of the new energy automobile owners, so that a higher requirement is provided for the electric energy supply of a charging device, a stable switching power supply is needed, especially under the condition of short circuit, important parts of the automobile are possibly burnt, huge economic loss is caused, and casualties are possibly caused in serious situations, so that the voltage stabilization control of the power supply voltage is a problem to be solved urgently.
Disclosure of Invention
The lamp power supply voltage stabilization control circuit provided by the invention is additionally provided with the voltage stabilization control circuit, so that the power supply voltage can be maintained in a voltage stabilization state.
The invention also provides a lamp power supply voltage stabilization control method, which can accurately control the magnitude of the power supply current through the closed-loop PID controller, realize the accurate control of the voltage value and improve the power supply stability of the power supply module.
The technical scheme provided by the invention is as follows:
a lamp power supply regulation control circuit, comprising:
a power supply module;
the voltage sampling circuit is connected with the power supply module and can acquire the output voltage of the power supply module in real time;
the switch control circuit is communicated with the power supply module and the voltage sampling module, can control the electrifying current of the power supply module and further controls the output voltage of the power supply module;
and a PID controller connected to the switching value control circuit and capable of adjusting the size of the energizing circuit.
Preferably, the power supply further comprises a short-circuit protection circuit capable of controlling the power supply to be turned off.
Preferably, the voltage sampling circuit has a resistor with a variable resistance, and the switch control circuit outputs a variable voltage to the voltage sampling circuit to change the resistance of the resistor.
Preferably, the variable voltage value output by the switch control circuit is in a range of 3V-12V.
A lamp power supply voltage stabilization control method comprises the following steps:
and detecting the voltage of the power supply module, inputting the ideal voltage, the voltage difference and the voltage difference change rate into the PID controller, and outputting the ideal voltage, the voltage difference and the voltage difference change rate as a control strategy of the power supply current.
Preferably, the PID controller includes a voltage loop controller and a voltage difference change rate loop controller;
the input of the voltage loop controller is the difference between a given target voltage and an actual detection voltage, namely the voltage difference, and the output of the voltage loop controller is the voltage change rate control amplitude;
calculating a target voltage change rate according to the voltage change rate control amplitude;
and inputting the difference between the target voltage change rate and the actual voltage change rate into a voltage difference change rate loop controller, wherein the output of the voltage difference change rate loop controller is the change amplitude of the power supply current.
Preferably, the PID control algorithm formula of the voltage loop controller is:
wherein R (t) is the output voltage change rate control amplitude, kpCorrection of the coefficient of proportionality, k, for a voltage loop controlleriCorrection factor, k, for integral term of voltage loop controllerdCorrection factor for differential term of voltage loop controller, ec(t) is the difference between the given target voltage and the actual detected voltage.
Preferably, the PID control algorithm formula of the voltage difference change rate loop controller is as follows:
wherein P (t) is the supply current variation amplitude, ki-pCorrection coefficient, k, for the proportional term of a voltage difference rate of change loop controlleri-iCorrection factor, k, for the integral term of a voltage difference rate of change loop controlleri-dCorrection factor for differential term of voltage difference rate-of-change loop controller, ep(t) is the difference between a given target voltage rate of change and the actual voltage rate of change.
Preferably, expert control rules are also included:
when in use
When the temperature of the water is higher than the set temperature,
wherein the content of the first and second substances,
is an ideal voltage, QiIs a measured voltage of pmTo vary the proportionality coefficient, imAs integral proportionality coefficient, dmIs a differential proportionality coefficient, is a time variation coefficient, k'pCorrection of the coefficient, k, for the scale term of a regular voltage loop controlleri' correction factor of integral term, k, of regular voltage loop controllerd' is the differential term correction factor of the regular voltage loop controller.
When in use
When the temperature of the water is higher than the set temperature,
wherein the content of the first and second substances,
is a target voltage change rate, PiIs the actual voltage change rate of k 'as the time change coefficient'i-pIs a proportional term correction factor, k 'of a regular voltage difference rate of change loop controller'i-iIs an integral term correction coefficient, k 'of a regular voltage difference change rate loop controller'i-dCorrection factor for the differential term of a regular voltage difference rate of change loop controller, ep(t) is the difference between a given target voltage rate of change and the actual voltage rate of change.
Advantageous effects
The lamp power supply voltage stabilization control circuit provided by the invention is additionally provided with the voltage stabilization control circuit, so that the power supply voltage can be maintained in a voltage stabilization state.
The invention also provides a lamp power supply voltage stabilization control method, which can accurately control the magnitude of the power supply current through the closed-loop PID controller, realize the accurate control of the voltage value and improve the power supply stability of the power supply module.
Drawings
Fig. 1 is a schematic diagram of a lamp power supply voltage stabilization control circuit according to the present invention.
Fig. 2 is a schematic diagram of a voltage sampling circuit according to the present invention.
Fig. 3 is a schematic diagram of a switch control circuit according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1, the present invention provides a lamp power supply voltage stabilization control circuit, which includes: the power supply comprises a power supply module, a voltage sampling circuit, switch control power and a PID controller.
The voltage sampling circuit is connected with the power supply module and can acquire the output voltage of the power supply module in real time; the control circuit is communicated with the power supply module and the voltage sampling module, can control the electrifying current of the power supply module and further controls the output voltage of the power supply module; and a PID controller connected to the switching value control circuit and capable of adjusting the size of the energizing circuit. The power supply also comprises a short-circuit protection circuit which can control the power supply to be turned off.
As shown in fig. 2, the voltage sampling circuit includes a resistor R2 with a variable resistance value and an operational amplifier circuit, and an output end of the operational amplifier circuit is connected to the PID controller. One end pin of the resistance R2 with variable resistance is connected with the same-direction input end of the operational amplification circuit, a divider resistance R1 is arranged between the resistance R2 with variable resistance and the operational amplification circuit, and the switch control circuit outputs variable voltage to the voltage sampling circuit so as to change the resistance of the resistance. The variable voltage value of the switch control circuit is in a range of 3V-12V.
As shown in fig. 3, the switch control circuit includes: first resistance unit and compensation resistance unit, the switch subunit has between first resistance unit and the compensation resistance unit, can control whether the compensation resistance unit inserts first resistance unit, wherein, first resistance unit includes resistance R6, divider resistance R4 and electric capacity C2, voltage sampling circuit is connected to resistance R6's one end, other end connect switch subunit Q1, the voltage input end is connected to the second section of switch subunit, the compensation resistance unit includes resistance R3, electric capacity C1 and resistance R5, realize voltage control through switch subunit Q1.
A lamp power supply voltage stabilization control method comprises the following steps:
and detecting the voltage of the power supply module, inputting the ideal voltage, the voltage difference and the voltage difference change rate into the PID controller, and outputting the ideal voltage, the voltage difference and the voltage difference change rate as a control strategy of the power supply current.
Preferably, the PID controller includes a voltage loop controller and a voltage difference change rate loop controller;
the input of the voltage loop controller is the difference between a given target voltage and an actual detection voltage, namely the voltage difference, and the output of the voltage loop controller is the voltage change rate control amplitude;
calculating a target voltage change rate according to the voltage change rate control amplitude;
and inputting the difference between the target voltage change rate and the actual voltage change rate into a voltage difference change rate loop controller, wherein the output of the voltage difference change rate loop controller is the change amplitude of the power supply current.
The PID control algorithm formula of the voltage loop controller is as follows:
wherein R (t) is the output voltage change rate control amplitude, kpCorrection of the coefficient of proportionality, k, for a voltage loop controlleriCorrection factor, k, for integral term of voltage loop controllerdCorrection factor for differential term of voltage loop controller, ec(t) is the difference between the given target voltage and the actual detected voltage.
The PID control algorithm formula of the voltage difference change rate loop controller is as follows:
wherein P (t) is the supply current variation amplitude, ki-pCorrection coefficient, k, for the proportional term of a voltage difference rate of change loop controlleri-iCorrection factor, k, for the integral term of a voltage difference rate of change loop controlleri-dCorrection factor for differential term of voltage difference rate-of-change loop controller, ep(t) is the difference between a given target voltage rate of change and the actual voltage rate of change.
Also includes expert control rules:
when in use
When the temperature of the water is higher than the set temperature,
wherein the content of the first and second substances,
is an ideal voltage, QiIs a measured voltage of pmTo vary the proportionality coefficient, imAs integral proportionality coefficient, dmIs a differential proportionality coefficient, is a time variation coefficient, k'pCorrection of the coefficient, k, for the scale term of a regular voltage loop controlleri' correction factor of integral term, k, of regular voltage loop controllerd' is the differential term correction factor of the regular voltage loop controller.
When in use
When the temperature of the water is higher than the set temperature,
wherein the content of the first and second substances,
is a target voltage change rate, PiIs the actual voltage change rate of k 'as the time change coefficient'i-pIs a proportional term correction factor, k 'of a regular voltage difference rate of change loop controller'i-iIs an integral term correction coefficient, k 'of a regular voltage difference change rate loop controller'i-dFor a regular voltage difference rate of change loop controllerDifferential term correction coefficient of ep(t) is the difference between a given target voltage rate of change and the actual voltage rate of change.
The lamp power supply voltage stabilization control circuit provided by the invention is additionally provided with the voltage stabilization control circuit, so that the power supply voltage can be maintained in a voltage stabilization state.
The invention also provides a lamp power supply voltage stabilization control method, which can accurately control the magnitude of the power supply current through the closed-loop PID controller, realize the accurate control of the voltage value and improve the power supply stability of the power supply module.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. A lamp power supply voltage stabilization control circuit, comprising:
a power supply module;
the voltage sampling circuit is connected with the power supply module and can acquire the output voltage of the power supply module in real time;
the switch control circuit is communicated with the power supply module and the voltage sampling module, can control the electrifying current of the power supply module and further controls the output voltage of the power supply module;
and a PID controller connected to the switching value control circuit and capable of adjusting the size of the energizing circuit.
2. The lamp power supply voltage stabilization control circuit of claim 1, further comprising a short circuit protection circuit capable of controlling the power supply to be turned off.
3. The lamp power supply voltage stabilization control circuit of claim 2, wherein the voltage sampling circuit has a resistor with a variable resistance, and the switch control circuit outputs a variable voltage to the voltage sampling circuit to change the resistance of the resistor.
4. The lamp power supply voltage stabilization control circuit of claim 3, wherein the variable voltage value output by the switch control circuit is in a range of 3V-12V.
5. A lamp power supply voltage stabilization control method is characterized by comprising the following steps:
and detecting the voltage of the power supply module, inputting the ideal voltage, the voltage difference and the voltage difference change rate into the PID controller, and outputting the ideal voltage, the voltage difference and the voltage difference change rate as a control strategy of the power supply current.
6. The lamp power supply voltage stabilization control method according to claim 5, wherein the PID controller comprises a voltage loop controller and a voltage difference change rate loop controller;
the input of the voltage loop controller is the difference between a given target voltage and an actual detection voltage, namely the voltage difference, and the output of the voltage loop controller is the voltage change rate control amplitude;
calculating a target voltage change rate according to the voltage change rate control amplitude;
and inputting the difference between the target voltage change rate and the actual voltage change rate into a voltage difference change rate loop controller, wherein the output of the voltage difference change rate loop controller is the change amplitude of the power supply current.
7. The lamp power supply voltage stabilization control method according to claim 6, wherein the PID control algorithm formula of the voltage loop controller is as follows:
wherein R (t) is the output voltage change rate control amplitude, kpProportional term correction for voltage loop controllerCoefficient, kiCorrection factor, k, for integral term of voltage loop controllerdCorrection factor for differential term of voltage loop controller, ec(t) is the difference between the given target voltage and the actual detected voltage.
8. The lamp power supply voltage stabilization control method according to claim 7, wherein the PID control algorithm formula of the voltage difference change rate loop controller is as follows:
wherein P (t) is the supply current variation amplitude, ki-pCorrection coefficient, k, for the proportional term of a voltage difference rate of change loop controlleri-iCorrection factor, k, for the integral term of a voltage difference rate of change loop controlleri-dCorrection factor for differential term of voltage difference rate-of-change loop controller, ep(t) is the difference between a given target voltage rate of change and the actual voltage rate of change.
9. The lamp power supply voltage stabilization control method according to claim 8, further comprising expert control rules:
when in use
When the temperature of the water is higher than the set temperature,
wherein the content of the first and second substances,
is an ideal voltage, QiIs a measured voltage of pmTo vary the proportionality coefficient, imAs integral proportionality coefficient, dmIs a differential proportionality coefficient, is a time variation coefficient, k'pCorrection of the coefficient, k, for the scale term of a regular voltage loop controlleri' being regular voltage loop controlIntegral term correction factor of the device, kd' is the differential term correction factor of the regular voltage loop controller.
When in use
When the temperature of the water is higher than the set temperature,
wherein the content of the first and second substances,
is a target voltage change rate, PiIs the actual voltage change rate of k 'as the time change coefficient'i-pIs a proportional term correction factor, k 'of a regular voltage difference rate of change loop controller'i-iIs an integral term correction coefficient, k 'of a regular voltage difference change rate loop controller'i-dCorrection factor for the differential term of a regular voltage difference rate of change loop controller, ep(t) is the difference between a given target voltage rate of change and the actual voltage rate of change.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010759605.4A CN112040617A (en) | 2020-07-31 | 2020-07-31 | Lamp power supply voltage stabilization control circuit and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010759605.4A CN112040617A (en) | 2020-07-31 | 2020-07-31 | Lamp power supply voltage stabilization control circuit and method |
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| CN112040617A true CN112040617A (en) | 2020-12-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758520A (en) * | 2005-10-31 | 2006-04-12 | 华中科技大学 | Inverter of instantaneous voltage PID analogue controlled |
| CN203967995U (en) * | 2014-07-17 | 2014-11-26 | 南京机电职业技术学院 | A kind of controlled rectification D.C. regulated power supply |
| CN107104593A (en) * | 2017-05-16 | 2017-08-29 | 湖南拓天节能控制技术股份有限公司 | The shared integral term PID double-closed-loop control devices of PWM count word power supply |
| CN111463772A (en) * | 2020-04-22 | 2020-07-28 | 中国船舶重工集团公司第七0四研究所 | Energy storage interface converter control method capable of inhibiting voltage fluctuation of microgrid bus |
-
2020
- 2020-07-31 CN CN202010759605.4A patent/CN112040617A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758520A (en) * | 2005-10-31 | 2006-04-12 | 华中科技大学 | Inverter of instantaneous voltage PID analogue controlled |
| CN203967995U (en) * | 2014-07-17 | 2014-11-26 | 南京机电职业技术学院 | A kind of controlled rectification D.C. regulated power supply |
| CN107104593A (en) * | 2017-05-16 | 2017-08-29 | 湖南拓天节能控制技术股份有限公司 | The shared integral term PID double-closed-loop control devices of PWM count word power supply |
| CN111463772A (en) * | 2020-04-22 | 2020-07-28 | 中国船舶重工集团公司第七0四研究所 | Energy storage interface converter control method capable of inhibiting voltage fluctuation of microgrid bus |
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Application publication date: 20201204 |
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