CN114546015A - Safety power supply system for thermal equipment - Google Patents

Safety power supply system for thermal equipment Download PDF

Info

Publication number
CN114546015A
CN114546015A CN202210227559.2A CN202210227559A CN114546015A CN 114546015 A CN114546015 A CN 114546015A CN 202210227559 A CN202210227559 A CN 202210227559A CN 114546015 A CN114546015 A CN 114546015A
Authority
CN
China
Prior art keywords
controllable end
switching tube
controllable
tube
switch tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210227559.2A
Other languages
Chinese (zh)
Other versions
CN114546015B (en
Inventor
韩宗琪
陈泽波
杨学德
肖建球
张彤
姜惠文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Qingdao West Coast Thermal Co ltd
Original Assignee
Datang Qingdao West Coast Thermal Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Qingdao West Coast Thermal Co ltd filed Critical Datang Qingdao West Coast Thermal Co ltd
Priority to CN202210227559.2A priority Critical patent/CN114546015B/en
Publication of CN114546015A publication Critical patent/CN114546015A/en
Application granted granted Critical
Publication of CN114546015B publication Critical patent/CN114546015B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G05F1/561—Voltage to current converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention relates to a safety power supply system for thermal equipment, which comprises: the circuit comprises an input end, an output circuit, a first-stage conversion circuit, a second-stage conversion circuit, a third-stage conversion circuit, a feedback amplification circuit, a conversion rate improving circuit, an active feedback circuit and a current detection circuit; one end of the input end is connected with an external power supply, the other end of the input end is connected with a first-stage conversion circuit, the first-stage conversion circuit is connected with a second-stage conversion circuit, the second-stage conversion circuit is connected with a third-stage conversion circuit, the feedback amplification circuit is connected between the active feedback circuit and the first-stage conversion circuit, the current detection circuit is arranged between the second-stage conversion circuit and the third-stage conversion circuit, and the output circuit is provided with an adjustable resistor.

Description

Safety power supply system for thermal equipment
Technical Field
The invention relates to the technical field of thermal equipment, in particular to a safety power supply system of the thermal equipment.
Background
In northern areas of China, a central heating mode is generally adopted for heat supply in winter, and heat supply enterprises send hot water to residential districts and enterprises or large-scale enterprises through urban high-temperature heat supply pipelines when using boilers and the like. Because coal is adopted in heating or many places of heating, coal is a non-renewable resource and needs to be saved, thermal equipment for heating can also use electric energy and the like in the prior art, but when central heating or other thermal equipment is used, because the application range is wide, the accuracy of comprehensive monitoring of the use data needs to be improved, how to meet the requirements that the temperature is too low and the user is not satisfied, and the temperature is too high and the energy waste is caused, and the like.
Disclosure of Invention
The invention discloses a safety power supply system for thermal equipment, which comprises: the circuit comprises an input end, an output circuit, a first-stage conversion circuit, a second-stage conversion circuit, a third-stage conversion circuit, a feedback amplification circuit, a conversion rate improving circuit, an active feedback circuit and a current detection circuit; one end of the input end is connected with an external power supply and used for receiving externally input electric energy, the other end of the input end is connected with a first-stage conversion circuit, the first-stage conversion circuit is connected with a second-stage conversion circuit, the second-stage conversion circuit is connected with a third-stage conversion circuit, the feedback amplification circuit is connected between the active feedback circuit and the first-stage conversion circuit and used for amplifying an output signal fed back by the active feedback circuit, the conversion rate improving circuit is arranged between the second-stage conversion circuit and the third-stage conversion circuit and used for improving the conversion rate of output voltage, the current detecting circuit is arranged between the second-stage conversion circuit and the third-stage conversion circuit and used for sampling output current and feeding back the output current to the third-stage conversion circuit, the output circuit is provided with an adjustable resistor and used for adjusting a resistance value according to an output voltage requirement, the output end is used for being connected with valve driving equipment or detection equipment of thermal equipment, and safe power supply is carried out on the valve driving equipment or the detection equipment of the thermal equipment.
The safety power supply system for the thermal equipment comprises: the first-stage conversion circuit includes: a switch tube M01-M08 and a switch tube MB, wherein the controllable end of the switch tube M01 is connected with Vref, the first non-controllable end of the switch tube M01 is connected with the second non-controllable end of the switch tube M04 and the first non-controllable end of the switch tube M06, the second non-controllable end of the switch tube M01 is connected with the second non-controllable end of the switch tube M02 and the first non-controllable end of the switch tube Mb, and the second non-controllable end of the switch tube Mb is grounded; the first non-controllable end of the switching tube M02 is connected to the second non-controllable end of the switching tube M03 and the first non-controllable end of the switching tube M05, and the second non-controllable end of the switching tube M02 is connected to the second non-controllable end of the switching tube M01 and the first non-controllable end of the switching tube Mb; the first non-controllable ends of the switching tube M03 and the switching tube M04 are connected with a power supply VDD, the switching tube M03 is connected with the controllable end of the switching tube M04, the second non-controllable end of the switching tube M03 is connected with the first non-controllable end of the switching tube M01 and the first non-controllable end of the switching tube M05, the second non-controllable end of the switching tube M05 is connected with the first non-controllable end of the switching tube M07, the controllable end of the switching tube 07 and the controllable end of the switching tube M08, and the second non-controllable end of the switching tube M07 is grounded; the second non-controllable end of the switching tube M04 is connected to the first non-controllable end of the switching tube M02 and the first non-controllable end of the switching tube M06, the controllable end of the switching tube M06 is connected to the controllable end of the switching tube M05, the second non-controllable end of the switching tube M06 is connected to the controllable end of the switching tube M11 and the first non-controllable end of the switching tube M08, and the second non-controllable end of the switching tube M08 is grounded.
The safety power supply system for the thermal equipment comprises: the second stage conversion circuit includes: a switch tube M09-M12; the first non-controllable ends of the switch tube M09 and the switch tube M10 are connected with a power supply VDD, the controllable end of the switch tube M09 is connected with the controllable end of the switch tube M10 and the second non-controllable end of the switch tube M09, the second non-controllable end of the switch tube M09 is connected with the first non-controllable end of the switch tube M11, the controllable end of the switch tube M11 is connected with the second non-controllable end of the switch tube M06, the first non-controllable end of the switch tube M08 and the controllable end of the switch tube MFF, and the second non-controllable end of the switch tube M11 is grounded; the second non-controllable end of the switching tube M10 is connected to the first end of the capacitor Cm, the controllable end of the switching tube Mp, the first non-controllable end of the switching tube M12 and the first non-controllable end of the switching tube M19, the controllable end of the switching tube M12 is connected to the controllable end of the switching tube M08 and the controllable end of the switching tube M07, the second non-controllable end of the switching tube M12 is grounded, the second non-controllable end of the switching tube M19 is grounded, and the controllable end of the switching tube M19 is connected to the controllable end of the switching tube M18, the second non-controllable end of the switching tube M18 and the second non-controllable end of the switching tube M17.
The safety power supply system for the thermal equipment comprises: the third stage conversion circuit includes: a switching tube Mp and a capacitor Cm; the first non-controllable end of the switching tube Mp is connected with a power supply VDD, the controllable end of the switching tube Mp is connected with the first end of a capacitor Cm and the second non-controllable end of a switching tube M10, the second non-controllable end of the switching tube Mp is connected with the second end of the capacitor Cm, the first non-controllable end of a switching tube MFF, the first end of a resistor R1, the first end of a capacitor CL, the first end of a resistor RL, the first end of a capacitor Ca and an output end Vo;
the controllable end of the switch tube MFF is connected to the controllable end of the switch tube M11, the second non-controllable end of the switch tube M14 and the first non-controllable end of the switch tube M15, the second non-controllable end of the switch tube MFF is grounded, and the feedback amplification circuit comprises the switch tube MFF.
The safety power supply system for the thermal equipment comprises an active feedback circuit and a control circuit, wherein the active feedback circuit comprises: switch tubes M13-M16 and switch tubes MB13-MB 16; the controllable end of the switch tube M13 and the controllable end of the switch tube MB13 are connected to a power supply VDD, the controllable end of the switch tube M13 is connected to the controllable end of the switch tube MB13, the second uncontrollable end of the switch tube MB1 and the controllable end of the switch tube MB1, the second uncontrollable end of the switch tube M13 is connected to the controllable end of the switch tube M17 and the first uncontrollable end of the switch tube M16, the second uncontrollable end of the switch tube M16 is connected to the second end of the capacitor Ca and the first uncontrollable end of the switch tube M14, the controllable end of the switch tube M16 is connected to the controllable end of the switch tube MB16, the first uncontrollable end of the switch tube M16 and the second uncontrollable end of the switch tube MB13, the controllable end of the switch tube M937 is connected to the controllable end of the switch tube MB14, the second uncontrollable end of the switch tube MB4 and the controllable end of the switch tube MB 3772, the controllable end of the switch tube MB14 is connected to the controllable end of the switch tube M15, the controllable end of the switch tube M15 and the controllable end of the switch tube M15, The second non-controllable end of the switching tube MB14 and the first non-controllable end of the switching tube MB15, and the second non-controllable ends of the switching tube M15 and the switching tube MB15 are grounded; the second non-controllable end of the switch tube MB13 is connected with the first non-controllable end of the switch tube MB16, the second non-controllable end of the switch tube MB16 is connected with the first non-controllable end of the switch tube MB14, and the first non-controllable end of the switch tube MB14 is connected with the first non-controllable end of the switch tube MB 15.
The safety power supply system for the thermal equipment comprises a slew rate improving circuit and a switching circuit, wherein the slew rate improving circuit comprises: a switch tube M17-M19; the first non-controllable end of the switching tube M17 is connected with a power supply VDD, the controllable end of the switching tube M17 is connected with the second non-controllable end of the switching tube M13, the second non-controllable end of the switching tube M17 is connected with the first non-controllable end of the switching tube M18, the controllable end of the switching tube M18 and the controllable end of the switching tube M19, and the second non-controllable end of the switching tube M18 is grounded.
The safety power supply system for the thermal equipment further comprises a current bias circuit, the current bias circuit is connected with the conversion rate improving circuit, and the current bias circuit comprises: a switching tube MB1-MB4, a current source IB1 and a current source IB 2;
a first non-controllable end of the switching tube MB1 is connected with a power supply VDD, a controllable end of the switching tube MB1 is connected with a second non-controllable end of the switching tube MB1 and a first end of a current source IB1, and a second end of the current source IB1 is grounded; the first non-controllable end of the switch tube MB2 is connected with a power supply VDD, the controllable end of the switch tube MB2 is connected with the second non-controllable end of the switch tube MB2, the first non-controllable end of the switch tube MB3 and the controllable end of the switch tube MB3, the second non-controllable end of the switch tube MB3 is connected with the first non-controllable end of the switch tube MB4, the controllable end of the switch tube MB4 is connected with the second non-controllable end of the switch tube MB4 and the first end of the current IB2, and the second end of the current source IB2 is grounded.
The safety power supply system for the thermal equipment comprises a current detection circuit and a power supply control circuit, wherein the current detection circuit comprises: switching tubes M201-M204; the controllable end of the switching tube M201 is connected to the second non-controllable end of the switching tube M10, the controllable end of the switching tube Mp1 and the first end of the capacitor Cp, the first non-controllable end of the switching tube M201 is connected to a power supply VDD, the second non-controllable end of the switching tube M201 is connected to the first non-controllable end of the switching tube M202, the controllable end of the switching tube M203 and the controllable end of the switching tube M204, the controllable end of the switching tube M202 is connected to the power supply VDD, the second non-controllable end of the switching tube M202 is grounded, the first non-controllable end of the switching tube M203 is connected to the power supply VDD, the second non-controllable end of the switching tube M203 is connected to the controllable end of the switching tube M119 and the first non-controllable end of the switching tube M204, and the second non-controllable end of the switching tube M204 is grounded.
The safety power supply system for the thermal equipment comprises an output circuit and a control circuit, wherein the output circuit comprises: the switching tubes Mp1, M119-M120, a capacitor Cp, a capacitor Cc, a capacitor Co, a resistor rdsp, a resistor R1, a resistor R2, a capacitor CL, a resistor RESR, a capacitor CL and a resistor RL; a first non-controllable end of the switching tube Mp1 is connected with a power supply VDD, a second non-controllable end of the switching tube Mp1 is connected with a second end of the capacitor Cp, a second end of the resistor rdsp, a second end of the capacitor Cc, a first non-controllable end of the switching tube M119, a first end of the capacitor Co, a first end of the capacitor Ca and an output end Vo, a controllable end of the switching tube M119 is connected with a second non-controllable end of the switching tube M203 and a first non-controllable end of the switching tube M204, a second non-controllable end of the switching tube M119 is connected with a first non-controllable end of the switching tube M120, a controllable end of the switching tube M120 is connected with a controllable end of the switching tube M11, a controllable end of the switching tube MFF and a first end of the capacitor Cc, a second non-controllable end of the switching tube M120 is grounded, and a second end of the capacitor Co is grounded; the resistor rdsp is an adjustable resistor; the second end of the resistor R1 is connected with the first end of the resistor R2 and the controllable end of the switch tube M02, the second end of the resistor R2 is grounded, the second end of the capacitor CL is connected with the first end of the resistor RESR and the first end of the resistor R2, the second end of the resistor RESR is grounded, the second end of the resistor RL is grounded, and the resistor RESR is a controllable resistor.
The invention provides a safety power supply system for thermal equipment, which can effectively improve the power supply stability of driving equipment or detection equipment in the thermal equipment and promote the overall safe and stable operation of the thermal equipment. The improvement of the invention is that a three-stage conversion circuit is arranged to carry out hierarchical regulation of power supply output, so that the accuracy and stability of output are improved; as another improvement of the invention, each stage conversion circuit is provided with different units for adjusting parameters, such as an active feedback circuit, a conversion efficiency improving circuit and the like, and different conversion stages are respectively arranged, so that the stage-by-stage and stage-by-stage adjustment can be performed according to target output, and the accuracy of an adjustment result is ensured; the invention is further improved in that a plurality of different adjustable resistors are arranged in the output circuit, matching power supply can be performed according to output voltages of different thermal equipment, a current bias and current detection circuit is arranged, current matching adjustment can be performed according to current requirements of different loads, and safety and stability of the thermal equipment are met with greater adaptability.
Drawings
Fig. 1 is a functional schematic diagram of a safety power supply system for a thermal device according to the present invention.
Fig. 2 is a schematic structural diagram of a safety power supply system for a thermal device according to the present invention.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Fig. 1 is a functional schematic diagram of a safety power supply system for a thermal device according to the present invention. The invention discloses a safety power supply system for thermal equipment, which comprises: the circuit comprises an input end, an output circuit, a first-stage conversion circuit, a second-stage conversion circuit, a third-stage conversion circuit, a feedback amplification circuit, a conversion rate improving circuit, an active feedback circuit and a current detection circuit; one end of the input end is connected with an external power supply and used for receiving externally input electric energy, the other end of the input end is connected with a first-stage conversion circuit, the first-stage conversion circuit is connected with a second-stage conversion circuit, the second-stage conversion circuit is connected with a third-stage conversion circuit, the feedback amplification circuit is connected between the active feedback circuit and the first-stage conversion circuit and used for amplifying an output signal fed back by the active feedback circuit, the conversion rate improving circuit is arranged between the second-stage conversion circuit and the third-stage conversion circuit and used for improving the conversion rate of output voltage, the current detecting circuit is arranged between the second-stage conversion circuit and the third-stage conversion circuit and used for sampling output current and feeding back the output current to the third-stage conversion circuit, the output circuit is provided with an adjustable resistor and used for adjusting a resistance value according to an output voltage requirement, the output end is used for being connected with valve driving equipment or detection equipment of thermal equipment, and safe power supply is carried out on the valve driving equipment or the detection equipment of the thermal equipment.
Fig. 2 is a schematic diagram of a specific structure of a safety power supply system for a thermal device according to the present invention. The safety power supply system for the thermal equipment comprises: the first-stage conversion circuit includes: a switch tube M01-M08 and a switch tube MB, wherein the controllable end of the switch tube M01 is connected with Vref, the first non-controllable end of the switch tube M01 is connected with the second non-controllable end of the switch tube M04 and the first non-controllable end of the switch tube M06, the second non-controllable end of the switch tube M01 is connected with the second non-controllable end of the switch tube M02 and the first non-controllable end of the switch tube Mb, and the second non-controllable end of the switch tube Mb is grounded; the first non-controllable end of the switching tube M02 is connected to the second non-controllable end of the switching tube M03 and the first non-controllable end of the switching tube M05, and the second non-controllable end of the switching tube M02 is connected to the second non-controllable end of the switching tube M01 and the first non-controllable end of the switching tube Mb; the first non-controllable ends of the switching tube M03 and the switching tube M04 are connected with a power supply VDD, the switching tube M03 is connected with the controllable end of the switching tube M04, the second non-controllable end of the switching tube M03 is connected with the first non-controllable end of the switching tube M01 and the first non-controllable end of the switching tube M05, the second non-controllable end of the switching tube M05 is connected with the first non-controllable end of the switching tube M07, the controllable end of the switching tube 07 and the controllable end of the switching tube M08, and the second non-controllable end of the switching tube M07 is grounded; the second non-controllable end of the switching tube M04 is connected to the first non-controllable end of the switching tube M02 and the first non-controllable end of the switching tube M06, the controllable end of the switching tube M06 is connected to the controllable end of the switching tube M05, the second non-controllable end of the switching tube M06 is connected to the controllable end of the switching tube M11 and the first non-controllable end of the switching tube M08, and the second non-controllable end of the switching tube M08 is grounded.
The safety power supply system for the thermal equipment comprises: the second stage conversion circuit includes: a switch tube M09-M12; the first non-controllable ends of the switch tube M09 and the switch tube M10 are connected with a power supply VDD, the controllable end of the switch tube M09 is connected with the controllable end of the switch tube M10 and the second non-controllable end of the switch tube M09, the second non-controllable end of the switch tube M09 is connected with the first non-controllable end of the switch tube M11, the controllable end of the switch tube M11 is connected with the second non-controllable end of the switch tube M06, the first non-controllable end of the switch tube M08 and the controllable end of the switch tube MFF, and the second non-controllable end of the switch tube M11 is grounded; the second non-controllable end of the switching tube M10 is connected to the first end of the capacitor Cm, the controllable end of the switching tube Mp, the first non-controllable end of the switching tube M12 and the first non-controllable end of the switching tube M19, the controllable end of the switching tube M12 is connected to the controllable end of the switching tube M08 and the controllable end of the switching tube M07, the second non-controllable end of the switching tube M12 is grounded, the second non-controllable end of the switching tube M19 is grounded, and the controllable end of the switching tube M19 is connected to the controllable end of the switching tube M18, the second non-controllable end of the switching tube M18 and the second non-controllable end of the switching tube M17.
The safety power supply system for the thermal equipment comprises: the third stage conversion circuit includes: a switching tube Mp and a capacitor Cm; the first non-controllable end of the switching tube Mp is connected with a power supply VDD, the controllable end of the switching tube Mp is connected with the first end of a capacitor Cm and the second non-controllable end of a switching tube M10, the second non-controllable end of the switching tube Mp is connected with the second end of the capacitor Cm, the first non-controllable end of a switching tube MFF, the first end of a resistor R1, the first end of a capacitor CL, the first end of a resistor RL, the first end of a capacitor Ca and an output end Vo;
the controllable end of the switch tube MFF is connected to the controllable end of the switch tube M11, the second non-controllable end of the switch tube M14 and the first non-controllable end of the switch tube M15, the second non-controllable end of the switch tube MFF is grounded, and the feedback amplification circuit comprises the switch tube MFF.
The safety power supply system for the thermal equipment comprises an active feedback circuit and a control circuit, wherein the active feedback circuit comprises: a switching tube M13-M16, a switching tube MB13-MB 16; the controllable end of the switch tube M13 and the controllable end of the switch tube MB13 are connected to a power supply VDD, the controllable end of the switch tube M13 is connected to the controllable end of the switch tube MB13, the second uncontrollable end of the switch tube MB1 and the controllable end of the switch tube MB1, the second uncontrollable end of the switch tube M13 is connected to the controllable end of the switch tube M17 and the first uncontrollable end of the switch tube M16, the second uncontrollable end of the switch tube M16 is connected to the second end of the capacitor Ca and the first uncontrollable end of the switch tube M14, the controllable end of the switch tube M16 is connected to the controllable end of the switch tube MB16, the first uncontrollable end of the switch tube M16 and the second uncontrollable end of the switch tube MB13, the controllable end of the switch tube M937 is connected to the controllable end of the switch tube MB14, the second uncontrollable end of the switch tube MB4 and the controllable end of the switch tube MB 3772, the controllable end of the switch tube MB14 is connected to the controllable end of the switch tube M15, the controllable end of the switch tube M15 and the controllable end of the switch tube M15, The second non-controllable end of the switching tube MB14 and the first non-controllable end of the switching tube MB15, and the second non-controllable ends of the switching tube M15 and the switching tube MB15 are grounded; the second non-controllable end of the switch tube MB13 is connected with the first non-controllable end of the switch tube MB16, the second non-controllable end of the switch tube MB16 is connected with the first non-controllable end of the switch tube MB14, and the first non-controllable end of the switch tube MB14 is connected with the first non-controllable end of the switch tube MB 15.
The safety power supply system for the thermal equipment comprises a slew rate improving circuit and a switching circuit, wherein the slew rate improving circuit comprises: a switch tube M17-M19; the first non-controllable end of the switching tube M17 is connected with a power supply VDD, the controllable end of the switching tube M17 is connected with the second non-controllable end of the switching tube M13, the second non-controllable end of the switching tube M17 is connected with the first non-controllable end of the switching tube M18, the controllable end of the switching tube M18 and the controllable end of the switching tube M19, and the second non-controllable end of the switching tube M18 is grounded.
The safety power supply system for the thermal equipment further comprises a current bias circuit, the current bias circuit is connected with the conversion rate improving circuit, and the current bias circuit comprises: a switching tube MB1-MB4, a current source IB1 and a current source IB 2;
a first non-controllable end of the switching tube MB1 is connected with a power supply VDD, a controllable end of the switching tube MB1 is connected with a second non-controllable end of the switching tube MB1 and a first end of a current source IB1, and a second end of the current source IB1 is grounded; the first non-controllable end of the switch tube MB2 is connected with a power supply VDD, the controllable end of the switch tube MB2 is connected with the second non-controllable end of the switch tube MB2, the first non-controllable end of the switch tube MB3 and the controllable end of the switch tube MB3, the second non-controllable end of the switch tube MB3 is connected with the first non-controllable end of the switch tube MB4, the controllable end of the switch tube MB4 is connected with the second non-controllable end of the switch tube MB4 and the first end of the current IB2, and the second end of the current source IB2 is grounded.
The safety power supply system for the thermal equipment comprises a current detection circuit and a power supply control circuit, wherein the current detection circuit comprises: switching tubes M201-M204; the controllable end of the switching tube M201 is connected to the second non-controllable end of the switching tube M10, the controllable end of the switching tube Mp1 and the first end of the capacitor Cp, the first non-controllable end of the switching tube M201 is connected to a power supply VDD, the second non-controllable end of the switching tube M201 is connected to the first non-controllable end of the switching tube M202, the controllable end of the switching tube M203 and the controllable end of the switching tube M204, the controllable end of the switching tube M202 is connected to the power supply VDD, the second non-controllable end of the switching tube M202 is grounded, the first non-controllable end of the switching tube M203 is connected to the power supply VDD, the second non-controllable end of the switching tube M203 is connected to the controllable end of the switching tube M119 and the first non-controllable end of the switching tube M204, and the second non-controllable end of the switching tube M204 is grounded.
The safety power supply system for the thermal equipment comprises an output circuit and a control circuit, wherein the output circuit comprises: the switching tubes Mp1, M119-M120, a capacitor Cp, a capacitor Cc, a capacitor Co, a resistor rdsp, a resistor R1, a resistor R2, a capacitor CL, a resistor RESR, a capacitor CL and a resistor RL; a first non-controllable end of the switching tube Mp1 is connected with a power supply VDD, a second non-controllable end of the switching tube Mp1 is connected with a second end of the capacitor Cp, a second end of the resistor rdsp, a second end of the capacitor Cc, a first non-controllable end of the switching tube M119, a first end of the capacitor Co, a first end of the capacitor Ca and an output end Vo, a controllable end of the switching tube M119 is connected with a second non-controllable end of the switching tube M203 and a first non-controllable end of the switching tube M204, a second non-controllable end of the switching tube M119 is connected with a first non-controllable end of the switching tube M120, a controllable end of the switching tube M120 is connected with a controllable end of the switching tube M11, a controllable end of the switching tube MFF and a first end of the capacitor Cc, a second non-controllable end of the switching tube M120 is grounded, and a second end of the capacitor Co is grounded; the resistor rdsp is an adjustable resistor; the second end of the resistor R1 is connected with the first end of the resistor R2 and the controllable end of the switch tube M02, the second end of the resistor R2 is grounded, the second end of the capacitor CL is connected with the first end of the resistor RESR and the first end of the resistor R2, the second end of the resistor RESR is grounded, the second end of the resistor RL is grounded, and the resistor RESR is a controllable resistor.
The invention provides a safety power supply system for thermal equipment, which can effectively improve the power supply stability of driving equipment or detection equipment in the thermal equipment and improve the overall safe and stable operation of the thermal equipment. The improvement of the invention is that a three-stage conversion circuit is arranged to carry out hierarchical regulation of power supply output, so that the accuracy and stability of output are improved; as another improvement of the invention, each stage conversion circuit is provided with different units for adjusting parameters, such as an active feedback circuit, a conversion efficiency improving circuit and the like, and different conversion stages are respectively arranged, so that the stage-by-stage and stage-by-stage adjustment can be performed according to target output, and the accuracy of an adjustment result is ensured; the invention is further improved in that a plurality of different adjustable resistors are arranged in the output circuit, matching power supply can be performed according to output voltages of different thermal equipment, a current bias and current detection circuit is arranged, current matching adjustment can be performed according to current requirements of different loads, and safety and stability of the thermal equipment are met with greater adaptability.

Claims (9)

1. A safety power supply system for a thermal device, comprising: the circuit comprises an input end, an output circuit, a first-stage conversion circuit, a second-stage conversion circuit, a third-stage conversion circuit, a feedback amplification circuit, a conversion rate improving circuit, an active feedback circuit and a current detection circuit; one end of the input end is connected with an external power supply and used for receiving externally input electric energy, the other end of the input end is connected with a first-stage conversion circuit, the first-stage conversion circuit is connected with a second-stage conversion circuit, the second-stage conversion circuit is connected with a third-stage conversion circuit, the feedback amplification circuit is connected between the active feedback circuit and the first-stage conversion circuit and used for amplifying an output signal fed back by the active feedback circuit, the conversion rate improving circuit is arranged between the second-stage conversion circuit and the third-stage conversion circuit and used for improving the conversion rate of output voltage, the current detecting circuit is arranged between the second-stage conversion circuit and the third-stage conversion circuit and used for sampling output current and feeding back the output current to the third-stage conversion circuit, the output circuit is provided with an adjustable resistor and used for adjusting a resistance value according to an output voltage requirement, the output end is used for being connected with valve driving equipment or detection equipment of thermal equipment, and safe power supply is carried out on the valve driving equipment or the detection equipment of the thermal equipment.
2. A safety power supply system for thermal devices as in claim 1, comprising: the first stage conversion circuit includes: a switch tube M01-M08 and a switch tube MB, wherein the controllable end of the switch tube M01 is connected with Vref, the first non-controllable end of the switch tube M01 is connected with the second non-controllable end of the switch tube M04 and the first non-controllable end of the switch tube M06, the second non-controllable end of the switch tube M01 is connected with the second non-controllable end of the switch tube M02 and the first non-controllable end of the switch tube Mb, and the second non-controllable end of the switch tube Mb is grounded; the first non-controllable end of the switching tube M02 is connected to the second non-controllable end of the switching tube M03 and the first non-controllable end of the switching tube M05, and the second non-controllable end of the switching tube M02 is connected to the second non-controllable end of the switching tube M01 and the first non-controllable end of the switching tube Mb; the first non-controllable ends of the switching tube M03 and the switching tube M04 are connected with a power supply VDD, the switching tube M03 is connected with the controllable end of the switching tube M04, the second non-controllable end of the switching tube M03 is connected with the first non-controllable end of the switching tube M01 and the first non-controllable end of the switching tube M05, the second non-controllable end of the switching tube M05 is connected with the first non-controllable end of the switching tube M07, the controllable end of the switching tube 07 and the controllable end of the switching tube M08, and the second non-controllable end of the switching tube M07 is grounded; the second non-controllable end of the switching tube M04 is connected to the first non-controllable end of the switching tube M02 and the first non-controllable end of the switching tube M06, the controllable end of the switching tube M06 is connected to the controllable end of the switching tube M05, the second non-controllable end of the switching tube M06 is connected to the controllable end of the switching tube M11 and the first non-controllable end of the switching tube M08, and the second non-controllable end of the switching tube M08 is grounded.
3. A safety power supply system for a thermal device as in claim 2, comprising: the second stage conversion circuit includes: a switch tube M09-M12; the first non-controllable ends of the switch tube M09 and the switch tube M10 are connected with a power supply VDD, the controllable end of the switch tube M09 is connected with the controllable end of the switch tube M10 and the second non-controllable end of the switch tube M09, the second non-controllable end of the switch tube M09 is connected with the first non-controllable end of the switch tube M11, the controllable end of the switch tube M11 is connected with the second non-controllable end of the switch tube M06, the first non-controllable end of the switch tube M08 and the controllable end of the switch tube MFF, and the second non-controllable end of the switch tube M11 is grounded; the second non-controllable end of the switching tube M10 is connected to the first end of the capacitor Cm, the controllable end of the switching tube Mp, the first non-controllable end of the switching tube M12 and the first non-controllable end of the switching tube M19, the controllable end of the switching tube M12 is connected to the controllable end of the switching tube M08 and the controllable end of the switching tube M07, the second non-controllable end of the switching tube M12 is grounded, the second non-controllable end of the switching tube M19 is grounded, and the controllable end of the switching tube M19 is connected to the controllable end of the switching tube M18, the second non-controllable end of the switching tube M18 and the second non-controllable end of the switching tube M17.
4. A safety power supply system for thermal devices according to claim 3, comprising: the third stage conversion circuit includes: a switching tube Mp and a capacitor Cm; the first non-controllable end of the switching tube Mp is connected with a power supply VDD, the controllable end of the switching tube Mp is connected with the first end of a capacitor Cm and the second non-controllable end of a switching tube M10, the second non-controllable end of the switching tube Mp is connected with the second end of the capacitor Cm, the first non-controllable end of a switching tube MFF, the first end of a resistor R1, the first end of a capacitor CL, the first end of a resistor RL, the first end of a capacitor Ca and an output end Vo;
the controllable end of the switch tube MFF is connected to the controllable end of the switch tube M11, the second non-controllable end of the switch tube M14 and the first non-controllable end of the switch tube M15, the second non-controllable end of the switch tube MFF is grounded, and the feedback amplification circuit comprises the switch tube MFF.
5. A safety power supply system for a thermal device as in claim 4, wherein the active feedback circuit comprises: a switching tube M13-M16, a switching tube MB13-MB 16; the controllable end of the switch tube M13 and the controllable end of the switch tube MB13 are connected to a power supply VDD, the controllable end of the switch tube M13 is connected to the controllable end of the switch tube MB13, the second uncontrollable end of the switch tube MB1 and the controllable end of the switch tube MB1, the second uncontrollable end of the switch tube M13 is connected to the controllable end of the switch tube M17 and the first uncontrollable end of the switch tube M16, the second uncontrollable end of the switch tube M16 is connected to the second end of the capacitor Ca and the first uncontrollable end of the switch tube M14, the controllable end of the switch tube M16 is connected to the controllable end of the switch tube MB16, the first uncontrollable end of the switch tube M16 and the second uncontrollable end of the switch tube MB13, the controllable end of the switch tube M937 is connected to the controllable end of the switch tube MB14, the second uncontrollable end of the switch tube MB4 and the controllable end of the switch tube MB 3772, the controllable end of the switch tube MB14 is connected to the controllable end of the switch tube M15, the controllable end of the switch tube M15 and the controllable end of the switch tube M15, The second non-controllable end of the switching tube MB14 and the first non-controllable end of the switching tube MB15, and the second non-controllable ends of the switching tube M15 and the switching tube MB15 are grounded; the second non-controllable end of the switch tube MB13 is connected with the first non-controllable end of the switch tube MB16, the second non-controllable end of the switch tube MB16 is connected with the first non-controllable end of the switch tube MB14, and the first non-controllable end of the switch tube MB14 is connected with the first non-controllable end of the switch tube MB 15.
6. A safety power supply system for a thermal device as in claim 5, wherein said slew rate enhancement circuit comprises: a switch tube M17-M19; the first non-controllable end of the switching tube M17 is connected with a power supply VDD, the controllable end of the switching tube M17 is connected with the second non-controllable end of the switching tube M13, the second non-controllable end of the switching tube M17 is connected with the first non-controllable end of the switching tube M18, the controllable end of the switching tube M18 and the controllable end of the switching tube M19, and the second non-controllable end of the switching tube M18 is grounded.
7. The thermal device safety power supply system of claim 6, further comprising a current bias circuit coupled to the slew rate enhancement circuit, the current bias circuit comprising: a switching tube MB1-MB4, a current source IB1 and a current source IB 2;
a first non-controllable end of the switching tube MB1 is connected with a power supply VDD, a controllable end of the switching tube MB1 is connected with a second non-controllable end of the switching tube MB1 and a first end of a current source IB1, and a second end of the current source IB1 is grounded; the first non-controllable end of the switch tube MB2 is connected with a power supply VDD, the controllable end of the switch tube MB2 is connected with the second non-controllable end of the switch tube MB2, the first non-controllable end of the switch tube MB3 and the controllable end of the switch tube MB3, the second non-controllable end of the switch tube MB3 is connected with the first non-controllable end of the switch tube MB4, the controllable end of the switch tube MB4 is connected with the second non-controllable end of the switch tube MB4 and the first end of the current IB2, and the second end of the current source IB2 is grounded.
8. A safety power supply system for a thermal device as in claim 7, wherein said current sensing circuit comprises: switching tubes M201-M204; the controllable end of the switching tube M201 is connected to the second non-controllable end of the switching tube M10, the controllable end of the switching tube Mp1 and the first end of the capacitor Cp, the first non-controllable end of the switching tube M201 is connected to a power supply VDD, the second non-controllable end of the switching tube M201 is connected to the first non-controllable end of the switching tube M202, the controllable end of the switching tube M203 and the controllable end of the switching tube M204, the controllable end of the switching tube M202 is connected to the power supply VDD, the second non-controllable end of the switching tube M202 is grounded, the first non-controllable end of the switching tube M203 is connected to the power supply VDD, the second non-controllable end of the switching tube M203 is connected to the controllable end of the switching tube M119 and the first non-controllable end of the switching tube M204, and the second non-controllable end of the switching tube M204 is grounded.
9. A safety power supply system for a thermal device as in claim 8, wherein said output circuit comprises: the switching tubes Mp1, M119-M120, a capacitor Cp, a capacitor Cc, a capacitor Co, a resistor rdsp, a resistor R1, a resistor R2, a capacitor CL, a resistor RESR, a capacitor CL and a resistor RL; a first non-controllable end of the switching tube Mp1 is connected with a power supply VDD, a second non-controllable end of the switching tube Mp1 is connected with a second end of the capacitor Cp, a second end of the resistor rdsp, a second end of the capacitor Cc, a first non-controllable end of the switching tube M119, a first end of the capacitor Co, a first end of the capacitor Ca and an output end Vo, a controllable end of the switching tube M119 is connected with a second non-controllable end of the switching tube M203 and a first non-controllable end of the switching tube M204, a second non-controllable end of the switching tube M119 is connected with a first non-controllable end of the switching tube M120, a controllable end of the switching tube M120 is connected with a controllable end of the switching tube M11, a controllable end of the switching tube MFF and a first end of the capacitor Cc, a second non-controllable end of the switching tube M120 is grounded, and a second end of the capacitor Co is grounded; the resistor rdsp is an adjustable resistor; the second end of the resistor R1 is connected with the first end of the resistor R2 and the controllable end of the switch tube M02, the second end of the resistor R2 is grounded, the second end of the capacitor CL is connected with the first end of the resistor RESR and the first end of the resistor R2, the second end of the resistor RESR is grounded, the second end of the resistor RL is grounded, and the resistor RESR is a controllable resistor.
CN202210227559.2A 2022-03-08 2022-03-08 Safety power supply system of thermodynamic equipment Active CN114546015B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210227559.2A CN114546015B (en) 2022-03-08 2022-03-08 Safety power supply system of thermodynamic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210227559.2A CN114546015B (en) 2022-03-08 2022-03-08 Safety power supply system of thermodynamic equipment

Publications (2)

Publication Number Publication Date
CN114546015A true CN114546015A (en) 2022-05-27
CN114546015B CN114546015B (en) 2024-02-20

Family

ID=81664047

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210227559.2A Active CN114546015B (en) 2022-03-08 2022-03-08 Safety power supply system of thermodynamic equipment

Country Status (1)

Country Link
CN (1) CN114546015B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009302781A (en) * 2008-06-11 2009-12-24 Toshiba Corp Negative feedback amplifier
CN104601123A (en) * 2014-12-24 2015-05-06 天津大学 Low-power consumption three-level operational amplifier for driving large-load capacitor
KR20160012858A (en) * 2014-07-25 2016-02-03 인제대학교 산학협력단 Low dropout regulator
CN206162234U (en) * 2016-09-14 2017-05-10 成都旋极星源信息技术有限公司 Weighting current feedback's low dropout regulator
CN109976424A (en) * 2019-04-18 2019-07-05 电子科技大学 A kind of non-capacitive low-dropout linear voltage regulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009302781A (en) * 2008-06-11 2009-12-24 Toshiba Corp Negative feedback amplifier
KR20160012858A (en) * 2014-07-25 2016-02-03 인제대학교 산학협력단 Low dropout regulator
CN104601123A (en) * 2014-12-24 2015-05-06 天津大学 Low-power consumption three-level operational amplifier for driving large-load capacitor
CN206162234U (en) * 2016-09-14 2017-05-10 成都旋极星源信息技术有限公司 Weighting current feedback's low dropout regulator
CN109976424A (en) * 2019-04-18 2019-07-05 电子科技大学 A kind of non-capacitive low-dropout linear voltage regulator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李刚: "有源反馈频率补偿三级放大器设计", 微计算机信息, vol. 24, no. 9, pages 272 - 273 *

Also Published As

Publication number Publication date
CN114546015B (en) 2024-02-20

Similar Documents

Publication Publication Date Title
CN103516043B (en) Power switch-over control signal produces circuit, dual power supply redundancy electric power system and method
CN102913839A (en) Solar power supplied energy-saving illumination system
CN104377964A (en) Integrated control circuit on basis of voltage loop feedback and automatic load current sharing
CN109976435A (en) Multistage solar cell array power regulation and control circuit for space
CN103219765B (en) Photovoltaic charging controller
CN114546015A (en) Safety power supply system for thermal equipment
CN205178887U (en) Power supply circuit with L6599 controller
CN102637054B (en) 50-ampere power consumption balanced-type high-power constant-current source
CN204967263U (en) Isolation circuit and dual-power supply system
CN204089330U (en) A kind of adaptive power-supply battery supplies power with double circuit device
CN212463059U (en) MOS pipe parallel control circuit
CN215343894U (en) Output overvoltage protection circuit and switching power supply
CN108964081A (en) It is a kind of applied to stablize microgrid energy-storage system output circuit structure
CN205004734U (en) Auxiliary electrical power source and protection control circuit thereof
CN113872176A (en) Double-bus positive line reverse filling prevention circuit based on field effect transistor
CN203014675U (en) Buck-boost switching power supply and controller thereof
CN220820526U (en) Quick feedback overcurrent control circuit suitable for large-scale survey ware
CN205622602U (en) Amplifier circuit based on triode
CN204304781U (en) D.C. regulated power supply
CN220421797U (en) Double-path selection and self-locking circuit
CN204677481U (en) Fan control device
CN117254569B (en) Low quiescent current CC wake-up circuit
CN204721250U (en) Heat-energy utilizing device and air conditioner
CN213484574U (en) Main/standby power conversion circuit
CN219458657U (en) Power utilization detection control circuit and energy storage equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant