CN110277930A - A kind of self-adaption switch electric power source - Google Patents
A kind of self-adaption switch electric power source Download PDFInfo
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- CN110277930A CN110277930A CN201910550537.8A CN201910550537A CN110277930A CN 110277930 A CN110277930 A CN 110277930A CN 201910550537 A CN201910550537 A CN 201910550537A CN 110277930 A CN110277930 A CN 110277930A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/327—Means for protecting converters other than automatic disconnection against abnormal temperatures
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of self-adaption switch electric power sources, comprising: filter circuit, APF calibration of power circuit, inverter circuit, high frequency transformer, rectification circuit and control measuring unit；Filter circuit is filtered input power, filters out high frequency and harmonic component；APF calibration of power circuit will treated that power supply signal is adjusted to DC voltage 200V~DC voltage 400V through filter circuit；DC voltage is adjusted to high-frequency ac voltage by inverter circuit；High frequency transformer is converted for voltage signal and power transmission；Rectification circuit by ac voltage rectifier at corresponding DC output voltage, and by DC output voltage feedback to controlling measuring unit；It controls measuring unit and frequency modulation tune pulse-width controlled is carried out to APF calibration of power circuit and inverter circuit.Self-adaption switch electric power source of the present invention can carry out automatic adjusument to its output power, realize the control to running temperature, can be applicable to high altitude localities, extend service life.
Description
Technical field
The present invention relates to power electronics field, more particularly to a kind of self-adaption switch electric power source.
Background technique
With the development of microelectric technique and power electronic devices, Switching Power Supply is due to its small in size, light-weight, stability
The features such as high, is widely applied in high pressure, control field, especially in control and the communications field.
However, current communication power supply mainly use " YD/T1058-2007 communication with high frequency switch power supply system " and
" shocking preventing technology of YD/T944-2007 Communication Power Equipment requires and test method " standard is made, and low sea is mainly used in
Pull out region.When it operates in high altitude localities, there are more failures relative to plains region in operational process, and with
The rising of height above sea level and increase.By the analysis to trouble power it is found that the fever of power device is the master for leading to its failure
Want reason.This is because air pressure reduces with the rising of height above sea level, air molecule density is reduced, and is caused under the same conditions
The heat taken away reduces, i.e., the radiating condition of system is deteriorated, and gets higher power device running temperature under same loss, thus
Device is caused to work and damage under long-time high-temperature condition.
Therefore, how to provide a kind of Switching Power Supply that can adapt to high altitude localities is those skilled in the art's urgent need to resolve
The problem of.
Summary of the invention
In view of this, can adaptively be adjusted to its running temperature the present invention provides a kind of self-adaption switch electric power source
Section, can be applicable to high altitude localities, extends service life.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of self-adaption switch electric power source, comprising: filter circuit, APF calibration of power circuit, inverter circuit, high frequency transformer,
Rectification circuit and control measuring unit；Input power successively passes through the filter circuit, the APF calibration of power circuit, described
Inverter circuit, the high frequency transformer and rectification circuit output；
The filter circuit is filtered input power, filters out high frequency and harmonic component；
The APF calibration of power circuit will treated that power supply signal is adjusted to DC voltage 200V through the filter circuit
~DC voltage 400V；
DC voltage is adjusted to high-frequency ac voltage by the inverter circuit；
The high frequency transformer is converted for voltage signal and power transmission；
The rectification circuit by ac voltage rectifier at corresponding DC output voltage, and extremely by DC output voltage feedback
The control measuring unit；
The control measuring unit carries out the pulsewidth control of frequency modulation tune to the APF calibration of power circuit and the inverter circuit
System.
Further, the filter circuit is EMI filter circuit.
Further, the EMI filter circuit be capacitor C1~C5 and with inductance L1~L4.
Further, the APF calibration of power circuit includes capacitor C6, capacitor C7, diode D1, inductance L5 and MOSFET pipe
One end of M1, the capacitor C6 are connected with the one end the inductance L5, and the other end of the capacitor C6 is connected to the ground, the inductance L5
The other end be connected with the collector of the MOSFET pipe M1, and be connected with the forward direction of the diode D1, the MOSFET pipe
The emitter of M1 is connected to the ground, and the diode D1 cathode is connected with one end of the capacitor C7, the other end of the capacitor C7
It is connected to the ground.
Further, the inverter circuit includes four MOSFET pipe M2~M5, the collector of the MOSFET pipe M2 and institute
The collector for stating MOSFET pipe M3 is connected, and the emitter of the MOSFET pipe M2 is connected with the collector of the MOSFET pipe M4,
The emitter of the MOSFET pipe M3 is connected with the collector of the MOSFET pipe M5, the emitter of the MOSFET pipe M4 and institute
The emitter for stating MOSFET pipe M5 is connected to the ground.
Further, the rectification circuit includes high-frequency diode D2~D5, the high-frequency diode D2 cathode and the height
The cathode of frequency diode D4 is connected, and the anode of the high-frequency diode D3 is connected with the anode of the high-frequency diode D5.
Further, the control measuring unit include temperature measuring circuit, tension measuring circuit, current measurement circuit,
MCU, communicating circuit and liquid crystal display display circuit, the temperature measuring circuit, the tension measuring circuit, current measurement electricity
Road, the communicating circuit and the liquid crystal display display circuit are connect with the MCU respectively.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides a kind of self-adaptive switch
Power supply, when the output voltage of system, electric current are higher than preset value, control measuring unit reduces the frequency and pulsewidth of inverter circuit
Value stablizes system output voltage and electric current in preset value, reduces power loss, to realize the adjusting to its running temperature.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is self-adaption switch electric power source functional block diagram provided by the invention.
Fig. 2 attached drawing is the circuit diagram of EMI filter circuit provided by the invention.
Fig. 3 attached drawing is the circuit diagram of APF calibration of power circuit provided by the invention.
Fig. 4 attached drawing is the circuit diagram of inverter circuit provided by the invention.
Fig. 5 attached drawing is the circuit diagram of high frequency transformer provided by the invention.
Fig. 6 attached drawing is the circuit diagram of rectification circuit provided by the invention.
Fig. 7 attached drawing is the circuit diagram of control measuring unit provided by the invention.
Fig. 8 attached drawing is that electric current provided by the invention adjusts control flow chart.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of self-adaption switch electric power source, which passes through to related power device operating temperature
Detection be lost under different air pressures according to the measured power device and temperature rise when finding that device operating temperature is excessively high
Relationship, increase due to being lost with the increase of electric current, therefore realized by reducing its size for flowing through electric current and it is lost
It reduces, to realize the adjusting to its running temperature, makes power module reliability service within the scope of redundancy, power supply system can be improved
The operational reliability of the systems such as communication network in system.
It specifically includes, EMI filter circuit, APF calibration of power circuit, inverter circuit, high frequency transformer, rectification circuit and control
Measuring unit processed, wherein control measuring unit becomes with EMI filter circuit, APF calibration of power circuit, inverter circuit, high frequency respectively
Depressor is connected with rectification circuit, and input power successively passes through the filter circuit, the APF calibration of power circuit, the inversion
Circuit, the high frequency transformer and rectification circuit output.
Wherein, as shown in Fig. 2, EMI filter circuit includes the LC filter circuit of L and C composition.
As shown in figure 3, APF calibration of power circuit is realized using boost circuit theory.
Input terminal is by parallel with capacitor C6, and one end of C6 is connected with the one end inductance L5, and one end of C6 is connected to the ground, inductance
The other end of L5 is connected with the collector of MOSFET pipe M1, while being connected with one end of diode D1, the transmitting of MOSFET pipe M1
Pole is connected to the ground, and the other end of diode D1 is connected with one end of output and capacitor C7, and the other end of capacitor C7 is connected to the ground.
As shown in figure 4, inverter circuit includes the MOSFET pipe of M2~M5.
The anode of direct-flow input end is connected with the collector of MOSFET pipe M2, M3, the collector phase of the emitter and M4 of M2
Even, while the emitter of M2 is connected with one end of the input terminal of subsequent transformer, and the emitter of M3 is connected with the collector of M5, together
When M3 emitter be connected with the other end of the input terminal of subsequent transformer, the emitter of MOSFET pipe M4, M5 are connected to the ground.
As shown in figure 5, the higher high-frequency ac voltage of voltage is become the lesser high-frequency alternating current of amplitude by high frequency transformer
Pressure.
The input terminal of high frequency transformer is connected with the output end of inverter respectively, output end and subsequent rectification circuit phase
Even.
As shown in fig. 6, rectification circuit includes the high-frequency diode of D2~D5.
One end of high-frequency ac input terminal is connected with the tie point of diode D2 and D3, the other end of high-frequency ac input terminal
It is connected with the tie point of diode D4 and D5, diode D2 cathode is connected with the cathode of diode D4, while the anode with output
It is connected, diode D3 anode is connected with the anode of diode D5, while being connected with the cathode of output.
As shown in fig. 7, control measuring unit includes system clock circuit, peripheral circuit, storage circuit, communicating circuit, electricity
Press measuring circuit, current measurement circuit, temperature measuring circuit and MCU, wherein communicating circuit is 485 communicating circuits, and MCU is used
C51 controls chip.Temperature measuring circuit, tension measuring circuit, current measurement circuit be respectively used to measurement power device temperature,
Voltage and current, liquid crystal display are used for the display of data, and for storing data, communicating circuit is used for and host computer for storage chip
It is attached.
Its course of work are as follows: be tested electric current, voltage using tension measuring circuit, current measurement circuit and temperature measuring circuit
It is transformed to 0~5V voltage value with temperature signal, and the voltage value signal of sampling is converted to by digital quantity by A/D conversion chip,
Real-time Transmission controls chip to C51, is handled using C51 control chip sampled signal, then by treated, data are shown
Show on LCD240128 liquid crystal display, while being transmitted to host computer through RS485 serial communication.
The working principle of system is as follows: system filters input power first with EMI filter circuit accordingly, filter
Except high frequency and harmonic component, the power supply signal is then entered into APF calibration of power circuit, is adjusted input voltage using the circuit
To DC200V~DC400V, the high power factor in system operation is realized.Followed by inverter circuit by above-mentioned direct current
Voltage is reverse into alternating voltage, and is arrived the alternating voltage amplitude adjusting that inverter circuit exports using subsequent high frequency transformer
AC50V~55V finally rectifies high-frequency ac voltage using rectification circuit, to obtain required DC voltage.
Stable output voltage in order to obtain, control measuring unit control APF calibration of power circuit and inverter circuit
System, for APF calibration of power circuit, then in input voltage transmission process, the APF calibration of power circuit according to set by circuit is defeated
Voltage value out carries out frequency modulation tune pulsewidth, such as APF when control measuring circuit acquisition to the control signal of APF calibration of power circuit
Calibration of power circuit output voltage is lower than set voltage, then Reverse Turning Control APF calibration of power circuit improves frequency and pulsewidth
Value, conversely, then reducing, so that APF calibration of power circuit output voltage be made to stablize in set definite value.
So stablizing APF calibration of power circuit output voltage set by the control to APF calibration of power circuit
On fixed voltage.
The output voltage of system is then adjusted by inverter circuit, exports electricity according to set by control measuring circuit
The size of pressure carries out frequency modulation tune pulsewidth, such as control measurement electricity to the control signal of inverter circuit by the measurement to output voltage
The system output voltage (i.e. rectification circuit finally export voltage) of road acquisition then improves inverter circuit lower than set voltage
Frequency and pwm value, conversely, then reduce, so that system output voltage be made to stablize in set definite value.
Simultaneously control measuring unit also to each power device (EMI filter circuit, APF calibration of power circuit, inverter circuit,
High frequency transformer and rectification circuit) operating parameter (voltage, electric current, temperature etc.) measured, and realize to output electric current
Closed-loop control.
As shown in figure 8, the present invention passes through the above-mentioned survey to each power device input voltage, electric current and output voltage, electric current
Amount, can calculate the loss power in power supply operational process, according to the relationship between device power loss and running temperature, together
When combination temperature measuring circuit measured by temperature information, in conjunction with power device loss and temperature rise characteristic curve, analyze power
The relationship of device loss and temperature rise, judges operative state, the automatic adjusting realized to output electric current.Work as operation
Temperature is lower than the corresponding temperature of power, then illustrate system can reliability service, conversely, then illustrate system there are the hidden danger of failure,
Power-supply system is set to be provided with warning function.In addition, for excessively high running temperature, the side for adjusting output electric current is can be used in system
Method, i.e. adjusting inverter circuit reduce output electric current (i.e. reduction output voltage) and reach the low-loss purpose of drop, to extend power supply
Service life.
Also, current Switching Power Supply is substantially constant-pressure type power supply, and control measuring circuit passes through to working voltage, electric current
Acquisition, and compared with set definite value, the pulsewidth and frequency for passing through the PWM of control output realize the constant current constant voltage fortune of system
Row, this power supply control the output voltage and electric current of power supply by software program realization, i.e., power supply can realize constant current constant voltage
Operation, between the two can seamless switching, i.e., according to payload size, when the output of electric current is not up to setting value, system carries out permanent
Pressure mode is run, and when load becomes larger, when electric current reaches setting value, then system is converted into constant current operational mode, makes the function of system
Rate device improves the reliability of power-supply system from the impact of overcurrent in short-circuit process.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of self-adaption switch electric power source characterized by comprising filter circuit, APF calibration of power circuit, inverter circuit, height
Frequency power transformer, rectification circuit and control measuring unit；Input power successively passes through the filter circuit, the APF calibration of power
Circuit, the inverter circuit, the high frequency transformer and rectification circuit output；
The filter circuit is filtered input power, filters out high frequency and harmonic component；
The APF calibration of power circuit will be through the filter circuit treated power supply signal is adjusted to DC voltage 200V~straight
Galvanic electricity presses 400V；
DC voltage is adjusted to high-frequency ac voltage by the inverter circuit；
The high frequency transformer is converted for voltage signal and power transmission；
The rectification circuit by ac voltage rectifier at corresponding DC output voltage, and by DC output voltage feedback to described
Control measuring unit；
The control measuring unit carries out frequency modulation tune pulse-width controlled to the APF calibration of power circuit and the inverter circuit.
2. a kind of self-adaption switch electric power source according to claim 1, which is characterized in that the filter circuit is EMI filtering
Circuit.
3. a kind of self-adaption switch electric power source according to claim 2, which is characterized in that the EMI filter circuit is capacitor
C1~C5 and with inductance L1~L4.
4. a kind of self-adaption switch electric power source according to claim 1, which is characterized in that the APF calibration of power circuit packet
Include one end and the one end the inductance L5 of capacitor C6, capacitor C7, diode D1, inductance L5 and MOSFET pipe M1, the capacitor C6
It is connected, the other end of the capacitor C6 is connected to the ground, the collector phase of the other end of the inductance L5 and the MOSFET pipe M1
Even, and it is connected with the forward direction of the diode D1, the emitter of the MOSFET pipe M1 is connected to the ground, the diode D1 cathode
It is connected with one end of the capacitor C7, the other end of the capacitor C7 is connected to the ground.
5. a kind of self-adaption switch electric power source according to claim 1, which is characterized in that the inverter circuit includes four
MOSFET pipe M2~M5, the collector of the MOSFET pipe M2 are connected with the collector of the MOSFET pipe M3, the MOSFET
The emitter of pipe M2 is connected with the collector of the MOSFET pipe M4, and the emitter and the MOSFET of the MOSFET pipe M3 is managed
The collector of M5 is connected, and the emitter of the emitter of the MOSFET pipe M4 and the MOSFET pipe M5 are connected to the ground.
6. a kind of self-adaption switch electric power source according to claim 1, which is characterized in that the rectification circuit includes high frequency two
Pole pipe D2~D5, the high-frequency diode D2 cathode are connected with the cathode of the high-frequency diode D4, the high-frequency diode D3
Anode be connected with the anode of the high-frequency diode D5.
7. a kind of self-adaption switch electric power source according to claim 1, which is characterized in that the control measuring unit includes temperature
Measuring circuit, tension measuring circuit, current measurement circuit, MCU, communicating circuit and liquid crystal display display circuit are spent, the temperature is surveyed
Measure circuit, the tension measuring circuit, the current measurement circuit, the communicating circuit and liquid crystal display display circuit difference
It is connect with the MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910550537.8A CN110277930A (en) | 2019-06-24 | 2019-06-24 | A kind of self-adaption switch electric power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910550537.8A CN110277930A (en) | 2019-06-24 | 2019-06-24 | A kind of self-adaption switch electric power source |
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| Publication Number | Publication Date |
|---|---|
| CN110277930A true CN110277930A (en) | 2019-09-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910550537.8A Pending CN110277930A (en) | 2019-06-24 | 2019-06-24 | A kind of self-adaption switch electric power source |
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|---|---|
| CN (1) | CN110277930A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022000248A1 (en) * | 2020-06-30 | 2022-01-06 | 华为数字能源技术有限公司 | Inverter, and inversion system and method |
| CN116191900A (en) * | 2023-02-28 | 2023-05-30 | 深圳海致洋科技有限公司 | Generator excitation system and high-power switch power supply thereof |
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| CN107733035A (en) * | 2017-11-06 | 2018-02-23 | 湖州升谱电子科技有限公司 | A kind of numerical-control direct-current charging pile |
| CN108879895A (en) * | 2018-06-20 | 2018-11-23 | 联合汽车电子有限公司 | Electric automobile energy transmission system and transmission method |
| CN109196769A (en) * | 2016-04-15 | 2019-01-11 | 艾默生环境优化技术有限公司 | For driving the driving circuit based on buck converter of the motor of compressor and condenser fan |
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| CN101465598A (en) * | 2009-01-08 | 2009-06-24 | 普天信息技术研究院有限公司 | AC/DC converter |
| CN109196769A (en) * | 2016-04-15 | 2019-01-11 | 艾默生环境优化技术有限公司 | For driving the driving circuit based on buck converter of the motor of compressor and condenser fan |
| CN107733035A (en) * | 2017-11-06 | 2018-02-23 | 湖州升谱电子科技有限公司 | A kind of numerical-control direct-current charging pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000248A1 (en) * | 2020-06-30 | 2022-01-06 | 华为数字能源技术有限公司 | Inverter, and inversion system and method |
| CN116191900A (en) * | 2023-02-28 | 2023-05-30 | 深圳海致洋科技有限公司 | Generator excitation system and high-power switch power supply thereof |
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