CN206099812U - Single -phase sinusoidal wave variable frequency power supply system - Google Patents
Single -phase sinusoidal wave variable frequency power supply system Download PDFInfo
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- CN206099812U CN206099812U CN201621190812.8U CN201621190812U CN206099812U CN 206099812 U CN206099812 U CN 206099812U CN 201621190812 U CN201621190812 U CN 201621190812U CN 206099812 U CN206099812 U CN 206099812U
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Abstract
The utility model relates to a power technology, in particular to single -phase sinusoidal wave variable frequency power supply system, do you including system's direct -current input end and system output end, still include DC DC conversion systems, DC AC conversion systems, control system, auxiliary power supply system and protection system, DC DC conversion systems, DC is the AC conversion systems series connection at system's direct -current input end, DC AC conversion systems output is as the system output end, does control system connect DC respectively DC conversion systems, DC AC conversion systems and system output end, auxiliary power supply system is connected system direct -current input end, protection system, DC respectively DC conversion systems, DC AC conversion systems and control system, protection system is connected system direct -current input end and control system respectively. Is this electrical power generating system frequency 20 100Hz within range accessible button is step -by -step or freely set for to show through LCD that screen display shows output sine wave's voltage, electric current, frequency. Load regulation, voltage regulation all are less than 0.2%, system efficiency and reach 92.3%. Friendly human -computer interaction has, the superior performance, and operating condition is stable.
Description
Technical field
The utility model belongs to power technique fields, more particularly to a kind of single-phase sine wave frequency-converting power supply.
Background technology
Inverter is the device that a kind of employing Power Electronic Technique carries out transformation of electrical energy, and it is obtained from AC or DC input
The exchange output of voltage stabilizing is obtained, for AC load electricity consumption.The purposes of inverter mainly has：1. in mobile power supply place or without electric ground
Area, with other generating equipments（Solar energy, wind energy, water energy and various fuel generators）Or direct current（Battery, switch electricity
Source, fuel cell etc.）Together, reliable and stable AC power is provided the user；2. as communication, the uninterrupted electricity of power system
Source；3. as fire-fighting emergent power supply；4. portable power supplies are utilized, interim AC power etc. is provided.In modern production, energy-conservation
Reduction of discharging, synergy of guaranteeing the quality, scientific development, the actual requirement of sustainable development are in the urgent need to inversion transformation technique is in increasing field
Wave more extensive effect.Therefore, it is highly desirable to develop a kind of single-phase sine wave frequency changing power device, to adapt to different occasions
Power demands, wherein power input can be direct-flow storage battery, the flexibility and mobility so as to strengthening system.
From in terms of principle angle, at present inverter relatively common on the market has traditional inverter and digital inversion electricity
Source.The transformer of conventional inverter uses common silicon steel sheet coiling, and consumptive material is more, heavy and efficiency is low, and waste of energy is serious, output
Spread of voltage, is easily damaged electrical equipment；Without all kinds of short-circuit protections and under-voltage protection, easily cause in inverter power output pipe and
Battery burns.Digital inverter is practical product of the computer technology in combination with power technology, using switch
Power source design, efficiency high, flexibility are good, but some do not include adjustable output frequency, real-time monitoring output voltage electric current, excessively stream and protect
The function such as shield and self- recoverage, man-machine interaction effect is poor.
From in terms of waveform angle, the square-wave inverter output of presence on the market at present is second-rate, easily causes acutely not
Stabilizing influence, carrying load ability is poor, it is impossible to band inductive load.
Utility model content
The purpose of this utility model is to propose a kind of energy input dc power, and output provides high-quality alternating current, efficiency high, makes an uproar
Sound is little, with all kinds of protections and self-recovering function, the middle low power sine-wave inverter that flexibility is strong, man-machine interaction is good.
For achieving the above object, the technical solution adopted in the utility model is：A kind of single-phase sine wave frequency-converting power supply,
Including system dc input and system output, also including DC-DC transformation systems, DC-AC transformation systems, control system, auxiliary
Help power-supply system and protection system；DC-DC transformation systems, DC-AC transformation systems are connected in series in system dc input, DC-
AC transformation systems are exported as system output；Control system connects respectively DC-DC transformation systems, DC-AC transformation systems and is
System output end；Secondary power system difference connection system direct-flow input end, protection system, DC-DC transformation systems, DC-AC conversion
System and control system；Protection system distinguishes connection system direct-flow input end and control system.
In above-mentioned single-phase sine wave frequency-converting power supply, DC-DC transformation systems include inductance, diode, switching tube
And its driving chip and filter capacitor；Inductance one end is connected to system dc input, is connected with input filter capacitor positive pole, separately
One end drains with the switching tube of switching tube and its driving chip and diode anode is connected；The switch of switching tube and its driving chip
Pipe drain electrode connection inductance and diode anode；Grid Jing resistance connects driving chip delivery outlet, source ground, between grid, source electrode
Connection bleeder resistance；Driving chip VDD pins connect secondary power system, INA pin connection control systems；Diode cathode connects
Filter capacitor positive pole is connect as the direct voltage output of DC-DC transformation systems, is connected with DC-AC transformation systems；Filter capacitor is born
Pole is grounded.
In above-mentioned single-phase sine wave frequency-converting power supply, inductance adopts E type inductance, from the magnetic core of EE55 models；
Diode uses Schottky diode MBR10100CT；The switching tube of switching tube and its driving chip selects CSD19536, drives
Chip selects UCC27524, and filter capacitor is using 1 electrochemical capacitor in parallel and 2 ceramic disc capacitors.
In above-mentioned single-phase sine wave frequency-converting power supply, DC-AC transformation systems include that full bridge inverter and LC are filtered
Wave circuit, full bridge inverter, LC filter circuits are connected in series in after the direct voltage output of DC-DC transformation systems.
In above-mentioned single-phase sine wave frequency-converting power supply, full bridge inverter includes the first half-bridge driven chip
IRS21867, the second half-bridge driven chip IRS21867, the first high-power switchgear pipe CSD19536, the second high-power switchgear pipe
CSD19536, the 3rd high-power switchgear pipe CSD19536, the 4th high-power switchgear pipe CSD19536 and peripheral circuit, using bipolar
Property SPWM modulation systems；LC filter circuits are included using the E types inductance and CBB electric capacity series connection of EE55 magnetic cores.
In above-mentioned single-phase sine wave frequency-converting power supply, control system includes single-chip microcomputer, voltage transformer circuit, electricity
Current transformer circuit, AD sample circuits, matrix keyboard and LCD liquid crystal display screen；Single-chip microcomputer is used as control core, voltage transformer
Circuit, current transformer circuit are connected in series in respectively system output, matrix keyboard and LCD liquid crystal displays with AD sample circuits
Screen is connected to SCM peripheral.
In above-mentioned single-phase sine wave frequency-converting power supply, single-chip microcomputer carries LCD liquid using MSP430F5529, selection
The MSP-EXP430F5529 USB brassboards of crystal display screen；Matrix keyboard selects 4 × 4 matrix keyboards, voltage transformer model
TV1013, current transformer model TA1013；AD sample circuits include AD sampling A/D chips, reference voltage chip and linear voltage stabilization
Device；AD sampling A/D chips adopt 14 4 passages, high-precision TLC3574, reference voltage chip to adopt REF5040, linear voltage regulator
Using LM1117.
In above-mentioned single-phase sine wave frequency-converting power supply, secondary power system includes that+12V power supply circuits ,+5V are powered
Circuit and -5V power supply circuits；+ 12V power supply circuits are connected in series in system dc input ,+5V power supply circuits and -5V power supply circuits
After being connected in series in+12V power supplies respectively.
In above-mentioned single-phase sine wave frequency-converting power supply ,+12V power supply circuits are to be taken using step-down chip TPS54160
The BUCK circuits built ,+5V power supply circuits are the BUCK circuits built using step-down chip TPS54340, and -5V power supply circuits are to make
The BUCK-BOOST circuits built with step-down chip TPS54340.
In above-mentioned single-phase sine wave frequency-converting power supply, protection system includes triode, light emitting diode and relay
Device circuit；Relay circuit is arranged in system dc input.The control end of protection system is connected to after single-chip I/O mouth, and
By resistance connecting triode base stage.
The workflow of above-mentioned single-phase sine wave frequency-converting power supply：With booster circuit and full bridge inverter as core,
DC-DC conversion and DC-AC conversion are respectively completed, using single-chip microcomputer MSP430F5529 PWM ripples are produced, the control of Jing driving chips rises
Volt circuit breaker in middle pipe break-make, produces galvanic current pressure as full bridge inverter input voltage；SPWM ripples are produced simultaneously,
Jing driving chips drive full bridge inverter, Jing LC filtering to produce the sine wave of frequency-adjustable.Using closed loop feedback system, pass through
Pid algorithm adjusts SPWM ripple modulation ratios, so as to stablizing for controlled output voltage.
The beneficial effects of the utility model：Can sine wave output form quality amount is good, frequency-adjustable alternating current, adjustment of load
Rate, voltage regulation factor are respectively less than 0.2%, and system effectiveness reaches 92.3%.The power-supply system frequency can lead in the range of 20-100Hz
Cross button stepping or freely set, and by the voltage of LCD display display output sine wave, electric current, frequency.Its efficiency high,
Noise is little, with all kinds of protections and self-recovering function, flexibility is strong, superior performance, multiple functional, working stability, man-machine interaction
It is friendly.
Description of the drawings
Fig. 1 is the structured flowchart of the utility model one embodiment；
Fig. 2 is the utility model one embodiment DC-DC transformation system circuit diagram；
Fig. 3 is the utility model one embodiment DC-AC transformation system circuit diagram；
Fig. 4（a）, Fig. 4（b）For the utility model one embodiment control system circuit figure；
Fig. 5（a）, Fig. 5（b）For the utility model one embodiment secondary power system circuit diagram；
Fig. 6 is the utility model one embodiment protection system circuit diagram.
Specific embodiment
Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
The example of the embodiment is shown in the drawings, wherein from start to finish same or similar label represents identical or class
As element or the element with same or like function.Below with reference to Description of Drawings embodiment be it is exemplary, only
For explaining the utility model, and can not be construed to restriction of the present utility model.
Following disclosure provides many different embodiments or example is used for realizing different structure of the present utility model.For
Simplification disclosure of the present utility model, is hereinafter described to the part and setting of specific examples.They are only merely illustrative, and
And purpose does not lie in restriction the utility model.Additionally, the utility model can in different examples repeat reference numerals and/or word
It is female.This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or arranging
Relation.Additionally, the utility model provides the example of various specific techniques and material, but those of ordinary skill in the art can
To recognize the applicability of other techniques and/or the use of other materials.In addition, fisrt feature described below is special second
Levy it " on " structure can include that the first and second features be formed as the embodiment of directly contact, it is also possible to including other spy
The embodiment being formed between the first and second features is levied, such first and second feature may not be directly contact.
In description of the present utility model, it should be noted that unless otherwise prescribed and limit, term " connected " " connection " answer
It is interpreted broadly, can is direct for example, it may be being mechanically connected or electrical connection, or the connection of two element internals
It is connected, it is also possible to be indirectly connected to by intermediary, for the those of ordinary skill in phase field, can be as the case may be
Understand the concrete meaning of above-mentioned term.
The technical scheme that the present embodiment is adopted is as follows：A kind of single-phase sine wave frequency-converting power supply, including system dc is defeated
Enter end and system output, also including DC-DC transformation systems, DC-AC transformation systems, control system, secondary power system and guarantor
Protecting system；DC-DC transformation systems, DC-AC transformation systems are connected in series in system dc input, the output of DC-AC transformation systems
As system output；Control system connects respectively DC-DC transformation systems, DC-AC transformation systems and system output；Auxiliary electricity
Origin system difference connection system direct-flow input end, protection system, DC-DC transformation systems, DC-AC transformation systems and control system；
Protection system distinguishes connection system direct-flow input end and control system.
Further, DC-DC transformation systems include inductance, diode, switching tube and its driving chip and filter capacitor；Inductance
One end is connected to system dc input, is connected with input filter capacitor positive pole, the other end and switching tube and its driving chip
Switching tube drains and diode anode connection；The switching tube drain electrode connection inductance and diode sun of switching tube and its driving chip
Pole；Grid Jing resistance connects driving chip delivery outlet, and source ground connects bleeder resistance between grid, source electrode；Driving chip VDD
Pin connects secondary power system, INA pin connection control systems；Diode cathode connects filter capacitor positive pole as DC-DC
The direct voltage output of transformation system, is connected with DC-AC transformation systems；Filter capacitor minus earth.
Further, inductance adopts E type inductance, from the magnetic core of EE55 models；Diode uses Schottky diode
MBR10100CT；The switching tube of switching tube and its driving chip selects CSD19536, driving chip to select UCC27524, filtered electrical
Hold using 1 electrochemical capacitor in parallel and 2 ceramic disc capacitors.
Further, DC-AC transformation systems include full bridge inverter and LC filter circuits, full bridge inverter, LC filtering
Circuit connected in series is connected to after the direct voltage output of DC-DC transformation systems.
Further, full bridge inverter includes the first half-bridge driven chip IRS21867, the second half-bridge driven chip
IRS21867, the first high-power switchgear pipe CSD19536, the second high-power switchgear pipe CSD19536, the 3rd high-power switchgear pipe
CSD19536, the 4th high-power switchgear pipe CSD19536 and peripheral circuit, using bipolar SPWM modulation system；LC filter circuits
Including the E types inductance and CBB electric capacity series connection using EE55 magnetic cores.
Further, control system includes single-chip microcomputer, voltage transformer circuit, current transformer circuit, AD sample circuits, square
Battle array keyboard and LCD liquid crystal display screen；Single-chip microcomputer as control core, voltage transformer circuit, current transformer circuit respectively and
AD sample circuits are connected in series in system output, and matrix keyboard is connected to SCM peripheral with LCD liquid crystal display screen.
Further, single-chip microcomputer is using MSP430F5529, from the MSP-EXP430F5529 for carrying LCD liquid crystal display screen
USB brassboards；Matrix keyboard selects 4 × 4 matrix keyboards, voltage transformer model TV1013, current transformer model
TA1013；AD sample circuits include AD sampling A/D chips, reference voltage chip and linear voltage regulator；AD sampling A/D chips adopt 14 4
Passage, high-precision TLC3574, reference voltage chip adopts REF5040, linear voltage regulator to adopt LM1117.
Further, secondary power system includes+12V power supply circuits ,+5V power supply circuits and -5V power supply circuits；+ 12V powers
Circuit connected in series is connected to system dc input ,+5V power supply circuits and -5V power supply circuits be connected in series in respectively+12V power supplies it
Afterwards.
Further ,+12V power supply circuits are the BUCK circuits built using step-down chip TPS54160, and+5V power supply circuits are
The BUCK circuits built using step-down chip TPS54340, -5V power supply circuits are built using step-down chip TPS54340
BUCK-BOOST circuits.
Further, protection system includes triode, light emitting diode and relay circuit；Relay circuit is arranged in and is
System direct-flow input end.The control end of protection system is connected to after single-chip I/O mouth, and by resistance connecting triode base stage.
As shown in figure 1, a kind of single-phase sine wave frequency-converting power supply when being embodied as, including：DC-DC transformation systems 1,
DC-AC transformation systems 2, control system 3, secondary power system 4 and protection system 5.DC-DC transformation systems 1, DC-AC transformation series
System 2 is connected in series in input dc power potential source, and DC-AC transformation systems 2 are exported as system output, control system 3, accessory power supply
System 4 and protection system 5 are used as periphery.
As shown in Fig. 2 DC-DC transformation systems 1 include inductance 11, diode 12, switching tube and its driving chip 13 and filter
Ripple electric capacity 14.The one end of inductance 11 is connected to after system dc power supply, is connected with input filter capacitor positive pole, the other end with open
Close pipe and its drain electrode of the breaker in middle pipe of driving chip 13 and the connection of the anode of diode 12.In switching tube and its driving chip 13, switch
The pipe drain electrode connection inductance 11 and anode of diode 12, grid Jing resistance connection driving chip delivery outlet, source ground, grid source electrode it
Between connect bleeder resistance, the output end of 12V power supply circuits 41 in driving chip VDD pins connection secondary power system 4, VDD draws
Connect decoupling capacitor between pin and ground, be input into the PWM ripples output of the INA pins of PWM ripple signals and single-chip microcomputer 31 in control system 3
Mouth connection.The anode of diode 12 connection inductance 11 is not connected to one end of input power and switching tube drain electrode, negative electrode connection filtered electrical
Hold 14 positive poles as the direct voltage output of DC-DC transformation systems, be connected with DC-AC transformation systems 2.Filter capacitor 14 is included simultaneously
1 electrochemical capacitor and 2 ceramic disc capacitors of connection, the negative electrode of electrochemical capacitor cathode connecting diode 12, minus earth.
As shown in figure 3, DC-AC transformation systems 2 include full bridge inverter 21, LC filter circuits 22.Full bridge inverter
21 by half-bridge driven chip the first half-bridge driven chip IRS21867 2101, the second half-bridge driven chip IRS21867 2102,
High-power switchgear pipe the first high-power switchgear pipe CSD19536 2103, the second high-power switchgear pipe CSD19536 the 2104, the 3rd
High-power switchgear pipe CSD19536 2105, the 4th high-power switchgear pipe CSD19536 2106 and peripheral circuit are constituted.The first half
The parallel connection of VCC ends and the accessory power supply system of bridge driving chip IRS21867 2101 and the second half-bridge driven chip IRS21867 2102
System 4 in 12V power supply circuits 41 output end connection, COM ends respectively with lower edge switch pipe the second high-power switchgear pipe CSD19536
2104th, the source electrode connection of the 4th high-power switchgear pipe CSD19536 2106, and be all connected to systematically, LIN ends and HIN ends are divided
Do not connect, and be connected with two SPWM ripple delivery outlets of control system 3 respectively, VB ends and bootstrap capacitor one end and bootstrap diode
Negative electrode connect, HO ends by drive resistance respectively with high side switches pipe the first high-power switchgear pipe CSD19536 2103 and the 3rd
High-power switchgear pipe CSD19536 2105 grid connection, LO ends by drive resistance respectively with the Gao Gong of lower edge switch pipe second
The grid connection of rate switching tube CSD19536 2104 and the 4th high-power switchgear pipe CSD19536 2106.High side switches pipe first
The source electrode of high-power switchgear pipe CSD19536 2103 and the leakage of lower edge switch pipe the second high-power switchgear pipe CSD19536 2104
Pole connects, and is connected with the other end of bootstrap capacitor.The source electrode of the high-power switchgear pipe CSD19536 2105 of high side switches pipe the 3rd
It is connected with the drain electrode of the high-power switchgear pipe CSD19536 2106 of lower edge switch pipe the 4th, and is connected with the other end of bootstrap capacitor.
High-power switchgear pipe the first high-power switchgear pipe CSD19536 2103, the second high-power switchgear pipe CSD19536 the 2104, the 3rd
Connect between the grid source electrode of high-power switchgear pipe CSD19536 2105 and the 4th high-power switchgear pipe CSD19536 2106 and release
Resistance.High side switches pipe the first high-power switchgear pipe CSD19536's 2103 and the 3rd high-power switchgear pipe CSD19536 2105
Drain electrode is connected with DC voltage output end in DC-DC transformation systems 1.The output end voltage of full bridge inverter 21 be bipolarity,
SPWM ripple of the pulsewidth in sinusoidal rule change, by LC filter circuits 22 higher hamonic wave is filtered off, and obtains low-frequency sinusoidal AC electricity.
LC inverter circuits 22 are composed in series by E shapes inductance and CBB electric capacity, and two inputs of LC inverter circuits 22 are connected to first
The drain connections of the source electrode of high-power switchgear pipe CSD19536 2103 and the second high-power switchgear pipe CSD19536 2104 and
The source electrode of the 3rd high-power switchgear pipe CSD19536 2105 is connected with the drain electrode of the 4th high-power switchgear pipe CSD19536 2106
Place.Two output ends of LC inverter circuits 22 are the AC power source of sine wave output end of system.
Such as Fig. 4（a）, shown in Fig. 4 (b), control system 3 includes single-chip microcomputer MSP430F5529 31, LCD liquid crystal display screen
32nd, matrix keyboard 33, voltage transformer circuit 34, current transformer circuit 35, AD sampling A/D chips TLC3574 36, voltage reference
Chip REF5040 37, linear voltage regulator LM1117 38 are constituted.Such as Fig. 4（a）Shown, LCD liquid crystal display screen 32 is single-chip microcomputer
MSP430F5529 31 is carried, and matrix keyboard 33 is connected to 8 of single-chip microcomputer 31 to be had on the I/O port of interrupt function, is swept by row
Retouch method to obtain button value and process in heart single-chip microcomputer 31 in the controlling.One SPWM ripples delivery outlet of single-chip microcomputer 31 and DC-AC
High side switches pipe the first high-power switchgear pipe CSD19536 2103, the 3rd high-power switchgear pipe CSD19536 in transformation system 2
2105 grid connection, another SPWM ripples delivery outlet and lower edge switch pipe the second high-power switchgear pipe in DC-AC transformation systems 2
The grid connection of CSD19536 2104, the 4th high-power switchgear pipe CSD19536 2106, realizes double in sinewave inverter
Polarity S PWM, PWM ripples delivery outlet and DC-DC transformation system breaker in middle pipes and its signal input INA pin of driving chip 13
Connection.Voltage transformer circuit 34, current transformer circuit 35 are connected to system output rear class, and big voltage, electric current are changed into being available for
The voltage signal of A/D chip sampling is simultaneously filtered to signal, makes sampling accurate.Voltage transformer circuit 34, current transformer electricity
The positive power source terminal of amplifier is connected with the output of+5V power supply circuits 42 of secondary power system 4 in road 35, and negative power end is electric with auxiliary
The output connection of -5V power supply circuits 43 of origin system 4.Such as Fig. 4（b）It is shown, SCLK, SDI, SDO, CS end of AD sampling A/D chips 36
It is connected with UCB0CLK, UCB0SIMO, UCB0SOMI and arbitrary I/O port of single-chip microcomputer 31 respectively.REFP ends and voltage reference 37
Output end connects, and DVDD ends are connected with the output of linear voltage regulator 38.The input of linear voltage regulator 38 and secondary power system 4
+ 5V power supplys output 42 connect.With single-chip microcomputer 31 as control core, control high-speed AD sampling, real-time monitoring is exported software section
Alternating voltage, electric current, and control LCD and show.Control system 3 is digital feedback system, and by pid algorithm SPWM ripples are constantly adjusted
Modulation ratio, makes the effective value stabilization of output voltage in 36V, and when output current is more than 2.5A, with triode 51 in protection system 5
The I/O port output high level of base stage connection, control relay disconnects prime input, realizes overcurrent protection, meanwhile, read just by adjustment
The speed adjustment sine wave output frequency of string wave table.
Such as Fig. 5（a）, Fig. 5（b）Shown, secondary power system 4 is supplied by 12V power supply circuits 41 ,+5V power supply circuits 42, -5V
Circuit 43 is constituted.Such as Fig. 5（a）Shown, 12V power supply circuits 41 are connected on system dc voltage input end, using step-down chip
The BUCK circuits that TPS54160 builds obtain 12V dc sources.+ 5V power supply circuits 42 are connected on the rear class of 12V power supply circuits 41, use
The BUCK circuits that step-down chip TPS54340 builds obtain 5V dc sources.Such as Fig. 5（b）It is shown, -5V power supply circuits 43 and+5V
Power supply circuits 42 are simultaneously connected in the rear class of 12V power supply circuits 41, the BUCK-BOOST circuits built using step-down chip TPS54340
Obtain -5V dc sources.
As shown in fig. 6, protection system 5 includes triode 51, the pin relay 53 of light emitting diode 52 and five.Triode 51
Base stage is connected by resistance with arbitrary I/O port of single-chip microcomputer 31 in control system 3, grounded emitter, colelctor electrode and diode 52
One end connection of anode and the coil of relay 53, the negative electrode of diode 52 is connected with the other end of the coil of relay 53.Relay
53 normal-closed end is connected to the input of DC power supply in DC-DC transformation systems 1.When output current exceedes over-current protection point
When, single-chip I/O mouth output high level, control relay disconnects prime input, overcurrent protection is realized, while light emitting diode 52
Light, represent that system enters overcurrent protection state.
The present embodiment can be realized：Input direct voltage 24V, the single-phase sine wave of output voltage virtual value 36V is specified
Fully loaded power output 72W, frequency can set by button stepping or freely in the range of 20-100Hz, and by LCD display
The voltage of display output sine wave, electric current, frequency.Load regulation, voltage regulation factor are respectively less than 0.2%, and system effectiveness reaches
92.3%.Its overall performance is superior, multiple functional, stable working state, and man-machine interaction is friendly.
It should be appreciated that the part that this specification is not elaborated belongs to prior art.
Although the specific embodiment of the present utility model above in association with Description of Drawings, those of ordinary skill in the art
It should be appreciated that these are merely illustrative of, various deformation or modification can be made to these embodiments, without departing from this practicality
New principle and essence.Scope of the present utility model is only limited by the claims that follow.
Claims (10)
1. a kind of single-phase sine wave frequency-converting power supply, including system dc input and system output, it is characterised in that also
Including DC-DC transformation systems, DC-AC transformation systems, control system, secondary power system and protection system；DC-DC transformation series
System, DC-AC transformation systems are connected in series in system dc input, and DC-AC transformation systems are exported as system output；Control
System connects respectively DC-DC transformation systems, DC-AC transformation systems and system output；Secondary power system distinguishes connection system
Direct-flow input end, protection system, DC-DC transformation systems, DC-AC transformation systems and control system；Protection system connects respectively
System direct-flow input end and control system.
2. single-phase sine wave frequency-converting power supply as claimed in claim 1, it is characterised in that DC-DC transformation systems include electricity
Sense, diode, switching tube and its driving chip and filter capacitor；Inductance one end is connected to system dc input, with input filter
Ripple capacitance cathode connects, and the other end drains with the switching tube of switching tube and its driving chip and diode anode is connected；Switching tube
And its switching tube drain electrode connection inductance and diode anode of driving chip；Grid Jing resistance connects driving chip delivery outlet, source
Pole is grounded, and bleeder resistance is connected between grid, source electrode；Driving chip VDD pins connect secondary power system, the connection control of INA pins
System processed；Diode cathode connects filter capacitor positive pole as the direct voltage output of DC-DC transformation systems, with DC-AC conversion
System connects；Filter capacitor minus earth.
3. single-phase sine wave frequency-converting power supply as claimed in claim 2, it is characterised in that inductance adopts E type inductance, selects
The magnetic core of EE55 models；Diode uses Schottky diode MBR10100CT；The switching tube choosing of switching tube and its driving chip
With CSD19536, driving chip selects UCC27524, and filter capacitor is using 1 electrochemical capacitor in parallel and 2 ceramic disc capacitors.
4. single-phase sine wave frequency-converting power supply as claimed in claim 1, it is characterised in that DC-AC transformation systems include complete
Bridge inverter circuit and LC filter circuits, full bridge inverter, LC filter circuits are connected in series in the direct current of DC-DC transformation systems
After pressure output.
5. single-phase sine wave frequency-converting power supply as claimed in claim 4, it is characterised in that full bridge inverter includes first
Half-bridge driven chip IRS21867, the second half-bridge driven chip IRS21867 are the first high-power switchgear pipe CSD19536, second high
Power switch pipe CSD19536, the 3rd high-power switchgear pipe CSD19536, the 4th high-power switchgear pipe CSD19536 and periphery electricity
Road, using bipolar SPWM modulation system；LC filter circuits are included using the E types inductance and CBB electric capacity series connection of EE55 magnetic cores.
6. single-phase sine wave frequency-converting power supply as claimed in claim 1, it is characterised in that control system include single-chip microcomputer,
Voltage transformer circuit, current transformer circuit, AD sample circuits, matrix keyboard and LCD liquid crystal display screen；Single-chip microcomputer is used as control
Core processed, voltage transformer circuit, current transformer circuit are connected in series in system output, matrix with AD sample circuits respectively
Keyboard is connected to SCM peripheral with LCD liquid crystal display screen.
7. single-phase sine wave frequency-converting power supply as claimed in claim 6, it is characterised in that single-chip microcomputer is adopted
MSP430F5529, selection carry the MSP-EXP430F5529 USB brassboards of LCD liquid crystal display screen；Matrix keyboard selects 4 × 4
Matrix keyboard, voltage transformer model TV1013, current transformer model TA1013；AD sample circuits include AD sampling cores
Piece, reference voltage chip and linear voltage regulator；AD sampling A/D chips adopt 14 4 passages, high-precision TLC3574, reference voltage
Chip adopts REF5040, linear voltage regulator to adopt LM1117.
8. single-phase sine wave frequency-converting power supply as claimed in claim 1, it is characterised in that secondary power system includes+12V
Power supply circuits ,+5V power supply circuits and -5V power supply circuits；+ 12V power supply circuits are connected in series in system dc input, and+5V powers
Circuit and -5V power supply circuits are connected in series in respectively after+12V power supplies.
9. single-phase sine wave frequency-converting power supply as claimed in claim 8, it is characterised in that+12V power supply circuits are using drop
The pressure BUCK circuits built of chip TPS54160 ,+5V power supply circuits are that the BUCK built using step-down chip TPS54340 is electric
Road, -5V power supply circuits are the BUCK-BOOST circuits built using step-down chip TPS54340.
10. single-phase sine wave frequency-converting power supply as claimed in claim 6, it is characterised in that protection system include triode,
Light emitting diode and relay circuit；Relay circuit is arranged in system dc input, and the control end of protection system is connected to
After single-chip I/O mouth, and by resistance connecting triode base stage.
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| CN201621190812.8U CN206099812U (en) | 2016-10-28 | 2016-10-28 | Single -phase sinusoidal wave variable frequency power supply system |
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| CN201621190812.8U CN206099812U (en) | 2016-10-28 | 2016-10-28 | Single -phase sinusoidal wave variable frequency power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024912A (en) * | 2017-05-04 | 2017-08-08 | 安徽庆恒信息科技有限公司 | Intelligent home control system |
| CN112214001A (en) * | 2019-07-11 | 2021-01-12 | 株洲中车时代电气股份有限公司 | Control system testing method and storage medium |
-
2016
- 2016-10-28 CN CN201621190812.8U patent/CN206099812U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024912A (en) * | 2017-05-04 | 2017-08-08 | 安徽庆恒信息科技有限公司 | Intelligent home control system |
| CN112214001A (en) * | 2019-07-11 | 2021-01-12 | 株洲中车时代电气股份有限公司 | Control system testing method and storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee |