CN105162348A - STM32-based high-performance all-digital sine wave inverter power supply - Google Patents
STM32-based high-performance all-digital sine wave inverter power supply Download PDFInfo
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- CN105162348A CN105162348A CN201510537108.9A CN201510537108A CN105162348A CN 105162348 A CN105162348 A CN 105162348A CN 201510537108 A CN201510537108 A CN 201510537108A CN 105162348 A CN105162348 A CN 105162348A
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Abstract
The invention discloses STM32-based high-performance all-digital sine wave inverter power supply, which comprises a direct-current push-pull boost-up circuit, a sine inverter circuit, an output filter circuit, a drive circuit, a sampling circuit, a microcontroller module, lattice liquid crystal and an auxiliary power supply module. According to the STM32-based high-performance all-digital sine wave inverter power supply, the input direct-current is boosted to about 350V bus voltage by the push-pull boost-up circuit by a front stage; a full-bridge inverter circuit is adopted by a rear stage; inverter bridge output is filtered through a filter; voltage sampling is carried out with an isolation transformer; and current sampling is carried out by a current transformer, so that the stability of output of the power supply is increased by forming a feedback link.
Description
Technical field
The present invention relates to a kind of sine-wave inverter system, particularly relate to a kind of based on STM32 High-Performance Digital formula sine-wave inverter, belong to power detecting control field.
Background technology
Inverter is exactly a kind of electronic equipment low-voltage DC being changed into 220 volts of alternating currents.Because 220 volts of AC rectification are normally become direct current to use by us, and the effect of inverter in contrast, therefore gains the name.Sine-wave inverter is divided into several, from square wave rectangular wave very nearly the same to relatively sinusoidal wave fillet trapezoid ripple.Here only discuss rectangular wave, and this is also the waveform that current most of commercially available high-frequency inverter can provide.This kind of sine-wave inverter can be applicable to notebook computer, television set, Combined sound, video camera, digital camera, printer, various charger, the upper brain of palm electricity, game machine, video disc player, mobile DVD, family expenses therapeutic equipment etc., and the inverter that power output is larger can also be applied to small electrothermal utensil as hair drier, electric cup, kitchen appliance etc.But to inductive load electric appliances as refrigerator, electric drill etc. then should not use sine-wave inverter to power for a long time.Otherwise, may cause inverter and associated appliance product and damage or shorten expected service life.If inductive load must be used, advise the sine-wave inverter selecting reserve capacity larger.
Such as application number is " 201010562505.9 " a kind of wind light mutual complementing sine-wave inverter, inverter control circuit comprises power line, civil power sampling and shaping circuit, PLC chip and PLC peripheral circuit, microprocessor, reference sinusoidal signal generator, voltage regulator, Drive and Control Circuit, output voltage sampling circuit and summing circuit, civil power sampling and shaping circuit are connected with load, civil power sampling and shaping circuit are connected with reference sinusoidal signal generator by microprocessor, reference sinusoidal signal generator is connected with Drive and Control Circuit by voltage regulator, and Drive and Control Circuit is connected with inverter circuit, PLC chip and PKLC peripheral circuit and power line are bi-directionally connected, PLC chip and PLC peripheral circuit and microprocessor are bi-directionally connected, microprocessor is connected with summing circuit, the output voltage sampling circuit be connected with inverter circuit is connected summing circuit, summing circuit is connected with voltage regulator.The present invention is without the need to signal interconnection line, and communication anti-interference capability is strong, and reliability is high.
And for example application number is the inverter of a kind of sinewave output of " 201310353180.7 ", which comprises at least: direct current pressure side, H-bridge inverter circuit and control circuit, H-bridge inverter circuit comprises four power tube Q1 ~ Q4 and four diode D1 ~ D4, four power tube Q1 ~ Q4 adopt IGBT pipe, wherein Q1 and Q2 is as upper half-bridge circuit, Q3 and Q4 is as lower half-bridge circuit, two IGBT pipe collectors of upper half-bridge circuit connect positive source, the IGBT pipe Q1 of upper half-bridge circuit and Q2 emitter are electrically connected respectively with the IGBT pipe Q3 of lower half-bridge circuit and Q4 collector electrode respectively, the electric connection point of Q1 and Q3 is just extremely electrically connected with transformer T respectively with the electric connection point of Q2 and Q3, the IGBT pipe Q3 of lower half-bridge circuit and Q4 emitter connect power supply ground.This invention is a kind of safe and reliable, the inverter of the sinewave output that property is high.
Summary of the invention
Technical problem to be solved by this invention be provide for the deficiency of background technology a kind of based on STM32 High-Performance Digital formula sine-wave inverter.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of based on STM32 High-Performance Digital formula sine-wave inverter, comprise DC push-pull booster circuit, sine-converter circuit, output filter circuit, drive circuit, sample circuit, micro controller module, lattice lcd and auxiliary power module, wherein, described DC push-pull booster circuit, sine-converter circuit, output filter circuit connects successively, the output of described drive circuit respectively with DC push-pull booster circuit, the input of sine-converter circuit connects, the input of described sample circuit respectively with DC push-pull booster circuit, sine-converter circuit, the output of output filter circuit connects, the output of described sample circuit connects the input of micro controller module, the output of described micro controller module connects the input of drive circuit and lattice lcd respectively, the output of described auxiliary power module connects the input of drive circuit, sample circuit, micro controller module and lattice lcd respectively.
As a kind of further preferred version based on STM32 High-Performance Digital formula sine-wave inverter of the present invention, described micro controller module adopts STM32F103VE Strong MCU.
As a kind of further preferred version based on STM32 High-Performance Digital formula sine-wave inverter of the present invention, the chip model of described lattice lcd is LPH7366.
As a kind of further preferred version based on STM32 High-Performance Digital formula sine-wave inverter of the present invention, the chip model of described drive circuit is TLP250.
As a kind of further preferred version based on STM32 High-Performance Digital formula sine-wave inverter of the present invention, described sample circuit adopts current transformer and voltage transformer.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, prime of the present invention adopts and recommends the busbar voltage that the direct current of input is boosted to about 350V by booster circuit, rear class adopts full bridge inverter, inverter bridge exports after filter filtering, voltage sample is carried out with isolating transformer, current transformer carries out current sample, to form feedback element, increase the stability that power supply exports;
2, the repertoire of power supply of the present invention is realized by Single-chip Controlling, and have output voltage, frequency stabilization, efficiency is high, and defencive function is complete.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of based on STM32 High-Performance Digital formula sine-wave inverter, comprise DC push-pull booster circuit, sine-converter circuit, output filter circuit, drive circuit, sample circuit, micro controller module, lattice lcd and auxiliary power module, wherein, described DC push-pull booster circuit, sine-converter circuit, output filter circuit connects successively, the output of described drive circuit respectively with DC push-pull booster circuit, the input of sine-converter circuit connects, the input of described sample circuit respectively with DC push-pull booster circuit, sine-converter circuit, the output of output filter circuit connects, the output of described sample circuit connects the input of micro controller module, the output of described micro controller module connects the input of drive circuit and lattice lcd respectively, the output of described auxiliary power module connects the input of drive circuit, sample circuit, micro controller module and lattice lcd respectively.
Wherein, described micro controller module adopts STM32F103VE Strong MCU, and the chip model of described lattice lcd is LPH7366, and the chip model of described drive circuit is TLP250, and described sample circuit adopts current transformer and voltage transformer.
The present invention is divided into front and back stages, prime adopts and recommends the busbar voltage that the direct current of input is boosted to about 350V by booster circuit, rear class adopts full bridge inverter, inverter bridge exports after filter filtering, voltage sample is carried out with isolating transformer, current transformer carries out current sample, to form feedback element, increases the stability that power supply exports.Voltage-boosting stage PWM drives and inverse cascade SPWM drives by the generation of STM32 single-chip microcomputer, reduces hardware costs.Based on the 400W model machine of such scheme trial-production; have output short circuit protection, overcurrent protection and input overvoltage protection, under-voltage protection function, when 50Hz exports, frequency departure is less than 0.05Hz, and fully loaded (400W) efficiency is higher than 87%; voltage accuracy is 220V ± 1%, and THD is less than 1.5%.
Inverter is widely used, and particularly the performance requirement of precision instrument to inverter is higher.High-performance inverter not only requires that working stability, inversion efficiency are high, output waveform characteristic is good, defencive function is complete, also requires that inverter is miniaturized, intelligent and possesses extensibility.The present invention proposes a kind of Pure numerical form Sinusoidal Inverter based on STM32 series monolithic STM32F103VE, and the repertoire of this power supply is realized by Single-chip Controlling, and have output voltage, frequency stabilization, efficiency is high, the feature that defencive function is complete.
The present invention mainly comprises DC push-pull booster circuit, sine-converter circuit, output filter circuit, drive circuit, sample circuit, master controller and lattice lcd and forms.Wherein, input voltage is increased to the bus direct voltage of more than the peak value exporting sinusoidal ac by DC boosting part; sine-converter part obtains sinusoid alternating current by after the inversion of bus direct voltage through output filter circuit; sample circuit is then sampled to busbar voltage, bus current, output voltage, output current, input voltage, to realize the functions such as short-circuit protection, over-and under-voltage protection, overcurrent protection, loop pressure-stabilizing.The function of drive circuit the logic level of drive singal is carried out coupling to amplify, to meet the requirement of driving power pipe.The function of control circuit produces drive singal, and process sampled signal, to realize complicated systemic-function.The function of lattice lcd is display system job information, if output voltage, electric current and protection information etc.
STM32F103VE Strong MCU selected by master controller of the present invention, and STM32 series monolithic is ST Microelectronics is the product of the Embedded Application design of high-performance, low cost, low-power consumption specially.This single-chip microcomputer adopts Harvard structure, make processor carry out getting location and data read-write operation simultaneously, the performance of processor supports monocycle hardware multiplication division up to 1.25MIPS/MHz., maximum clock frequency 72M, on the maximum 512kB of reaching sheet, on Flash and 64kB sheet, RAM. has numerous being applicable to such as the ADC of nearly 30 road PWM and 3,12 precision simultaneously and does inversion and motor-driven peripheral hardware.In the present system for generation of PWM, SPWM drive singal, and sampled signal is processed, to complete voltage stabilizing feedback and defencive function, and drive Programs for Matrix Liquid Crystal Display information.Consider actual power tube and the speed of driving chip, boosting PWM wave frequency is 20kHz, and inversion SPWM wave frequency is the difference of 18kHz. according to modulator approach, and SPWM drive singal form can be divided into: bipolarity, unipolarity and unipolarity frequency multiplication.Because the bipolar modulation distortion factor is little, therefore in the design, SPWM adopts bipolar drive mode.
Lattice lcd: select LPH7366 type lattice lcd, there is the feature of super low-power consumption.For the operating state that display system is current, as information such as output voltage, output current, input voltages.Whether indication mechanism is in protection and is in which kind of guard mode simultaneously.
Accessory power supply: for system different piece provides different voltage electricity demands, being depressured to 5.0V rear portion by DC input voitage through LM2596-5V is that sample circuit is powered, another part through LDO voltage stabilizer LM117-3.3V voltage stabilizing to 3.3V for processor and lattice lcd.Meanwhile, the voltage of about 20V is obtained by an auxiliary winding of push-pull transformer, for drive circuit after rectifying and wave-filtering and LM2596-ADJ voltage stabilizing to 15V.
Drive circuit: the high speed photo coupling isolated form IGBT/MOSFET driving chip TLP250.TLP250 selecting semiconductor company of Toshiba to produce has the features such as isolation voltage is high, driving force is strong, switching speed is fast.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, makes a variety of changes under can also or else departing from the prerequisite of present inventive concept.
Claims (5)
1. one kind based on STM32 High-Performance Digital formula sine-wave inverter, it is characterized in that: comprise DC push-pull booster circuit, sine-converter circuit, output filter circuit, drive circuit, sample circuit, micro controller module, lattice lcd and auxiliary power module, wherein, described DC push-pull booster circuit, sine-converter circuit, output filter circuit connects successively, the output of described drive circuit respectively with DC push-pull booster circuit, the input of sine-converter circuit connects, the input of described sample circuit respectively with DC push-pull booster circuit, sine-converter circuit, the output of output filter circuit connects, the output of described sample circuit connects the input of micro controller module, the output of described micro controller module connects the input of drive circuit and lattice lcd respectively, the output of described auxiliary power module connects the input of drive circuit, sample circuit, micro controller module and lattice lcd respectively.
2. one according to claim 1 is based on STM32 High-Performance Digital formula sine-wave inverter, it is characterized in that: described micro controller module adopts STM32F103VE Strong MCU.
3. one according to claim 1 is based on STM32 High-Performance Digital formula sine-wave inverter, it is characterized in that: the chip model of described lattice lcd is LPH7366.
4. one according to claim 1 is based on STM32 High-Performance Digital formula sine-wave inverter, it is characterized in that: the chip model of described drive circuit is TLP250.
5. one according to claim 1 is based on STM32 High-Performance Digital formula sine-wave inverter, it is characterized in that: described sample circuit adopts current transformer and voltage transformer.
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| CN201510537108.9A CN105162348A (en) | 2015-08-28 | 2015-08-28 | STM32-based high-performance all-digital sine wave inverter power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737987A (en) * | 2016-03-24 | 2016-07-06 | 苏州合欣美电子科技有限公司 | Color recognition system |
| CN105784071A (en) * | 2016-04-26 | 2016-07-20 | 江苏省电力公司常州供电公司 | Oil level ultrasonoscope for transformer oil conservator |
| CN105823482A (en) * | 2016-03-24 | 2016-08-03 | 苏州合欣美电子科技有限公司 | Carrier movement track measuring system based on sine wave inverter power source |
| CN108054942A (en) * | 2017-12-19 | 2018-05-18 | 上海电机学院 | A kind of cascaded H-bridges multi-electrical level inverter using microprocessor |
| CN109149730A (en) * | 2018-11-12 | 2019-01-04 | 深圳市创世达实业有限公司 | Accumulation energy type inversion mobile power source and its working method |
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| CN202931222U (en) * | 2012-05-17 | 2013-05-08 | 天津市拓朴方得科技有限公司 | Inverter power supply control device |
| CN203788183U (en) * | 2014-01-03 | 2014-08-20 | 上海理工大学 | Vehicle-mounted inverter |
| CN204967653U (en) * | 2015-08-28 | 2016-01-13 | 苏州市博得立电源科技有限公司 | Based on sinusoidal wave invertion power supply of STM32 high performance full digital |
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2015
- 2015-08-28 CN CN201510537108.9A patent/CN105162348A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202931222U (en) * | 2012-05-17 | 2013-05-08 | 天津市拓朴方得科技有限公司 | Inverter power supply control device |
| CN203788183U (en) * | 2014-01-03 | 2014-08-20 | 上海理工大学 | Vehicle-mounted inverter |
| CN204967653U (en) * | 2015-08-28 | 2016-01-13 | 苏州市博得立电源科技有限公司 | Based on sinusoidal wave invertion power supply of STM32 high performance full digital |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737987A (en) * | 2016-03-24 | 2016-07-06 | 苏州合欣美电子科技有限公司 | Color recognition system |
| CN105823482A (en) * | 2016-03-24 | 2016-08-03 | 苏州合欣美电子科技有限公司 | Carrier movement track measuring system based on sine wave inverter power source |
| CN105784071A (en) * | 2016-04-26 | 2016-07-20 | 江苏省电力公司常州供电公司 | Oil level ultrasonoscope for transformer oil conservator |
| CN108054942A (en) * | 2017-12-19 | 2018-05-18 | 上海电机学院 | A kind of cascaded H-bridges multi-electrical level inverter using microprocessor |
| CN109149730A (en) * | 2018-11-12 | 2019-01-04 | 深圳市创世达实业有限公司 | Accumulation energy type inversion mobile power source and its working method |
| CN109149730B (en) * | 2018-11-12 | 2023-12-22 | 深圳市创世达实业股份有限公司 | Energy storage type inversion mobile power supply and working method thereof |
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Application publication date: 20151216 |