CN109713727A - A kind of portable threephase alternator electricity-generating method - Google Patents
A kind of portable threephase alternator electricity-generating method Download PDFInfo
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- CN109713727A CN109713727A CN201910169755.7A CN201910169755A CN109713727A CN 109713727 A CN109713727 A CN 109713727A CN 201910169755 A CN201910169755 A CN 201910169755A CN 109713727 A CN109713727 A CN 109713727A
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Abstract
The invention discloses a kind of portable threephase alternator electricity-generating methods, specifically include that inverter circuit, triggering driving circuit, three-phase four-wire system output circuit, output sample circuit, microprocessor unit and portable threephase generator related facility.Portable electric generator is easy to use, it but is usually all single-phase, a kind of this portable threephase alternator electricity-generating method is in parallel by three groups of inversion units, and control the triggered time of corresponding inverter circuit, produce the sine wave that three groups of phase differences are 120 °, the output of three groups of inverter circuits connects into three-phase four-wire system structure, to export three-phase alternating current, meets the demand for the region three-phase power load that can not be covered in field or power grid.Present invention improves the application ranges of minitype gas dynamotor, can be widely applied to technical field of generators.
Description
Technical field
It is particularly a kind of portable the present invention relates to petrol engine field, especially gasoline engine generator control system field
Formula threephase alternator electricity-generating method.
Background technique
Our people's life at present is become better and better, and the requirement to environment is higher and higher, with the development of China's power industry
With it is universal, get used to be unableing to do without mobile phone, computer, refrigerator, electric cooker, electromagnetism using various electric appliances in daily life
The various electric appliances such as furnace.But electric energy is provided without power grid in the remote districts such as desert, grassland, people drive out to go camping, some
When the situations such as emergency management and rescue, site operation, there are various electricity needs.Minitype gas dynamotor is easy to carry, meets this
Demand.
Minitype gas dynamotor is small in size, and the ratio of performance to price is high, be suitble to some unregulated power feed regions family field or
Engineering power demand.But this kind of mobile generators are typically all single-phase, the households such as suitable illumination, electric cooker, insulating pot
Electric appliance, if some load (such as: engineering construction mechanical equipment etc.) is three phase electric equipment, generator is unable to drive load
It works normally.
As a kind of mobile unit, the rated power of separate unit generator is it is not possible that unconfined increase, some portable
The general power of power load it is also smaller, what is needed is also single phase poaer supply, but in some unregulated power feed regions, also has work
Journey equipment is needed using three-phase alternating current, although the alternating current voltage amplitude of single-phase generator output, frequency are identical, phase
It is different with the difference of starting time, three generator parallels are directly connected into three phase mains, it will cause wave distortion,
It influences generator to work normally, or even short circuit, damages generator.
Summary of the invention
In order to solve the above-mentioned technical problem, the invention discloses a kind of portable threephase alternator electricity-generating methods, main
Include: inverter circuit, triggering driving circuit, three-phase four-wire system output circuit, output sample circuit, microprocessor unit and
Portable threephase generator related facility.Three road inverter circuit units are arranged in generator, and the output of three road inverter circuits connects
It is connected into three-phase four-wire system structure, to realize the output of three-phase alternating current, drives the normal work of threephase load.
To achieve the above object, the following technical solutions are proposed by the present invention:
The described method includes: the output of three road inverter circuits connects into three-phase four-wire system structure, driving circuit is inverse to three roads
The pulse drive signal of power transformation road difference timing generates the sine wave of three tunnel outs of phase, to realize the defeated of three-phase alternating current
Out.
Preferably, the pulse signal that the pulse drive signal is period 20ms, changes according to certain rules, by micro process
Device unit provides, and the periodically pulsing start point signal in three tunnels successively differs 1/3 period, and thus generating three road phase differences is 120 °
Sine wave.
Preferably, the pulse that the periodically pulsing signal has 400 width to differ in size in one cycle, respectively
The width of a pulse is calculated according to formula according to the needs that inversion generates sine wave and is obtained, and is stored with spreadsheet format, each
Pulse width can be adjusted by the variation of output voltage.
Preferably, the method also includes following steps:
Step 1: starting generator, enters step two；
Step 2: microprocessor unit starting inverter circuit work, send unit A from the first data starting of pulse-width data table
Triggering driving pulse enter step three in cycles；
Step 3: microprocessor unit synchronous transmission unit B from first data of pulse-width data table postponed for 1/3 period
Trigger driving pulse, in cycles, microprocessor unit synchronous transmission from first data of pulse-width data table postponed for 2/3 period
The triggering driving pulse of unit C is transferred to step 4 in cycles；
Step 4: output sample circuit acquires three road output voltages, sampled value send microprocessor unit, enters step five；
Step 5: microprocessor unit by each road output voltage sampled value compared with 220V standard value, and calculating difference, into
Enter step 6；
Step 6: calculating the correction amount of each road pulse width according to difference, seven are entered step；
Step 7: adjusting each road pulse width time table according to correction amount, and sent in each road trigger pulse of next period, with true
Bao Gelu output is stablized in specified 220V, return step two.
Compared with prior art, the beneficial effects of the present invention are:
First, the present invention compensates for minitype gas dynamotor by increasing minitype gas dynamotor three-phase alternating current Electricity Functional
The shortcomings that being typically only capable to output single-phase alternating current meets the electricity consumption of user in the occasion for having threephase load to apply in which can be convenient
Demand.
Second, portable small-sized gasoline engine generator three-phase alternating current Electricity Functional of the present invention, while being also able to satisfy single-phase
The needs of power load, the attaching plug of electrical equipment in use, need to be only connected to generator output of the present invention by user
A, any one end in B, C and N-terminal, after starting generator can single machine work, be not necessarily to other operating procedures, spirit easy to use
It is living.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is a kind of portable threephase alternator electric device structure figure of a preferred embodiment of the present invention；
A kind of flow chart of the portable threephase alternator electricity-generating method of Fig. 2 a preferred embodiment of the present invention.
Appended drawing reference: 1, microprocessor unit, 2, sample circuit, 3, driving circuit A, 4, inverter circuit A, 5, rectified current
Road, 6, petrol engine, 31, driving circuit B, 41, inverter circuit B, 32, driving circuit C, 42, inverter circuit C.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, so that advantages of the present invention
It can be easier to be readily appreciated by one skilled in the art with feature.Obviously, described embodiment is only that a part of the invention is implemented
Example, instead of all the embodiments.Based on the implementation in the present invention, those of ordinary skill in the art are not making creative labor
All other embodiment obtained under the premise of dynamic, shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of portable threephase alternator electric device structure figure, the electric device structure figure packet
Include: microprocessor unit 1, output sample circuit 2, driving circuit 3 (driving circuit 31, driving circuit 32), inverter circuit 4 are (inverse
Power transformation road 41, inverter circuit 42), rectification circuit 5, gasoline engine generator 6 and three-phase four-wire system output circuit.Microprocessor unit
1 is connected with output sample circuit 2, and microprocessor unit 1 is connected to 3 driving circuit 31 of driving circuit and driving circuit simultaneously
32,3 output end of driving circuit is connected to inverter circuit 4, and 31 output end of driving circuit is connected to inverter circuit 41, driving circuit 32
Output end is connected to inverter circuit 42, and petrol engine 6 is connected to rectification circuit 5, and the output end of rectification circuit 5 is connected to inversion
Circuit 4, the output of inverter circuit 4, inverter circuit 41, inverter circuit 42 connect into three-phase four-wire system output circuit.
After the petrol engine 6 starts, the gasoline of fuel tank enters engine cylinder burning, and reciprocating motion of the pistons is pushed to do
Function, driving generator amature cutting magnetic line to generate frequency proportions becomes direct current after the alternating current of revolving speed, rectified circuit 5
Electricity, then become loading required three-phase alternating current through inverter circuit.
Specifically, the inverter circuit and driving circuit one unit of each composition, is total to there are three A, B, C cell,
The inverter circuit output end of each unit exports one group of alternating current.
Specifically, the microprocessor unit 1 generates needed for inverter circuit 3 (driving circuit 31, driving circuit 32)
The timing of driving signal, three tunnel driving signals is different；
Specifically, the output end of the inverter circuit is L, N, three tunnels are shared, the output end L of three road inverter circuits is three
The output end N of A, B of phase four-wire system, C-terminal, three groups of inverter circuits link together, and form the common end N of three-phase four-wire system；Institute
The threephase generator stated forms three-phase alternating current output by A, B, C-terminal and common end N, can also be by the either end and public affairs in A, B, C-terminal
End N forms single phase ac output altogether.
Specifically, the output sample circuit includes signal conditioning circuit and A/D conversion circuit, sample circuit is adopted respectively
Collect the output voltage of three groups of inverter circuits, the voltage of sampling send A/D conversion circuit, A/D conversion after signal conditioning circuit is handled
Circuit send microprocessor unit after the voltage of analog quantity is converted into digital quantity.
As shown in Fig. 2, be a kind of flow chart of portable threephase alternator electricity-generating method in the present embodiment, including with
Under several steps:
Step 1: starting generator, enters step two；
Step 2: microprocessor unit starting inverter circuit work, send unit A from the first data starting of pulse-width data table
Triggering driving pulse enter step three in cycles；
Step 3: microprocessor unit synchronous transmission unit B from first data of pulse-width data table postponed for 1/3 period
Trigger driving pulse, in cycles, microprocessor unit synchronous transmission from first data of pulse-width data table postponed for 2/3 period
The triggering driving pulse of unit C is transferred to step 4 in cycles；
Step 4: output sample circuit acquires three road output voltages, sampled value send microprocessor unit, enters step five；
Step 5: microprocessor unit by each road output voltage sampled value compared with 220V standard value, and calculating difference, into
Enter step 6；
Step 6: calculating the correction amount of each road pulse width according to difference, seven are entered step；
Step 7: adjusting each road pulse width time table according to correction amount, and sent in each road trigger pulse of next period, with true
Bao Gelu output is stablized in specified 220V, return step two.
Working-flow of the invention: after the generator starting, microprocessor unit is synchronous to No. three driving circuits
The different triggering driving signal of transmission timing generates the sine wave of three tunnel outs of phase (phase difference is 120 °), to realize three
The output of phase alternating current, output sample circuit acquire the output of three road inverter circuits, send microprocessor unit after A/D is converted,
Microprocessor unit is every to guarantee to adjust the pulsewidth size of three tunnels triggering driving signal according to the sizes of three road output voltages
The output of inverter circuit is stablized in 220V all the way, drives the normal work of threephase load.
The present invention extends the function of minitype gas dynamotor, solves the electricity consumption of the three-phase power load of no Grid
Demand improves people to the quality satisfaction degree of minitype gas dynamotor.It the composite can be widely applied to gasoline engine generator technology neck
Domain.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure made by bright specification and accompanying drawing content improves similar structure, is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (4)
1. a kind of portable threephase alternator electricity-generating method, which is characterized in that the described method includes: three road inverter circuits
Output connects into three-phase four-wire system structure, and driving circuit gives the pulse drive signal of three road inverter circuit difference timing, generates three
The sine wave of road out of phase, to realize the output of three-phase alternating current.
2. a kind of portable threephase alternator electricity-generating method according to claim 1, which is characterized in that the arteries and veins
The pulse signal that driving signal is period 20ms, changes according to certain rules is rushed, is provided by microprocessor unit, three tunnels are periodic
Pulse signal starting point successively differs 1/3 period, thus generates the sine wave that three road phase differences are 120 °.
3. a kind of portable threephase alternator electricity-generating method according to claim 2, which is characterized in that the week
The width of the pulse that the pulse signal of phase property has 400 width to differ in size in one cycle, each pulse is raw according to inversion
It calculates and obtains according to formula at the needs of sine wave, stored with spreadsheet format, each pulse width can be by output voltage
Change and adjusts.
4. a kind of portable threephase alternator electricity-generating method according to claim 1, which is characterized in that the method
It is further comprising the steps of:
Step 1: starting generator, enters step two；
Step 2: microprocessor unit starting inverter circuit work, the touching of unit A is sent from the first data starting of pulse-width data table
Hair driving pulse enters step three in cycles；
Step 3: the triggering of microprocessor unit synchronous transmission unit B from first data of pulse-width data table postponed for 1/3 period
Driving pulse, in cycles, microprocessor unit synchronous transmission unit from first data of pulse-width data table postponed for 2/3 period
The triggering driving pulse of C is transferred to step 4 in cycles；
Step 4: output sample circuit acquires three road output voltages, sampled value send microprocessor unit, enters step five；
Step 5: microprocessor unit by each road output voltage sampled value compared with 220V standard value, and calculating difference, into step
Rapid six；
Step 6: calculating the correction amount of each road pulse width according to difference, seven are entered step；
Step 7: adjusting each road pulse width time table according to correction amount, and sent in each road trigger pulse of next period, it is each to ensure
Road output is stablized in specified 220V, return step two.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169755.7A CN109713727A (en) | 2019-03-07 | 2019-03-07 | A kind of portable threephase alternator electricity-generating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169755.7A CN109713727A (en) | 2019-03-07 | 2019-03-07 | A kind of portable threephase alternator electricity-generating method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284785A (en) * | 1999-08-17 | 2001-02-21 | 中国人民解放军后勤工程学院 | Small high-speed asynchronous power generator |
| CN2859928Y (en) * | 2005-12-08 | 2007-01-17 | 新疆新能源股份有限公司 | 300W modifying sine wave inverter |
| CN101068083A (en) * | 2007-01-22 | 2007-11-07 | 广东志成冠军集团有限公司 | Multi-standard UPS power supply and realizing method thereof |
| CN108377100A (en) * | 2018-04-24 | 2018-08-07 | 电王精密电器(北京)有限公司 | A kind of high-power sine wave AC Switching Power Supply |
-
2019
- 2019-03-07 CN CN201910169755.7A patent/CN109713727A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284785A (en) * | 1999-08-17 | 2001-02-21 | 中国人民解放军后勤工程学院 | Small high-speed asynchronous power generator |
| CN2859928Y (en) * | 2005-12-08 | 2007-01-17 | 新疆新能源股份有限公司 | 300W modifying sine wave inverter |
| CN101068083A (en) * | 2007-01-22 | 2007-11-07 | 广东志成冠军集团有限公司 | Multi-standard UPS power supply and realizing method thereof |
| CN108377100A (en) * | 2018-04-24 | 2018-08-07 | 电王精密电器(北京)有限公司 | A kind of high-power sine wave AC Switching Power Supply |
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