CN102751929A - Electric control system of digital generator - Google Patents
Electric control system of digital generator Download PDFInfo
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- CN102751929A CN102751929A CN2011100978171A CN201110097817A CN102751929A CN 102751929 A CN102751929 A CN 102751929A CN 2011100978171 A CN2011100978171 A CN 2011100978171A CN 201110097817 A CN201110097817 A CN 201110097817A CN 102751929 A CN102751929 A CN 102751929A
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Abstract
The invention relates to a generator control circuit and discloses an electric control system of a digital generator. An MCU (Microprogrammed Control Unit) of the electric control system is respectively connected with a rectification controller, a drive circuit of an inverter, a sampling circuit of the inverter, a voltage detection circuit, a current detection circuit, a charge module, an air channel electric control circuit, a digital ignition module, a drive circuit of a step motor, a man-machine interface, a communication module and a rotation speed detection circuit. The rectification controller is respectively connected with a rectifier, a synchronous motor and a sampling circuit of the rectifier. The communication module is used for remote control of the starting of the generator. The generator is connected with a power head, when the power head rotates, the generator is driven to move and cut magnetic lines to generate electric power. The inverter passes through an LC (Inductance Capacitance) filter circuit and then is connected with an STS (Static Transfer Switch) non-slip module. The charge module is further connected with a storage battery which is respectively connected with the digital ignition module and a reverse drive circuit, and the reverse drive circuit is respectively connected with the generator and the rectification controller. The electric control system is safe and reliable, and with the electric control system, the generator can be ignited digitally and can switch automatically when power is cut off, and the generator realizes one-touch starting up.
Description
Technical field
The present invention relates to a kind of generator control circuit, relate in particular to a kind of digital electricity generating electric control system.
Background technology
Existing common small-sized fuel electric generator adopts the mechanical type starting drive usually, this starting drive, and the operator need possess certain strength, speed and skill.The rapid pull-up such as needs pull-up starting handle is gently exerted oneself till feeling resistance then.Be unfavorable for a year corpusculum weak person operation.When starting, existing in addition digital electricity generating also need a hand or pin to fix digital electricity generating, in order to avoid produce displacement because of the external force traction effect makes digital electricity generating in the hand pull starting-up process.
Only have in the market in large-scale non-portable digital generator and adopt electric starter, but structure is very complicated, machine volume is bigger, causes complete machine weight, cost significantly to increase.And hand starting mode digital electricity generating needs the repeated priming operation, and needs to grasp its startup skill.
Make generator satisfy state III discharge standard, need to improve the performance of engine, its key is to adopt the emission controls by improving combustion technology.The emission controls by improving combustion key problem in technology is to adopt lean burn, high-energy ignition, electronic fuel injection.And the control that focuses on firing circuit and amount of fuel of lean burn, high-energy ignition, electronic fuel injection technology.Though existing digital electricity generating possesses energy-saving function, it is mainly controlled through the energy-conservation rectification adjuster of switching mode (claiming air throttle again) and gets into fuel oil unit head fuel mixture flow, thus the rotating speed of control engine.This mode is with possessing certain energy-saving function, but its fuel-saving efficiency when full load is limited.Not from the control ignition angle, improve the mode of combustion efficiency and remove to realize energy-saving function.Existing digital electricity generating adopts analog circuit igniting (transistor ignition, capacitive discharge ignition, inductance type igniting) basically, and its ignition angle (time of ignition) is fixed.Other generators comprise the AC power that the ignition energy of digital electricity generating mainly induces from motor, and the power of igniter increases or reduces with the rotating speed of engine, loss of ignition easily, and ignition success rate is not high.In low temperature, low pressure, high altitude localities, can't start or flame-out phenomenon very general.
Existing generator (containing digital electricity generating) ignition energy mainly comes from the alternating current that magneto produces, and ignition energy is unstable when the slow-speed of revolution, because of the ignition energy deficiency causes mixed gas firing insufficient easily, causes fuel utilization ratio very low.
Existing digital electricity generating realization back-up source often need be bought expensive ATS device.This device exists volume big, and expensive, reliability are not high, and the life-span is shorter, especially electrical network impacted during the ATS function action and the rush of current of logarithmic code equipment bigger, accidents caused easily with cause generator institute carrying device to damage.
Summary of the invention
The object of the present invention is to provide a kind of reliable and secure, digital ignition trigger, the automatic indifference of cutting off the power supply is switched, and is simple to operate, can one touches the digital electricity generating electric control system of startup.
In order to achieve the above object, the present invention has following technical scheme:
A kind of digital electricity generating electric control system of the present invention; Wherein, MCU is connected with the drive circuit of commutation controller, inverter, inverter sample circuit, voltage detecting circuit, current detection circuit, charging module, air channel electric control circuit, digital ignition module, the drive circuit of stepping motor, man-machine panel, communication module, speed detect circuit respectively; Commutation controller is connected with rectifier, synchronous machine, rectifier sample circuit respectively, and wherein, communication module is used for the Long-distance Control generator and starts; Said synchronous machine is connected on generator output end; The rectifier sample circuit is connected on after the LC filter circuit of said rectifier output end, and the drive circuit of said inverter is connected with inverter, and inverter sample circuit, charging module, voltage detecting circuit, current detection circuit are connected on after the LC filter circuit of inverter output end; The digital ignition module is connected with unit head; Unit head is connected with generator, and inverter does not have the slip module with STS after through the LC filter circuit and is connected, and said charging module also is connected with storage battery; Storage battery is connected with digital ignition module, the reverse drive circuit of generator respectively, and the reverse drive circuit of generator is connected with generator, commutation controller respectively.
The invention has the advantages that:
1 the present invention is simple to operate, connects as long as smooth out with the fingers out-put supply, presses start button, and generator starts operation, only needs a step, realizes once success of starting ignition.
2 the present invention adopt digital ignition, and ignition angle is controlled, can realize lean burn control, and ignition success rate reaches 100%, and can make the rotating speed when idle reduce about 30% than other digital electricity generatings.At the rectification outlet side, over-voltage and over-current antisurge protective circuit is set respectively, is provided with voltage, current detection control circuit, STS of the present invention does not have the slip module can realize civil power, the conversion of generator indifference, avoids damaging subscriber equipment.
3, volume of the present invention is little, and is in light weight, low oil consumption, and output power is clean.
Description of drawings
Fig. 1 is the circuit block diagram of operation principle of the present invention;
Fig. 2 is rectifier rectification circuit theory diagrams of the present invention;
The pulse synchronization circuit figure of Fig. 3 for using in the rectifier of the present invention;
Fig. 4 is a thyristor trigger protection circuit diagram of the present invention;
Fig. 5 is angle of ignition positioning circuit figure of the present invention;
Fig. 6 is the sketch map of magneto of the present invention;
Fig. 7 is air throttle control circuit figure of the present invention;
Fig. 8 is a digital ignition schematic diagram of the present invention;
Fig. 9 is the sketch map of speed-adjusting and control system of the present invention;
The reverse drive circuit figure of Figure 10 generator of the present invention.
Among the figure: VT1, VT2, VT3, VT4, VT5, VT6, VT7, SCR, thyristor; R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R20, R21, R22, R23, R24, R25, R26, R27, R41, R43, R44, R47, R49, resistance; LM339D, SN74LS04D, operational amplifier; D13, D20, diode; C11, C20, C21, C23, C22, C24, C25, C26, C27, electric capacity; PC2, thyratron driver; VCC, E12, power supply; U13, step motor drive chip; The J1 stepping motor; B, STS do not have the slip module; 1, stator; 2, magneto magneto external rotor; 3, coil windings; 4, permanent magnet; 5, location tongue; 6, trigger winding; 7, phase magnet; 8 trigger windings.
Embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Referring to Fig. 1; A kind of digital electricity generating electric control system of the present invention; Wherein, MCU is connected with the drive circuit of commutation controller, inverter, inverter sample circuit, voltage detecting circuit, current detection circuit, charging module, air channel electric control circuit, digital ignition module, the drive circuit of stepping motor, man-machine panel, communication module, speed detect circuit respectively, and commutation controller is connected with rectifier, synchronous machine, rectifier sample circuit respectively; Wherein, Communication module is used for the Long-distance Control generator and starts, and said synchronous machine is connected on generator output end, and the rectifier sample circuit is connected on after the LC filter circuit of said rectifier output end; The drive circuit of said inverter is connected with inverter; Inverter sample circuit, charging module, voltage detecting circuit, current detection circuit are connected on after the LC filter circuit of inverter output end, and the digital ignition module is connected with unit head, and unit head is connected with generator; Inverter does not have the slip module with STS after through the LC filter circuit and is connected; Said charging module also is connected with storage battery, and storage battery is connected with digital ignition module, the reverse drive circuit of generator respectively, and the reverse drive circuit of generator is connected with generator, commutation controller respectively.
Control principle of the present invention:
Generating parts in the generator of the present invention are mainly by the fuel oil unit head and produce faradic permanent magnet induction motor and form.
After system detected the generator start key and is pressed, to " the reverse driver module of motor " power supply, magneto got electric rotation by MCU program control storage battery, and magneto rotates through mechanical transmission structure, mechanical movement about the parts in the cylinder of propulsion power head are done.Mechanical part moves upward in the cylinder, makes the fuel oil-gas compression after the atomizing.Light a fire at the time of ignition of the best through MCU calculating.After lighting a fire successfully, original electric power becomes the three-phase electricity electricity into direct current earlier through rectifier, after direct current LC Filtering Processing, exports direct current to and becomes the inverter that exchanges.The power supply that the inverter that the direct current change exchanges comes out after exchanging the LC Filtering Processing, can directly be supplied power to the user again.Among the figure, the circuit of B part is that STS does not have the slip module, links to each other with the inversion output of inverter rearmost end.Can replace expensive ATS power supply switching device.The effect of man-machine panel also is furnished with communication module except that operation push-button, can carry out the startup of remote control generator.
MCU is single-chip microcomputer or microprocessor.
Referring to Fig. 2, rectifier of the present invention (rectification circuit) adopts three-phase not control the bridge rectification circuit mode.When adopting the microcomputer timing mode to carry out the phase shifting control of rectifier; Need provide each thyristor to control initial timing square-wave signal constantly to microcomputer, make and shift to control device counterpoise in start pulse signal each cycle that thyristor sends and appear again existing at supply voltage.Therefore, the frequency of this square wave should be identical with supply frequency, promptly should be synchronous with supply voltage.
Select the three-phase half controlled bridge rectification circuit, compare three-plase half wave rectifier circuit, electric lead angle is big, and winding utilization is high; Compare the three-phase fully-controlled bridge circuit, more economical, simple.Three-phase full-bridge controlled rectifier must adopt greater than 60 ° broad pulse or two burst pulses triggerings of 60 ° at interval, and needs 6 group pulse sequences.Hardware circuit, control algolithm and programming are all complicated.Three-phase full-bridge controlled rectifier is used for inductive load and back electromotive force resistance sense load (promptly being used for the direct current machine transmission) mostly.Yet the three-phase half controlled bridge rectification circuit can well be avoided this shortcoming, can satisfy the requirement of digital electricity generating again.
Referring to Fig. 3, the pulse synchronization circuit that uses in the rectifier of the present invention its role is to:
When incoming frequency changed, the commutator pulse frequency can change, and was 1/3 of incoming frequency but remain its frequency size.Therefore catch each time the frequency of natural commutator pulse and just can carry out real-time tracking, thereby guarantee trigger angle, make time of delay within this period frequency scope incoming frequency.Because the seizure frequency ratio incoming frequency of single-chip microcomputer is high a lot, thereby can adapt to the rapid and very big situation of amplitude of frequency change.When confirming incoming frequency, also smooth out with the fingers 3 tunnel two synchronization pulses of handling of comparing and send into single-chip microcomputer, when commutator pulse comes temporarily, single-chip microcomputer just can accurately be judged the output phase sequence.
Referring to Fig. 4, thyristor trigger protection circuit of the present invention, wherein, first pin of photoelectrical coupler MOC3052 connects the 5V power supply, and the 2nd pin connects the triggering control signal pin of commutation controller chip behind current-limiting resistance, and control logic is effective for output end level.3052 the 6th pin is received on the major loop OUT_B of forceful electric power through power resistor R13, for the gate pole of thyristor provides triggering power.3052 the 4th pin is through current-limiting resistance R21 and a filter circuit R11, and C11 connects the gate pole of thyristor behind the D13.Diode D20 is used for stoping reverse electric current to flow through gate leve, in order to avoid damage thyristor.
Above-mentioned thyristor trigger protection circuit is mainly used in that controlled bridge-type rectification circuit and STS do not have silicon controlled drive protecting in the slip module to three-phase.
Referring to Fig. 5, Fig. 6, Fig. 7, the angle of ignition positioning circuit in the digital ignition module of the present invention:, need utilize the original ignition point of synchronization signal detection (being the gas compression maximization moment in the unit head cylinder) according to the needs of control.The coil windings of generator provides single-phase a, low pressure, coil windings synchronously, this winding is connected on the circuit cycle and definite start trigger point that just can obtain original alternating current through suitable circuit analysis.
The magneto as shown in Figure 6 phase magnet 7 that whenever rotates a circle will pass through trigger winding; At this moment small magnet will be done the corner cut magnetic force with trigger winding; In case there is that trigger winding of corner cut magnetic force will produce ultra-weak electronic signal, ultra-weak electronic signal is through piezo-resistance R44, and R43C27R41 partial pressure filter circuit and voltage comparator negative-phase input reference voltage are relatively; Produce an electric pulse and give MCU, MCU detects the rotating speed that this periodic calculated signals goes out magneto.Location tongue 5 links to each other with the bent axle of unit head among the figure, and with magneto magneto external rotor 2 motion, when trigger winding generation triggering signal, just in time is the time of ignition of unit head piston when reaching top dead centre.This time of ignition is a setup parameter, and the program in the circuit board can be according to generator speed, and the voltage signal of generation carries out the adjustment of time of ignition.This moment, gas in the jar was by the piston maximize compression.This moment is located tongue 5 in general identification, and motor rotates the center of circle, and the position that trigger winding 6 produces triggering signals is the reference ignition angle.The energy of ignition coil is mainly supplied with by storage battery among Fig. 8, and carries out ignition coil energy supply control by the triode of MCU control.When MCU detected the low level signal from the trigger winding treatment circuit, the program in the circuit board was according to generator speed, and last conditions such as igniting effect are carried out the correction of ignition angle (constantly), calculated optimum ignition angle.Use storage battery direct current ignition energy supply mode to overcome interchange ignition energy problem of unstable, guarantee the abundant burning of fuel oil, realize fuel-economizing and low-carbon emission, can adapt to the high height above sea level condition of low temperature and use.
Referring to Fig. 7, Fig. 9, the present invention is the purpose that reaches stabilized (steady-state) speed, according to the variation of load, correspondingly adjusts the aperture of air throttle, changes the quantity of the gaseous mixture that gets into cylinder.When load increases, descend in order not make engine speed, open the engine, increase gaseous mixture quantity, when load reduces, rise in order not make engine speed, turn down throttle opening, reduce the quantity of gaseous mixture.Fig. 9 is the sketch map of speed-adjusting and control system, wherein with the actuator of stepping motor as the control throttle opening.
Referring to Figure 10, the reverse drive circuit of generator of the present invention, wherein, and the three-phase output end of Ua Ub Uc sending and receiving motor, it is divided into 2 the tunnel, the one road to the half-controlling bridged rectifier circuit in circuit board, and another road is to the reverse driver module of generator.When system receives the generator enabling signal, control reverse driver module driven magnetic motor as power motion by MCU.This moment, MCU control made the controllable silicon in the half-controlling bridged rectifier circuit be in closed condition.The velocity of rotation of system's detection magneto judges according to the reverse driving rotating speed of velocity of rotation design is different whether igniting is successful.
After system confirms to light a fire successfully, close the driver module of inverter, and make half-controlling bridged rectifier work.
As stated, just can realize the present invention comparatively fully.The above is merely comparatively reasonably embodiment of the present invention, and protection scope of the present invention includes but are not limited to: this, and those skilled in the art is any to be included within the scope of the present invention includes based on unsubstantiality sex change change on the technical scheme of the present invention.
Claims (2)
1. digital electricity generating electric control system; It is characterized in that: MCU is connected with the drive circuit of commutation controller, inverter, inverter sample circuit, voltage detecting circuit, current detection circuit, charging module, air channel electric control circuit, digital ignition module, the drive circuit of stepping motor, man-machine panel, communication module, speed detect circuit respectively; Commutation controller is connected with rectifier, synchronous machine, rectifier sample circuit respectively; Wherein, Communication module is used for the Long-distance Control generator and starts, and said synchronous machine is connected on generator output end, and the rectifier sample circuit is connected on after the LC filter circuit of said rectifier output end; The drive circuit of said inverter is connected with inverter; Inverter sample circuit, charging module, voltage detecting circuit, current detection circuit are connected on after the LC filter circuit of inverter output end, and the digital ignition module is connected with unit head, and unit head is connected with generator; Inverter does not have the slip module with STS after through the LC filter circuit and is connected; Said charging module also is connected with storage battery, and storage battery is connected with digital ignition module, the reverse drive circuit of generator respectively, and the reverse drive circuit of generator is connected with generator, commutation controller respectively.
2. a kind of digital electricity generating electric control system according to claim 1 is characterized in that: said rectifier adopts the three-phase half controlled bridge rectification circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100978171A CN102751929A (en) | 2011-04-19 | 2011-04-19 | Electric control system of digital generator |
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| CN2011100978171A CN102751929A (en) | 2011-04-19 | 2011-04-19 | Electric control system of digital generator |
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| CN102751929A true CN102751929A (en) | 2012-10-24 |
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| CN2011100978171A Pending CN102751929A (en) | 2011-04-19 | 2011-04-19 | Electric control system of digital generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061104A (en) * | 2013-10-22 | 2014-09-24 | 廊坊金润科技有限公司 | Digital generator system |
| CN105182861A (en) * | 2015-10-10 | 2015-12-23 | 重庆凯比科技有限公司 | Generator monitoring control device |
| CN105245143A (en) * | 2015-10-10 | 2016-01-13 | 重庆凯比科技有限公司 | Monitoring control device for working condition of generator |
| CN106199190A (en) * | 2016-08-31 | 2016-12-07 | 宁波市奥创动力科技有限公司 | A kind of inverter generator inverter controlled rectification phase detecting circuit |
| CN106864277A (en) * | 2017-03-20 | 2017-06-20 | 重庆力华自动化技术有限责任公司 | One kind increases range controller control circuit |
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Cited By (5)
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| CN106199190A (en) * | 2016-08-31 | 2016-12-07 | 宁波市奥创动力科技有限公司 | A kind of inverter generator inverter controlled rectification phase detecting circuit |
| CN106864277A (en) * | 2017-03-20 | 2017-06-20 | 重庆力华自动化技术有限责任公司 | One kind increases range controller control circuit |
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Application publication date: 20121024 |