CN106604495B - The starter and control method of cold light bulb - Google Patents

The starter and control method of cold light bulb Download PDF

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Publication number
CN106604495B
CN106604495B CN201611040584.0A CN201611040584A CN106604495B CN 106604495 B CN106604495 B CN 106604495B CN 201611040584 A CN201611040584 A CN 201611040584A CN 106604495 B CN106604495 B CN 106604495B
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China
Prior art keywords
light bulb
cold light
igbt
circuit
control unit
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Expired - Fee Related
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CN201611040584.0A
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CN106604495A (en
Inventor
黄伟军
华猛
吴晨辉
顾敏明
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Suzhou University of Science and Technology
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Suzhou University of Science and Technology
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Priority to CN201611040584.0A priority Critical patent/CN106604495B/en
Publication of CN106604495A publication Critical patent/CN106604495A/en
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Publication of CN106604495B publication Critical patent/CN106604495B/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10Controlling the light source

Abstract

Present invention discloses the starters and control method of a kind of cold light bulb, including current sampling circuit, microprocessor control unit, IGBT performance loop and the cold light bulb in IGBT performance loop, it is exported all the way by increasing in current sampling circuit, collected current value is exported into microprocessor control unit, and it can be after carrying out short-circuit protection, microprocessor control unit is further that real short circuit or the cold light bulb of load are identified and handled to cold light bulb, microprocessor control unit is by executing short circuit-protection-unlock-power supply, make cold light bulb it is lasting pass through electric current, resistance wire resistance value constantly increases with fever, it is finally reached rated value, cold light bulb loads successfully.With after short circuit occurs for cold light bulb, protection act can be effectively executed, the advantage of generator and cold light bulb safety is protected.

Description

The starter and control method of cold light bulb
Technical field
The present invention relates to a kind of generator application fields, more particularly, to a kind of opening for cold light bulb of portable fuel generator Dynamic device and control method.
Background technique
With the remote region improvement of people's living standards, the growth of field work and mobile operational process amount, small portable The demand of fuel electric generator increasingly increases.Portable fuel generator is to drive electrical power generators by prime mover of oil-burning machine Dynamic power machine.The alternating current that fuel electric generator generates, the DC voltage of about 400V or so is converted by rectification circuit, using Inverter circuit exports the alternating current of general 230V, 50HZ, with for users to use.However, process of the fuel electric generator in work In, it may appear that situations such as overheating, is under-voltage, electrical equipment is short-circuit, generator control system can take corresponding safeguard measure.Generally , it when short-circuit conditions occurs in load (electrical equipment etc.), easily causes short circuit current excessive, is more than device components rated current Value, is easy to produce a large amount of heat, to burn out generator and load.After Generator test to short-circuit conditions, it will stop to export Voltage stops working.By taking 5KW fuel electric generator as an example, output voltage 230V, rated current I=P/U=5000/230= 21.7A is calculated with 2 times of amount of redundancy, that is, when maximum current is 21.7*2=43.4A, is detected when generator control system When electric current is greater than 43.4, then determine that short circuit has occurred in connect load, generator walks stopping altogether, to protect generator and load. However in practical applications, the load equipment that generator often connects is lighting apparatus, and generator loading terminates incandescent lamp.Traditional is white Vehement lamp is that resistance wire electrified regulation to incandescent state is issued the light source equipment of visible light using heat radiation.The resistance of incandescent lamp Silk has the characteristic that resistance incrementally increases as the temperature rises.Under the state of cooling, resistance value very little, as the temperature rises, Reach rated power (60W, 100W, 200W etc.) when thermal balance.Therefore, when incandescent lamp just accesses, it will cause electric current because resistance is small It is very big, it is easy to be mistaken for short circuit, to trigger fuel electric generator starting short-circuit protection, generator is flame-out, accesses bulb light Failure.But the resistance wire resistance value of incandescent lamp increases with continuing to increase for electric current, and the high current duration is moment, power generation The short-circuit protection movement of machine belongs to false judgment, therefore, it is impossible to start incandescent lamp, can not provide illumination.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, the starter and controlling party of a kind of cold light bulb are provided Method increases in current sampling circuit and exports all the way, and collected current information is exported into microprocessor control unit, and And can be after carrying out short-circuit protection, microprocessor control unit is further real short circuit or the cold light bulb of load to cold light bulb It is identified and is handled.
To achieve the above object, the following technical solutions are proposed by the present invention: a kind of starter of cold light bulb, including electric current are adopted Sample circuit, microprocessor control unit, IGBT performance loop and the cold light bulb in IGBT performance loop, the electric current are adopted Sample circuit is connected with microprocessor control unit, and collected current information is exported to microprocessor control unit;It is described Microprocessor control unit is connected with IGBT performance loop, controls IGBT performance loop according to the current information, starts cold Light bulb.
Preferably, the IGBT performance loop includes IGBT driving chip, several IGBT and several phase inverters, the IGBT It is connect by phase inverter with the IGBT driving chip.
Preferably, the grid of the IGBT is connected with phase inverter.
Preferably, the IGBT driving chip is connected with microprocessor control unit, the microprocessor control unit Control IGBT driving chip drives corresponding IGBT on or off in turn.
Preferably, the IGBT quantity is 4, mono- group and every group one phase alternating current of control output of every two IGBT.
Preferably, diode is equipped between the IGBT source electrode and drain electrode.
A kind of starting control method of cold light bulb, the control method include the following steps:
S1, current information in current sampling circuit acquisition circuit, and it is input to microprocessor control unit;
S2, if the current information is greater than preset value, microprocessor control unit starts short-circuit protection, stops output;
S3, after postponing a period of time T1, microprocessor control unit exports unlocking signal to unlock IGBT performance loop;
S4, after postponing one end time T2, microprocessor control unit exports SPWM signal into IGBT performance loop, described IGBT performance loop exports alternating current to cold light bulb;
S5 repeats step S2~step S4, so that the resistance wire resistance value of cold light bulb reaches rated value, cold light bulb load Success.
Preferably, if the method also includes current values to be less than pre-set current value, fuel electric generator is worked normally.
Preferably, the method also includes microprocessor control unit to issue SPWM signal into IGBT performance loop, institute It states IGBT output alternating current and re-execute the steps S2~step S4 if there is short circuit in IGBT performance loop.
Preferably, if when the method also includes re-executeing the steps S2~step S4 times N greater than preset times, There is short circuit in cold bulb systems circuit, fuel electric generator stops working.
Preferably, the delay time T1 and T2 and execute step S2~step S4 times N according to following steps into Row adjustment:
A), current information in current sampling circuit acquisition output loop, and be input in comparator and be compared, and The changing value of comparison result and comparison result is input in BP neural network, while comparison result being input to PID control together In device processed;
B), the BP neural network is constantly corrected according to the changing value of the comparison result and comparison result by self study The connection weight of each unit in BP network exports result into PID controller, and the PID controller adjusts fuel electric generator Pid parameter delay time T1 and T2 and preset times N.
The beneficial effects of the present invention are: being exported all the way on device by increasing in current sampling circuit, will collect Current information export to microprocessor control unit, after hardware circuit carries out short-circuit protection, microprocessor control unit is logical It crosses software flow and carries out the equipment really short-circuit identification and processing for still loading cold light bulb;In method, microprocessor control is single Member is controlled by software flow, so that cold light bulb normally starts, and after short circuit occurs for cold bulb systems, can effectively be held Row protection act protects the safety of generator and cold bulb systems.
Detailed description of the invention
Fig. 1 is fuel electric generator structural schematic diagram of the invention;
Fig. 2 is IGBT performance loop circuit diagram of the invention;
Fig. 3 is that cold light bulb Booting sequence diagram of the invention is intended to;
Fig. 4 is that the Self-learning PID Controller control fuel electric generator of the invention based on BP neural network starts cold light bulb Schematic diagram.
Appended drawing reference: 1, fuel electric generator, 2, rectification circuit, 3, inverter circuit, 4, load, 5, current sampling circuit, 6, Short-circuit detecting circuit, 7, protection circuit, 8, analog to digital conversion circuit, 9, microprocessor control unit, 10, driving circuit, 11, control Circuit, 12, IGBT driving chip, 13, IGBT-S1,14, IGBT-S2,15, IGBT-S3,16, IGBT-S4,17, phase inverter S1, 18, phase inverter S2,19, phase inverter S3,20, phase inverter S4.
Specific embodiment
Below in conjunction with attached drawing of the invention, clear, complete description is carried out to the technical solution of the embodiment of the present invention.
In conjunction with Fig. 1, the cold light bulb starter of disclosed oil-burning machine generator, including fuel electric generator 1, rectification The load 4 that circuit 2, inverter circuit 3 and inverter circuit 3 are connected, in the present embodiment, the load 4 is cold light bulb.It is described Fuel electric generator 1 is connected with rectification circuit 2, and rectification circuit 2 is connected with inverter circuit 3, and fuel electric generator 1 generates when working Alternating current is converted into DC voltage after rectification circuit 2, and using inverter circuit 3, DC voltage can be converted to load 4 alternating currents used;The output loop that the inverter circuit 3 is connected with load 4 is equipped with current sampling circuit 5, the electricity Stream sample circuit 5 is used to acquire the current information in output loop;The current sampling circuit 5 by short-circuit detecting circuit 6 with Protection circuit 7 is connected, and is connected by analog to digital conversion circuit 8 with microprocessor control unit 9, by collected current information It is input to whether load 4 of the short-circuit detecting circuit 6 to judge to connect in output loop occurs short circuit, is input to microprocessor control Unit 9 processed is to judge whether really short circuit or offered load 4;The microprocessor control unit 9 passes through driving respectively Circuit 10, control circuit 11 are connected with inverter circuit 3, and further, the microprocessor control unit 9 also passes through protection electricity Road 7 is connected with inverter circuit 3, when the current information that current sampling circuit 5 acquires meets condition, microprocessor control unit 9 execute corresponding movement, start cold light bulb.
Specifically, generating alternating current when fuel electric generator 1 works is input to rectification circuit 2, by converting after rectification circuit 2 At DC voltage, then by inverter circuit 3, DC voltage is converted into the alternating current that cold light bulb is able to use.Current sample electricity Collected current information is input to short-circuit detecting circuit 6 by road 5 all the way, is input to microprocessor control unit 9 all the way, this In embodiment, the current information is current value, if short trouble occurs for 4 circuits of load, current sampling circuit 5 is collected Current value is greater than the set value, then short-circuit detecting circuit 6 determines that short circuit occurs for 4 equipment of load, generates short-circuit protection trigger signal extremely Circuit 7 is protected, and then trigger protection circuit 7 carries out short-circuit protection, final plant closure inverter circuit 3, fuel electric generator 1 stops work Make.
In order to enable cold light bulb on fuel electric generator 1 by normal load, the present invention passes through in current sampling circuit 5 Increase exports all the way, is input to microprocessor control unit 9, when short-circuit detecting circuit 6 triggers short-circuit protection, further Judge that the cold light bulb connected in output loop is real short circuit or is loading cold light bulb.
IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) performance loop packet Include driving circuit 10, control circuit 11, protection circuit 7 and inverter circuit 3, the IGBT performance loop and microprocessor control Unit 9 processed is connected, and the microprocessor control unit 9 controls IGBT performance loop to start cold light bulb.IGBT works back Road circuit diagram as shown in Fig. 2, the IGBT performance loop includes IGBT driving chip 12, several IGBT and several phase inverters, The IGBT is connected by phase inverter with the IGBT driving chip 12.
Specifically, the IGBT driving chip 12 is connected with the microprocessor control unit 9, the IGBT drives core Piece 12 includes 5 pins, and HIN, LIN pin are connected with microprocessor control unit 9, for inputting SPWM signal (Sinusoidal Pulse Width Modulation, sinusoidal pulse width modulation), ITRIP pin are equally controlled with microprocessor Unit 9 is connected, and for controlling 12 blocking of IGBT driving chip, further controls the turn-on and turn-off of IGBT, PIA, PIB For output pin, PIA the and PIB pin passes through phase inverter respectively and is connected with IGBT, controls the turn-on and turn-off of IGBT.This In embodiment, the IGBT quantity is 4, i.e. IGBT-S1 13, IGBT-S2 14, IGBT-S3 15, IGBT-S4 16, each Diode is equipped between the source electrode and drain electrode of a IGBT, four IGBT are divided into two groups, every group of one intersection of IGBT control Galvanic electricity output.
Further, the specific connection type of each IGBT are as follows: the source electrode of IGBT-S1 13, IGBT-S2 14 connects jointly The anode of DC power supply, the drain electrode of IGBT-S3 15, IGBT-S4 16 connect the cathode of DC power supply, the leakage of IGBT-S1 13 jointly Pole is connected with the source electrode of IGBT-S3 15, is connected to one end of load 4, the source electrode of IGBT-S2 14 drain electrode and IGBT-S4 16 It is connected, is connected to the other end of load 4.The grid of IGBT-S1 13, IGBT-S2 14, IGBT-S3 15, IGBT-S4 16 The output pin PIA and PIB of IGBT driver are connected to by a phase inverter respectively, wherein IGBT-S1 13 passes through phase inverter S1 17 is connected to PIA pin, and IGBT-S2 14 is connected to PIB pin by phase inverter S2 18, and IGBT-S3 15 passes through reverse phase Device S3 19 is connected to PIB pin, and IGBT-S4 16 is connected to PIA pin by phase inverter S4 20.
When the electric current that short-circuit detecting circuit 6 measures is greater than preset value, then short-circuit protection circuit 7 is triggered, generator stops Only output voltage, microprocessor control unit 9 receive the high current value of analog to digital conversion circuit input, are detected simultaneously by short-circuit protection After movement, the starting of cold light bulb is executed.
Specifically, the current value for being input to microprocessor control unit 9 is higher than pre-set current value, (such as pre-set current value is When 0.5A), drives the current comparator inside IGBT driving chip 12 to overturn rapidly by ITRIP pin, promote chip interior Fault logic exports low level, blocks the output of input pulse signal processor, so that the output of PIA, PIB pin is whole For low level, therefore IGBT-S1 13, IGBT-S2 14, IGBT-S3 15, IGBT-S4 16 is all off, protects power tube, Without output voltage.
After breaking down, the output of 12 internal logic unit of IGBT driving chip keeps failure locking state, only faulty After removing namely when current value is lower than setting value, the input high level in HIN the and LIN pin of IGBT driving chip 12, ability Enough release the failure locking state of internal logic unit.Due to not having voltage output, output electric current is reduced to zero, current sample electric current Collected current value is lower than preset value, then unlocks the output of the input pulse signal processor in IGBT driving chip 12, make The output of PIA and PIB pin is high level, further makes 4 IGBT conductings.
It is delayed after a period of time T1, microprocessor control unit 9 is inputted to HIN the and LIN pin of IGBT driving chip 12 High level makes the output unlocking state of the fault logic of IGBT internal drive.
It being delayed after a period of time T2, microprocessor control unit 9 issues SPWM signal, IGBT driving chip 12 is controlled, into One step drives 4 power tube IGBT-S1 13,16 alternate conduction of IGBT-S2 14, IGBT-S3 15, IGBT-S4 and shutdown, produces Raw two-phase modulation waveform, final output voltage is adjustable, the two-phase alternating current of changeable frequency, is input to load 4.
Current sampling circuit 5 continues to execute current value sampling, and current value is exported to short-circuit detecting circuit 6 and microprocessor Control unit 9, if in the output loop detected current value still overrate when, recycle execution short circuit-protection-solution Lock-power supply repeats n times, if the value of N is greater than preset number, wherein N is the integer more than or equal to 1, then is determined as true Real short circuit, fuel electric generator 1 stop working.Otherwise, during continuous repeated priming, cold light bulb is lasting by electric current, Resistance wire resistance value constantly increases with fever, is finally reached rated value, and light bulb loads successfully, and fuel electric generator 1 works normally. T1, T2, N are then different and different according to the watt level of fuel electric generator 1.
A kind of starting control method of cold light bulb, includes the following steps:
S1, current sampling circuit 5 acquires current information in output loop, and is input to microprocessor control unit 9;
S2, if the current value is greater than preset value, microprocessor control unit 9 starts short-circuit protection, stops output;
S3, after postponing a period of time T1, microprocessor control unit 9 exports unlocking signal to unlock IGBT performance loop;
S4, after postponing a period of time T2, microprocessor control unit 9 exports SPWM signal into IGBT performance loop, institute It states IGBT performance loop and exports alternating current to cold light bulb;
S5 repeats step S2~step S4, so that the resistance wire resistance value of cold light bulb reaches rated value, cold light bulb load Success.
Specifically, the present invention is exported in cold light bulb start-up course by increasing in current sampling circuit 5 all the way, will It is exported to microprocessor control unit 9, handles its unit control IGBT performance loop by micro-control to start cold light bulb.Such as figure Shown in 3 flow charts, current sampling circuit 5 first carries out the sampling of electric current, and is input to micro-control processing unit, if collecting If current value be less than pre-set current value, fuel electric generator 1 work normally, otherwise, start short-circuit protection, stop output electricity Pressure.It drives the current comparator inside IGBT driving chip 12 to overturn rapidly by ITRIP pin, promotes chip interior failure Logic unit exports low level, the output of input pulse signal processor is blocked, so that the output of PIA, PIB pin is all low Level, therefore IGBT-S1 13, IGBT-S2 14, IGBT-S3 15, IGBT-S4 16 is all off, power tube is protected, without defeated Voltage out.
It is delayed after a period of time T1, microprocessor control device unit exports unlocking signal to IGBT driving chip 12, executes IGBT driving chip 12 is unlocked, releases failure locking state, i.e., microprocessor control unit 9 is by IGBT driving chip 12 HIN and LIN pin input high level makes the output unlocking state of the fault logic of IGBT internal drive.
It is delayed after one section of T2, microprocessor control unit 9 exports SPWM signal to IGBT driving chip 12, and IGBT drives core Piece 12 controls IGBT alternate conduction, final output voltage.
There is the presence of electric current in circuit, current sampling circuit 5 continues to execute sampling, output to short-circuit detecting circuit 6 and micro- Processor control unit 9, judges whether there is short circuit, if existing short circuit in circuit, re-execute the steps S2~step S4, i.e. execution short circuit-protection-unlock-power supply determine load 4 equipment short circuit if the times N executed is greater than preset times, Fuel electric generator 1 stops working, and otherwise, by continuously executing short circuit-protection-unlock-power supply, cold lamp resistance silk is not open close Electricity, resistance increase with fever and reach rated value, then cold light bulb starts successfully.
In cold light bulb start-up course, delay time T1 and T2, and execute short circuit-protection-unlock-power supply times N With the difference of the output power size of fuel electric generator 1 itself, and when starting cold light bulb watt level difference, need to carry out It is corresponding to adjust, in the present embodiment, fuel electric generator is controlled by the way that the Self-learning PID Controller based on BP neural network is arranged 1.As shown in figure 4, the Self-learning PID Controller control fuel electric generator 1 based on BP neural network starts the schematic diagram of cold light bulb, Current sampling circuit 5 acquires the current value in output loop, and is input in comparator and is compared, and by comparison result It is input in BP neural network with the changing value of comparison result, while comparison result being input in PID controller together.
BP neural network constantly learns and trains in cold light bulb start-up course, corrects the company of each unit in BP network at any time Weight is connect, makes the corresponding result of the output of BP neural network into PID controller, the PID of the PID controller regulator generator Parameter namely delay time T1 and T2, and execute short circuit-protection-unlock-power supply times N.BP neural network is by training Afterwards, can real-time optimization pid control parameter so that cold light bulb start-up course is one by secretly to bright normal processes, flicker free Sense.
The present invention, by increasing the output of current sampling circuit 5 all the way, makes its output to microprocessor on hardware circuit Control unit 9 carries out determining that whether really short circuit either loads cold light bulb to equipment, has protection hair by software flow control Motor guarantees the advantage of the safety of generator and equipment.
Technology contents and technical characteristic of the invention have revealed that as above, however those skilled in the art still may base Make various replacements and modification without departing substantially from spirit of that invention, therefore, the scope of the present invention in teachings of the present invention and announcement It should be not limited to the revealed content of embodiment, and should include various without departing substantially from replacement and modification of the invention, and be this patent Shen Please claim covered.

Claims (4)

1. a kind of starting control method of cold light bulb, which is characterized in that described method includes following steps:
S1, current sampling circuit acquires current information in output loop, and is input to microprocessor control unit;
S2, if the current information is greater than preset value, microprocessor control unit starts short-circuit protection, stops output voltage;
S3, after postponing a period of time T1, microprocessor control unit exports unlocking signal to unlock IGBT performance loop;
S4, after postponing a period of time T2, microprocessor control unit exports SPWM signal into IGBT performance loop, the IGBT Performance loop exports alternating current to cold light bulb;
S5 repeats step S2~step S4 so that the resistance wire resistance value of cold light bulb reaches rated value, cold light bulb load at Function.
2. the starting control method of cold light bulb according to claim 1, which is characterized in that the method also includes micro processs Device control unit issues SPWM signal into IGBT performance loop, and the IGBT exports alternating current, if depositing in IGBT performance loop In short circuit, then S2~step S4 is re-execute the steps.
3. the starting control method of cold light bulb according to claim 1, which is characterized in that if the method also includes again When executing step S2~step S4 times N greater than preset times, then there is short circuit, fuel electric generator in cold bulb systems circuit It stops working.
4. the starting control method of cold light bulb according to claim 3, which is characterized in that the delay time T1 and T2, And it executes step S2~step S4 times N and is adjusted according to following steps:
A), current information in current sampling circuit acquisition output loop, and be input in comparator and be compared, and will compare Changing value compared with result and comparison result is input in BP neural network, while comparison result is input to PID controller together In;
B), the BP neural network constantly corrects BP net by self study according to the changing value of the comparison result and comparison result The connection weight of each unit in network exports result into PID controller, and the PID controller adjusts the PID ginseng of fuel electric generator Number delay time T1 and T2 and preset times N.
CN201611040584.0A 2016-11-21 2016-11-21 The starter and control method of cold light bulb Expired - Fee Related CN106604495B (en)

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