CN103590898A - Device for switching operating modes of free piston linear motor - Google Patents
Device for switching operating modes of free piston linear motor Download PDFInfo
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- CN103590898A CN103590898A CN201310530630.5A CN201310530630A CN103590898A CN 103590898 A CN103590898 A CN 103590898A CN 201310530630 A CN201310530630 A CN 201310530630A CN 103590898 A CN103590898 A CN 103590898A
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Abstract
The invention relates to a device for switching operating modes of a free piston linear motor, and belongs to the field of energy power. The device comprises a free piston internal-combustion engine, a three-phase linear motor and a working mode switching device. The working mode switching device comprises an alternating current contactor, a digital integrated circuit, a fuse protector, a driver and a load. The alternating current contact comprises a static iron core, an induction coil, a movable iron core, a reset spring, a normally closed contact, a normally open contact and an alternating current contactor connecting rod. Signals of the temperature and pressure inside a cylinder are detected and input into the digital integrated circuit, the digital integrated circuit outputs signals to control the attraction of the iron cores, the normally closed contact is made to be opened, the normally open contact is made to be closed, the linear motor is made to be disconnected with the driver and to be connected with the load, so that the liner motor is switched to an electric generator mode from a motor mode, stable and effective transition from system staring process to the stale operating process is ensured, and the electric generator mode can be kept unchanged during stable operation.
Description
Technical field
The present invention relates to a kind of Energy Project Mechatronic device, be specifically related to a kind of operating mode switching device of free piston linear motor, belong to energy source and power field.
Background technique
Existing internal combustion engine generator has that complex structure, volume are large, the thermal efficiency is low, the shortcomings such as many discharge pollutants.Existing research shows a kind of novel energy conversion equipment forming after free-piston type internal-combustion engine and linear electric motor coupling, it is free piston linear motor, there are high-energy conversion efficiency, high-energy-density, numerous advantages such as simple in structure, also therefore there is very wide application prospect.
The mode of operation of free piston linear motor is different from traditional internal combustion engine generator, tradition internal combustion engine generator is only operated under generator mode, and free piston linear motor need adopt linear electric motor linear reciprocating motion to drive internal combustion engine start, there is start-up course and stable operation process.Start-up course needs linear electric motor to be operated under electric motor mode, and the power line of linear electric motor is connected with driver; Stable operation process combustion in IC engine drives linear electric motor to-and-fro motion cutting magnetic induction line to produce electric energy output, requires again linear electric motor to be operated under generator mode, and the power line of linear electric motor is connected with load.This just needs a set of controlled mode-changeover device on suitable opportunity, to realize the switching of two kinds of mode of operations of linear electric motor, realizes system starting process to the switching of stable operation process.
Summary of the invention
The object of the invention is, for solving the pattern switching problem of free piston linear motor from motor to generator, provides a kind of and can realize the Mechatronic device that free piston linear electrical machine working mode switches.
The object of the invention is to be achieved through the following technical solutions.
An operating mode switching device for free piston linear motor, it comprises free piston internal combustion engine and three-phase linear motor, also comprises operating mode switching device.
On the cylinder wall of free piston internal combustion engine, be furnished with temperature transducer, pressure transducer;
Described operating mode switching device comprises: A.C. contactor, digital integrated electronic circuit, fus, driver, load, and wherein A.C. contactor comprises: static iron core, inductor coil, moving iron core, Returnning spring, normally-closed contact, normally opened contact, A.C. contactor connecting rod;
Annexation: digital integrated electronic circuit is connected with temperature transducer, pressure transducer; Digital integrated electronic circuit forms loop with the inductor coil being wrapped on static iron core; On moving iron core corresponding to static iron core, be fixed with A.C. contactor connecting rod; Moving iron core and Returnning spring are connected; A.C. contactor connecting rod and normally-closed contact, normally opened contact are connected; The contact of normally-closed contact one end is connected with driver, and the contact of the other end joins by the power line of fus and three-phase linear motor; The contact of normally opened contact one end is connected with load, and the contact of the other end joins by the power line of fus and three-phase linear motor;
Working procedure:
1) cold machine start-up course: linear electric motor are operated under electric motor mode, iron core disconnects, and normally-closed contact is closed, and normally opened contact disconnects, and linear electric motor are connected with driver, disconnect with load.By means of motor force, mover drives piston to do straight line motion, now a side cylinder of internal-combustion engine is in compression stroke, when piston movement is during to top dead center, be arranged on the oil sprayer inject high pressure fuel oil of cylinder head, the compressed burning of high pressure fuel, produce high-temperature high-pressure fuel gas, promote piston and move to lower dead center, start external work done, cold machine start-up course completes;
2) work-mode switching process: during piston arrives top dead center, oil inflame, gas cylinder temperature, pressure raise rapidly, temperature and pressure Sensor monitoring is to temperature signal T, pressure signal P, sensor signal is through analog-digital converter, analogue signal is converted to digital signal, when temperature T is greater than demarcation temperature T
0, and pressure P is greater than nominal pressure P
0time, digital integrated electronic circuit output high level analogue signal, the loop conducting of inductor coil, inductor coil energising, iron core is moved in adhesive, thereby drives normally-closed contact to disconnect, and normally opened contact is closed, and linear electric motor and driver disconnect, and are connected with load.Realize linear electric motor switching to generator mode by electric motor mode.
3) stable operation process: linear electric motor are operated under generator mode, two cylinder interior difference of free piston internal combustion engine are explosive combustion in turn, promotes piston assembly and carries out linear reciprocating motion; Piston is when top dead center, and the combustion gas pressure of explosion that high pressure fuel burning produces promotes piston and moves to lower dead center, carries out work done, by electric mover cutting magnetic induction line, produces electric energy output, the electric energy powering load of output.Because digital integrated electronic circuit has latch function, make iron core keep the state of adhesive, it is constant that linear electric motor keep generator mode, realizes stable operation process.
Described digital integrated electronic circuit annexation is: digital integrated electronic circuit is by one and a door (G
1), four AND NOT gate (G
2-G
5) and two analog-digital converter (Z
1-Z
2) by logical relation, connect to form.
with
be respectively Direct set input and direct reduction input end, they are at Low level effective, are used for arranging the original state of digital integrated electronic circuit, and Q end is the output terminal of digital integrated electronic circuit, arranges
make Q end be reset to 0.After completing initial setting up,
with
be arranged to high level.Temperature transducer, pressure transducer gather respectively temperature signal T and pressure signal P in cylinder, input digital integrated electronic circuit; In digital integrated electronic circuit 3 inside, temperature signal T and pressure signal P are first passed through analog-digital converter Z
1convert temperature digital signal and pressure on the number signal to; Temperature digital signal and pressure on the number signal process and door G
1after obtain output signal as AND NOT gate G
2one of them input signal, AND NOT gate G
2another input signal right and wrong door G
5output signal
aND NOT gate G
2output signal, as AND NOT gate G
3input signal; AND NOT gate G
2with AND NOT gate G
5output signal as AND NOT gate G
4input signal; Not gate G
4with AND NOT gate G
3output signal as AND NOT gate G
5input signal; AND NOT gate G
4output signal Q through analog-digital converter Z
2convert analogue signal to and be input to inductor coil.
Beneficial effect
1, the operating mode switching device of a kind of free piston linear motor of the present invention, by detecting cylinder temperature and pressure signal, be input to digital integrated electronic circuit, digital integrated electronic circuit output signal is controlled the adhesive of iron core, normally-closed contact is disconnected, normally opened contact is closed, linear electric motor and driver are disconnected, be connected with load, realized linear electric motor switching to generator mode by electric motor mode, guaranteed the steadily effectively transition of system starting process to stable operation process, and it is constant in stable operation, to maintain generator mode.
2, the operating mode switching device of a kind of free piston linear motor of the present invention, the A.C. contactor technology maturation of using, reliability is high, the advantage such as have that action is fast, working stability, long service life, volume are little, there are on the market numerous finished products available, cheap, be convenient to realize standardization and commercialization.Digital integrated electronic circuit technology is also very ripe, and digital integrated electronic circuit of the present invention is by common forming with door and AND NOT gate, and linking route is also very simple, cheap, is convenient to realize standardization and commercialization.
Accompanying drawing explanation
Fig. 1 is embodiment 1 schematic diagram;
Fig. 2 is digital integrated electronic circuit logic diagram.
In figure, 1-temperature transducer, 2-pressure transducer, 3-digital integrated electronic circuit, 4-static iron core, 5-inductor coil, the moving iron core of 6-, 7-Returnning spring, 8-normally-closed contact, 9-fus, 10-normally opened contact, 11-A.C. contactor connecting rod, 12-driver, 13-load
Embodiment
Below in conjunction with drawings and Examples 1, the present invention will be further described.
Embodiment 1
An operating mode switching device for free piston linear motor, it comprises free piston internal combustion engine and three-phase linear motor, also comprises operating mode switching device, as shown in Figure 1.
On the cylinder wall of free piston internal combustion engine, be furnished with temperature transducer 7, pressure transducer 8;
Described operating mode switching device comprises: A.C. contactor, digital integrated electronic circuit 3, fus 9, driver 12, load 13, and wherein A.C. contactor comprises: static iron core 4, inductor coil 5, moving iron core 6, Returnning spring 7, normally-closed contact 8, normally opened contact 10, A.C. contactor connecting rod 11;
Annexation: digital integrated electronic circuit 3 is connected with temperature transducer 1, pressure transducer 2; Digital integrated electronic circuit 3 forms loop with the inductor coil 5 being wrapped on static iron core 4; On the moving iron core 6 of static iron core 4 correspondences, be fixed with A.C. contactor connecting rod 11; Moving iron core 6 is connected with Returnning spring 7; A.C. contactor connecting rod 11 is connected with normally-closed contact 8, normally opened contact 10; The contact of normally-closed contact 8 one end is connected with driver 12, and the contact of the other end joins by fus 9 and the power line of three-phase linear motor; The contact of normally opened contact 10 one end is connected with load 13, and the contact of the other end joins by fus 9 and the power line of three-phase linear motor;
Working procedure:
1) cold machine start-up course: linear electric motor are operated under electric motor mode, iron core disconnects, and normally-closed contact is closed, and normally opened contact disconnects, and linear electric motor are connected with driver, disconnect with load.By means of motor force, mover drives piston to do straight line motion, now a side cylinder of internal-combustion engine is in compression stroke, when piston movement is during to top dead center, be arranged on the oil sprayer inject high pressure fuel oil of cylinder head, the compressed burning of high pressure fuel, produce high-temperature high-pressure fuel gas, promote piston and move to lower dead center, start external work done, cold machine start-up course completes;
2) work-mode switching process: during piston arrives top dead center, oil inflame, gas cylinder temperature, pressure raise rapidly, temperature and pressure Sensor monitoring is to temperature signal T, pressure signal P, sensor signal is through analog-digital converter, analogue signal is converted to digital signal, when temperature T is greater than demarcation temperature T
0, and pressure P is greater than nominal pressure P
0time, digital integrated electronic circuit output high level analogue signal, the loop conducting of inductor coil, inductor coil energising, iron core is moved in adhesive, thereby drives normally-closed contact to disconnect, and normally opened contact is closed, and linear electric motor and driver disconnect, and are connected with load.Realize linear electric motor switching to generator mode by electric motor mode.
3) stable operation process: linear electric motor are operated under generator mode, two cylinder interior difference of free piston internal combustion engine are explosive combustion in turn, promotes piston assembly and carries out linear reciprocating motion; Piston is when top dead center, and the combustion gas pressure of explosion that high pressure fuel burning produces promotes piston and moves to lower dead center, carries out work done, by electric mover cutting magnetic induction line, produces electric energy output, the electric energy powering load of output.Because digital integrated electronic circuit has latch function, make iron core keep the state of adhesive, it is constant that linear electric motor keep generator mode, realizes stable operation process.
As shown in Figure 2, digital integrated electronic circuit 3 is by one and a door (G for described digital integrated electronic circuit annexation
1), four AND NOT gate (G
2-G
5) and two analog-digital converter (Z
1-Z
2) by logical relation, connect to form.
with
be respectively Direct set input and direct reduction input end, they are at Low level effective, are used for arranging the original state of digital integrated electronic circuit, and Q end is the output terminal of digital integrated electronic circuit 3, arranges
make Q end be reset to 0.After completing initial setting up,
with
be arranged to high level.Temperature transducer 1, pressure transducer 2 gather respectively temperature signal T and pressure signal P in cylinder, input digital integrated electronic circuit 3; In digital integrated electronic circuit 3 inside, temperature signal T and pressure signal P are first passed through analog-digital converter Z
1convert temperature digital signal and pressure on the number signal to; Temperature digital signal and pressure on the number signal process and door G
1after obtain output signal as AND NOT gate G
2one of them input signal, AND NOT gate G
2another input signal right and wrong door G
5output signal
aND NOT gate G
2output signal, as AND NOT gate G
3input signal; AND NOT gate G
2with AND NOT gate G
5output signal as AND NOT gate G
4input signal; Not gate G
4with AND NOT gate G
3output signal as AND NOT gate G
5input signal; AND NOT gate G
4output signal Q through analog-digital converter Z
2convert analogue signal to and be input to inductor coil 5.
Described digital integrated electronic circuit working procedure: digital integrated electronic circuit 3 forms loop with the inductor coil 5 being wrapped on static iron core 4, the action of the controlled braking iron core 6 of output signal of digital integrated electronic circuit 3, realize adhesive or the disconnection of iron core, thereby the disconnection of controlling the contact being connected with moving iron core is with closed.T
0for combustion temperature calibration value.As T>=T
0time, T end is high level (1 signal); Otherwise T end is low level (0 signal), in like manner can obtain P end state.System starts, before action, to arrange
make Q end be reset to 0.From the logic diagram of digital integrated electronic circuit 3, can find out, Q end is output terminal, when input end T and P are that height is while allocating (1 signal), when Q end is high level (1 signal), the high analogue signal that allocates of digital integrated electronic circuit 3 output, in inductor coil 5, there is electric current to flow through, produce electromagnetic force, moving iron core 6 actions, drive 11 actions of A.C. contactor connecting rod, thereby normally-closed contact 8 is disconnected, normally opened contact 10 closures, linear electric motor and driver disconnect, and are connected with load, and linear electric motor switch to generator mode by electric motor mode; Once Q end is output as high level (1 signal) afterwards, the state of digital integrated electronic circuit 3 is by by the latches of digital integrated electronic circuit 3 inside, guarantee that digital integrated electronic circuit 3 outputs are always high level analogue signal, it is the state that iron core keeps adhesive, linear electric motor keep generator mode constant, until system quits work, arrange
make Q end be reset to 0, for system next time, start working and prepare.
Claims (2)
1. an operating mode switching device for free piston linear motor, comprises free piston internal combustion engine and three-phase linear motor, it is characterized in that: also comprise operating mode switching device; On the cylinder wall of free piston internal combustion engine, be furnished with temperature transducer (7), pressure transducer (8); Described operating mode switching device comprises: A.C. contactor, digital integrated electronic circuit (3), fus (9), driver (12), load (13), and wherein A.C. contactor comprises: static iron core (4), inductor coil (5), moving iron core (6), Returnning spring (7), normally-closed contact (8), normally opened contact (10), A.C. contactor connecting rod (11); Digital integrated electronic circuit (3) is connected with temperature transducer (1), pressure transducer (2); Digital integrated electronic circuit (3) forms loop with the inductor coil (5) being wrapped on static iron core (4); On the moving iron core (6) of static iron core (4) correspondence, be fixed with A.C. contactor connecting rod (11); Moving iron core (6) is connected with Returnning spring (7); A.C. contactor connecting rod (11) is connected with normally-closed contact (8), normally opened contact (10); The contact of normally-closed contact (8) one end is connected with driver (12), and the contact of the other end joins by fus (9) and the power line of three-phase linear motor; The contact of normally opened contact (10) one end is connected with load (13), and the contact of the other end joins by fus (9) and the power line of three-phase linear motor.
2. the operating mode switching device of a kind of free piston linear motor as claimed in claim 1, is characterized in that: described digital integrated electronic circuit annexation is: digital integrated electronic circuit (3) is by one and a door (G
1), four AND NOT gate (G
2-G
5) and two modulus switch (Z
1-Z
2) by logical relation, connect to form;
with
be respectively Direct set input and direct reduction input end, they are at Low level effective, are used for arranging the original state of digital integrated electronic circuit, and Q end is the output terminal of digital integrated electronic circuit (3), arranges
make Q end be reset to 0; After completing initial setting up,
with
be arranged to high level; Temperature transducer 1, pressure transducer (2) gather respectively temperature signal T and pressure signal P in cylinder, input digital integrated electronic circuit (3); In digital integrated electronic circuit (3) inside, temperature signal T and pressure signal P are first passed through modulus switch Z
1switch to temperature digital signal and pressure on the number signal; Temperature digital signal and pressure on the number signal process and door G
1after obtain output signal as AND NOT gate G
2one of them input signal, AND NOT gate G
2another input signal right and wrong door G
5output signal
aND NOT gate G
2output signal, as AND NOT gate G
3input signal; AND NOT gate G
2with AND NOT gate G
5output signal as AND NOT gate G
4input signal; Not gate G
4with AND NOT gate G
3output signal as AND NOT gate G
5input signal; AND NOT gate G
4output signal Q through modulus switch Z
2switch to analogue signal and be input to inductor coil (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530630.5A CN103590898B (en) | 2013-10-31 | 2013-10-31 | A kind of operating mode switching device of free piston linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530630.5A CN103590898B (en) | 2013-10-31 | 2013-10-31 | A kind of operating mode switching device of free piston linear motor |
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| Publication Number | Publication Date |
|---|---|
| CN103590898A true CN103590898A (en) | 2014-02-19 |
| CN103590898B CN103590898B (en) | 2015-12-02 |
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ID=50081187
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310530630.5A Active CN103590898B (en) | 2013-10-31 | 2013-10-31 | A kind of operating mode switching device of free piston linear motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194426A (en) * | 2016-07-26 | 2016-12-07 | 北京理工大学 | A kind of control method for free piston linear electricity generation system handoff procedure |
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| WO1993011352A1 (en) * | 1991-11-27 | 1993-06-10 | Sergei Dmitrievich Duhovlinov | Power installation |
| DE19815395A1 (en) * | 1997-05-12 | 1999-01-14 | Kazimir Grbavac | Direct energy conversion from linear movement to electric in boxer engine or flat engine |
| CN101473106A (en) * | 2006-06-20 | 2009-07-01 | 尤姆西通用电机公司 | Free-piston device and method for operating a free-piston device |
| CN102418600A (en) * | 2011-12-19 | 2012-04-18 | 北京理工大学 | Hydraulic high-speed free piston linear generator |
| CN103233815A (en) * | 2013-04-11 | 2013-08-07 | 北京理工大学 | Free piston linear generator based on waste heat utilization |
| CN103234759A (en) * | 2013-04-11 | 2013-08-07 | 北京理工大学 | Special test bench for internal combustion engine modules of free-piston internal combustion power generation power systems |
| CN203570425U (en) * | 2013-10-31 | 2014-04-30 | 北京理工大学 | Working mode switching device of free piston linear motor |
-
2013
- 2013-10-31 CN CN201310530630.5A patent/CN103590898B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993011352A1 (en) * | 1991-11-27 | 1993-06-10 | Sergei Dmitrievich Duhovlinov | Power installation |
| DE19815395A1 (en) * | 1997-05-12 | 1999-01-14 | Kazimir Grbavac | Direct energy conversion from linear movement to electric in boxer engine or flat engine |
| CN101473106A (en) * | 2006-06-20 | 2009-07-01 | 尤姆西通用电机公司 | Free-piston device and method for operating a free-piston device |
| CN102418600A (en) * | 2011-12-19 | 2012-04-18 | 北京理工大学 | Hydraulic high-speed free piston linear generator |
| CN103233815A (en) * | 2013-04-11 | 2013-08-07 | 北京理工大学 | Free piston linear generator based on waste heat utilization |
| CN103234759A (en) * | 2013-04-11 | 2013-08-07 | 北京理工大学 | Special test bench for internal combustion engine modules of free-piston internal combustion power generation power systems |
| CN203570425U (en) * | 2013-10-31 | 2014-04-30 | 北京理工大学 | Working mode switching device of free piston linear motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194426A (en) * | 2016-07-26 | 2016-12-07 | 北京理工大学 | A kind of control method for free piston linear electricity generation system handoff procedure |
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| CN103590898B (en) | 2015-12-02 |
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