CN1445923A - Converter type portable mixed engine generator - Google Patents
Converter type portable mixed engine generator Download PDFInfo
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- CN1445923A CN1445923A CN 03120778 CN03120778A CN1445923A CN 1445923 A CN1445923 A CN 1445923A CN 03120778 CN03120778 CN 03120778 CN 03120778 A CN03120778 A CN 03120778A CN 1445923 A CN1445923 A CN 1445923A
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Abstract
The invention provides an inverter type portable mixed engine generator comprising an engine 1, a generator 5 connected to the engine 1 to generate an AC output voltage, a full-wave rectification circuit 60 performing AC/DC conversion on the AC voltage from the generator 5, and a DC/AC converter 62 converting a DC voltage obtained by the full-wave rectification circuit 60 into an AC output; an electric power storage device 8 connected between the full-wave rectification circuit 60 and the DC/AC converter 62 via a DC/DC convertor 9; a control unit 64 capable of selecting any electric power supplier among the generator 5 or the electric power storage device 8. The inverter type portable mixed engine generator is provided with a low noise, is able to obtain a staring performance above a maximal output determined by an output of the engine and the generator, and enlarge charge capacitances of usage.
Description
Technical field
The present invention relates to a kind of converter type portable mixed engine generator.
Background technology
Past, known have carry generator with being connected to generating body that engine produces ac output voltage converter type as the electric power supply source, this converter type carries generator the output-parallel of a plurality of windings or series connection is obtained used interchange output.
Yet so existing carrying in the generator of engine, the low noise of engine changes into and is big problem.
In addition, output is determined as engine, then carries the output of generator of engine and determines that according to generating body efficient the degree of freedom of spendable load is restricted.
The present invention makes in view of this point, its purpose is to provide a kind of converter type portable mixed engine generator, but this converter type portable mixed engine generator is realized low noiseization, the above startability of maximum output can be obtained, the applied load capacity can be enlarged by engine output and generating body decision.
In addition, according to existing this inverter generator, independently a plurality of respectively output windings and the controllable silicon bridge-type rectification circuit corresponding with it are set and will switch to the supercircuit of stack in series or in parallel after this each rectification output smoothingization, for example, when needing to exchange 240V in overseas or exchanging the voltage of 120V, above-mentioned rectification output in parallel obtains to exchange output 120V by inverter, or the above-mentioned rectification output of connecting, obtain to exchange output 240V by inverter.
Therefore, according to this system,
1) by the output voltage of the rectification circuit that in series superposes, obtains high pressure (240V), the proof voltage of circuit block can be reduced, reduce cost, export normal pressure control simply.
2) in addition, owing to be not the switching under the high pressure, can improve generating efficiency so power loss is few.
3) will switch to the supercircuit of stack in series or in parallel behind each rectification output smoothing owing to being provided with, so can make and send the different product in ground is same design.
In addition, as another prior art, on the books in the technology of TOHKEMY 2000-278998 communique.
This motor driven welding machine is characterised in that: at a plurality of generating windings of being reeled by engine-driven generating body, when high engine speeds is turned round by the commutation circuit parallel connection winding that respectively generates electricity, in addition, in order when low engine speed is turned round, to replenish the amount that voltage descends that takes place, connect by commutation circuit, be transformed into the direct current source of welding current by rectification circuit, welding rod is supplied with in direct current output.In addition, the another of motor driven welding machine is characterised in that: the generating body winding is drawn as centre tap, high pressure is carried out rectification or low pressure is carried out rectification.
The voltage switching of a plurality of windings is all carried out in these two inventions by switch, thereby switches to high pressure or low pressure.
Yet, in such prior art, the voltage that carries out winding by switch switches, thereby translates into high pressure or low pressure, so, output voltage is as required split to close with switching and is used, and ease of use is poor, and switch by switch, during switching output discontinuous, characteristic changes, and may produce interference during switching manipulation.
Therefore, another object of the present invention is to provide a kind of generator, this generator is easy to use, can reduce the variation of characteristic and the generation of interference, but by simple structure be formed in the lower zone of engine speed also relative load carry out the electricity generation system that enough electric power is supplied with, can realize low noise and low burn-up rate.
In addition, existing this generator of engine has the generating body that is produced output voltage by motor driven, in order to control the rotating speed of engine, detect the output current of generating body by the current detector of being located at generator of engine inside, detect electric current according to this detected load, calculate engine speed as benchmark.
In addition, the influence under the high-temperature medium gas may make output performance and generating efficiency descend, and causes the output voltage of generating body to reduce.In this occasion, according to said apparatus, the revolution speed calculating portion of engine judges that load detects electric current and descends, and the rotating speed of engine is controlled to be the slow-speed of revolution.Like this, the output voltage of generator is more and more lower, output voltage can not be remained rated voltage, and becoming to drive load.In order to prevent this point, detect the output voltage of generating body by the voltage detector of being located at generator of engine inside, only when this detected detection voltage ratio rated voltage is low, calculate the correction rotating speed, this correction rotating speed is added to engine speed as benchmark, revise the engine speed that finishes thereby calculate, control engine speed, even also sustainable suitably generating when the generating efficiency of output current descends by the engine speed ground that the correction that calculates corresponding to this finishes.
Yet, in the prior art, in order to calculate the engine speed that can suitably continue to produce output voltage, the load that needs at least to detect generating body detects the current detector of electric current and the voltage detector of detection output voltage, for this reason, the structure of the system of generator of engine becomes complicated.Why needing this voltage detector, is in order to prevent because the output voltage that the influence of the febrile state of internal engine temperature may cause descends.
Therefore, the object of the present invention is to provide a kind of generator of engine, even the influence that this generator of engine rises in temperature makes the occasion that output performance and generating efficiency descend, the output voltage of generating body reduces, the suitable interchange of also sustainable generation output forms the single system structure of the voltage detector of the output voltage that does not need to detect generating body.
Summary of the invention
In order to address the above problem and to achieve the above object, the present invention constitutes as described below.
The converter type portable mixed engine generator of the 1st invention is characterised in that: have engine in sound proof box inside, be connected in this engine produce ac output voltage generating body, the alternating voltage from this generating body is carried out the full-wave rectifying circuit of AC/DC conversion and voltage stabilizing and will become exchange the DC/AC transformation component of exporting by the dc voltage conversion that this full-wave rectifying circuit obtains; Between above-mentioned full-wave rectifying circuit and above-mentioned DC/AC transformation component, be connected electrical storage device via the DC/DC current transformer; Has the control part that to select any the electric power supply source in above-mentioned generating body or the above-mentioned electrical storage device.
According to the 1st invention, can select any the electric power supply source in generating body or the electrical storage device, by with electrical storage device as the electric power supply source, can realize the low noiseization of engine.In addition, by electrical storage device being used as electric power supply source via the DC/DC current transformer, the hybridization of the generating output that can realize and be produced by engine power can obtain the above startability of maximum output by engine output and generating body decision, can enlarge the applied load capacity.
The converter type portable mixed engine generator of the 2nd invention also has such feature on the basis of the 1st invention: above-mentioned control part carries out making above-mentioned generating body and the above-mentioned electrical storage device both sides control of supply capability simultaneously.
According to the 2nd invention, by carrying out making generating body and the electrical storage device both sides control of supply capability simultaneously, can obtain the above startability of maximum output by engine output and generating body decision, can enlarge the applied load capacity.
The converter type portable mixed engine generator of the 3rd invention also has such feature on the basis of the 1st invention: above-mentioned control part carries out making the switching controls of the either party's supply capability in above-mentioned generating body and the above-mentioned electrical storage device.
According to the 3rd invention,, can carry out exporting accordingly with the applied load capacity by carrying out to make the switching controls of the either party's supply capability in generating body and the electrical storage device.
Also have such feature on the basis of converter type portable mixed engine generator any one invention in the 1st～3 of the 4th invention: above-mentioned control part is by making the economic control switch closure, corresponding to exchanging the above-mentioned engine speed of output control; By the economic control switch is disconnected, the rotating speed with engine before interchange output reaches rated current is controlled to be necessarily.
In the 4th invention, make the economic control switch closure, corresponding to exchanging output control engine speed, exchanging the occasion of exporting the light load that tails off, reduce the rotating speed of engine, realize low noise and low burn-up rate.In addition, the economic control switch is disconnected, the speed of gyration with engine before interchange output reaches rated current is controlled to be necessarily, thereby can carry out using accordingly with applied load.
Also have such feature on the basis of converter type portable mixed engine generator any one invention in the 1st～4 of the 5th invention: above-mentioned electrical storage device is connected to the charge coil of a part of being located at above-mentioned generating body or is located at the charge coil of the ignition system of engine.
According to the 5th invention, electrical storage device is charged by charge coil in engine operation process.
Also have such feature on the basis of converter type portable mixed engine generator any one invention in the 1st～5 of the 6th invention: above-mentioned electrical storage device is a double charge layer capacitor.
According to the 6th invention,, can carry out the charging of double charge layer capacitor by the motor driven of short time by using double charge layer capacitor.In addition, when the frequency of utilization under low noise environment is high, can be in the engine operation back of short time shutting engine down, supply capability in quietness.
The converter type portable mixed engine generator of the 7th invention also has such feature on the basis of the 1st invention: the generating body that the ac output voltage that a plurality of generations vary in size is set, connect full-wave rectifying circuit respectively at these each generating bodies, the connect outlet side of each full-wave rectifying circuit, stack is from the direct voltage of above-mentioned each full-wave rectifying circuit.
According to the 7th invention, the generating body of the ac output voltage that a plurality of generations vary in size is set, connect full-wave rectifying circuit respectively at these each generating bodies, in series superpose from the direct voltage of these each full-wave rectifying circuits, so, can obtain needed direct voltage incessantly to high turning circle at low turning circle, expansion is as the scope of the normal voltage output of generator, can keep engine speed lower in the few zone of load current, so, can realize low noiseization and low burn-up rateization.
The converter type portable mixed engine generator of the 8th invention also has such feature on the basis of the 7th invention: the voltage stabilizing circuit of the voltage stabilizing of the direct voltage after above-mentioned AC/DC conversion is carried out in the full-wave rectifying circuit side setting that is connected with the generating body that produces above-mentioned big ac output voltage.
According to the 8th invention, except above-mentioned effect, because the voltage stabilizing circuit of the voltage stabilizing of the direct voltage after the AC/DC conversion is carried out in the full-wave rectifying circuit side setting that is connected with the generating body that produces big ac output voltage, so, the stabilisation of the output voltage that can superpose by the voltage stabilizing circuit realization of smaller amounts.
The converter type portable mixed engine generator of the 9th invention also has such feature on the basis of the 1st invention: have the temperature detecting part of the temperature that detects sound proof box and the control part that input is controlled the rotating speed of above-mentioned engine by the detected temperature of this temperature detecting part as signal, this control part rises according to the above-mentioned sound proof box temperature inside of above-mentioned input, rising according to this temperature calculates the engine speed that the slippage of the ac output voltage of above-mentioned generating body is replenished, and controls above-mentioned engine.
According to the 9th invention, have the temperature detecting part of the temperature that detects sound proof box and the control part that input is controlled the rotating speed of above-mentioned engine by the detected temperature of this temperature detecting part as signal, this control part rises according to the above-mentioned sound proof box temperature inside of above-mentioned input, rise according to this temperature and to calculate the engine speed that the slippage of the ac output voltage of above-mentioned generating body is replenished, control above-mentioned engine, so, a kind of easy system construction can be provided, this easy system construction is in the generator of the structure that internal temperatures such as sound insulation type generator are easy to rise, can adjust to automatically and the corresponding engine speed of its use virtual condition, not reduce generating efficiency ground and continue to produce suitable interchange output.
The converter type portable mixed engine generator of the 10th invention also has such feature on the basis of the 9th invention: above-mentioned control part has in the relation of the rotating speed that is stored in load current and above-mentioned engine and the corresponding a plurality of characteristic electric current speed diagram storage parts of temperature, select suitable characteristic curve corresponding to rising from a plurality of characteristic curves that are stored in above-mentioned electric current speed diagram storage part, control the rotating speed of above-mentioned engine by the detected temperature of said temperature test section.
According to the 10th invention, above-mentioned control part has in the relation of the rotating speed that is stored in load current and above-mentioned engine and the corresponding a plurality of characteristic electric current speed diagram storage parts of temperature, from a plurality of characteristic curves that are stored in above-mentioned electric current speed diagram storage part, select suitable characteristic curve corresponding to rising by the detected temperature of said temperature test section, control the rotating speed of above-mentioned engine, so, except the effect of the 9th invention, the suitable characteristic curve that also has the accordingly stable generating efficiency of lasting maintenance and temperature, so, can adjust to and use the corresponding more engine speed of virtual condition automatically, not reduce generating efficiency ground and continue to produce suitable interchange output.
Description of drawings
Fig. 1 is the signal pie graph of converter type portable mixed engine generator.
Fig. 2 is for wanting the pie graph of portion.
Fig. 3 is the selection circuit diagram of electric power supply source.
Fig. 4 is the figure that the electric power supply source of electrical storage device is shown.
Fig. 5 is the control block diagram of control device.
Fig. 6 is the figure that the relation of the engine speed of occasion of economic control switch closure or disconnection and throttle opening and ac output current is shown.
Fig. 7 is the figure that the relation of the burn-up rate of occasion of economic control switch closure or disconnection and ac output current is shown.
Fig. 8 is the figure that the relation of direct voltage after the full-wave rectification and ac output current is shown.
Fig. 9 is the flow chart of air throttle control initial stage action.
Figure 10 is the flow chart of the control action of economic control switch.
Figure 11 is the circuit diagram of the inverter generator of another form of implementation of the present invention.
Figure 12 is the curve chart that the relation of direct voltage after the rectification of this form of implementation and engine speed is shown.
Figure 13 is the figure that the relation of direct voltage after the rectification of comparative example and engine speed is shown.
Figure 14 is the circuit diagram of the engine-type generator of another form of implementation of the present invention.
Figure 15 is the curve chart that the relation of control part input voltage after the temperature detection of this form of implementation and controller internal temperature is shown.
Figure 16 is the curve chart of this form of implementation, is the figure of the relation of the throttle opening of the occasion of the febrile state of generator of engine internal temperature and engine speed and AC output current.
Embodiment
Below, describe the form of implementation of converter type portable mixed engine generator of the present invention with reference to the accompanying drawings in detail.Fig. 1 is the signal pie graph of converter type portable mixed engine generator, Fig. 2 is for wanting the pie graph of portion, Fig. 3 is the selection circuit diagram of electric power supply source, Fig. 4 is the figure that the electric power supply source of electrical storage device is shown, Fig. 5 is the control block diagram of control device, Fig. 6 is the figure that the relation of the engine speed of occasion of economic control switch closure or disconnection and throttle opening and ac output current is shown, Fig. 7 is the figure that the relation of the burn-up rate of occasion of economic control switch closure or disconnection and ac output current is shown, Fig. 8 is the figure that the relation of direct voltage after the full-wave rectification and ac output current is shown, Fig. 9 is the flow chart of air throttle control initial stage action, and Figure 10 is the flow chart of the control action of economic control switch.
The formation of converter type portable mixed engine generator of the present invention at first, is described according to Fig. 1.Symbol 1 connects carburetor 2 and air filter 3 for being located at the engine of sound proof box at this engine 1, at this carburetor 2 stepping motor 4 is set, by driving this stepping motor 4, thus the control throttle opening.
At the generating body 5 of this engine 1 connection multipolar system, connect control device 6 at this generating body 5, supply with to exchange to load 7 from this control device 6 and export.
In addition, connect electrical storage device 8 via DC/DC current transformer 9, can select any the electric power supply source in generating body 5 or the electrical storage device 8 at control device 6.
In addition, connect economic control switch SW 1, power-assisted mode switch SW2 at control device 6, reach power source diverter switch SW3.
This control device 6 has full-wave rectifying circuit 60, electrolytic capacitor 61, DC/AC transformation component 62, filter circuit 63, reaches control part 64 as shown in Figure 2.Generating body 5 is connected to full-wave rectifying circuit 60, this full-wave rectifying circuit 60 is connected to DC/AC transformation component (inverter circuit) 62 via electrolytic capacitor 61, this DC/AC transformation component 62 is connected to filter circuit 63, from this filter circuit 63 to the load 7 output AC electric currents.In addition, be connected at the power coil 50 of the part of generating body 5 at control part 64, this power coil 50 becomes the device power supply in engine operation process.
In addition, the electrical storage device 8 that is made of storage battery is connected to DC/DC current transformer 9, and this DC/DC current transformer 9 prevents to be connected between full-wave rectifying circuit 60 and the electrolytic capacitor 61 with diode 22 via the anti-stream of electric current.
In addition, be connected at the charge coil 51 of the part of generating body 5 at electrical storage device 8, in engine operation process, charge by charge coil 51.In addition, electrical storage device 8 is connected to control part 64, the device power supply when becoming engine and not moving.In addition, electrical storage device 8 also can be connected to the charge coil that the ignition system of engine 1 has and charges.
In addition, be connected control part 64 with DC/AC transformation component 62, the output voltage detected value be input to this control part 64 according to output current detected value from current sensor 65 at DC/DC current transformer 9.According to these values, by control part 64 control DC/DC current transformer 9 and DC/AC transformation components 62.
By the driving of engine 1, drive generating body 5 and produce ac output voltages, from the ac output voltage of this generating body 5 by full-wave rectifying circuit (controllable silicon bridge-type rectification circuit) 60 rectifications after, by electrolytic capacitor 61 smoothings.Like this, use turning circle to obtain needed direct voltage in reality.
This direct voltage is removed high order harmonic component by filter circuit 63 formed interchange output by DC/AC transformation component 62 after, obtain needed interchange output.In addition, the output voltage of detection filter circuit 63 makes it turn back to control part 64, thereby can make output voltage stabilizationization.
Simultaneously, need the load 7 of startability in connection, relatively rated current increases the occasion of enough big load current in the short time, detects its increase ratio, or detects its absolute magnitude, provides control signal from control part 64 to DC/DC current transformer 9.Perhaps, start for DC/DC current transformer 9 is set like this, promptly, as the direct voltage (Vdc) that is right after behind the full-wave rectifying circuit 60 is an assigned voltage, then under this form of implementation, drop to 170V as shown in Figure 8 when following when this assigned voltage, be judged as the big and action of load, in addition, not start under the state bigger than 170V.That is, control by current detecting or voltage detecting.
This converter type portable mixed engine generator has the control part 64 that can select any the electric power supply source in generating body 5 or the electrical storage device 8, as shown in Figure 3, carry out following such action by the power-assisted mode switch SW2 that is connected to control part 64, power source diverter switch SW3.
Promptly, when power-assisted mode switch SW2 is closed, AND circuit 640 via control part 64 drives engine power generation body control part 641, electrical storage device DC/DC current transformer control part 642, carries out making generating body 5 and the electrical storage device 8 both sides control of supply capability simultaneously.
For example, be the generating side, only depend on the generating side can not obtain enough electric power in the overload zone and supply with, replenish electric power from electrical storage device 8 as main electric power supply source.In order to prevent the overdischarge of electrical storage device 8, the occasion of using below common specified output can finish to supply with from the electric power of electrical storage device 8.
Like this,, can obtain the above startability of maximum output, enlarge the applied load capacity by engine output and generating body decision by making generating body 5 and the electrical storage device 8 both sides control of supply capability simultaneously.
In addition, when power-assisted mode switch SW2 disconnects, by the closure of power source diverter switch SW3, disconnect AND circuit 643,644 via control part 64 and drive in engine power generation body control parts 641, the electrical storage device DC/DC current transformer control part 642 any, carry out making the switching controls of either party's supply capability of generating body 5 and electrical storage device 8.
Promptly, when power-assisted mode switch SW2 disconnects,, then drive electrical storage device DC/DC current transformer control part 642 via AND circuit 643 as power source diverter switch SW3 closure (selecting the electrical storage device side), engine 1 is stopped, and the power supply unit of control device 6 switches to electrical storage device 8 from generating body 5.
In addition, when power-assisted mode switch SW2 disconnects, disconnect (selecting the engine example), then drive engine power generation body control part 641, do not carry out electric power this moment and supply with from the electrical storage device side by AND circuit 644 as power source diverter switch SW3.
Like this, the switching controls of the either party's supply capability by carrying out making generating body 5 and electrical storage device 8 can carry out exporting accordingly with the applied load capacity.
In addition, electrical storage device 8 by the formation that storage battery is connected in series, increases to the input voltage of DC/DC current transformer 9 as shown in Figure 4.Under this form of implementation, 6 of the storage battery of 12V series connection, the voltage that is input to DC/DC current transformer 9 is 72V, input voltage increases.
Like this, can reduce the current capacity of DC/DC current transformer 9, so, can reduce the thermal loss of 1 side, can realize the miniaturization of DC/DC current transformer 9, realize that lightweight also reduces cost.
In this form of implementation, be right after direct voltage and output current behind the full-wave rectifying circuit 60 by detection, judge whether load is big, control DC/DC current transformer 9, but be not limited thereto, for example in the occasion of load for pump etc., after rigidly connecting logical switch, judge that load is big, does not detect curtage, also can will connect this state of switch, make DC/DC current transformer action official hour as triggering signal.
In addition, electrical storage device 8 uses storage batterys, but is not limited to storage battery, can use storage battery or equal electrical storage device for example double charge layer capacitor as the energy.As electrical storage device 8,, can carry out the charging of double charge layer capacitor by the motor driven of short time in the occasion of using double charge layer capacitor.When the frequency of utilization under the low noise environment is high, can after the engine operation of short time, engine be stopped, supply capability in quietness.
In addition, the engine speed test section 645 of the rotating speed of detection of engine 1 as shown in Figure 5 is set at the control part 64 of control device 6, simultaneously, as shown in Figure 6 storage the has been set electric current speed diagram storage part 646 of characteristic connects economic control switch SW 1 at this electric current speed diagram storage part 646.
This engine speed test section 645 and electric current speed diagram storage part 646 are connected to air throttle control operational part 647, and this air throttle control operational part 647 is connected to the motor driven portion 648 of control step motor 4.
Like this, when economic control switch SW 1 closure,, become the engine speed (throttle opening) of regulation and the AC output current of regulation and control motor driven portions 648 by air throttle control operational part 647 (load current) according to the solid line characteristic curve among Fig. 6.
In addition, when economic control switch SW 1 disconnects, according to the characteristic curve of the dotted line among Fig. 6, become the rotating speed (throttle opening) of the engine of regulation and the AC output current of regulation and control motor driven portions 648 by air throttle control operational part 647 (load current).
Fig. 7 illustrates the relation of burn-up rate and AC output current, and economic control switch SW 1 becomes when closure by the such state shown in the solid line, and in addition, economic control switch SW 1 becomes the state shown in the dotted line when disconnecting.
Like this, the control part 64 of control device 6 provides the engine speed of the signal of telecommunication to become regulation, makes throttle opening to stepping motor 4 is the aperture of regulation, as Fig. 9 and control step motor 4 as shown in Figure 10.
The air throttle of Fig. 9 control origination action is, step a1 make air throttle towards evolution to action, opening throttle before engine speed reaches more than the 1500rpm (step a2).Engine speed is when 1500rpm is above, and making engine speed is that (step a3) set on 2800rpm ground, and the timer that carries out alternating current output beginning is set at 0.5 second (step a4), carries out the output of alternating current.
The control action of the economic control switch of Figure 10 is set the electric current rotating speed according to the electric current speed diagram, begin timer (step b1) when setting low temperature, when the extraneous gas temperature is in below 0 ℃, transfer to step b2, the high speed that forcibly engine speed is maintained 3800rpm reaches several minutes, carries out the output of alternating current.
On the other hand,, when low temperature, begin timer when not setting, carry out the computing (step b3) of electric current rotating speed, set engine speed (step b4) at step b1, in the occasion of economic control switch SW 1 closure, the output that exchanges (step b5).
On the other hand, the occasion that disconnects in economic control switch SW 1 during setting below engine speed is in 3600rpm, is set forcibly at 3600rpm, carries out the output (step b6) of alternating current.
Like this, economic control switch SW 1 is for switching the switch of 2 characteristics as shown in Figure 7, and in the occasion with economic control switch SW 1 closure, the AC output current reduces (light load), reduces engine speed, realizes the low burn-up rate of low noise.
In addition, in the occasion that economic control switch SW 1 disconnects, the scope at the AC output current from 0 ampere to rated current is controlled to be engine speed necessarily, and it may have good ease of use according to the characteristic of applied load.For example, exist to use the occasion etc. of the electric grinder of frequent change of load electric current.
Figure 11～Figure 13 is the figure that another form of implementation of the present invention is shown.This embodiment is provided with a plurality of generating bodies.Other formation is identical with above-mentioned explanation, so, omit its explanation.
As shown in Figure 11, connect the 1st generating body 115 and the 2nd generating body 116 that the back will describe in detail at engine (not shown), same with the foregoing description, connect control device at these the 1st, the 2nd generating bodies 115,116, supply with interchange output from this control device to load device (not shown), simultaneously, connect the economic control switch at this control device.
Above-mentioned the 1st generating body 115 and the 2nd generating body 116 produce the ac output voltage ground that varies in size and constitute, and the 1st generating body 115 produces than the 2nd generating body 116 bigger ac output voltage ground and constitutes.
The 1st generating body 115 is connected to the 1st full-wave rectifying circuit 126, the 2 generating bodies 116 and is connected to the 2nd full-wave rectifying circuit 127.These the 1st, the 2nd full-wave rectifying circuits 126,127 carry out AC/DC conversion ground to the ac output voltage from the 1st, the 2nd generating body 115,116 respectively and constitute, and connect the voltage stabilizing circuit 128 that carries out constant voltageization at its 1st full-wave rectifying circuit 126.
The outlet side of these the 1st, the 2nd full-wave rectifying circuits 126,127 is such formation: by electrolytic capacitor 129 series connection, simultaneously, be connected to DC/AC transformation component (inverter circuit) 130, to the direct voltage of these DC/AC transformation component 130 outputs from the stack of the 1st, the 2nd full-wave rectifying circuit 126,127, the dc voltage conversion that will be superposeed by this DC/AC transformation component 130 becomes to exchange output.
This DC/AC transformation component 130 is connected to filter circuit 131, removes the high order harmonic component composition by this filter circuit 131 and obtains needed interchange output.Export the AC output current from this filter circuit 131 to above-mentioned load device.
As shown in figure 12, for the 1st generating body 115, direct voltage after the rectification that is obtained by the 1st full-wave rectifying circuit 126 of the 1st generating body 115 monomers is such shown in the characteristic curve A shown in solid line with the relation of engine speed, for the 2nd generating body 116, direct voltage after the rectification that is obtained by the 2nd full-wave rectifying circuit 127 of the 2nd generating body 116 monomers is such shown in the characteristic curve B shown in a chain-dotted line with the relation of engine speed, compare with the 1st generating body 115, demonstrate the less characteristic of direct voltage.
In addition, 128 pairs of direct voltages from the 1st full-wave rectifying circuit 126 of voltage stabilizing circuit carry out phase control, characteristic curve A among Figure 12 is become shown in characteristic curve A1 shown in 2 chain-dotted lines control like that.Like this, the direct voltage control of stack from each direct voltage acquisition of two all-wave rectification circuits 126,127 is become among Figure 12 by the C of characteristic curve shown in the dotted line.
As shown in figure 11, control part 132 is set, is connected to filter circuit 131, DC/AC transformation component 130.
Below, its effect is described.
When driving engine, the ac output voltage that varies in size by the 1st, the 2nd generating body 115,116, from the ac output voltage of the 1st, the 2nd generating body 115,116 respectively by after 127 rectifications of the 1st full-wave rectifying circuit (three-phase mixing bridge type circuit) the 126, the 2nd full-wave rectifying circuit (three-phase full wave rectifier circuit), by electrolytic capacitor 129 smoothings.
At this moment, the outlet side series connection of two all-wave rectification circuits 126,127, so, direct voltage stack from two all-wave rectification circuits 126,127, obtain direct voltage shown in the characteristic curve C such shown in the dotted line among Figure 12, at this, under engine speed becomes state more than 2500 (rpm), use in the rotary speed area in reality to obtain needed direct voltage (204Vdc).By the way, in order to generate the alternating voltage of 120V, need the direct voltage of 204V.
When engine speed when 2500 (rpm) are above, carry out phase control by 128 pairs the 1st full-wave rectifying circuits of voltage stabilizing circuit 126, the direct voltage of stack keeps the stable state of 204V like that shown in the characteristic curve C of Figure 12.Like this, in the wide region of high rotating speed (6000rpm), can obtain the galvanic current pressure in the slow-speed of revolution (2500rpm).
In such occasion, direct voltage from two all-wave rectification circuits 126,127 is no more than 204V, so, two all-wave rectification circuits 126,127 are not for cutting out, voltage can be supplied to the two ends of electrolytic capacitor 129, can obtain galvanic current up to high rotating speed (6000rpm) and press, simultaneously, the proof voltage that can keep lower electronic unit is realized cost degradation.In addition, in the system of the alternating voltage that generates 120V, the direct voltage of the direct current by obtaining 204V, sinusoidal wave AC output can distortion.
In addition, by the 1st, the 2nd generating body 115,116 of the ac output voltage that varies in size is set, only control by 128 pairs of direct voltages that produce the 1st generating body 115 sides of big ac output voltage of voltage stabilizing circuit, the stable DC voltage that can obtain to stipulate, need not carry out phase control by 128 pairs of all generating bodies of voltage stabilizing circuit, so, structure is simplified.
As 2 generating bodies of the ac output voltage that identical size takes place are set, by the voltage stabilization circuit side of direct voltage from them is carried out phase control, then as shown in Figure 13, at the current/voltage of 4000 (rpm) to the setting that can not obtain to superpose between 6000 (rpm).
Promptly, when when the slow-speed of revolution (2500rpm) obtains the direct voltage (204V) of stack, direct voltage from each generating side needs 102V respectively, and this characteristic curve must use 2 generating bodies with big slope characteristic to a certain extent as being shown in D, E.In addition, for the dc voltage stability that makes stack at 204V, when only phase control is carried out on a side generating side, the occasion of control is shown in characteristic curve D, the occasion of not controlling is shown in characteristic curve E.Like this, like that, a side full-wave rectifying circuit cuts out, not to the two ends of electrolytic capacitor service voltage shown in characteristic curve D.
Like this, need voltage stabilizing circuit be set, carry out phase control respectively, cause cost to increase, and make control circuit complicated each full-wave rectifying circuit.
This direct voltage is removed high order harmonic component by filter circuit 131 after being transformed into interchange output by DC/AC transformation component 130, obtains needed interchange output.In addition, the output voltage of filter circuit 131 is detected, make it turn back to control part 132, thereby can make output voltage stabilizationization.
The output voltage here after the rectification, can obtain the direct voltage (204V) of required size as described above, so can obtain the little sinusoidal AC output of distortion factor.
Like this, the scope of exporting as the normal voltage of generator (voltage control zone) enlarges, and can keep engine speed lower in the few zone of load current.Therefore, can realize low noiseization and low burn-up rateization.
In such occasion, owing to do not switch by switch as before, so, export discontinuous phenomenon when not switching, but suppression characteristic changes or disturb during switching manipulation.
A plurality of generating bodies 115,116 by preparing different outputs also are provided with the improvement of so simple structure such as the 1st, the 2nd full-wave rectifying circuit 126,127, can obtain electric stable properties.
In above-mentioned form of implementation, use 2 generating bodies 115,116, but be not limited thereto, also can be more than 3, simultaneously, can use voltage stabilizing circuit on the generating side of these any amount, carry out the control of any number.
Figure 14～Figure 16 is the figure that another form of implementation of the present invention is shown.This embodiment is provided with temperature detecting part.Other structure is identical with above-mentioned explanation, so, omit its explanation.
Control device 217 as shown in Figure 14, connect full-wave rectifying circuit 228 at multipolar system generating body 216, this full-wave rectifying circuit 228 is connected to DC/AC transformation component (inverter circuit) 230 via electrolytic capacitor 229, this DC/AC transformation component 230 is connected to filter circuit 231, and the AC electric current outputs to load device (not shown) from this filter circuit 231.
In addition, connect control part 240 at this DC/AC transformation component 230, connect the revolution test section 222 that is connected with the engine revolution coil 42 that on the part of above-mentioned multipolar system generating body 216, is provided with at this control part 240, simultaneously, connect the Temperature Detector 226 that is provided with thermosensitive resistor and circuit 251 via interface with temperature characterisitic.Detect the temperature of sound proof box by this Temperature Detector 226.In addition, this control part 240 is from current sensor 241 input load currents, according to this load current, by control part 240 control DC/AC transformation components 230.In addition, similarly to Example 1, storage is shown in such characteristic of Fig. 6 and Figure 16 in electric current speed diagram storage part, connects economic control switch 219 at this electric current speed diagram storage part.
This engine revolution test section 222, electric current speed diagram storage part and temperature detecting part 226 are connected to air throttle control operational part (not shown), and this air throttle control operational part is connected to the motor driven portion (not shown) that stepping motor is controlled.
Like this, when economic control switch 219 closures,, become the benchmark engine speed (throttle opening) of regulation and the AC output current of regulation and calculate by air throttle control operational part (load current) according to the characteristic curve of the solid line among Fig. 6.In addition, to become voltage signal by temperature detecting part 226 detected temperature inversions, select suitable characteristic curve according to this voltage signal from a plurality of characteristic curves that are stored in solid line electric current speed diagram storage part, Figure 16, become the engine speed (throttle opening) of the suitable regulation of control device 217 internal temperatures and the AC output current of regulation are controlled motor driven portion by air throttle control operational part (load current).
In addition, when economic control switch 219 disconnects,, become the engine speed (throttle opening) of regulation and the AC output current of regulation and control motor driven portion by air throttle control operational part (load current) according to the characteristic curve of the dotted line among Fig. 6.
For the relation of burn-up rate and AC output current, when economic control switch 219 closures, become state such shown in the solid line of Fig. 7, in addition, when economic control switch 219 disconnects, become state such shown in the dotted line.
The following describes its effect.
Driving by engine 211, multipolar system generating body 216 is driven, produce ac output voltage, from the ac output voltage of this multipolar system generating body 216 by full-wave rectifying circuit (controllable silicon bridge-type rectification circuit) 228 rectifications after, level and smooth by electrolytic capacitor 229.Can use rotary speed area to obtain needed direct voltage in reality thus.
This direct voltage is removed high order harmonic component by filter circuit 31 after being transformed to interchange output by DC/AC transformation component 230, obtains needed interchange output.
In addition, at above-mentioned ac output current is the occasion of light load, provide the signal of telecommunication of the engine speed that becomes regulation to the stepping motor of being located at carburetor, make the throttle opening of stepping motor become the throttle opening of regulation, thereby have the characteristic of the low burn-up rate of low noise.
This be because, in the occasion that makes economic control switch 219 closures that are connected to control device 217, detect from the load current of multipolar system generating body 216 outputs by current sensor 241, according to from these current sensor 241 detected load currents, in air throttle control operational part value of such AC output current shown in the solid line from the Fig. 6 that is stored in electric current speed diagram storage part that the part by control part 240 constitutes, press the characteristic curve of engine speed value, calculate the benchmark engine speed of regulation.
By thermosensitive resistor and circuit 251 detection control apparatuss 217 temperature inside with temperature characterisitic of being located at temperature detecting part 226.According to by these thermosensitive resistor and circuit 251 detected temperature for example among Figure 15 by shown in the solid line like that, as control device 217 internal temperatures is 25 ℃, then the control part input voltage value of 2.3V is input to the air throttle control operational part of control part 240, as control device 217 internal temperatures is 90 ℃, then the control part input voltage value of 5.0V is input to the air throttle control operational part of control part 240.
As temperature is 25 ℃, then is judged as normal temperature at air throttle control operational part, selects to be stored in the characteristic figure of normal temperature of the Figure 16 in the electric current speed diagram storage part, according to this characteristic curve control motor driven portion.
Then, because the influence that the temperature of sound proof box rises descends output performance and generating efficiency, the output voltage of generating body 216 may descend, so, increase engine speed according to the control part input voltage of its input, the amount of the decline of the output voltage of generating body 216 is replenished.That is, when temperature rises to 90 ℃, be judged as when hot by air throttle control operational part, the characteristic figure when selecting to be stored in Figure 16 hot of electric current speed diagram storage part is according to this characteristic curve control motor driven portion.
Like this, by Temperature Detector 226 detection control apparatuss 217 temperature inside, calculate engine speed based on this detected temperature, control is to each output current and each temperature proper engine rotating speed, thereby in the generator of the structure that internal temperatures such as sound insulation type generator are easy to rise, can adjust to automatically and the corresponding engine speed of its use virtual condition, not reduce generating efficiency ground and continue to produce suitable interchange output.
In addition, do not detect the decline of the output voltage that influence that temperature that output voltage can prevent sound proof box rises causes, can form the easy system construction that does not need voltage detector.
In above-mentioned form of implementation, at control device 217 Temperature Detector 226 is set, the febrile state of detection control apparatus 217 interior media gas temperatures, but be not limited thereto, in the soundproof type engine generator, airtight interior temperature distribution is more even, so, for example also can realize above-mentioned effect by generating body stator coil portion temperature etc.
In addition, as control mode, in electric current speed diagram storage portion stores 2 characteristic curves, corresponding to temperature it is selectively controlled, but is not limited thereto, can be with unlimited characteristic curve as figure storage.In addition, except that the mode of selectivity characteristic curve, also can add the corresponding rotating speed of ratio that rises with temperature, control at any time in the engine speed that becomes benchmark.
As described above, in the 1st invention, can select any the electric power supply source in generating body or the electrical storage device, by with electrical storage device as the electric power supply source, can realize the low noiseization of engine.In addition, by electrical storage device being used as electric power supply source via the DC/DC current transformer, the hybridization of the generating output that can realize and be produced by engine power can obtain the above startability of maximum output by engine output and generating body decision, can enlarge the applied load capacity.
In the 2nd invention, carry out making generating body and the electrical storage device both sides control of supply capability simultaneously, can obtain the above startability of maximum output by engine output and generating body decision, can enlarge the applied load capacity.
In the 3rd invention, the switching controls of the either party's supply capability by carrying out making generating body and electrical storage device can carry out exporting accordingly with the applied load capacity.
In the 4th invention, make the economic control switch closure, corresponding to exchanging output control engine speed, exchanging the occasion of exporting the light load that tails off, reduce the rotating speed of engine, realize low noise and low burn-up rate.In addition, the economic control switch is disconnected, the rotating speed with engine before interchange output reaches rated current is controlled to be necessarily, thereby can carry out using accordingly with applied load.
In the 5th invention, electrical storage device is charged by charge coil in engine operation process.
In the 6th invention,, can carry out the charging of double charge layer capacitor by the motor driven of short time by using double charge layer capacitor.In addition, when the frequency of utilization under low noise environment is high, can be in the engine operation back of short time shutting engine down, supply capability in quietness.
According to the 7th invention, the generating body of the ac output voltage that a plurality of generations vary in size is set, connect full-wave rectifying circuit respectively at these each generating bodies, in series superpose from the direct voltage of these each full-wave rectifying circuits, so, can obtain needed direct voltage incessantly to high turning circle at low turning circle, expansion is as the scope of the normal voltage output of generator, can keep engine speed lower in the few zone of load current, so, can realize low noiseization and low burn-up rateization.
According to the 8th invention, except above-mentioned effect, because the voltage stabilizing circuit of the voltage stabilizingization of the direct voltage after the AC/DC conversion is carried out in the full-wave rectifying circuit side setting that is connected with the generating body that produces big ac output voltage, so, the stabilisation of the output voltage that can superpose by the voltage stabilizing circuit realization of smaller amounts.
According to the 9th invention, have the temperature detecting part of the temperature that detects sound proof box and the control part that input is controlled the rotating speed of above-mentioned engine by the detected temperature of this temperature detecting part as signal, this control part rises according to the above-mentioned sound proof box temperature inside of above-mentioned input, rise according to this temperature and to calculate the engine speed that the slippage of the ac output voltage of above-mentioned generating body is replenished, control above-mentioned engine, so, a kind of easy system construction can be provided, this easy system construction is in the generator of the structure that internal temperatures such as sound insulation type generator are easy to rise, can adjust to automatically and the corresponding engine speed of its use virtual condition, not reduce generating efficiency ground and continue to produce suitable interchange output.
According to the 10th invention, above-mentioned control part has in the relation of the rotating speed that is stored in load current and above-mentioned engine and the corresponding a plurality of characteristic electric current speed diagram storage parts of temperature, from a plurality of characteristic curves that are stored in above-mentioned electric current speed diagram storage part, select suitable characteristic curve corresponding to rising by the detected temperature of said temperature test section, control the rotating speed of above-mentioned engine, so, except the effect of the 9th invention, the suitable characteristic curve that also has the accordingly stable generating efficiency of lasting maintenance and temperature, so, can adjust to and use the corresponding more engine speed of virtual condition automatically, not reduce generating efficiency ground and continue to produce suitable interchange output.
Claims (10)
1. converter type portable mixed engine generator is characterized in that: have engine in sound proof box inside, be connected in this engine produce ac output voltage generating body, the alternating voltage from this generating body is carried out the full-wave rectifying circuit of AC/DC conversion and will be become to exchange the DC/AC transformation component of output by the dc voltage conversion that this full-wave rectifying circuit obtains; Between above-mentioned full-wave rectifying circuit and above-mentioned DC/AC transformation component, be connected electrical storage device via the DC/DC current transformer; Has the control part that to select any the electric power supply source in above-mentioned generating body or the above-mentioned electrical storage device.
2. converter type portable mixed engine generator according to claim 1 is characterized in that: above-mentioned control part carries out making simultaneously the control of above-mentioned generating body and above-mentioned electrical storage device both sides supply capability.
3. converter type portable mixed engine generator according to claim 1 is characterized in that: above-mentioned control part carries out making the switching controls of the either party's supply capability in above-mentioned generating body and the above-mentioned electrical storage device.
4. according to any one described converter type portable mixed engine generator in the claim 1～3, it is characterized in that: above-mentioned control part is by making the economic control switch closure, corresponding to exchanging the above-mentioned engine speed of output control; By the economic control switch is disconnected, the rotating speed with above-mentioned engine before interchange output reaches rated current is controlled to be necessarily.
5. according to any one described converter type portable mixed engine generator in the claim 1～4, it is characterized in that: above-mentioned electrical storage device is connected to the charge coil of a part of being located at above-mentioned generating body or is located at the charge coil of the ignition system of engine.
6. according to any one described converter type portable mixed engine generator in the claim 1～5, it is characterized in that: above-mentioned electrical storage device is a double charge layer capacitor.
7. converter type portable mixed engine generator according to claim 1, it is characterized in that: the generating body that the ac output voltage that a plurality of generations vary in size is set, connect above-mentioned full-wave rectifying circuit respectively at this each generating body, the connect outlet side of this each full-wave rectifying circuit, stack is from the direct voltage of above-mentioned each full-wave rectifying circuit.
8. converter type portable mixed engine generator according to claim 7 is characterized in that: the voltage stabilizing circuit of the voltage stabilizing of the direct voltage after above-mentioned AC/DC conversion is carried out in the full-wave rectifying circuit side setting that is connected with the generating body that produces above-mentioned big ac output voltage.
9. converter type portable mixed engine generator according to claim 1, it is characterized in that: have the temperature detecting part of the temperature that detects sound proof box and the control part that input is controlled the rotating speed of above-mentioned engine by the detected temperature of this temperature detecting part as signal, this control part rises according to the above-mentioned sound proof box temperature inside of above-mentioned input, rising according to this temperature calculates the engine speed that the slippage of the ac output voltage of above-mentioned generating body is replenished, and controls above-mentioned engine.
10. converter type portable mixed engine generator according to claim 9, it is characterized in that: above-mentioned control part has in the relation of the rotating speed that is stored in load current and above-mentioned engine and the corresponding a plurality of characteristic electric current speed diagram storage parts of temperature, select suitable characteristic curve corresponding to rising from a plurality of characteristic curves that are stored in above-mentioned electric current speed diagram storage part, control the rotating speed of above-mentioned engine by the detected temperature of said temperature test section.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP078944/2002 | 2002-03-20 | ||
| JP2002078944A JP3941927B2 (en) | 2002-03-20 | 2002-03-20 | Inverter type hybrid engine portable generator |
| JP2002086027A JP2003284397A (en) | 2002-03-26 | 2002-03-26 | Inverter-controlled generator |
| JP086027/2002 | 2002-03-26 | ||
| JP2002118763A JP4079213B2 (en) | 2002-04-22 | 2002-04-22 | Engine generator |
| JP118763/2002 | 2002-04-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1445923A true CN1445923A (en) | 2003-10-01 |
| CN1254005C CN1254005C (en) | 2006-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03120778 Expired - Fee Related CN1254005C (en) | 2002-03-20 | 2003-03-19 | Converter type portable mixed engine generator |
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| Country | Link |
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| CN (1) | CN1254005C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444514C (en) * | 2007-02-16 | 2008-12-17 | 吴德峰 | Converse speed regulation apparatus of generator and control method |
| CN102097849A (en) * | 2011-02-11 | 2011-06-15 | 蒋小平 | Electric energy recovery unit of inductor for electromobile with direct current (DC) machine |
| CN102237707A (en) * | 2010-05-06 | 2011-11-09 | 本田技研工业株式会社 | Output control device for hybrid engine-driven power generator |
| CN106533288A (en) * | 2016-07-27 | 2017-03-22 | 襄阳航力机电技术发展有限公司 | Frequency conversion energy saving generating set |
| CN110979223A (en) * | 2018-09-30 | 2020-04-10 | 上海汽车集团股份有限公司 | Generator noise control method and device |
-
2003
- 2003-03-19 CN CN 03120778 patent/CN1254005C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444514C (en) * | 2007-02-16 | 2008-12-17 | 吴德峰 | Converse speed regulation apparatus of generator and control method |
| CN102237707A (en) * | 2010-05-06 | 2011-11-09 | 本田技研工业株式会社 | Output control device for hybrid engine-driven power generator |
| CN102237707B (en) * | 2010-05-06 | 2014-11-05 | 本田技研工业株式会社 | Output control device for hybrid engine-driven power generator |
| CN102097849A (en) * | 2011-02-11 | 2011-06-15 | 蒋小平 | Electric energy recovery unit of inductor for electromobile with direct current (DC) machine |
| CN102097849B (en) * | 2011-02-11 | 2013-11-06 | 蒋小平 | Electric energy recovery unit of inductor for electromobile with direct current (DC) machine |
| CN106533288A (en) * | 2016-07-27 | 2017-03-22 | 襄阳航力机电技术发展有限公司 | Frequency conversion energy saving generating set |
| CN106533288B (en) * | 2016-07-27 | 2019-04-16 | 襄阳航力机电技术发展有限公司 | A kind of energy-saving and frequency-variable generating set |
| CN110979223A (en) * | 2018-09-30 | 2020-04-10 | 上海汽车集团股份有限公司 | Generator noise control method and device |
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|---|---|
| CN1254005C (en) | 2006-04-26 |
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