CN205356210U - Generator and start control system thereof - Google Patents
Generator and start control system thereof Download PDFInfo
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- CN205356210U CN205356210U CN201521043975.9U CN201521043975U CN205356210U CN 205356210 U CN205356210 U CN 205356210U CN 201521043975 U CN201521043975 U CN 201521043975U CN 205356210 U CN205356210 U CN 205356210U
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Abstract
The utility model discloses a start control system, include: an alternating current carries out the rectification to be handled for being directed at two secondary winding outputs, and export galvanic secondary winding rectifier circuit, an output circuit for being based on the control signal of control circuit output adjusts the excitation current's in the excitation coil size, a power supply circuit for being control circuit provides the power, a sampling circuit for being directed at the output voltage of generator samples, a control circuit and being used for when the generator inserts capacitive load for exporting control signal to output circuit, through the electric current of formation in the control excitation coil with original excitation current opposite direction, control the compensating circuit of excitation current's size. This system can produce an electric current opposite with original excitation current in the excitation coil after inserting capacitive load, avoided the excitation current increase to the condition of having avoided the output voltage increase appears, causes the harm can for driven capacitive load, the utility model also discloses a generator.
Description
Technical field
This utility model relates to electromotor and starts control field, particularly relates to a kind of electromotor and opens autocontrol system.
Background technology
Nowadays, gasoline engine generator is widely used in all trades and professions, and the stand-by power supply being used as small portable is powered.Gasoline engine generator is usually used in driving capacitive load, such as LED, Internet bar's computer etc., but when gasoline engine generator drives capacitive load, phase shift effect due to electric capacity, creating an electric current with former exciting current homophase in magnet exciting coil, thus causing that exciting current increases, output voltage is out of control to be uprised, can cause damage to powered capacitive load, even can burn electrical appliance due to too high voltage.
Therefore, how a kind of electromotor that can solve the problem that the problems referred to above is provided and to open autocontrol system be the problem that those skilled in the art are presently required solution.
Utility model content
The purpose of this utility model is to provide one and opens autocontrol system, after accessing capacitive load, an electric current contrary with original exciting current can be produced in magnet exciting coil, avoid exciting current to increase, thus the situation that after avoiding access capacitive load, output voltage increases occurs, cause damage to powered capacitive load；Another object of the present utility model is to provide and a kind of includes the above-mentioned electromotor opening autocontrol system.
For solving above-mentioned technical problem, this utility model provides one and opens autocontrol system, for electromotor, including for the alternating current of two auxiliary winding outputs is carried out rectification process, and export galvanic auxiliary winding rectification circuit, control signal for exporting according to control circuit regulates the output circuit of the size of the exciting current in magnet exciting coil, for providing the power circuit of power supply for described control circuit, for the sample circuit that the output voltage of described electromotor is sampled, for control signal to described in exporting described output circuit described control circuit and, for when described electromotor accesses capacitive load, by controlling to generate in described magnet exciting coil the electric current in opposite direction with original exciting current, control the compensation circuit of the size of exciting current；Wherein:
The first input end of described auxiliary winding rectification circuit and the second input are connected with the two of described electromotor described auxiliary winding respectively, the positive output end of described auxiliary winding rectification circuit is connected with the positive terminal of described magnet exciting coil, the power end of described output circuit and the input of described power circuit respectively, the negative output terminal ground connection of described auxiliary winding rectification circuit；
The input of described output circuit is connected with the first outfan of described control circuit, and the first outfan of described output circuit is connected with the negative pole end of described magnet exciting coil；Second outfan of described output circuit is connected with the input of described compensation circuit；
The outfan of described power circuit is connected with the power end of described control circuit；
The first input end of described sample circuit and the second input are connected with the first sampling end of described electromotor and the second sampling end respectively, first outfan of described sample circuit is connected with the first input end of described control circuit, the second output head grounding of described sample circuit；
The outfan of described compensation circuit is connected with the negative pole end of described magnet exciting coil, and the power end of described compensation circuit is connected with the positive terminal of described magnet exciting coil.
Preferably, this system also includes:
For sending adjustment signal extremely described control circuit, regulate the adjustment circuit of the size of the control signal of described control circuit output, wherein, the first input end of described adjustment circuit is connected with the 3rd outfan of described output circuit, described adjustment circuit the second input is connected with the second outfan of described control circuit, the outfan of described adjustment circuit is connected with the second input of described control circuit, and the power end of described adjustment circuit is connected with the outfan of described power circuit.
Preferably, described compensation circuit includes:
NMOS tube, the first resistance and the second resistance；Wherein:
The grid of described NMOS tube is connected with the positive output end of described auxiliary winding rectification circuit by described first resistance, it is connected with the second outfan of described output circuit also by described second resistance, the drain electrode of described NMOS tube is connected with the positive terminal of described magnet exciting coil, and the source electrode of described NMOS tube is connected with the negative pole end of described magnet exciting coil.
Preferably, described auxiliary winding rectification circuit includes bridge rectifier.
Preferably, described auxiliary winding rectification circuit also includes:
Filter capacitor, the two ends of described filter capacitor are connected with negative output terminal with the positive output end of described auxiliary winding rectification circuit respectively.
Preferably, described sample circuit includes bridge rectifier, wherein, and the negative output terminal that the second outfan is described bridge rectifier of described sample circuit.
For solving above-mentioned technical problem, this utility model additionally provides a kind of electromotor, including opening autocontrol system as described in any of the above item.
This utility model provides one and opens autocontrol system, for electromotor, the outfan compensating circuit in this system is connected with the negative pole end of magnet exciting coil, the power end compensating circuit is connected with the positive terminal of magnet exciting coil, and the input compensating circuit is connected with the second outfan of output circuit, when electromotor accesses capacitive load, the current potential of the negative pole end of magnet exciting coil can reduce, make to compensate circuit and produce an electric current flowing to negative pole end from the positive terminal of magnet exciting coil, this electric current is contrary with the extra sense of current produced in magnet exciting coil after access capacitive load, therefore, it is possible to cancel out each other, avoid exciting current to increase, thus the situation that after avoiding access capacitive load, output voltage increases occurs, cause damage to powered capacitive load.This utility model additionally provides a kind of electromotor that can solve the problem that the problems referred to above.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, the accompanying drawing used required in prior art and embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
A kind of structural representation opening autocontrol system that Fig. 1 provides for this utility model；
A kind of physical circuit schematic diagram opening autocontrol system that Fig. 2 provides for this utility model.
Detailed description of the invention
Core of the present utility model is to provide one and opens autocontrol system, after accessing capacitive load, an electric current contrary with original exciting current can be produced in magnet exciting coil, avoid exciting current to increase, thus the situation that after avoiding access capacitive load, output voltage increases occurs, cause damage to powered capacitive load；Another core of the present utility model is to provide and a kind of includes the above-mentioned electromotor opening autocontrol system.
For making the purpose of this utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
This utility model provides one and opens autocontrol system, for electromotor, referring to shown in Fig. 1 and Fig. 2, and a kind of structural representation opening autocontrol system that Fig. 1 provides for this utility model；A kind of physical circuit schematic diagram opening autocontrol system that Fig. 2 provides for this utility model；This system includes:
For the alternating current of two auxiliary winding outputs is carried out rectification process, and export galvanic auxiliary winding rectification circuit 11, control signal for exporting according to control circuit 15 regulates the output circuit 12 of the size of the exciting current in magnet exciting coil, for providing the power circuit 13 of power supply for control circuit 15, for the sample circuit 14 that the output voltage of electromotor is sampled, for output control signals to output circuit 12 control circuit 15 and, for when electromotor accesses capacitive load, by controlling to generate in magnet exciting coil the electric current in opposite direction with original exciting current, control the compensation circuit 16 of the size of exciting current；Wherein:
The first input end of auxiliary winding rectification circuit 11 and the second input are connected with two auxiliary winding of electromotor respectively, the positive output end of auxiliary winding rectification circuit 11 is connected with the positive terminal of magnet exciting coil, the power end of output circuit 12 and the input of power circuit 13 respectively, the negative output terminal ground connection of auxiliary winding rectification circuit 11；
Wherein, auxiliary winding rectification circuit 11 here includes bridge rectifier.
As preferably, auxiliary winding rectification circuit 11 also includes:
Filter capacitor, the two ends of filter capacitor are connected with negative output terminal with the positive output end of auxiliary winding rectification circuit 11 respectively.
The input of output circuit 12 is connected with the first outfan of control circuit 15, and the first outfan of output circuit 12 is connected with the negative pole end of magnet exciting coil；Second outfan of output circuit 12 is connected with the input compensating circuit 16；
The outfan of power circuit 13 is connected with the power end of control circuit 15；
The first input end of sample circuit 14 and the second input are connected with the first sampling end of electromotor and the second sampling end respectively, and the first outfan of sample circuit 14 is connected with the first input end of control circuit 15, the second output head grounding of sample circuit 14；
It addition, sample circuit 14 includes bridge rectifier, wherein, the negative output terminal that the second outfan is bridge rectifier of sample circuit 14.
It is understood that the output voltage signal that sample circuit 14 can be collected by the bridge rectifier in sample circuit 14 carries out rectification process.
The outfan compensating circuit 16 is connected with the negative pole end of magnet exciting coil, and the power end compensating circuit 16 is connected with the positive terminal of magnet exciting coil.
Wherein, compensation circuit 16 here includes:
NMOS tube Q7-1, the first resistance R7-1 and the second resistance R7-2；Wherein:
The grid of NMOS tube Q7-1 is connected with the positive output end of auxiliary winding rectification circuit 11 by the first resistance R7-1, it is connected with the second outfan of output circuit 12 also by the second resistance R7-2, the drain electrode of NMOS tube Q7-1 is connected with the positive terminal of magnet exciting coil, and the source electrode of NMOS tube Q7-1 is connected with the negative pole end of magnet exciting coil.
Certainly, the resistance of the first resistance R7-1 and the second resistance R7-2 is not construed as limiting by this utility model, can select suitable resistance voluntarily according to practical situation.
It is understandable that, original circuit base add after compensating circuit 16, when electromotor accesses capacitive load, owing to the current potential of the negative pole end of magnet exciting coil reduces, cause that the audion in output circuit 12 is in cut-off state, now the positive output end of auxiliary winding rectification circuit 11 carrys out the grid for compensating the NMOS tube Q7-1 in circuit 16 by the first resistance R7-1 provides electric current, the electric current exported due to the positive output end of auxiliary winding rectification circuit 11 is sufficiently large, therefore NMOS tube Q7-1 conducting, therefore an electric current flowing to negative pole end from the positive terminal of magnet exciting coil is created in magnet exciting coil.Due to after electromotor accesses capacitive load, an electric current identical with former exciting current direction can be produced in magnet exciting coil, this electric current compensates the electric current that produces after circuit 16 in the loop in opposite direction with accessing, therefore, it is possible to cancel out each other, avoid exciting current to increase, thus the situation of the output voltage increase out of control of electromotor occurs after avoiding access capacitive load, effectively prevent electromotor and burn the situation appearance of electrical appliance.
As preferably, this system also includes:
For sending adjustment signal to control circuit 15, carry out the adjustment circuit 17 of the size of the control signal of adjusting control circuit 15 output, the first input end regulating circuit 17 is connected with the 3rd outfan of output circuit 12, regulate circuit 17 second input to be connected with the second outfan of control circuit 15, the outfan regulating circuit 17 is connected with the second input of control circuit 15, and the power end regulating circuit 17 is connected with the outfan of power circuit 13.
It is understandable that, when generator drive inductive load (such as motor), due to big about 3 times of its running current of current ratio needed when inductive load starts, and the output of electromotor limited (namely output electric current is limited), do not reach the big electric current needed when inductive load starts, therefore, electromotor cannot start and oneself equal powerful inductive load.
A kind of physical circuit schematic diagram opening autocontrol system shown in Figure 2, that Fig. 2 provides for this utility model；Adding after regulating circuit 17, the first input end regulating circuit 17 is connected with the 3rd outfan of output circuit 12, and the outfan regulating circuit 17 is connected with the second input of control circuit 15.After electromotor accesses inductive load, exciting current can increase, output circuit 12 can export an excitation signal by the 3rd outfan and the change of the size of exciting current informs adjustment circuit 17, regulate circuit 17 to export one according to excitation signal and regulate signal to control circuit 15, reduce the magnitude of voltage of the control signal of control circuit 15 output, after the magnitude of voltage of control signal reduces, audion in output circuit 12 is now in cut-off state, cause that the positive terminal of magnet exciting coil is identical with the voltage of negative pole end, now no current in magnet exciting coil.By repeating said process according to predeterminated frequency, causing excitation-free current in certain time, so that exciting current totally reduces, owing to exciting current is directly proportional to output voltage, therefore output voltage also reduces, and again because output is constant, therefore output electric current increases.
Therefore after adding adjustment circuit 17, electromotor output electric current after accessing inductive load increases, meeting the big electric current needed when inductive load starts, therefore electromotor can normally start the inductive load (such as blower fan, air compressor machine etc.) with electromotor Same Efficieney size.
Certainly, the numerical value of predeterminated frequency is not limited by this utility model, and staff can according to practical situation sets itself.
This utility model provides one and opens autocontrol system, for electromotor, the outfan compensating circuit in this system is connected with the negative pole end of magnet exciting coil, the power end compensating circuit is connected with the positive terminal of magnet exciting coil, and the input compensating circuit is connected with the second outfan of output circuit, when electromotor accesses capacitive load, the current potential of the negative pole end of magnet exciting coil can reduce, make to compensate circuit and produce an electric current flowing to negative pole end from the positive terminal of magnet exciting coil, this electric current is contrary with the extra sense of current produced in magnet exciting coil after access capacitive load, therefore, it is possible to cancel out each other, avoid exciting current to increase, thus the situation that after avoiding access capacitive load, output voltage increases occurs, cause damage to powered capacitive load.
This utility model additionally provides a kind of electromotor, opens autocontrol system including above-mentioned.
It should be noted that, in this manual, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (7)
1. one kind is opened autocontrol system, for electromotor, it is characterized in that, including for the alternating current of two auxiliary winding outputs is carried out rectification process, and export galvanic auxiliary winding rectification circuit, control signal for exporting according to control circuit regulates the output circuit of the size of the exciting current in magnet exciting coil, for providing the power circuit of power supply for described control circuit, for the sample circuit that the output voltage of described electromotor is sampled, for control signal to described in exporting described output circuit described control circuit and, for when described electromotor accesses capacitive load, by controlling to generate in described magnet exciting coil the electric current in opposite direction with original exciting current, control the compensation circuit of the size of exciting current；Wherein:
The first input end of described auxiliary winding rectification circuit and the second input are connected with the two of described electromotor described auxiliary winding respectively, the positive output end of described auxiliary winding rectification circuit is connected with the positive terminal of described magnet exciting coil, the power end of described output circuit and the input of described power circuit respectively, the negative output terminal ground connection of described auxiliary winding rectification circuit；
The input of described output circuit is connected with the first outfan of described control circuit, and the first outfan of described output circuit is connected with the negative pole end of described magnet exciting coil；Second outfan of described output circuit is connected with the input of described compensation circuit；
The outfan of described power circuit is connected with the power end of described control circuit；
The first input end of described sample circuit and the second input are connected with the first sampling end of described electromotor and the second sampling end respectively, first outfan of described sample circuit is connected with the first input end of described control circuit, the second output head grounding of described sample circuit；
The outfan of described compensation circuit is connected with the negative pole end of described magnet exciting coil, and the power end of described compensation circuit is connected with the positive terminal of described magnet exciting coil.
2. system according to claim 1, it is characterised in that this system also includes:
For sending adjustment signal extremely described control circuit, regulate the adjustment circuit of the size of the control signal of described control circuit output, wherein, the first input end of described adjustment circuit is connected with the 3rd outfan of described output circuit, described adjustment circuit the second input is connected with the second outfan of described control circuit, the outfan of described adjustment circuit is connected with the second input of described control circuit, and the power end of described adjustment circuit is connected with the outfan of described power circuit.
3. system according to claim 1, it is characterised in that described compensation circuit includes:
NMOS tube, the first resistance and the second resistance；Wherein:
The grid of described NMOS tube is connected with the positive output end of described auxiliary winding rectification circuit by described first resistance, it is connected with the second outfan of described output circuit also by described second resistance, the drain electrode of described NMOS tube is connected with the positive terminal of described magnet exciting coil, and the source electrode of described NMOS tube is connected with the negative pole end of described magnet exciting coil.
4. system according to claim 1, it is characterised in that described auxiliary winding rectification circuit includes bridge rectifier.
5. system according to claim 4, it is characterised in that described auxiliary winding rectification circuit also includes:
Filter capacitor, the two ends of described filter capacitor are connected with negative output terminal with the positive output end of described auxiliary winding rectification circuit respectively.
6. system according to claim 1, it is characterised in that described sample circuit includes bridge rectifier, wherein, the negative output terminal that the second outfan is described bridge rectifier of described sample circuit.
7. an electromotor, it is characterised in that include opening autocontrol system as described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043975.9U CN205356210U (en) | 2015-12-11 | 2015-12-11 | Generator and start control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043975.9U CN205356210U (en) | 2015-12-11 | 2015-12-11 | Generator and start control system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205356210U true CN205356210U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521043975.9U Expired - Fee Related CN205356210U (en) | 2015-12-11 | 2015-12-11 | Generator and start control system thereof |
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| Country | Link |
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| CN (1) | CN205356210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450117A (en) * | 2015-12-11 | 2016-03-30 | 重庆五福科技有限公司 | Electric generator and start control system therefor |
-
2015
- 2015-12-11 CN CN201521043975.9U patent/CN205356210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450117A (en) * | 2015-12-11 | 2016-03-30 | 重庆五福科技有限公司 | Electric generator and start control system therefor |
| CN105450117B (en) * | 2015-12-11 | 2019-07-26 | 重庆五福科技有限公司 | A kind of generator and its starting control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20171211 |