CN102095994B - Generator excitation circuit detection method - Google Patents
Generator excitation circuit detection method Download PDFInfo
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- CN102095994B CN102095994B CN201010559614.5A CN201010559614A CN102095994B CN 102095994 B CN102095994 B CN 102095994B CN 201010559614 A CN201010559614 A CN 201010559614A CN 102095994 B CN102095994 B CN 102095994B
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Abstract
The invention relates to a generator excitation circuit detection method. A excitation circuit comprises a power generator, a power controller and a storage battery, wherein an exciting winding of the power generator and a field flashing resistor, a rectifier bridge and a field-effect tube in the power controller form the excitation circuit; and the state of the excitation circuit of the power generator is judged according to the voltage value at the D+ point of the circuit. The generator excitation circuit detection method provided by the invention overcomes the deficiencies of the existing power generation system of automobiles that the excitation state of the power generator can be judged in a static condition through the following steps of removing all the cables connected with the power generator, and directly measuring a socket of the power generator manually by using a universal meter, and judging whether the excitation circuit is in a good condition or a poor condition. The generator excitation circuit detection method enlarges the detection range, realizes automatic detection, can judge the power generation state of the power generator more conveniently and reliably, combines with the single-chip microcomputer technology and the bus communication technology, and transmits the collected information of the excitation circuit and the power generation state to an upper computer so as to realize remote state monitoring and failure diagnosis of the power generation system.
Description
Technical field:
The present invention relates to a kind of generator control method, be specifically related to a kind of generator excitation circuit detection method.
Background technology:
The key that can generator normally work is the energized circuit of generator.In existing vehicle power generation system, after can only the cable being connected with generator all being freed under quiescent conditions for the judgement of the excited state of generator, by artificial its socket of directly measuring of multimeter, judge the quality of energized circuit, and generator installation site is onboard unfavorable for this hand inspection often very much; And the in the situation that of the dynamic duty of generator access electricity generation system, be the state that cannot judge by the method for manual measurement generator excitation circuit, if generator breaks down, be unfavorable for very much carrying out localization of fault.
And in traditional vehicle power generation system, whether generator generates electricity, also can only judge by the method for manual measurement generator output voltage.
Summary of the invention:
The deficiency existing for prior art, the object of the present invention is to provide a kind of convenience, reliable method to detect the energized circuit of generator.
The invention provides a kind of generator excitation circuit detection method, described loop comprises generator 1, power-supply controller of electric 2 and accumulator 3; Its improvements are: the generator commutation pipe 8 of described power-supply controller of electric 2, main winding 9, excitation resistance 4 field copper 6 and field effect transistor 7 rear and described generator 1 in parallel with rectifier bridge 5 connect and compose energized circuit successively; Described method comprises measures D+ point voltage value in described energized circuit.
The generator excitation circuit detection method of the first preferred version provided by the invention, its improvements are: described in be determined as and detect stationary power generator 1D+ point voltage, its value is during for 0.7V-1V, described generator 1 energized circuit is normal, during for cell voltage, described generator 1 energized circuit fault.
The generator excitation circuit detection method of the second preferred version provided by the invention, its improvements are: detect dynamic electricity generation machine 1D+ point voltage, when its value is generator 1 generating voltage 28V, described generator 1 energized circuit is normal; For cell voltage, described generator 1 energized circuit fault.
The generator excitation circuit detection method of the 3rd preferred version provided by the invention, its improvements are: described generator 1 reaches after minimum generating rotating speed, when D+ voltage is generator 1 generating voltage 28V, generator normal power generation; When D+ voltage is 0.7V-1V, described generator 1 does not generate electricity.
The generator excitation circuit detection method of the 4th preferred version provided by the invention, its improvements are: described generator 1 is Dyn..
The generator excitation circuit detection method of another preferred version provided by the invention, its improvements are: detect dynamic electricity generation machine 1D+ point voltage, during for generator 1 generating voltage 28V, described generator 1 energized circuit is normal; For cell voltage, described generator 1 energized circuit fault.
The generator excitation circuit detection method of a preferred version more provided by the invention, its improvements are: described generator 1 reaches after minimum generating rotating speed, when D+ voltage is generator 1 generating voltage 28V, described generator 1 normal power generation; When D+ voltage is 0.7V-1V, described generator 1 does not generate electricity.
Compared with the prior art, beneficial effect of the present invention is:
Expand sensing range;
Realize automatically and detecting;
The generating state of convenient reliable judgement generator;
The present invention can, in conjunction with singlechip technology and bus communication technology, be uploaded to host computer by the energized circuit information of collection and generating state information, realizes remote status monitoring and the fault diagnosis of electricity generation system.
Accompanying drawing explanation
Fig. 1 schematic diagram provided by the invention
Embodiment
The present invention by checking, uses power-supply controller of electric and driver's end device to realize in the generator state monitoring of certain special vehicle power & electric management system and fault diagnosis system.In power-supply controller of electric, single-chip microcomputer gathers D+ point voltage, and according to bus protocol, excited state information is sent to driver's terminal.Driver's terminal combines excitation information and engine speed, judges generator excitation circuit state, and makes generating indication.
Below in conjunction with Fig. 1, the invention will be further described:
Under generator 1 quiescent conditions, main winding 9 Non voltage outputs of generator 1, energized circuit consists of accumulator 3, excitation resistance 4, field copper 6, field effect transistor 7.As shown in ib in figure.Because field effect transistor 7 is now in fully conducting state, if energized circuit normally D+ point voltage should be terminal voltage in field copper 6, in energized circuit, excitation resistance 4 is 80 ohm, with respect to excitation resistance 4, the resistance of field copper 6 is very little, thereby the voltage of getting is in the line also very low, so time D+ voltage be 1V left and right; If generator 1 energized circuit fault, for example field copper 6 is opened a way, and D+ voltage is accumulator 3 voltage 24V.
Under generator 1 current intelligence, the main winding 9 of generator 1 has alternating voltage ABC output, after 5 rectifications of rectifier bridge in power-supply controller of electric, exports direct current 28V.Because voltage after rectification is higher than battery tension, now energized circuit is as shown in ib in figure.The normal D+ point voltage of energized circuit is 28V.If energized circuit fault, main winding 9 Non voltage outputs of generator 1, energized circuit is as shown in ib in figure, and D+ voltage is the voltage 24V of accumulator 1.
In the normal situation of energized circuit, the present invention can also judge whether normal power generation of generator.After generator 1 reaches minimum generating rotating speed, if generator 1 normal power generation, now D+ point voltage is 28V, if generator 1 fails to generate electricity, D+ point voltage is low.As can be seen here, D+ point under whether generator generates electricity two states time voltage be different, therefore by D+ point voltage, also can judge generator generating state.
Claims (1)
1. a generator excitation circuit detection method, described loop comprises generator (1), power-supply controller of electric (2) and accumulator (3), it is characterized in that: described accumulator (3), the generator commutation pipe (8) of described generator (1), the main winding (9) of described generator (1), the rectifier bridge (5) of described power-supply controller of electric (2), the field copper (6) of described generator (1) and the field effect transistor (7) of described power-supply controller of electric (2) connect successively, the output terminal of described rectifier bridge (5) is connected with one end of the excitation resistance (4) of described power-supply controller of electric (2), the other end of described excitation resistance (4) is connected with the output terminal of described accumulator (3), described method comprises measures D+ point voltage value in described energized circuit, and described D+ point is the tie point of described rectifier bridge (5) and described field copper (6),
Described being determined as detected stationary power generator (1) D+ point voltage, and when its value is 0.7V-1V, described generator (1) energized circuit is normal; During for battery tension, described generator (1) energized circuit fault;
Detect dynamic electricity generation machine (1) D+ point voltage, when its value is generator (1) generating voltage 28V, described generator (1) energized circuit is normal; For battery tension, described generator (1) energized circuit fault;
Described generator (1) reaches after minimum generating rotating speed, when D+ point voltage is generator (1) generating voltage 28V, and generator normal power generation; When D+ point voltage is 0.7V-1V, described generator (1) does not generate electricity;
Described generator (1) is Dyn..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010559614.5A CN102095994B (en) | 2010-11-26 | 2010-11-26 | Generator excitation circuit detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010559614.5A CN102095994B (en) | 2010-11-26 | 2010-11-26 | Generator excitation circuit detection method |
Publications (2)
| Publication Number | Publication Date |
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| CN102095994A CN102095994A (en) | 2011-06-15 |
| CN102095994B true CN102095994B (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010559614.5A Expired - Fee Related CN102095994B (en) | 2010-11-26 | 2010-11-26 | Generator excitation circuit detection method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108490294B (en) * | 2018-04-03 | 2024-07-19 | 中国重汽集团济南动力有限公司 | Heavy-duty car generator fault detection device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110027A (en) * | 1993-12-28 | 1995-10-11 | 三菱电机株式会社 | Apparatus for controlling output of vehicular AC generator |
| CN1276101A (en) * | 1997-09-11 | 2000-12-06 | 三菱电机株式会社 | Controller of ac generator for vehicle |
| US6215284B1 (en) * | 1998-04-09 | 2001-04-10 | Mitsubishi Denki Kabushiki Kaisha | Control device of A.C. generator for vehicle |
| CN201065077Y (en) * | 2007-06-07 | 2008-05-28 | 于学禄 | Variable-magnetism speed-regulation electric vehicle and controller thereof |
-
2010
- 2010-11-26 CN CN201010559614.5A patent/CN102095994B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110027A (en) * | 1993-12-28 | 1995-10-11 | 三菱电机株式会社 | Apparatus for controlling output of vehicular AC generator |
| CN1276101A (en) * | 1997-09-11 | 2000-12-06 | 三菱电机株式会社 | Controller of ac generator for vehicle |
| US6215284B1 (en) * | 1998-04-09 | 2001-04-10 | Mitsubishi Denki Kabushiki Kaisha | Control device of A.C. generator for vehicle |
| CN201065077Y (en) * | 2007-06-07 | 2008-05-28 | 于学禄 | Variable-magnetism speed-regulation electric vehicle and controller thereof |
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| CN102095994A (en) | 2011-06-15 |
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Granted publication date: 20140423 Termination date: 20151126 |