CN201976060U - Generator circuit with load dump protection function - Google Patents
Generator circuit with load dump protection function Download PDFInfo
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- CN201976060U CN201976060U CN2011200331580U CN201120033158U CN201976060U CN 201976060 U CN201976060 U CN 201976060U CN 2011200331580 U CN2011200331580 U CN 2011200331580U CN 201120033158 U CN201120033158 U CN 201120033158U CN 201976060 U CN201976060 U CN 201976060U
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- generator
- resistance
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- triode
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Abstract
A generator circuit with a load dump protection function adopts the structure that generator armature three-phase windings are connected with commutation diodes for generator rectification, a storage battery and a load are connected in parallel with the circuit, the base electrode of an NPN-type triode is connected with a first resistor and a second resistor which are used for voltage division, the other end of the first resistor is connected with the terminal of a generator B+, the other end of the second resistor is connected with the grounding terminal, and both the collecting electrode and the emitting electrode of the NPN-type triode are connected to two sides of an excitation coil, so as to form a loop. The utility model has the advantages that when the base electrode detects that the voltage of the generator B+ is less than the rated voltage of the generator, a power triode is conducted, and the excitation loop is conducted, so as to form a follow current loop; when the load of the generator is cut off suddenly, and the voltage of the generator rises, the base electrode of the triode detects the high voltage, the triode is cut off, and the excitation loop is cut off, so that the magnetic flux of a rotor is reduced, and the voltage of the generator during voltage dump is lowered; and accordingly, the impact of high voltage on vehicle-mounted electric appliances is reduced, and the service life of the vehicle-mounted electric appliances is prolonged.
Description
Technical field
The utility model is a kind of generator circuit that has the throw load defencive function.
Background technology
Existing machine adjuster power tube Q
1Be connected to magnetizing coil R
F4On, continuous current circuit adopts diode D
7Be responsible for afterflow, this makes generator still have electric current to pass through in the magnetizing coil when throw load, not controlled by adjuster, has increased the time and the amplitude of generator Unloading Voltage, the easier impact that causes vehicle mounted electrical apparatus.
Summary of the invention
The purpose of this utility model is to solve above-mentioned existing existing problem, provides a kind of impact that reduces high voltage for vehicle mounted electrical apparatus, the generator circuit that has the throw load defencive function that prolongs its useful life.
The utility model is achieved in that generator armature three phase winding Rf1, Rf2, Rf3 and rectifier diode D1, D2, D3, D4, D5, D6 connection carrying out generator commutation, storage battery E, load RL is connected in parallel in the circuit, the collector electrode of pliotron Q1 is connected with magnetizing coil Rf4, the grounded emitter of pliotron Q1, the base stage of NPN type triode Q2 connects dividing potential drop first resistance R 1, second resistance R 2, first resistance R, 1 other end is connected with generator B+ end, second resistance R, 2 other ends are connected with earth terminal, first resistance R 1, second resistance R 2 act as disperses generator B+ resistance, first resistance R 1, conducting ends voltage between second resistance as NPN type triode Q2 base stage threshold values control triode, this is equivalent to base stage and detects generator B+ voltage signal, the conducting of controlling triode ends, collector electrode and the emitter of NPN type triode Q2 are linked magnetizing coil Rf4 both sides, form the loop.
The utility model has the advantages that, be below the generator rated voltage when base stage detects generator B+ voltage, pliotron Q1 conducting, and the energizing loop conducting forms continuous current circuit.Suddenly disconnect when load appears in generator, during situation that generator voltage raises, triode Q2 base stage detects high voltage, and triode Q2 ends, and energizing loop disconnects, and reduces rotor flux, the voltage when reducing the generator throw load.Thereby reduce the impact of high voltage, prolong its useful life for vehicle mounted electrical apparatus.
Description of drawings
Fig. 1 is existing generator circuit figure;
Fig. 2 is a circuit diagram of the present utility model.
Embodiment
Describe in detail below in conjunction with accompanying drawing: as shown in Figure 2, generator armature three phase winding Rf1, Rf2, Rf3 respectively with rectifier diode D1, D2, D3, D4, D5, D6 connection carrying out generator commutation, storage battery E, load RL is connected in parallel in the circuit, the collector electrode of pliotron Q1 is connected with magnetizing coil Rf4, the grounded emitter of pliotron Q1, the base stage of NPN type triode Q2 connects dividing potential drop first resistance R 1, second resistance R 2, first resistance R, 1 other end is connected with generator B+ end, second resistance R, 2 other ends are connected with earth terminal, first resistance R 1, second resistance R 2 act as disperses generator B+ resistance, first resistance R 1, conducting ends voltage between second resistance as NPN type triode Q2 base stage threshold values control triode, this is equivalent to base stage and detects generator B+ voltage signal, the conducting of controlling triode ends, collector electrode and the emitter of NPN type triode Q2 are linked magnetizing coil Rf4 both sides, form the loop.When base stage detects generator B+ voltage is below the generator rated voltage, pliotron Q1 conducting, and the energizing loop conducting forms continuous current circuit.Suddenly disconnect when load appears in generator, during situation that generator voltage raises, triode Q2 base stage detects high voltage, and triode Q2 ends, and energizing loop disconnects, and reduces rotor flux, the voltage when reducing the generator throw load; Thereby reduce the impact of high voltage, prolong its useful life for vehicle mounted electrical apparatus.
Claims (1)
1. generator circuit that has the throw load defencive function; generator armature three phase winding (Rf1; Rf2; Rf3) with rectifier diode (D1; D2; D3; D4; D5; D6) generator commutation is carried out in connection; storage battery (E); load (RL) is connected in parallel in the circuit; the collector electrode of pliotron (Q1) is connected with magnetizing coil (Rf4); the grounded emitter of pliotron (Q1); it is characterized in that; the base stage of NPN type triode (Q2) connects dividing potential drop first resistance (R1); second resistance (R2); first resistance (R1) other end is connected with generator B+ end; second resistance (R2) other end is connected with earth terminal; first resistance (R1); second resistance (R2) act as and disperses generator B+ resistance; first resistance (R1); conducting ends voltage between second resistance as NPN type triode (Q2) base stage threshold values control triode; this is equivalent to base stage and detects generator B+ voltage signal; the conducting of controlling triode ends; the collector electrode of NPN type triode (Q2) and emitter are linked magnetizing coil (Rf4) both sides, form the loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200331580U CN201976060U (en) | 2011-01-31 | 2011-01-31 | Generator circuit with load dump protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200331580U CN201976060U (en) | 2011-01-31 | 2011-01-31 | Generator circuit with load dump protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201976060U true CN201976060U (en) | 2011-09-14 |
Family
ID=44581159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200331580U Expired - Fee Related CN201976060U (en) | 2011-01-31 | 2011-01-31 | Generator circuit with load dump protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201976060U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576732A (en) * | 2013-11-06 | 2014-02-12 | 苏州泰思特电子科技有限公司 | Throw load voltage wave suppression device |
| CN104270051A (en) * | 2014-10-08 | 2015-01-07 | 北京曙光航空电气有限责任公司 | Brushless direct-current generator excitation circuit |
| CN106253203A (en) * | 2015-06-10 | 2016-12-21 | 英飞凌科技股份有限公司 | For preventing safety circuit and the brush holder of fault state in alternating current generator |
| CN112583208A (en) * | 2020-12-11 | 2021-03-30 | 兰州飞行控制有限责任公司 | Passive pedal-operated damping mechanism with speed limiting function |
-
2011
- 2011-01-31 CN CN2011200331580U patent/CN201976060U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576732A (en) * | 2013-11-06 | 2014-02-12 | 苏州泰思特电子科技有限公司 | Throw load voltage wave suppression device |
| CN103576732B (en) * | 2013-11-06 | 2015-07-15 | 苏州泰思特电子科技有限公司 | Throw load voltage wave suppression device |
| CN104270051A (en) * | 2014-10-08 | 2015-01-07 | 北京曙光航空电气有限责任公司 | Brushless direct-current generator excitation circuit |
| CN106253203A (en) * | 2015-06-10 | 2016-12-21 | 英飞凌科技股份有限公司 | For preventing safety circuit and the brush holder of fault state in alternating current generator |
| US9929685B2 (en) | 2015-06-10 | 2018-03-27 | Infineon Technologies Ag | Safety circuit and brush holder for preventing fault conditions in an alternator |
| CN106253203B (en) * | 2015-06-10 | 2018-12-28 | 英飞凌科技股份有限公司 | For preventing the safety circuit and brush handle of fault state in alternating current generator |
| CN112583208A (en) * | 2020-12-11 | 2021-03-30 | 兰州飞行控制有限责任公司 | Passive pedal-operated damping mechanism with speed limiting function |
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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: 20110914 Termination date: 20180131 |