CN202334425U - Variable-speed constant-voltage brushless direct current generator - Google Patents
Variable-speed constant-voltage brushless direct current generator Download PDFInfo
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- CN202334425U CN202334425U CN2011204770337U CN201120477033U CN202334425U CN 202334425 U CN202334425 U CN 202334425U CN 2011204770337 U CN2011204770337 U CN 2011204770337U CN 201120477033 U CN201120477033 U CN 201120477033U CN 202334425 U CN202334425 U CN 202334425U
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Abstract
The utility model discloses a variable-speed constant-voltage brushless direct current generator. After the rotating speed of the generator is more than 1,500 revolutions per minute, a voltage regulator operates to establish the voltage, a voltage signal of an armature winding of the generator is converted into a pulse direct current voltage signal through a bridge rectifying and filtering module, the voltage signal subjected to differential shaping and a voltage setting reference signal are transmitted to a proportion integration differentiation (PID) regulating module together, an output signal of the PID regulating module is subjected to pulse width modulation (PWM) by a PWM and power drive module to form a rectangular wave signal, and the exciting current of the generator is controlled through a driving circuit, so that the output voltage of the generator is regulated and stabilized at a rated voltage value. The utility model has the advantages that: the exciting current of the generator is regulated by regulating a voltage on-off ratio on an exciting winding of the generator, so that the voltage of the generator is controlled at the rated value, and the output voltage can be kept invariable at 28V when the speed of the generator suddenly changes in the automobile running process.
Description
Technical field
The utility model relates to the alternator for vehicle field, especially relates to a kind of speed constant pressure brush DC generator.
Background technology
The speed change brushless DC generator is used for the power taking generating of vehicle traveling process, and the power consumption equipment that carries dress for vehicle provides stable dc power supply, also can be used as DC generator and is used for other DC power generation systems.Generator adopts the Lundell structure, and generator mainly is made up of stator and rotor, front and rear cover, silicon rectifier device, voltage regulator and electric weight demonstration and output-controlling device etc.Rotor adopts claw-pole structure, and front and rear cover is a steel plateelement.Through the magnetic field of control generator, the armature voltage of control generator, and then the output voltage after the control rectification.DC generator field power supply originally all is the electricity that adopts permanent magnetic motor to send, and when generator speed changed suddenly, the permanent magnetic motor output voltage also changed thereupon; When generator speed raises suddenly; If it is constant to keep DC generator output voltage to remain on DC28V, will reduce generator excitation voltage, and generator voltage raise and raise this moment along with rotating speed; So reduction exciting current that will be by a larger margin, this has just brought bigger difficulty to control.
Summary of the invention
The utility model purpose be to provide a kind of can guarantee running car the time generator output voltage keep the constant speed constant pressure brush DC generator of 28V.
For realizing above-mentioned purpose, the utility model can be taked following technical proposals:
The described speed constant pressure brush DC of the utility model generator comprises generator, and the power output end of said generator is electrically connected with the power input of electric current and voltage rotating speed display controller module, rectification filtering module and voltage detection module respectively; The signal output part of said electric current and voltage rotating speed display controller module is electrically connected with the signal input part of direct current output module, and electric current and voltage rotating speed display controller module is connected with the communication of RS-485 communication module; The power output end of said rectification filtering module is electrically connected with the power input of electric current and voltage rotating speed display controller module, current detection module and preload module respectively; The signal output part of said current detection module is electrically connected with the signal input part of electric current and voltage rotating speed display controller module, direct current output module, working power handover module, low speed overcurrent voltage protection module and current compensation module respectively; The signal output part of said voltage detection module is electrically connected with the signal input part of PID adjustment module through said low speed overcurrent voltage protection module and far-end control module respectively; The signal output part of said current compensation module is electrically connected with the signal input part of said PID adjustment module; The signal output part of PID adjustment module is electrically connected with the signal input part of PWM and power driver module, and the signal input part of said engine is electrically connected with the signal output part of voltage excitation module through said PWM and power driver module and working power handover module.
The utility model advantage is the size of current through the voltage make-to-break ratio regulator generator excitation winding on the regulator generator excitation winding; Thereby the voltage of control generator is stabilized in rated value, guarantee generator in vehicle traveling process alternator speed (2000-6000r/min) when changing suddenly generator output voltage can keep 28V constant.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model.
Embodiment
As shown in the figure; The described speed constant pressure brush DC of the utility model generator; Comprise generator, the power output end of said generator is electrically connected with the power input of electric current and voltage rotating speed display controller module, rectification filtering module and voltage detection module respectively; The signal output part of said electric current and voltage rotating speed display controller module is electrically connected with the signal input part of direct current output module, and electric current and voltage rotating speed display controller module is connected with the communication of RS-485 communication module; The power output end of said rectification filtering module is electrically connected with the power input of electric current and voltage rotating speed display controller module, current detection module and preload module respectively; The signal output part of said current detection module is electrically connected with the signal input part of electric current and voltage rotating speed display controller module, direct current output module, working power handover module, low speed overcurrent voltage protection module and current compensation module respectively; The signal output part of said voltage detection module is electrically connected with the signal input part of PID adjustment module through said low speed overcurrent voltage protection module and far-end control module respectively; The signal output part of said current compensation module is electrically connected with the signal input part of said PID adjustment module; The signal output part of PID adjustment module is electrically connected with the signal input part of PWM and power driver module, and the signal input part of said engine is electrically connected with the signal output part of voltage excitation module through said PWM and power driver module and working power handover module.
Its operation principle is: voltage regulator is devoted oneself to work and is set up voltage after generator speed is greater than 1500r/min; The voltage signal of generator armature winding becomes a pulsating dc voltage signal through the bridge rectifier filtration module; Set reference signal with voltage after this voltage signal process differential shaping and deliver to the PID adjustment module; PID adjustment module output signal becomes square-wave signal through PWM and power driver module pulse-width modulation; Through the size of drive circuit control exciter current of generator, thereby the regulator generator output voltage makes generator output voltage be stabilized in load voltage value.The output voltage signal of generator and the reference voltage of operational amplifier compare, operational amplifier output low level when signal voltage value is higher than the reference voltage value of operational amplifier, and high power valve turn-offs; Cut off the power supply of magnet exciting coil; Generator output voltage is reduced, operational amplifier output high level when signal voltage value is lower than the reference voltage value of operational amplifier, high power valve conducting; The electric current of magnet exciting coil increases, and the voltage of generator is raise.Pass through the size of current of the voltage make-to-break ratio regulator generator excitation winding on the regulator generator excitation winding like this, thereby the voltage of control generator is stabilized in rated value.Detect the output current of generator through Hall current sensor; And convert this magnitude of current to corresponding voltage signal with it; Send into the PID adjustment module through the current compensation module,, improve the dynamic property of generator output voltage to accelerate the reaction speed of generator.
Claims (1)
1. a speed constant pressure brush DC generator comprises generator, it is characterized in that: the power output end of said generator is electrically connected with the power input of electric current and voltage rotating speed display controller module, rectification filtering module and voltage detection module respectively; The signal output part of said electric current and voltage rotating speed display controller module is electrically connected with the signal input part of direct current output module, and electric current and voltage rotating speed display controller module is connected with the communication of RS-485 communication module; The power output end of said rectification filtering module is electrically connected with the power input of electric current and voltage rotating speed display controller module, current detection module and preload module respectively; The signal output part of said current detection module is electrically connected with the signal input part of electric current and voltage rotating speed display controller module, direct current output module, working power handover module, low speed overcurrent voltage protection module and current compensation module respectively; The signal output part of said voltage detection module is electrically connected with the signal input part of PID adjustment module through said low speed overcurrent voltage protection module and far-end control module respectively; The signal output part of said current compensation module is electrically connected with the signal input part of said PID adjustment module; The signal output part of PID adjustment module is electrically connected with the signal input part of PWM and power driver module, and the signal input part of said engine is electrically connected with the signal output part of voltage excitation module through said PWM and power driver module and working power handover module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204770337U CN202334425U (en) | 2011-11-25 | 2011-11-25 | Variable-speed constant-voltage brushless direct current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204770337U CN202334425U (en) | 2011-11-25 | 2011-11-25 | Variable-speed constant-voltage brushless direct current generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334425U true CN202334425U (en) | 2012-07-11 |
Family
ID=46446389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204770337U Withdrawn - After Issue CN202334425U (en) | 2011-11-25 | 2011-11-25 | Variable-speed constant-voltage brushless direct current generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368676A (en) * | 2011-11-25 | 2012-03-07 | 郑州金阳电气有限公司 | Variable-speed constant-voltage direct-current brushless generator |
| CN109921702A (en) * | 2017-12-13 | 2019-06-21 | 北京机电工程研究所 | Power takeoff generation unit device |
-
2011
- 2011-11-25 CN CN2011204770337U patent/CN202334425U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368676A (en) * | 2011-11-25 | 2012-03-07 | 郑州金阳电气有限公司 | Variable-speed constant-voltage direct-current brushless generator |
| CN102368676B (en) * | 2011-11-25 | 2014-03-05 | 郑州金阳电气有限公司 | Variable-speed constant-voltage direct-current brushless generator |
| CN109921702A (en) * | 2017-12-13 | 2019-06-21 | 北京机电工程研究所 | Power takeoff generation unit device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20140305 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20140305 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |