Automobile generator output voltage control system
A technology for output voltage control and automotive generators, applied in electric vehicles, battery circuit devices, collectors, etc., can solve the problems of embedded controllers' working stability and reliability threats, and achieve the effect of reducing design costs
Active Publication Date: 2017-09-26
SHAANXI HEAVY DUTY AUTOMOBILE
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Problems solved by technology
In particular, it is a potential threat to the stability and reliability of embedded controllers widely used in today's automotive electrical systems
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[0027] The present invention will be further described below in conjunction with the accompanying drawings.
[0028] like figure 2 As shown, the automobile generator output voltage control system of the present invention is suitable for automobile 12 / 24V systems, and is also suitable for other automobile power supply systems. This system cancels the traditional electronic regulator and changes the switch control of the traditional electronic voltage regulator. The method adopts the method of linear continuous adjustment. The system includes a generator and batteries. It also includes a sampler A1, which is electrically connected to the voltage output terminal of the generator, and is used to filter, sample and A / D convert the voltage B2 output by the generator rectifier and input it to the processor A3, a generator speed counter A4, For receiving the rotational speed signal from the generator, and sending the signal to the processor A3, a driver A5, which is electrically co...
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The invention relates to an output voltage control system of an automobile generator. The system can provide a linear and continuously changing excitation current to the generator, so that the generator can output a constant voltage no matter what the working condition is, which can greatly extend the service life of the vehicle electrical appliances. The automotive generator output voltage control system includes a generator and a storage battery, and also includes: a sampler, which is used to filter, sample and A / D convert the rectified output voltage of the generator, and then input it to the processor; a generator speed counter, It is used to receive the speed signal from the generator and send the signal to the processor; the driver is used to send the excitation current to the generator; the processor determines its output according to the output voltage value of the generator and the generator speed value The frequency width of the pulse width modulation controls the magnitude of the excitation current output by the driver through pulse width modulation, and the stabilized voltage source supplies power to the sampler, processor and generator speed counter respectively.
Description
technical field [0001] The invention relates to a control system, in particular to an output voltage control system of an automobile generator. Background technique [0002] The traditional generator stable voltage control method is to make the excitation coil work repeatedly in the switching state. This method forms electromagnetic energy pulses in the generator armature, resulting in large fluctuations in the output voltage, which is not conducive to the normal operation of electrical appliances. work, the harm to the battery is also greater. If the generator suddenly loses a large load, the output voltage of the generator will form a load-dumping pulse high voltage and damage the automotive electrical appliances. [0003] The input and output voltages of traditional automotive generators are usually controlled by electronic regulators, and their working principles are as follows: figure 1 shown. In the figure, the voltage output terminal of the generator is electricall...
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IPC IPC(8): H02J7/24
Inventor 潘景文
Owner SHAANXI HEAVY DUTY AUTOMOBILE