What are the product categories of voltage regulators?

Voltage regulator (AVR) is one of the supporting equipment of battery management integrated circuit (IC). It is specially designed for supporting fundamental wave, harmonic compound excitation or AC brushless generator equipped with permanent magnet generator excitation (PGM system).

The voltage regulator is made by using the switching characteristics of the transistor. That is, the transistor is connected in series in the excitation circuit of the generator as a switch. According to the output voltage of the generator, the on and off of the transistor is controlled, and the excitation current of the generator is adjusted to stabilize the output voltage of the generator within a certain range.

According to the classification of working principle, voltage regulators can be generally divided into the following types:

The contact type voltage regulator is applied earlier. The contact vibration frequency of this regulator is slow, there are mechanical inertia and electromagnetic inertia, the voltage regulation accuracy is low, the contact is easy to generate sparks, the radio interference is large, the reliability is poor, and the life is short. It has been eliminated.

With the development of semiconductor technology, transistor regulator is adopted. Its advantages are: the switching frequency of the triode is high, no spark is generated, and the adjustment accuracy is high. It also has the advantages of light weight, small volume, long service life, high reliability, and small radio wave interference. It is now widely used in Dongfeng, Jiefang and many medium and low-grade vehicles.

In addition to the advantages of the transistor regulator, the integrated circuit regulator is also ultra small. It is installed inside the generator (also known as the built-in regulator), reducing the external wiring and improving the cooling effect. It is now widely used in Santana. Audi and many other sedan models.

After the total load of the system is measured by the electric load detector, the signal is transmitted to the generator computer, and then the generator voltage regulator is controlled by the engine computer to timely connect and disconnect the magnetic field circuit, which can reliably ensure the normal operation of the electrical system, fully charge the battery, reduce the engine load, and improve the fuel economy.