What are the main reasons for AVR damage

The AVR circuit consists of three parts: rectification main circuit, voltage detection circuit, and comparison control circuit; In terms of excluding the possibility of damage caused by the quality of the original electrical components themselves, in the entire AVR circuit, the operating frequency of the main circuit and the comparative control circuit varies the most; The rectifier bridge in the main circuit and the transistors in the comparison circuit have more frequent changes, accounting for over 90% of the damage rate of the entire AVR; Considering that the AVR on imported generators is a non removable component that needs to be replaced if damaged, we mainly analyze the reasons for the damage to the AVR on the generator. Avoiding AVR damage as much as possible is the most important, as long as it is used properly, it can improve the service life of the AVR. The more stable the generator voltage, the smaller the frequency of variation within the AVR; The smaller the switching action of the transistors in the comparative circuit, the lower the probability of AVR damage; The output load is relatively stable, and the smaller the frequency of variation in the AVR, the smaller the switching action of the transistors in the comparison circuit, and the lower the probability of AVR damage; The more stable the speed of the diesel engine, the smaller the oscillation impact of the changing current on the AVR; Frequent "traveling" and overload, with a significant difference in three-phase load, are the main causes of AVR damage; Choose a generator set with E, F, and C fuel systems, as the frequency variation is small, the use of AVR will be more reliable.