Rotating speed self-adaptive control method of variable frequency generator set for hybrid energy system

Abstract

The invention relates to a rotating speed self-adaptive control method of a variable-frequency generator set for a hybrid energy system, which comprises the following steps of: when a starting condition is met, starting the variable-frequency generator set, and supplying power to load equipment through a switching power supply; the variable-frequency generator set performs rotating speed self-adaptive adjustment to enable the rotating speed to adapt to load equipment power; increasing the rotating speed of the variable-frequency generator set; switching power supply soft start; judging whether the charging current of the switching power supply is greater than or equal to a first threshold value or not, judging whether a self-adaptive speed increasing step or a self-adaptive speed reducing step needs to be carried out or not, if the self-adaptive speed increasing step needs to be carried out, delaying the self-adaptive speed increasing step, and if the self-adaptive speed reducing step needs to be carried out, returning to the self-adaptive speed reducing step; and the frequency conversion generator set carries out self-adaptive speed increasing, the switching power supply carries out current limiting, so that the rotating speed of the frequency conversion generator set is increased to the stored value, the speed increasing slope is adjusted, and after the current limiting of the switching power supply is recovered to the first threshold value, the step of self-adaptive speed reducing is carried out again.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a rotational speed self-adaptive control method of a variable frequency generator set for a hybrid energy system. Background technique [0002] With the rapid development of my country's Internet and the large-scale construction and application of 5G technology, not only will a large number of new communication base stations be built, but the original base stations will also be upgraded and improved accordingly. It is estimated that the number of 5G base stations alone will exceed 15 million in the future . [0003] And so many base stations are not only built in cities with large populations and well-developed power grids, but will also cover some remote villages, towns, counties and scattered herdsmen. These areas are sparsely populated, far away from the power grid, and have small power loads. Stable power supply cannot be achieved by extending the power grid; coupled with har...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention provides a speed adaptive control method for a variable frequency generator set for a hybrid energy system, to solve the above-mentioned control method for a variable frequency generator set for a hybrid energy system based on the traditional "look-up table method" with low versatility and poor applicability. The problem of low performance and low accuracy, the present invention does not rely on the original data of the "look-up table method", and obtains relevant parameters such as load power, charging current, and frequency conversion generator set speed, and then judges the frequency conversion by the preset logic. The speed of the generator set is adjusted in real time, so that the frequency conversion generator set is always in a more economical working condition when it is working, and the adaptive adjustment of the speed of the frequency conversion generator set is realized.

Images