Снижение низкочастотных пульсаций входного тока DC-DC преобразователей в составе инверторов

Abstract

The processes are investigational in a two-stage inverter DC-DC/DC-AC structure associated with the presence of low-frequency input ripple current consumption. The simple model reflecting influence of the intermediate capacitor store of energy for the size of pulsations is offered. The timing diagrams of current of the capacitive storage and ripple are shown. The graphic dependences are resulted, allowing to estimate the size of pulsations and the additional power losses, due to their presence. Propose a compensation method to reduce input ripple current in a single-system voltage regulation on the capacitive storage device that allows you to achieve a significant reduction in ripple current minimum technical and cost without degrading system performance