INVERTING DIRECT CURRENT VOLTAGE STEP-UP CONVERTER Russian patent published in 2021 - IPC H02M3/07 

FIELD: conversion of power.

SUBSTANCE: invention relates to the field of conversion technology and can be used in creating energy-efficient autonomous electric power supply systems for aerial and space vehicles using sources with voltage of different polarity relative to a common bus. The inverting direct current voltage step-up converter comprises two input terminals for connecting a direct current voltage source, n chains connected in parallel between the input terminals, each one consisting of a charging transistor switch, reactor, capacitor and charging diode, connected in series. Inserted into the converter are a discharging transistor switch connected between the grounded input terminal and the junction point of the reactor and the charging transistor switch of the first chain, (n-1) discharging transistor switches, each one connected between the junction point of the charging transistor switch and the reactor of the subsequent chain and the junction point of the charging diode and the capacitor of the previous chain, a discharging diode connected between the junction point of the charging diode and the capacitor of the last chain and the output terminal, a load is connected between the output terminal and the grounded input terminal. To ensure recovery of electric power from the load back to the primary source, additional charging and discharging transistor switches can be used as charging and discharging diodes of the converter, forming bidirectional transistor switches with the charging and discharging transistor switches already provided in the power circuit of the converter.

EFFECT: improvement in the weight and size indicators of the inverting step-up converter due to the elimination of an additional input source from the power circuit thereof and preset level of negative output voltage from a common direct current voltage source with a grounded negative terminal obtained in an energy-efficient manner.

2 cl, 2 dwg