METHOD OF REGULATING THE OUTPUT VOLTAGE OF A DC VOLTAGE BOOST CONVERTER Russian patent published in 2021 - IPC H02M3/18 

FIELD: converter technology.

SUBSTANCE: proposed invention relates to the field of converter technology and can be used to create small-sized and energy-efficient multi-level DC voltage step-up regulators. An adjustable DC voltage boost converter consists of input, output and common terminals for connecting a constant voltage source and load, respectively, n parallel-connected chains connected between the input and common terminals, each consisting of a series-connected charging diode, a capacitor, a reactor and a charging switch in the form of a transistor -diode module. The converter also contains (n-1) bit switches, each of which is connected between the junction point of the reactor and the charging switch of the previous chain and the junction point of the charging diode and the capacitor of the subsequent chain, the last bit switch in the form of a transistor-diode module connected between the input terminal and the point connecting the reactor and the charging switch of the last chain, a discharge diode connected between the connection point of the charging diode with the capacitor of the first chain and the output terminal. The proposed method for smooth regulation of the output voltage of the DC voltage step-up converter is carried out by alternately changing the duration of the open state of its bit switches, in the range from zero to half the period of their switching frequency. The order of managing the durations of the open state of the keys is determined depending on the problem of decreasing or increasing the voltage. In a limited range, smooth regulation of the output voltage of the converter can also be implemented by controlling the duration of the open state of the charging switch of the last chain in the range from zero to half of its switching frequency, or by jointly controlling the duration of the open state of the charging switch of the last chain and the last bit switch within the same limits.

EFFECT: invention makes it possible to expand the functionality of the prototype by providing energy-efficient smooth adjustment of its output voltage without the use of additional regulating elements while maintaining high efficiency and improved weight and dimensions.

1 cl, 3 dwg