Multi-source fusion power transformation topology circuit and transformation topology method thereof

Abstract

The invention relates to a multi-source fusion power transformation topology circuit and a transformation topology method thereof. When the input is an AC power source, a first conversion switch S1 isconnected with an AC source VAC, a second conversion switch S2 is connected with a drain electrode of a second MOS tube Q2, and a first MOS tube Q1, the second MOS tube Q2, a third MOS tube Q3 and afourth MOS tube Q4 form a half-bridge synchronization rectification circuit; when the input is a DC power source, the first conversion switch S1 is connected with a DC source VDC, the second conversion switch is connected with an input end of a first energy storage inductor L1, and the third MOS tube Q3, the fourth MOS tube Q4, a first power diode D5 and a second power diode D6 form a staggered parallel Boost circuit. The method is advantaged in that AC and DC transformation functions are integrated, based on the staggered parallel Boost topological circuit, through function reuse of the switch tubes Q3 and Q4, in combination with the switch tubes Q1 and Q2, half-bridge synchronization rectification is commonly realized, not only can AC source power transformation demand represented by a nucleus power source be realized, but also the method is suitable for DC energy systems represented by solar cells.

Description

technical field [0001] The invention relates to the technical field of power conversion of a space power supply system, in particular to a multi-source fusion power conversion topology circuit and a topology conversion method thereof. Background technique [0002] Energy is the primary problem to be solved in many human exploration space activities represented by star (moon or Mars) bases. Due to the long moon / fire night, surface dust, and small light constant, the photovoltaic energy system cannot meet the power supply requirements of the star surface base alone, and the nuclear power supply has the characteristics of high energy density, long life, and no dependence on light. Therefore, a variety of Formal energy combined power supply becomes an ideal solution. [0003] Large-scale reconfigurable satellite platforms are the future development trend, and the energy supply of a certain distributed satellite is insufficient, and other distributed satellites with redundant en...

AI Technical Summary

Problems solved by technology

[0004] At present, the photovoltaic energy system is supplied in the form of DC, while the nuclear energy is output in the form of AC. The existing aerospace power regulation topology technology is only suitable for a single type of energy input form, which cannot meet the needs of future spacecraft with high power and multiple energy fusion power supplies.

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