Novel isolation actively-clamped interleaved parallel Boost soft switching converter and working method thereof

Abstract

The invention discloses a novel isolation actively-clamped interleaved parallel Boost soft switching converter and a working method thereof. A first inductor, a second inductor and a third inductor constitute one set of coupled inductors. A fourth inductor, a fifth inductor and a sixth inductor constitute the other set of coupled inductors. The number of turns of the second inductor, the third inductor, the fifth inductor and the sixth inductor is n2. The number of turns of the first inductor and the fourth inductor is n1. A seventh inductor and an eighth inductor are excitation inductors of coupled inductors. A ninth inductor and a tenth inductor are equivalent inductors of coupled inductors. A first MOS tube and a second MOS tube are main switching tubes. A first diode and a second diode are output diodes. A first capacitor and a second capacitor are parallel capacitors on the first MOS tube and the second MOS tube. A third capacitor is a clamped capacitor. The turns ratio N of coupled inductors is defined as n2:n1.

Description

technical field [0001] The invention relates to the field of automatic control of electronic circuits, in particular to a novel isolated active clamp interleaved parallel Boost soft switching converter and a working method. Background technique [0002] With the global energy shortage and serious environmental problems, new energy resources such as photovoltaics, fuel cells, wind energy, geothermal energy, etc. have received widespread attention around the world. However, the output voltage of most new energy resources such as photovoltaics and ignition batteries is low, and a high-gain converter is required in practical applications. In theory, Boost, Buck-Boost and flyback converters can provide high voltage gain at extreme duty cycles. In fact, the voltage gain of these converters is limited by the equivalent series resistance of switches, diodes, inductors and capacitors, and the influence of leakage inductance. Moreover, not only will it introduce very large current r...

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Problems solved by technology

However, the integrated forward converter and type converter circuits are quite complex and expensive

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