Inductor built-in boost unit converter

Abstract

The invention relates to an inductor built-in boost unit converter, belonging to the technical field of power electronic converters. The inductor built-in boost unit converter comprises an inductor built-in boost unit, a direct-current voltage source, a power switch tube, an output power diode and a filter capacitor, wherein the inductor built-in boost unit comprises a coupling inductor, an energystorage capacitor and a freewheel diode. By the invention, the voltage gain can be increased to a relatively high level, the defect that a conventional Boost circuit is insufficient in boost capacityis overcome, and the inductor built-in boost unit converter has the advantages of high gain, simple structure and high conversion efficiency. Compared with an existing coupling inductor boost circuit, it is unnecessary to add extra leakage inductance energy absorption and switch tube clamping circuits, the inductor built-in boost unit converter has the simplest circuit structure and the minimum components, and the conversion efficiency and the reliability are higher.

Description

technical field [0001] The invention relates to the field of power electronic converters, in particular to a converter with a built-in inductance boost unit. Background technique [0002] In many low-input, high-output voltage applications such as new energy power generation, industrial and mining lighting, and automotive electronics, high-gain converters are required for voltage conversion. The theoretical output gain of the traditional Boost converter can reach infinity, but in practice, due to the existence of parasitic parameters, the actual gain is difficult to exceed and the conversion efficiency is low. The traditional coupled inductor boost circuit needs to add passive or active clamping The circuit is used to absorb the leakage inductance energy and suppress the voltage peak of the switching tube. The circuit structure is complex and the number of components is large. Therefore, it is necessary to design a converter with an inductance built-in boost unit that does n...

AI Technical Summary

Problems solved by technology

The theoretical output gain of the traditional Boost converter can reach infinity, but in practice, due to the existence of parasitic parameters, the actual gain is difficult to exceed and the conversion efficiency is low. The traditional coupled inductor boost circuit needs to add passive or active clamping circuit to absorb leakage inductance energy and suppress switching tube voltage spikes, the circuit structure is complex, and the number of components is large, so it is necessary to design a converter with an inductance built-in boost unit that does not require additional clamping circuits

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