Single-stage single-phase asymmetric full-bridge inverter

A full-bridge inverter, asymmetric technology, applied in the field of power electronics, can solve the problem of high cost, achieve the effect of low cost, high power density, and low output waveform distortion
CN112994500AInactive Publication Date: 2021-06-18QINGDAO UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO UNIV
Publication Date
2021-06-18
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to the technical field of power electronics and particularly relates to a single-stage single-phase asymmetric full-bridge inverter. The inverter comprises an energy storage inductor, a single-phase asymmetric inverter bridge, a boost buffer capacitor and an output filter, wherein the single-phase asymmetric inverter bridge comprises five two-quadrant power switches capable of bearing unidirectional voltage stress and bidirectional current stress. The single-stage boost inverter has the advantages of single-stage boost conversion, capability of suppressing secondary ripple current of an input direct-current voltage source and common-mode current of an inverter system, high power density, high conversion efficiency, low distortion degree of an output waveform, high reliability, low cost and the like, and is suitable for small and medium-capacity single-phase boost inverter occasions.
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Description

Technical field:

[0001] The invention relates to the technical field of power electronics, in particular to a single-stage single-phase asymmetric full-bridge inverter. Background technique:

[0002] With the continuous growth of people's demand for energy and the urgent need to improve the environment, new energy sources such as solar energy and wind energy will occupy an increasingly important position in the energy layout of various countries. Photovoltaic power generation system has the characteristics of easy cleaning and sustainability, long life, high efficiency and low cost, and has very broad development prospects in the power market.

[0003] In recent years, due to the advantages of non-isolated photovoltaic inverters in terms of volume and cost, it has attracted widespread attention. The non-isolated photovoltaic inverter has secondary ripple power pulsation on the DC side, which will affect the performance of the photovoltaic system MPPT, reducing the system's ...

Claims

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