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An inverter topology circuit and single-phase inverter

A single-phase inverter and topological circuit technology, applied in the direction of irreversible DC power input conversion to AC power output, electrical components, output power conversion devices, etc., can solve large and high frequency capacitive leakage current, power accidents, equipment Power damage and other problems, to achieve the effect of reducing high-frequency capacitive leakage current and suppressing high-frequency components

Active Publication Date: 2021-06-11
SUNGROW POWER SUPPLY CO LTD
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  • Claims
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Problems solved by technology

[0004] However, due to the parasitic parameters of the devices in the single-phase Heric topology circuit, LC resonance will occur in the single-phase Heric topology circuit, which will cause a large high-frequency capacitive leakage current in the single-phase Heric topology circuit, even if the inverter AC Doped with large high-frequency capacitive leakage current, which will cause electrical damage to subsequent equipment, and will cause electrical accidents in severe cases

Method used

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[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055]In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comp...

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Abstract

The invention relates to the technical field of power electronics, in particular to an inverter topology circuit and a single-phase inverter. The inverter topology circuit includes a Heric topology, an input capacitor branch, a first output inductor, a second output inductor and a leakage current loop. The leakage current loop can provide a high-frequency capacitive leakage current path for the inverter topology circuit, suppress the high-frequency component of the external leakage current, thereby reducing the doping of high-frequency capacitive leakage current in the alternating current after inverter, and can also protect the normal operation of subsequent equipment .

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an inverter topology circuit and a single-phase inverter. Background technique [0002] Traditional single-phase inverters are usually isolated inverters, which have their own transformers to achieve their own electrical isolation, but this will reduce their efficiency and increase their size and weight. [0003] At present, in order to improve the efficiency of the traditional single-phase inverter and reduce its own cost, the single-phase inverter usually does not have a transformer, and its commonly used topology is as follows figure 1 The single-phase Heric topology circuit shown. [0004] However, due to the parasitic parameters of the devices in the single-phase Heric topology circuit, LC resonance will occur in the single-phase Heric topology circuit, which will cause a large high-frequency capacitive leakage current in the single-phase Heric topology circuit, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/12H02M1/44H02M7/48
CPCH02M1/126H02M1/44H02M7/48H02M1/0038
Inventor 张凤岗王郑李娇丽
Owner SUNGROW POWER SUPPLY CO LTD
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