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Single -phase single current source inverter

A current source type and inverter technology, which is applied in the direction of adjusting electric variables, instruments, converting DC power input to DC power output, etc., can solve the problems that cannot be processed at the same time, achieve the reduction of inductance demand, and suppress leakage current , the effect of suppressing

Active Publication Date: 2022-08-09
湖南珂拓电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a single-phase single-stage current source inverter, which solves the technical problem that the prior art cannot handle the above three problems at the same time

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  • Single -phase single current source inverter
  • Single -phase single current source inverter
  • Single -phase single current source inverter

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Embodiment Construction

[0059] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0060] For ease of description, the word "switch tube" in the examples of the present invention refers to switches, and in the embodiments of the present invention, a MOSFET with embedded parallel diodes is taken as an example. Since the switching devices of the current source inverter cannot withstand reverse voltage, the switching devices require specific requirements. The switch devices on the bridge ar...

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Abstract

The present invention provides a single -phase single -level current source inverter involving the field of electronic and power technology.The single -phase single current source inverter of the present invention can switch between the BUCK mode and Boost mode according to the relationship between the input voltage and the output voltage.It is necessary to keep the input -side current with a constant DC, and the inductance demand for the input side can be greatly reduced.At the same time, the inverter can maintain the constant mode voltage in its entire work process, so that the inverter can effectively suppress the production of leakage current and can effectively apply it to the field of photovoltaic power generation.

Description

technical field [0001] The invention relates to the technical field of electronic power, in particular to a single-phase single-stage current source type inverter with small input side inductance and leakage current suppression capability. Background technique [0002] Inverters are divided into Voltage Source Inverter (VSI) and Current Source Inverter (CSI) according to the characteristics of the DC side power supply. VSI can only work when the DC voltage is constant and higher than the AC voltage. In the case of side voltage peak, and the input current ripple is large, it is necessary to add dead zone to prevent bridge arm shoot-through. Compared with VSI, CSI has the advantages of increased voltage, adjustable power factor, and no need for shoot-through protection. In single-stage boost conversion occasions, especially in photovoltaic cell grid-connected systems, CSI is more suitable than VSI. Although CSI has many advantages, there are still many challenges to be widel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/5387H02M3/158H02J3/38
CPCH02M7/5387H02M3/1582H02J3/381H02J2300/24Y02E10/56
Inventor 梁炜
Owner 湖南珂拓电子科技有限公司