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Simple construction method for three-level direct current converter based on SDC network

A construction method and converter technology applied in the field of converters to achieve the same voltage gain and simple construction method

Active Publication Date: 2016-06-08
嘉兴市燕知网络科技有限公司
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

Compared with the literature "A Three-Level DC Converter Suitable for High-Voltage and High-Power Converters", this construction method is relatively simple, but it is only applicable to 6 basic single-transistor non-isolated DC converters

Method used

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  • Simple construction method for three-level direct current converter based on SDC network
  • Simple construction method for three-level direct current converter based on SDC network
  • Simple construction method for three-level direct current converter based on SDC network

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Embodiment Construction

[0039] This embodiment proposes a simple construction method of a three-level DC converter based on an SDC network. Compared with the above literature, this method is simpler and applicable to all single-transistor non-isolated DC converters. Firstly, the definition of SDC network is given, and the basic method of extracting or constructing SDC network is introduced; secondly, taking Buck-Boost converter as an example, the basic method of constructing TL (three-level) DC converter based on SDC network is expounded. Steps; then, based on this construction method, a fourth-order TL converter family with continuous input and output currents is derived, and the working principle and characteristics of the SuperbuckTL converter are analyzed; finally, through the 100W / 100kHz principle prototype, The correctness of the theoretical analysis is verified by experiments.

[0040] The invention proposes a simple construction method of a single-tube non-isolated DC converter based on an S...

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Abstract

The invention discloses a simple construction method for a three-level direct current converter based on an SDC network. The method includes the following steps that the SDC network is directly extracted or constructed in an original converter; symmetry transformation is conducted on the SDC network in the original converter; additivity is conducted on the converter obtained after symmetry transformation and the original converter, and the three-level direct current converter can be obtained. The construction method is simpler and applicable to all single-pipe non-isolation direct-current converters.

Description

technical field [0001] The invention belongs to the technical field of converters, and in particular relates to a simple construction method of a three-level DC converter based on an SDC network. Background technique [0002] Combining renewable energy with high-efficiency and energy-saving loads can effectively alleviate the energy crisis and reduce environmental pollution. For this reason, various new photovoltaic utilization forms such as electric vehicle photovoltaic charging piles and photovoltaic energy storage power stations have emerged in recent years. In these photovoltaic systems, photovoltaic arrays are directly connected to battery packs through DC converters to form a high-voltage and large-capacity photovoltaic energy storage system. Among them, the DC converter is not only a photovoltaic interface, but also a battery charger. [0003] In order to improve the MPPT efficiency of the photovoltaic energy storage system and prolong the cycle life of the battery ...

Claims

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Application Information

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IPC IPC(8): H02M3/158
CPCH02M3/1582
Inventor 冯志强秦岭戴翔王亚芳孔笑笑罗松徐张陈
Owner 嘉兴市燕知网络科技有限公司
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