Photovoltaic power generation-used bidirectional DC/DC converter

Abstract

The invention discloses a photovoltaic power generation-used bidirectional DC / DC converter, which comprises a Udc, a D1, a D2, a G1, a G2, an L, a C and a Battery, wherein one end after the D1 and theG1 are parallelly connected is electrically connected with the positive end of the Udc; one end after the D2 and the G2 are parallelly connected is electrically connected with the negative end of theUdc; the other end after the D1 and the G1 are parallelly connected is electrically connected with the other end after the D2 and the G2 are parallelly connected; one end after the D2 and the G2 areparallelly connected is electrically connected with one end of the Battery; the other end after the D2 and the G2 are parallelly connected is electrically connected with one end of the L; and the other end of the L is electrically connected with the other end of the C and the other end of the Battery. The photovoltaic power generation-used bidirectional DC / DC converter has the beneficial effects that the working mode of the converter can be regulated in a two-way mode, output power applicable to a photovoltaic array can be regulated better, and the conversion effects of the converter are improved.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a bidirectional DC / DC converter for photovoltaic power generation. Background technique [0002] Photovoltaic power generation has no pollution, no noise, and low operating costs. It is an ideal sustainable energy source and has a good development prospect. It is predicted that the proportion of solar energy in the energy structure will reach 13.5% by 2050, and it will be one of the main alternative energy sources for fossil energy in the future. After years of development, photovoltaic power generation is gradually developing from the past small-scale off-grid system to large-scale grid-connected power generation. Photovoltaic grid-connected power generation technologies based on maximum power tracking control and various grid-connected inverter controls have been extensively studied, and converters are needed in photovoltaic power generation. [0003] The current converter f...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a bidirectional DC / DC converter for photovoltaic power generation to solve the problem that the current converter for photovoltaic power generation proposed in the above background technology cannot bidirectionally regulate the working mode of the converter, so that it cannot be better adjusted to adapt to photovoltaic power generation. The output power of the array leads to the problem that the conversion effect of the converter is poor

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