A dual-channel boost circuit inverter system and its control method

Abstract

The invention provides a two-way boosted circuit inverter system and a controlling method of the two-way boosted circuit inverter system. The two-way boosted circuit inverter system comprises a boosted module, an inverting module and a controlling module, wherein the inverting module calculates the initial rated power of the boosted module, a first power detecting circuit detects the real power of a first boosted circuit, a second power detecting circuit detects the real power of a second boosted circuit, and the controlling module regulates the rated power according to the real powers of the two way boosted circuits. The two-way boosted circuit inverter system dynamically regulates the rated power according to the real powers of the two way boosted circuits. The controlling method reassigns the rated power by changing the rated powers of the two boosted circuits when the real power of one way boosted circuit is equal to the rated power and the real power of the other way boosted circuit is smaller than the rated power, so that the boosted circuits can receive more real power, and power sent to a power grid can be increased.

Description

technical field [0001] The invention relates to the technical field of circuit design, in particular to a dual-way boost circuit inverter system capable of dynamically changing the rated power of two boost circuits and a control method thereof. Background technique [0002] With the adjustment of the energy structure, people gradually shift their attention to new energy, especially in European countries. Thanks to the preferential policies for the development of new energy in Europe, the photovoltaic inverter industry is showing a momentum of vigorous development. All important photovoltaic inverter manufacturers have paid attention to the unique local environment while selling their products. Taking Germany as an example, most Germans live in a single-family house with the top of the house as high as the middle. Both ends are mostly low. For this reason, when installing solar panels, solar panels are installed on both sides of the roof. Considering the above factors, some m...

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Problems solved by technology

[0004] However, the control method using this two-way boost circuit cannot make full use of the energy generated by the photovoltaic panel, because this control method does not take into account the characteristics of the photovoltaic panel, and the energy generated by the photovoltaic panel varies with the intensity of light. The intensity of light received by the photovoltaic panels on both sides of the roof is different in reality, which leads to the difference in the actual power reaching the two boost circuits. The method of step-up is to assign the same rated power to the two boost circuits, and this rated power is fixed, which may cause the actual power of one side to reach the rated power, but due to the limitation of the rated power, The actual power can no longer be increased; while the actual power on the other side cannot reach the rated power, and even the actual power is much different from the rated power. In this way, it leads to the ability to generate more power, but due to the incorrect distribution of the rated power, And the appearance of the phenomenon of wasting this part of energy

After this situation occurs, for users, while wasting energy, it also reduces the economic value brought by photovoltaic power generation

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