SWITCHED-CAPACITOR-BASED HYBRID RESONANT BIDIRECTIONAL BUCK-BOOST CONVERTER FOR DIFFERENTIAL POWER PROCESSING IN PHOTOVOLTAIC SYSTEMS
DOI:
https://doi.org/10.59627/cbens.2024.2332Keywords:
Mismatch, DPP converters, photovoltaic stringsAbstract
In most practical applications, photovoltaic (PV) modules should be connected in series to reach a desiredvoltage level for a specific application. An important problem that frequently affects this type of connection is mismatch among the modules. It can be caused by several factors that can be classified into permanent or temporary. As a result, there will be a huge reduction of the power provided by the FV series. To mitigate this problem, bypass diodes are the most widely used technique owing to its simple implementation. However, this technique is only appropriate for temporary mismatch. In this way, the aim of this study is to develop and implement a novel topology named based on differential power processing. It consists of a hybrid architecture that incorporates elements from both BBB and SC converters. In turn, the introduced solution referred to as ReSC converter provides operation under soft-switching conditions while mitigating such undesirable losses. Among the main advantage of the proposed topology, it can be cited lower switches amount, lower voltage stress and soft switching operation. Experimental testes were caried out and have shown an improvement in harvested energy of up to 50%
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