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Bi-directional sparse parallel partial resonant ac-link inverter

机译：双向稀疏并联部分谐振交流链路逆变器

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Due to their remarkable merits, partial resonant ac-link inverters have received noticeable attention during the last few years. These bi-directional dc/ac inverters are compact, reliable, efficient, and they offer longer life time compared to the other types of inverters. However, they require more switches which make the control process more complicated. In this paper, a modified configuration that reduces the number of switches from 20 in the original dc-ac inverter to 18 is proposed. The principle of the operation in the proposed inverter, which is named sparse parallel partial resonant ac link inverter, is similar to that of the original inverter. Despite reducing the number of switches, the principle of operation of the proposed inverter is the same as the original inverter. Therefore, partial resonance time during which no power is transferred is still very short. The proposed inverter offers higher reliability compared to the original inverter. Another important feature of this inverter is that it can be fabricated by IGBT modules, which are more compact and cost-effective, compared to the discrete devices. Hence, the proposed converter is expected to be compact, less expensive, and less complicated compared to the conventional partial resonant ac link converters. This paper evaluates the performance of the proposed inverter through both simulation and experiment. The efficiency and reliability of the parallel partial resonant inverter and the sparse parallel partial resonant inverter are also compared in this paper.
机译：由于其非凡的优点，在过去的几年中，部分谐振交流链路逆变器受到了关注。这些双向dc / ac逆变器紧凑，可靠，高效，与其他类型的逆变器相比，使用寿命更长。但是，它们需要更多的开关，这会使控制过程更加复杂。在本文中，提出了一种将开关的数量从原始dc-ac逆变器中的20个减少到18个的修改配置。所提出的逆变器（称为稀疏并联部分谐振交流链路逆变器）的工作原理与原始逆变器相似。尽管减少了开关数量，但建议的逆变器的工作原理与原始逆变器相同。因此，不传递功率的部分谐振时间仍然很短。与原始逆变器相比，该逆变器具有更高的可靠性。该逆变器的另一个重要特征是，它可以由IGBT模块制造，与分立器件相比，该模块更紧凑且更具成本效益。因此，与常规的部分谐振交流链路转换器相比，期望所提出的转换器是紧凑的，便宜的，并且复杂的。本文通过仿真和实验对所提出的逆变器的性能进行了评估。本文还比较了并联部分谐振逆变器和稀疏并联部分谐振逆变器的效率和可靠性。

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