期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 55, 期 6, 页码 6376-6388出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2019.2932696
关键词
Auto-transformer; boost; continuous input current; mutual coupling
资金
- Natural Science Foundation of China [11702073]
- Shenzhen Key Lab Fund of Mechanisms and Control in Aerospace [ZDSYS201703031002066]
High voltage gain using a mutually coupled inductor network is quite popular in recent years for Z source converters. To achieve high gain, reduced number of components used is a prime challenge to improve efficiency and reduce the cost and size. In the coupled inductor network, the energy stored is twofold, hence, the effective number of components is reduced. Moreover, the boosting factor is also governed by the number of turns which again helps in reducing the number of components. In general, coupled inductor network is based on two winding transformers. However, to increase the effective number of turns, an autotransformer principle may be used where turns ratio is increased by one as compared to two winding transformers. Therefore, in this article, a coupled inductor network is proposed which is based on the autotransformer concept. The proposed converter is called as quasi-mutually coupled active impedance source converter. The proposed converter has a continuous input current which is helpful in reducing the current stress on the source. The operation, steady-state analysis and its comparison with the existing topology are discussed. Moreover, the developed topology is extended for hybrid topology. Furthermore, the converter is validated using experiment to prove its feasibility.
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