High Power Medium Voltage DC Grid-Connected Converter for Renewable Energy Generation
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Beschreibung
The book focuses on the topology and modulation of non-isolated and isolated high-power DC/DC converters. Firstly, two non-isolated soft-switching resonant step-up structures are proposed. Secondly, the auxiliary-and-main-currents-diversion idea is introduced to significantly reduce the switching loss of the converter, based on which a series of isolated ZCS resonant converters is proposed. Thirdly, the transformer magnetic flux density of isolated resonant converter is totally studied and an asymmetric pulse frequency modulation is proposed to avoid the transformer saturation problem. Finally, three different types of ±35kV/500kW DC grid-connected converters are successfully demonstrated in Zhangbei Renewable Energy Base of China.
The book focuses on the topology and modulation of non-isolated and isolated high-power DC/DC converters. Firstly, two non-isolated soft-switching resonant step-up structures are proposed. Secondly, the auxiliary-and-main-currents-diversion idea is introduced to significantly reduce the switching loss of the converter, based on which a series of isolated ZCS resonant converters is proposed. Thirdly, the transformer magnetic flux density of isolated resonant converter is totally studied and an asymmetric pulse frequency modulation is proposed to avoid the transformer saturation problem. Finally, three different types of ±35kV/500kW DC grid-connected converters are successfully demonstrated in Zhangbei Renewable Energy Base of China.
Introduces medium voltage collection methods for grid-connected renewable energy generation in detail Analyzes non-isolated and isolated high-power high step-up ratio DC/DC converter Establishes and verifies three different types of ±35kV/500kW PV DC grid-connected converters
Autor*in
Wu Chen
Themen in »High Power Medium Voltage DC Grid-Connected Converter for Renewable Energy Generation«
HVDC grid-connected converter Renewable energy High-power DC/DC converter Resonant converter Zero current switching High-frequency high-voltage transformer