High step-up DC-DC converter for fuel cell vehicles based on merged quadratic boost-cuk

• Autor(a) principal: Fernao Pires, Vitor
• Data de Publicação: 2019
• Outros Autores: Cordeiro, Armando, Foito, Daniel, Silva, José Fernando
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.21/10503
• topic: Fuel cell electric vehicles; Single-switch; Wide voltage-gain; Non-isolated converter; Quadratic Boost and Cuk converters; Low voltage stress

Most fuel cell electric vehicles require wide voltage-gain DC-DC converters to increase and equalize the relatively low voltage of fuel cell stacks with DC link bus or energy-storage devices, such as supercapacitors or batteries. This paper proposes two new non-isolated DC-DC converters suitable for such applications, which can be extended to other electric vehicles as well. The proposed converters combine the main characteristics of both quadratic Boost and Cuk converters, offering high step-up voltage and control simplicity using only one ground referenced active power switch. Additionally, the proposed topologies present reduced voltage stress across the active power switch when compared to other boost converters. Considerations about the design of the proposed converters will also be presented. Experimental results obtained using a laboratory prototype validate the effectiveness and feasibility of the proposed topologies and its suitability for fuel cell electric vehicles.