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This paper proposes the application of a boost dc-dc converter topology for voltage balancing of the dc link in a diode clamped multilevel inverter, with the purpose to use it in renewable energy generation based on photovoltaic systems or fuel cell stacks. The converter features voltage balance in output capacitors, high voltage gain without utilizing extreme values of duty cycle or transformers, input current ripple reduction by interleaved inductors, low count of components and reduced weight and size. These characteristics make the converter ideal for dc link interface in a renewable energy generation system based on diode clamped multilevel inverter where low input current ripple, high voltage gain and output voltage balance are required. Theoretical analysis along with simulation and experimental validation are presented in this work. I.978-1-4799-5776-7/14/$31.00 ©2014 IEEE

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Today, there are new technologies to produce bioethanol: one of them is the Pressure Swing Adsorption (PSA) process. This process has displaced other separation technologies due to the use of natural adsorbents and its methodology to obtain high purities with a lower energy cost. The aim of this work focuses on the optimization of the PSA process (experimental case) to obtain a higher recovery and production of bioethanol using lower energy consumption. The results are favorable since the energy cost is reduced to a range of 60% and 62%, obtaining purities above 99% wt of ethanol and recovery between 75% and 77.41%. The bioethanol produced and purified in the different scenarios meets international standards to be used as a fuel or oxygenating additive.