Microgrids have become an alternative for integrating distributed generation to supply energy to isolated communities, so their control and optimal management are important. This research designs and simulates the three levels of control of a DC microgrid operating in isolated mode and proposes an Energy Management System (EMS) based on Model Predictive Control (MPC), with real-time measurement feedback for optimal energy dispatch, which ensures power flow distribution and operation at minimum cost while extending the lifespan of the BESS. The EMS can react to disturbances produced in the lower control levels. The microgrid’s performance is analyzed and compared in two scenarios without EMS, and with EMS against changes in irradiation and changes in electricity demand. The fulfillment of the power balance is evaluated by analyzing the power delivered by each generation unit, the operating cost, and the state of charge of the battery (SOC).
2 January 2022 in Revista Boaciencia. Saúde e Meio Ambiente
La pandemia del COVID-19 irrumpió en la cotidianeidad de todas las escuelas de Argentina, impactando especialmente en los sectores más empobrecidos, como son las comunidades indígenas. En este artículo, sistematizamos los desafíos actuales que enfrenta la Educación Intercultural Bilingüe con población indígena en dos provincias del noreste del país (Chaco y Misiones), a partir de una encuesta online a treinta y cinco docentes indígenas y no indígenas, que incluimos al reformular las técnicas usuales de nuestra aproximación etnográfica.