General objective Improve control law performance and fault tolerance for AC/DC Hybrid Microgrids (HMG) discrete/continuous converters and compensation systems using hierarchical methodologies, optimization of their control laws, and the use of fault-tolerant control strategies. Justification The high dependence on fossil fuels for various sources of electricity generation, CO2 emissions into the atmosphere, and the constant increase in energy consumption due to the increase in alternative electric means of cooking in homes and the insertion of electric mobility; All this, together with the poor quality of the energy supplied by a conservative and aging electrical network, have led to the energy system being unsustainable and requiring modifications to handle these problems. MGs as smart grids on a smaller scale represent one of the most interesting solutions for researchers. MGs improve power flow in distribution networks and reduce power losses in transmission lines by interconnecting distributed generation, battery energy storage systems (BESS) and loads (mainly based on droop control). ) have adequate behavior when implemented in hybrid microgrids, however, these conventional control strategies also have drawbacks such as: - There is no capacity for non-linear load sharing, - Load-dependent frequency deviation, - Compensation between voltage regulation and current exchange between the converters, - Management of the system in case of failures, - among others. To deal with these problems, this scientific project proposes to deepen the study, and develop new techniques and methodologies for the three-level hierarchical control model, mainly compensating voltage and frequency deviations at the secondary level in coordination with the primary level. . The control law to be developed for the main power controllers and discrete/continuous compensation devices must self-reconfigure to obtain optimal performance of the control system and the Micro-grid. The methodologies studied will allow electrical systems based mainly on HMGs to deliver quality and reliable energy to the consumer, both in interconnected and isolated operating modes from the electrical network.
|Effective start/end date||17/03/19 → 17/03/19|
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