Control and Stability Analysis of a Direct Current Microgrid based on Modular Multilevel Converter for Integrating Renewable Energy Resources

• Grant number: 21/10421-0
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: March 01, 2022
• End date: July 31, 2023
• Field of knowledge: Engineering - Electrical Engineering - Power Systems
• Principal Investigator: Alfeu Joãozinho Sguarezi Filho
• Grantee: Luis Felipe Normandia Lourenço
• Host Institution: Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas (CECS). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
• Associated research grant: 16/08645-9 - Interdisciplinary research activities in electric smart grids, AP.TEM

Abstract

To strike climate change, the integration of higher levels of renewable energy sources to electric power systems is needed. Direct Current (DC) Microgrids are an alternative for this integration in low and medium voltage levels. A microgrid consists of a set of renewable energy resources, energy storage systems and loads that are managed as a single controllable entity. Generally, a 2 levels voltage source converter is the responsible for interfacing the microgrid with the main grid. However, there is also the possibility of interfacing the DC microgrid through a Modular Multilevel Converter (MMC). In this converter topology, the energy stored in the converter is no longer dependent of the DC circuit voltage level. Therefore, the MMC's energy can be used as an additional degree of freedom for stabilizing the microgrid. Hence, the objective of this research project is to propose a control strategy for an MMC that interfaces a DC microgrid with renewable power generation and energy storage systems from a railway power system taking advantage of the extra degree of freedom corresponding to the energy stored in the MMC. Moreover, a rigorous stability analysis will be performed using mathematical tools. To evaluate the control system's performance, the behavior of the DC microgrid facing a steep disturbance corresponding to the braking energy recovery system will be investigated.

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PRIETO CERON, CARLOS E.; NORMANDIA LOURENCO, LUIS F.; SOLIS-CHAVES, JUAN S.; SGUAREZI FILHO, ALFEU J.. A Generalized Predictive Controller for a Wind Turbine Providing Frequency Support for a Microgrid. ENERGIES, v. 15, n. 7, p. 20-pg., 2022-04-01. (21/10421-0)

CONDE, D. EIOMAR R.; LUNARDI, ANGELO; NORMANDIA LOURENCO, LUIS FELIPE; FILHO ALFEU, J. SGUAREZI. A Predictive Repetitive Current Control in Stationary Reference Frame for DFIG Systems Under Distorted Voltage Operation. IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, v. 10, n. 5, p. 10-pg., 2022-10-01. (21/10421-0)

LOURENCO, LUIS F. NORMANDIA; LOUNI, AMIRA; DAMM, GILNEY; NETTO, MARIANA; DRISSI-HABTI, MONSSEF; GRILLO, SAMUELE; SGUAREZI FILHO, ALFEU J.; MEEGAHAPOLA, LASANTHA. A Review on Multi-Terminal High Voltage Direct Current Networks for Wind Power Integration. ENERGIES, v. 15, n. 23, p. 22-pg., 2022-12-01. (21/10421-0, 22/00323-3)

LUNARDI, ANGELO; NORMANDIA LOURENCO, LUIS F.; MUNKHCHULUUN, ENKHTSETSEG; MEEGAHAPOLA, LASANTHA; SGUAREZI FILHO, ALFEU J.. Grid-Connected Power Converters: An Overview of Control Strategies for Renewable Energy. ENERGIES, v. 15, n. 11, p. 33-pg., 2022-06-01. (16/08645-9, 21/10421-0)

RODRIGUES, LUCAS L. L.; VELASQUEZ, OMAR C. C.; LOURENCO, LUIS F. NORMANDIA; VILCANQUI, OMAR A. C.; SALLES, MAURICIO B. C.; FILHO, ALFEU J. SGUAREZI. Filtered Repetitive MPC Applied to DFIG Grid Side Converter Frequency Support in Microgrids During Island Operation. IEEE ACCESS, v. 11, p. 19-pg., 2023-01-01. (21/10421-0, 22/00323-3)