We are an electric railway engineering company which is specialized on computer aided engineering (CAE) applied to electric traction systems. Today, we have over than 20 years of experience on AC- and DC-fed electric railway and systems and we are specialized on the following fields:

• System engineering;

• Power supply;

• Earthing and bonding;

• Simulation.

Within those four competencies, we can provide the following solution to design and expansion of traction systems:

• Line dimensioning according to the desired transportation capacity;

• Power supply dimensioning and specifications;

• Power supply specifications regarding EMC;

• Earth and bonding dimensioning and specifications;

• Train performance simulation;

• Traffic simulation (timetable);

• AC- and DC-fed traction system simulation;

• Power demand and energy calculation for trains and lines;

• Stray current and accessible voltage calculations;

• DC-short circuit calculations. 

• Analisys of touch voltages and stray currents of Line Largo Treze - Capão Redondo of Companhia do Metropolitano de São Paulo (Brazil);

• Analisys of touch voltages and stray currents of Tramo Capuchinos Pza Venezuela of Line 4 of C.A. Metro de Caracas (Venezuela);

• Influence of stray currents and mitigation proposals in the lines of Companhia Paulista de Trens Metropolitanos (Brazil);

• Simulations of Line 4 of Companhia do Metropolitano de São Paulo (Brazil);

• Transient analisys of DC short-circuit of stations Jaguaré and Cidade Dutra of the former  Line C da Companhia Paulista de Trens Metropolitanos (Brazil);

• Simulations of Line 1 of Companhia do Metropolitano de São Paulo (Brazil);

• Simulations of Line 3 of Companhia do Metropolitano de São Paulo (Brazil);

• Analysis of touch voltages and stray currents between the stationss Parque Central and Guaraira-Repano of C.A. Metro de Caracas (Venezuela);

• Simulations of Line 2 of Companhia do Metropolitano de São Paulo (Brazil);

• Energy studies of  Companhia do Metropolitano de São Paulo (Brazil);

• Train performance simulation and traffic simulation of Maceió LRT (Brazil);

• Simulation of the 25 kVac traction sytem of the Intercity train Jundiaí – Campinas (Brazil);

• Simulation of the 25 kVac traction sytem of the Intercity train São Paulo – Santos (Brazil);

• Simulation of Line 7 of Companhia Paulista de Trens Metropolitanos and Intercity train São Paulo – Campinas (Brazil);

• Energy and demand studies for the concession of Lines 8 and 9 of Companhia Paulista de Trens Metropolitanos (Brazil);

• Simulation of Line 1 of Sistema Metroviário de Salvador e Lauro de Freitas (Brazil);

• Simulation of Brasília Metro (Brazil);

• Simulation of trolleybus system BRT-ABC (Brazil);

• Energy and demand studies for the concession of Lines 11, 12 and 13 of Companhia Paulista de Trens Metropolitanos (Brazil);

• PIRES, C. L. Electric railway and metro engineering – From trolleybus to high-speed rail (in Portuguese). 1. ed. Rio de Janeiro: LTC, 2013., 448p.

• PIRES, C. L. Brasil. In: Transporte multimodal en Latinoamérica. Pasado, presente y futuro. 1. ed. Madrid: Fundación de los Ferrocarriles Españoles, 2019. p. 57-65.

• PIRES, C. L. What the IEC Tells Us About Stray Currents: Guidance for a Practical Approach. IEEE Electrification Magazine, v. 4, p. 23-29, 2016.

• PEREIRA, F. H., PIRES, C. L., NABETA S. I.: Optimal placement of rectifier substations on DC traction systems. IET Electrical Systems in Transportation. , v.4, p.62 – 69, 2014.

• ALVES, F. T. ; PIRES, C. L. . Energy saving strategy in São Paulo Metro. In: The Institution of Engineering and Technology's International Conference on Railway Traction Systems (RTS 2010), 2010, Birmingham. Railway Tranction Systems 2010.

• PIRES, C. L., NABETA, S. I., CARDOSO, J. R. DC traction load flow including AC distribution network. IET Electric Power Applications. , v.3, p.289 - 297, 2009.

• PIRES, C. L., NABETA, S. I., CARDOSO, J. R. Second-order model for remote and close-up short-circuit faults currents on DC traction supply. IET Power Electronics. , v.1, p.348 - 355, 2008.

• PIRES, C. L., NABETA, S. I., CARDOSO, J. R. ICCG method applied to solve DC traction load flow including earthing models. IEE Proceedings. Electric Power Applications. , v.1, p.193 - 198, 2007.