Energy savings analysis and harmonics reduction for the electronicballast of T5 fluorescent lamp in a building’s lighting systemP. Chiradejaa, A. Ngaopitakkulb,∗, C. JettanasenbaFaculty of Engineering, Srinakharinwirot University, Bangkok 10110, ThailandbFaculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailanda