The 4rd International IEEE Workshop on Power Electronics and Power Quality Applications will be held on May 30 to 31, 2019, at Universidad Nacional de Colombia Sede Manizales, Manizales, Colombia. This biannual workshop provides a space for students, academics, and industry professionals to collaborate on meeting the ever-increasing power electronicsand power quality challenges in the Latin America region. The workshop covers a range of topics, including power electronics (PE) converters, adjustable speed drives, PE in transmission and distribution, power quality (PQ) analysis, PQ design and modeling, and simulation & education in PE/PQ.