This book constitutes the refereed proceedings of the 13th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2022, held in Caparica, Portugal, during June-July 2022.The 22 full papers presented were carefully reviewed and selected from 48 submissions. The papers present selected results produced in engineering doctoral programs and focus on technological innovation for industry and service systems. The papers are organized into the following topical sub-headings: Smart Systems Thinking; Cyber-physical Systems; health-related Digitalization; Electric Systems and Machines; Smart Devices; and Control and Digital Platforms.