Dorin O. NEACŞU
Professor, EASI Department, Gh. Asachi Technical University of Iasi, Bd. Carol I, no. 11 A, Iasi, 700506, Romania
Research interests:
Dc-DC Power Convertors, State-space Methods, Control System Synthesis, Switching Convertors, Pi Control, Elemental Semiconductors, Power Convertors, Cascade Control, Computer Aided Instruction, Electric Current Control, Fault Diagnosis, Performance Evaluation.
Keynote address:
Modern Control Methods for Improving Electrical Energy Efficiency in Computer Power Supplies
Abstract:
The concept of the "Fourth industrial revolution - Industry 4.0" was introduced in 2011 as a follow up of previous developments, but one that is uniquely anchored in the cyNear 10% of the worldwide electrical energy consumption comes from information and
communication technologies (ICT), which pushed numerous Government institutions to introduce specific requirements and laws for computer power. The power electronics industry responded actively with new products meeting the demands. Since most dc/dc power stages for ICT applications are currently optimized as modules by manufacturers, the R&D opportunity leans towards controller implementation. System-level control, protection, and monitoring are achieved with a dedicated Power Management Bus, briefly reviewed in this presentation. At low-level, the industry mostly uses conventional feedback control design methods in frequency domain (lead-lag, or PI-D) to meet steady-state or some dynamic performance. New dynamic
requirements for power supplies encourage a major leap forward with the use of State Space based design. This time-domain modern control is usually perceived as an advanced topic due to its inherent mathematical support. It can however be simplified for making it apt for low-cost analog or digital implementation, while it maintains an easier electrical energy efficiency optimization within a system analysis tool like MATLAB. Instead of the conventional loop tuning procedures, a formula calculates gains instantly. Another unique dynamic performance advantage is also proven for the multi-phase dc/dc converters with phase dropping, converters which are the benchmark in computer power. An in-depth presentation, rich in worked examples for either analog or digital implementation, opens this topic to any audience.ber-physical concept. As such, it relies on the concepts of information, digitization, digitalization, and networking as well as digital twins, semantic interoperability and all that these entail including placing value and costs of information at the forefront. As a consequence of industry moving into the cyber-physical space, the tightly linked nondestructive evaluation of materials and components had to adapt to these changes through a series of developments dubbed NDE 4.0. This work discusses the various development in NDE from testing to personnel training needed to adapt to the new era of testing whereby physical testing of a product is not sufficient. There is a need to test and evaluate over the lifespan of products as well as to develop new procedures and methods that can be adapted to custom products such as those produced by 3D printing. NDE becomes integrated into the production process, providing both feedback and feedforward loops to the industrial processes.
Dorin O. NEACŞU (IEEE M'95-SM'00) has received the MSc and PhD degrees in Electronics from the Technical University of Iasi,
Iasi, Romania, in 1988 and 1994, respectively, and a MSc degree in Engineering Management from Gordon Institute for Leadership, Tufts University, in 2005. Dorin has been involved with TAGCM-SUT Iasi, Romania, from 1988 to 1990, and with the faculty at Department of Electronics, Technical University of Iasi, Romania, between 1990 and 1999. Following 1999, he was involved with the U.S. industry as an engineer, consultant, product manager, and project manager, and with U.S. academic activities. Since 2012, Dorin is an Associate Professor with Technical University of Iasi and was a multi-year Visiting Associate Professor with Northeastern University, Boston, MA, USA.
Professor Dorin O. NEACŞU has organized 13 professional education seminars (tutorials) at IEEE conferences, has been awarded 4 US patents, and has provided a continuous stream of IEEE paper publications since 1992. He has published "Switching Power Converters - Medium and High Power", "Telecom Power Systems", "Automotive Power Systems", all books available at CRC Press/Taylor and Francis. He has received the 2015 "Constantin Budeanu" award of the Romanian Academy of Sciences, and the 2018 "Ad Astra" award from Romanian Researchers Association. Dorin is an Associate Editor of IEEE Transactions on Power Electronics, Associate Editor of IEEE IES Magazine, Reviewer for IEEE Transactions and Conferences, Member of IEEE committees and served as Secretary for Standards Technical Committee of PELS and Secretary of Power Electronics Technical Committee of IES.
Professor Dorin O. NEACŞU has organized 13 professional education seminars (tutorials) at IEEE conferences, has been awarded 4 US patents, and has provided a continuous stream of IEEE paper publications since 1992. He has published "Switching Power Converters - Medium and High Power", "Telecom Power Systems", "Automotive Power Systems", all books available at CRC Press/Taylor and Francis. He has received the 2015 "Constantin Budeanu" award of the Romanian Academy of Sciences, and the 2018 "Ad Astra" award from Romanian Researchers Association. Dorin is an Associate Editor of IEEE Transactions on Power Electronics, Associate Editor of IEEE IES Magazine, Reviewer for IEEE Transactions and Conferences, Member of IEEE committees and served as Secretary for Standards Technical Committee of PELS and Secretary of Power Electronics Technical Committee of IES.
