BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20260308T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20261101T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260926T014254Z UID:B06B73FA-80BF-4F43-98F8-C1FA7F1C27BC DTSTART;TZID=America/Los_Angeles:20261022T170000 DTEND;TZID=America/Los_Angeles:20261022T180000 DESCRIPTION:[]\n\nThe growing use of converter-interfaced generation\, ener gy storage\, and large electric loads is creating new challenges for power -system stability\, resilience\, and expansion. Although solid-state trans formers (SSTs) and medium-voltage DC technologies have advanced substantia lly\, most research continues to treat them as individual devices rather t han coordinated building blocks of future grid architecture.\n\nThis lectu re traces a control-centered progression from grid-forming SSTs\, through grid-forming control of multi-terminal MVDC networks\, to SST-enabled mult i-terminal MVDC systems. It first introduces Dual-Measurement Frequency Dr oop (DMFD)\, which enables grid-forming operation at both AC terminals of an SST. This allows multiple SST-connected systems to establish interconne cted microgrids during upstream outages\, regulate voltage and frequency\, coordinate photovoltaic and battery resources\, and maintain connected re newable generation without high-speed communications.\n\nThe same control principle is then extended to multi-terminal MVDC networks to coordinate g rid-forming behavior across AC and DC terminals\, improve disturbance shar ing\, and reduce dependence on fixed master-slave roles. The lecture concl udes by introducing an emerging architecture in which the internal convert ers and DC buses of SSTs form meshed MVDC interconnections without additio nal converter stations.\n\nTogether\, these developments could reposition SSTs from advanced transformer replacements to strategic grid infrastructu re\, enabling multi-path power delivery\, graceful degradation and recover y\, and a phased transition from legacy AC systems to resilient hybrid AC/ DC networks. Data centers and other critical large loads provide a compell ing application\, particularly when strengthening the surrounding sub-tran smission system is as important as protecting the load itself.\n\nDr. Hish am Mahmood is a Senior Research Engineer at Pacific Northwest National Lab oratory\, where he leads research on medium- and high-voltage DC grid arch itectures\, solid-state transformers\, and the control of converter-domina ted power systems. His research has progressed from autonomous power manag ement and coordination of islanded microgrids to grid-forming SSTs\, SST-e nabled hybrid AC/DC systems\, and multi-terminal MVDC and HVDC networks. H is current work includes advanced control and architecture development for MVDC grids\, offshore-wind integration through multi-terminal HVDC system s\, and system-level modeling of power-electronic interfaces.\n\nBefore jo ining PNNL\, Dr. Mahmood was an Assistant Professor at Florida Polytechnic University and held research and engineering positions at Western Univers ity\, the University of Exeter\, and Hit Power Ltd. He received the Ph.D. degree in electrical engineering from Western University and the M.Sc. deg ree in control engineering from Lakehead University. Over more than 15 yea rs across national laboratories\, academia\, and industry\, he has led and contributed to multiple U.S. Department of Energy-funded research project s and published extensively on microgrid power management\, distributed en ergy storage\, and power-electronic converter control. He is a Senior Memb er of IEEE and has been listed among the world’s top 2% scientists in St anford University’s science-wide citation database.\n\nVirtual: https:// events.vtools.ieee.org/m/579978 LOCATION:Virtual: https://events.vtools.ieee.org/m/579978 ORGANIZER:srazanaq@uwo.ca SEQUENCE:7 SUMMARY:IEEE PES Lecture: From Grid-Forming SSTs to Multi-Terminal MVDC Net works: Control Foundations for SST-Enabled Hybrid AC/DC Power Systems URL;VALUE=URI:https://events.vtools.ieee.org/m/579978 X-ALT-DESC:Description: <br /><p><br><img style="display: block\; margin-le ft: auto\; margin-right: auto\;" src="https://events.vtools.ieee.org/vtool s_ui/media/display/06e0bce6-c310-46f1-b63a-22d828ed4fda" alt="" width="756 " height="86"></p>\n<div>\n<p class="MsoNormal">The growing use of convert er-interfaced generation\, energy storage\, and large electric loads is cr eating new challenges for power-system stability\, resilience\, and expans ion. Although solid-state transformers (SSTs) and medium-voltage DC techno logies have advanced substantially\, most research continues to treat them as individual devices rather than coordinated building blocks of future g rid architecture.</p>\n<p class="MsoNormal">This lecture traces a control- centered progression from grid-forming SSTs\, through grid-forming control of multi-terminal MVDC networks\, to SST-enabled multi-terminal MVDC syst ems. It first introduces Dual-Measurement Frequency Droop (DMFD)\, which e nables grid-forming operation at both AC terminals of an SST. This allows multiple SST-connected systems to establish interconnected microgrids duri ng upstream outages\, regulate voltage and frequency\, coordinate photovol taic and battery resources\, and maintain connected renewable generation w ithout high-speed communications.</p>\n<p class="MsoNormal">The same contr ol principle is then extended to multi-terminal MVDC networks to coordinat e grid-forming behavior across AC and DC terminals\, improve disturbance s haring\, and reduce dependence on fixed master-slave roles. The lecture co ncludes by introducing an emerging architecture in which the internal conv erters and DC buses of SSTs form meshed MVDC interconnections without addi tional converter stations.</p>\n<p class="MsoNormal">Together\, these deve lopments could reposition SSTs from advanced transformer replacements to s trategic grid infrastructure\, enabling multi-path power delivery\, gracef ul degradation and recovery\, and a phased transition from legacy AC syste ms to resilient hybrid AC/DC networks. Data centers and other critical lar ge loads provide a compelling application\, particularly when strengthenin g the surrounding sub-transmission system is as important as protecting th e load itself.</p>\n<p>&nbsp\;</p>\n</div>\n<p class="MsoNormal" style="ms o-margin-top-alt: auto\; margin-bottom: 8.0pt\; line-height: 115%\;"><img src="https://events.vtools.ieee.org/vtools_ui/media/display/7d2853c6-ef90- 4bc8-99c8-333535f4c921" width="225" height="281"></p>\n<p class="MsoNormal " style="mso-margin-top-alt: auto\; margin-bottom: 8.0pt\; line-height: 11 5%\;">&nbsp\;</p>\n<p class="MsoNormal"><strong>Dr. Hisham Mahmood</strong > is a Senior Research Engineer at Pacific Northwest National Laboratory\, where he leads research on medium- and high-voltage DC grid architectures \, solid-state transformers\, and the control of converter-dominated power systems. His research has progressed from autonomous power management and coordination of islanded microgrids to grid-forming SSTs\, SST-enabled hy brid AC/DC systems\, and multi-terminal MVDC and HVDC networks. His curren t work includes advanced control and architecture development for MVDC gri ds\, offshore-wind integration through multi-terminal HVDC systems\, and s ystem-level modeling of power-electronic interfaces.</p>\n<p class="MsoNor mal">Before joining PNNL\, Dr. Mahmood was an Assistant Professor at Flori da Polytechnic University and held research and engineering positions at W estern University\, the University of Exeter\, and Hit Power Ltd. He recei ved the Ph.D. degree in electrical engineering from Western University and the M.Sc. degree in control engineering from Lakehead University. Over mo re than 15 years across national laboratories\, academia\, and industry\, he has led and contributed to multiple U.S. Department of Energy-funded re search projects and published extensively on microgrid power management\, distributed energy storage\, and power-electronic converter control. He is a Senior Member of IEEE and has been listed among the world&rsquo\;s top 2% scientists in Stanford University&rsquo\;s science-wide citation databa se.</p> END:VEVENT END:VCALENDAR