BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:US/Eastern BEGIN:DAYLIGHT DTSTART:20210314T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20201101T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20220123T220827Z UID:4C744E6A-A923-4DF2-A8B0-78BDDA1B321A DTSTART;TZID=US/Eastern:20210224T190000 DTEND;TZID=US/Eastern:20210224T200000 DESCRIPTION:Power Electronics are an enabling technology for a wide range o f commercial and industrial applications. Grid connected inverters are a c entral component of renewable energy sources (PV-solar\, wind)\, battery s torage systems\, as well as micro-grids. To optimally integrate these rene wable resources\, it is necessary to rethink the electric power grid itsel f by adjusting the centralized generation model and progressively transiti oning to a distributed generation (DG) based power grid architecture throu gh power electronic inverters and their control.\n\nOur research focuses o n developing novel control and observation strategies to improve the stead y state error and dynamic performance of grid connected inverter systems. At the lowest level\, existing control strategies utilize a cascaded appro ach\, based on linear system solutions (PI-control). At a higher level\, D roop control\, a widely adopted method to integrate variable renewable sou rces\, is a decentralized and communication-less control scheme\, contribu ting to the overall frequency (and voltage) control by emulating virtual i nertia (and a virtual impedance). However\, the expansion of renewable ene rgy inevitably drops the mechanical inertia of the whole power system beca use these generation resources cannot store kinetic energy as they do not have a rotating mass. Hence\, a mismatch between generation and consumptio n cannot always be mechanically compensated for\, which can cause large fr equency swings in the grid. Herein lies an additional problem for control system researchers to solve as the grid transitions to more inverter based resources.\n\nThis talk will briefly review existing control schemes for grid connected inverters and will highlight alternate approaches at variou s control system levels. Our research utilizes nonlinear control schemes t o meet the over-all control objective in the presence of various forms of uncertainties and un-modeled effects present in grid connected systems. De tails will be shared about our various validation environments such as sim ulation\, HIL\, and a residential scale micro-grid under development at th e UofL-Conn Center.\n\nThis presentation will review an approach for devel oping detailed models of utility-scale solar PV and BESS that are validate d using data retrieved from an operational 10 MW PV farm and 1 MW/2 MWh BE SS. Additionally\, a novel approach for estimating the equivalent circuit parameters for utility-scale BESS using equipment typically available at t he installation site will be presented. Finally\, the detailed technical b enefits of a proposed configuration for integrating BESS into existing PV power plants will also be reviewed.\n\nSpeaker(s): Dr. Michael L. McIntyre \, P.E. Associate Professor\, ECE Department\, \n\nVirtual: https://event s.vtools.ieee.org/m/260515 LOCATION:Virtual: https://events.vtools.ieee.org/m/260515 ORGANIZER:adozier@awdozier.com SEQUENCE:2 SUMMARY:Advanced Control Systems for Grid Connected Inverters URL;VALUE=URI:https://events.vtools.ieee.org/m/260515 X-ALT-DESC:Description: <br /><p>Power Electronics are an enabling technolo gy for a wide range of commercial and industrial applications.&nbsp\; Grid connected inverters are a central component of renewable energy sources ( PV-solar\, wind)\, battery storage systems\, as well as micro-grids. To op timally integrate these renewable resources\, it is necessary to rethink t he electric power grid itself by adjusting the centralized generation mode l and progressively transitioning to a distributed generation (DG) based p ower grid architecture through power electronic inverters and their contro l.</p>\n<p>Our research focuses on developing novel control and observatio n strategies to improve the steady state error and dynamic performance of grid connected inverter systems.&nbsp\; At the lowest level\, existing con trol strategies utilize a cascaded approach\, based on linear system solut ions (PI-control).&nbsp\; At a higher level\, Droop control\, a widely ado pted method to integrate variable renewable sources\, is a decentralized a nd communication-less control scheme\, contributing to the overall frequen cy (and voltage) control by emulating virtual inertia (and a virtual imped ance).&nbsp\; However\, the expansion of renewable energy inevitably drops the mechanical inertia of the whole power system because these generation resources cannot store kinetic energy as they do not have a rotating mass . Hence\, a mismatch between generation and consumption cannot always be m echanically compensated for\, which can cause large frequency swings in th e grid.&nbsp\; Herein lies an additional problem for control system resear chers to solve as the grid transitions to more inverter based resources.&n bsp\;&nbsp\;</p>\n<p>This talk will briefly review existing control scheme s for grid connected inverters and will highlight alternate approaches at various control system levels.&nbsp\; Our research utilizes nonlinear cont rol schemes to meet the over-all control objective in the presence of vari ous forms of uncertainties and un-modeled effects present in grid connecte d systems.&nbsp\; Details will be shared about our various validation envi ronments such as simulation\, HIL\, and a residential scale micro-grid und er development at the UofL-Conn Center.</p>\n<p>This presentation will rev iew an approach for developing detailed models of utility-scale solar PV a nd BESS that are validated using data retrieved from an operational 10 MW PV farm and 1 MW/2 MWh BESS. &nbsp\;Additionally\, a novel approach for es timating the equivalent circuit parameters for utility-scale BESS using eq uipment typically available at the installation site will be presented. Fi nally\, the detailed technical benefits of a proposed configuration for in tegrating BESS into existing PV power plants will also be reviewed.</p> END:VEVENT END:VCALENDAR