FREEDM logo FREEDM Systems Center

Research  ::  Technical Papers

These technical papers are only accessible by our members. If you are already a member, please log in before attempting to view the files. If you are unsure whether or not your company is a FREEDM member, please check our industry partners page. If your company is a member and you have not already registered for our intranet, please visit the intranet sign-up page to set up your account. If your company is not a member and you are interested in FREEDM membership, please contact Seth Crossno for more information.

Advanced Storage

    Advances in High-Performance Rechargeable Lithium-Ion Batteries High energy density electrochemical capacitors Manganese Dioxide/Carbon Nanotube Sheet Electrodes for Use in Electrochemical Pseudocapacitors

Distributed Energy Storage Device

    Dynamic Modeling of Ultra-Capacitors
  1. Review of Energy Storage Systems

Distributed Grid Intelligence

    Model-checking BNDC properties in Cyber-physical systems The FREEDM Architecture of Fault Tolerant Network Routing through Software Overlays The Security Implication of Multiple Observers in a Distributed System

Fault Isolation Device

  1. ETO Thyristor based Solid-State Circuit Breaker and Fault Current Limiter for Power Distribution System
  2. Fault Isolation Device for Power Electronics based Distribution Systems

Flexible AC Transmission Systems

  1. Fault-Tolerant Transformerless Power Flow Controller Based-on ETO Light Converter
  2. Robust DC-link Regulation of Voltage-Sourced BTB HVDC Systems under Power System Disturbances
  3. The Hardware Development of FACTS Interaction Laboratory

Plug-in Hybrid Electric Vehicle

    A Novel Scheme for Optimally Combining Batteries and Ultracapacitors in a Hybrid Power Pack
  1. An Analysis of the Impact of Plug-In Hybrid Electric Vehicles on Power System Stability
  2. Design and Control of Grid-connected Converter in Bi-directional Battery Charger for Plug-in Hybrid Electric Vehicle Application
  3. Effect of Battery Capacity on the Performance of Plug-in Hybrid Electric Vehicles
  4. Evaluation of ZigBee Communication Platform for Controlling the Charging of PHEVs at a Municipal Parking Deck Inductively Coupled Power Transfer for Continuously Powered Electric Vehicles Intelligent Battery Management System for Plug-in Hybrid Electric Vehicles Optimum design of an EV charging station with DC bus and storage system
  5. Power Supply for an Electric Vehicle Charging System for a Large Parking Deck
  6. Supervisory Control Development of a Fuel Cell Plug-in Hybrid Vehicle

Post-Silicon Device

  1. 10 kV SiC MOSFET Based Boost Converter
  2. Characteristics of 10 kV SiC MOSFET and PIN Diode and Their Application Prospect in High Voltage High Frequency DC/DC Converter
  3. Characterization of Epitaxial Gate Oxides Used for GaN Passivation Design and investigation of frequency capability of 15kV 4H-SiC IGBT Design and Simulation Study of a 15kV 4H-SiC Diode Design of AlGaN/GaN Vertical HEMT Devices with Low On-State Resistance Development of 15-kV SiC IGBTs And Their Impact to Utility Dielectric and Interface Engineering of Gate Stacks on 4H-SiC GaN Impact Ionization Characterization for Generation 2 Power Devices Investigation of solid electrolyte interfacial layer development during continuous cycling
  4. Silicon Carbide Emitter Turn-Off Thyristor

Power Electronics

  1. A New Improved Projected Cross Point Control
  2. A Novel Wide Voltage Range Bi-directional Series Resonant Converter with Clamped Capacitor Voltage
  3. Adaptive External Ramp in Peak Current Mode Control for Higher Bandwidth for Wide Operation Range DC/DC Converters
  4. Assessment of Critical Issues for High Temperature, High Voltage Power Modules
  5. Control Reconfiguration of STATCOM for De-icer Application
  6. Controller Design Issues and Solutions for Buck Converters with Phase Shedding and AVP Functions
  7. Optimal Variable Switching Frequency Scheme for Reducing Switching Loss in Single Phase Inverters Based on Time-domain Ripple Analysis
  8. Optimized Digital Maximum Power Point Tracker Implementation for Satellites
  9. Power Sharing in a Double-Input Buck Converter Using Dead-Time Control
  10. Power Sharing in a Double-Input Buckboost Converter Using Offset Time Control
  11. STATCOM Operation with Instantaneous Phase-locked Loop under Single Line- Ground System Faults with Magnetic Saturation in Series Connected Transformers based 48-pulse Voltage-Source Converter
  12. Three-Level Active Neutral-Point-Clamped (ANPC) Converter with Fault Tolerant Ability

Power Management Integrated Circuits

  1. 9-bits 8MHz DPWM with AMI06 process and MOSIS fabrication
  2. A Boost DC-DC Converter Using the Differential Difference Amplifiers
  3. A Sampled Data Modeling for Double Edge Current Programmed Mode Control (DECPM) in High Frequency and Wide Range DC/DC Converters
  4. Design of a Transient Voltage Clamp (TVC) for 4 Switch Buck Boost (4SBB) Converter
  5. Monolithic DC Offset Self-Calibration Method for Adaptive On-time Control Buck Controller
  6. Three Level Buck Converter for RFPA Applications

Renewable Energy Systems

  1. A High-efficiency Circuit for Magnetostrictive-based Energy Harvester using Standard CMOS Technology
  2. A Novel Wide Input Range Photovoltaic Inverter with a Dual Mode DC/DC Converter
  3. PV System with Energy Storage Based on a Three-Port DC-DC Converter

Solid State Transformer

    A Modular, Interleaved AC-AC Flyback Topology for Solid State Transformer Ac-Ac Dual Active Bridge Converter in Solid State Transformer Design and Development of Gen-1 Silicon Based Solid State Transformer Energy-Based Control Design for a Solid State Transformer FREEDM Software Controller Architecture for a Solid State Transformer Generalized modeling and generalized capacitor voltage balancing of flying capacitor converters H-bridge Packaging of 6.5kV/25A IGBT Module High Frequency Transformer Design and Trade-off for Solid State Transformer
  1. Impact of High-Voltage SiC Power Devices on Medium-Voltage and High Power Converters
  2. Modular High-Voltage High-Frequency Bidirectional DC-DC Converters for 10 kVA Solid State Transformer

System Theory, Modeling and Control

    An Average Model of Solid State Transformer for Dynamic System Simulation
  1. Average and Phasor Models of Single Phase PV Generators for Analysis and Simulation of Large Power Distribution Systems
  2. Computational Analysis of Power Grid Resilience
  3. Concept of FREEDM loop line fault protection Concept of FREEDM loop line fault protection Implementation of Microgrid Protection Using RTDS
  4. Including Voltage Measurements in Branch Current State Estimation for Distribution Systems
  5. Notional FREEDM System: Basic Features Simulink Block-set for Modeling Distribution Systems with Solid State Transformer
  6. Small Signal Stability Analysis of Doubly Fed Induction Generator for Wind Power Production
  7. Test Bed Evaluation of Future Power Distribution Systems with Renewable Resources for the FREEDM System

The 2010 FREEDM Annual Conference and NSF Site Visit will be held May 18-20 at Florida State University in Tallahassee, Florida!