Next-Generation Power Electronics

1
Next-Generation Power Electronics Investigator
Sudip K. Mazumder, Electrical and Computer
Engineering Prime Grant Support NSF, DOE (SECA
and II), PNNL, CEC, NASA, Ceramatec, Airforce
(award pending), TI, Altera
Problem Statement and Motivation

• To achieve reliable interactive
  power-electronics networks
• To design and develop power-management
  electronics for residential and vehicular
  applications of renewable/alternate energy
  sources (e.g., fuel and photovoltaic cells)
• To achieve higher power density and realize
  systems on chip

Key Achievements and Future Goals
Technical Approach

• Stability and Stabilization of Power-Electronics
  Networks
• a) Global stability analysis of stochastic and
  functional hybrid system
• b) Stabilization using wireless networked control
• Optimal Fuel Cell based Stationary and Vehicular
  Energy Systems
• a) Resolving interactions among energy source
  (such as fuel cells),
• power electronics, and balance of plant.
• b) Fuel-cell power-electronics inverter design
  that simultaneously meet
• criteria of cost, durability, and energy
  efficiency
• Robust and efficient power devices and smart
  power ASIC
• a) High-speed, EMI immune, wide-bandgap power
  devices
• b) Integration of low- and high-voltage
  electronics on the same chip

• First, wireless distributed control dc/dc and
  multiphase converters and three-phase induction
  motor control
• First, zero-ripple, multilevel, energy-efficient
  fuel cell inverter
• First, photonically-triggered power transistor
  design for power electronics
• First, nonlinear VRM controller for
  next-generation Pentium processors
• Comprehensive solid-oxide-fuel-cell (SOFC)
  spatio-temporal system model

2
MURI Analysis and design of ultrawide-band and
high-power microwave pulse interactions with
electronic circuits and systems Investigators
P.L.E. Uslenghi (P.I.), S. Dutt, D. Erricolo,
H-.Y. D. Yang, ECE in collaboration with Clemson
University, Houston University, Ohio State
University, University of Illinois at
Urbana-Champaign, University of Michigan Prime
Grant Support AFOSR
Problem Statement and Motivation
High Power EM fields

• Understand and predict the effects of the
  new electromagnetic threat
  represented
• by high power microwave (HPM) and ultrawide
  band (UWB) pulses on digital electronic
  systems found inside fixed or moving platforms.
• Develop recommendations for performing field
  tests/measurements

External EM Source (Impulse Radiating Antenna)
Illuminated target
Key Achievements and Future Goals
Technical Approach

• Apply electromagnetic topology to predict the
  effects of HPM/UWB aggressor signals
• Apply recently developed fast and accurate
  computer simulation tools.
• Further extend the capabilities of the computer
  simulation tools to obtain a better understanding
  of the overall problem.

• Fast computer codes are under development at UH,
  UIUC, UM and OSU.
• Topology studies are underway at CU.
• Analysis of devices and of processor faults
  are being conducted at CU and UIC.
• Validation tests for codes are being developed at
  CU, OSU, and UIC.

3
Energy-Efficient Design for Wireless
Networks Investigator Yingwei Yao, Electrical
and Computer Engineering Prime Grant Support None
Problem Statement and Motivation

• High data rate and bursty nature of data traffic
  in future wireless networks
• Limited resources (energy budgets and processing
  capabilities) of many mobile devices
• Harsh wireless communication channels subject to
  fading, shadowing, and interference
• Novel protocols are needed to support bursty,
  high data rate traffic that are both
  energy-efficient and robust against various
  channel impairments

Key Achievements and Future Goals
Technical Approach

• We have developed an energy efficient scheduling
  scheme. Utilizing channel information, it
  achieves over 85 energy savings compared with
  traditional TDMA.
• We have investigated the energy efficiency of
  various user cooperative relay transmission
  protocols and developed optimal resource
  allocation schemes.
• We have developed an adaptive transmission
  scheme for OFDM systems, which are robust against
  channel estimation errors.
• We will develop novel protocols for wireless
  video communication systems and wireless sensor
  networks.

• A cross-layer design approach to exploit the
  inter-dependencies among different layers of the
  protocol stack.
• An energy efficiency perspective to evaluate the
  energy consumption implications of various design
  options and to develop communication protocols
  suitable for mobile devices operating on tiny
  batteries.
• An optimization framework to develop resource
  allocation schemes, which achieve the optimal
  system throughput versus transmission cost
  tradeoff.