1. Purpose
Discuss and identify areas of collaboration on the NGIPS MVDC system architecture
Understanding areas of risk in the MVDC architecture
Perform risk mitigation utilizing modeling, simulation, validation and hardware in the loop testing

2. Key Research Issues for MVDC
DC Bus Regulation
Fault protection/Fault interruption
System control
System stability
Energy Storage
System isolation & grounding
Load-centric power management techniques
Affordability
Thermal Management

3. ESRDC research in support of MVDC
FSU
Notional MVDC RT Simulation model development
Location of ground faults in ungrounded DC system
Electro thermal real-time simulation
Insulation coordination in converter dominated systems
MIT
Parametric sensitivity and uncertainty analysis
Thermal Loads for real-time simulation
The Role of the Combat Power Monitor in Zonal Electrical Distribution
MSU
MVDC Hardware Testbed ( with USC)
Develop methodology for optimal power management based on steady state power flow models of DC systems and controllers
Develop a method to implement simultaneous inter-area decoupling and local area oscillation damping on MVDC systems
Develop DC system fault detection and protection schemes
Cable testing with DC waveforms

4. ESRDC research in support of MVDC
USNA/PU
Update Naval Combat Survivability Testbed from AC distribution system architecture to a medium voltage dc architecture
Conduct a stability analysis and explore issues related to parallel dc sources.
UT-Austin
Develop definition of a practical MVDC system, DC Fault Protection, Reconfiguration, Load Sharing and Signal Analysis,
Switching surges and insulation coordination
Thermal management modeling and simulation
USC
MVDC PEBB based hardware test bed ( with MSU)
MVDC VTB Pro based ship system model

5. MVDC, Red and Black Demos
Red Demo
Demonstrate and Test a Full Scale demonstration of an MVDC system Ending in 2010
5kVDC Distribution derived from 4,160VAC components
Conventional energy management
Red Demo plan approved, MVAC to MVDC transformation at the Land Based Test Site in Philadelphia, NAVSEA/NSWC, ending 3QFY09.
Red Demo, TRL6, ending 3QFY10 (timing based on the MVAC demo schedule).
Specifications, Standards, Interface Requirements, Test Infrastructure and all other documentation, ending 4QFY10.
Black Demo
Demonstrate and Test a Full Scale demonstration of a 10kVDC MVDC system Ending in 2015
Based on SiC, high frequency transformers, and compact power technologies.
Dynamic power management

6. Purple Team Major Shipbuilders, NSWC, NAVSEA, ESRDC, and ONR
Determine tool status and capability for ship system design
Perform baseline round robin simulations to establish metrics
Initiate a common Navy wide electrical system design environment
Initiate a Navy Model library

7. Purple/ESRDC
Provide baseline simulations for MVAC, MVDC, and HFAC systems
Create translation, emulation, co-simulation, and etc tools as needed to create a common Navy design environment
Help create the optimum model library – what is the form, fit, and functions of future models.
Create models for purple team studies

8. Major Issues No tool consistency -- vendors, shipbuilders, Navy
IP prevents model reuse and VV&A
No system level design tools
No physics in high level simulations