Installation of a 150 kW Medium Voltage AC/DC Testbed for Simulation and Modeling of Distributed Generation Shipboard Electrical Power Systems (DGSEPSs)
Abstract
This proposal requests funds to procure/install a one-of-a-kind, 150 kW medium-voltage AC/DC testbed that will be utilized in conjun"ction with existing hardware in the University of Texas at Arlington~s (UTA~s) Pulsed Power and Energy Laboratory (PPEL) to simulate and modeldistributed generation shipboard electrical power systems (DGSEPSs). The US Navy~s next generation DGSEPSs will rely upon" electrical generation from several interconnected sources that will include diesel and gas turbine driven generators, flywheels, an"d electrochemical batteries. Integration/control of both AC/DC sources within a single power system is not an easy task. AC/DC generation sources be interconnected on a medium-voltage DC (MVDC) bus at voltagesas high as 6 kVDC. Fossil-fuel driven generation is no"t practical alone for driving transient pulsed power loads, either mechanically or electrically. Electrochemical batteries/capacitor""s have been proposed to augment fossil-fuel generation to act as both a source and load. Since 2010, the UTAPPEL has been studying t""he performance, reliability, and aging of electrochemical cells when cycled at high rates at the material, cell, module, and even 10""00 VDC level. With ONR support,the PPEL has designed/installed three~1000 V electrochemical batteries and initiated efforts aimeda""t studying battery integration using hardware-in-the-loop (HIL). With the funds proposed here, the PPEL will procure a 150 kW dynamo"meter/generator pair to generate 480 VAC and a 480 VAC to 4160 VAC voltage transformer to emulate the Navy~s diesel and gas turbineengine/generator sets. A multi-pulse AC/DC rectifier will rectify the 4160 VAC to 6 kV DC for connection onto a 6 kV MVDC bus. A programmable DC/DC converter is already on hand that will interconnect the existing 1 kV batteries onto the 6 kV MVDC bus and an AC/DC converter will be procured so that the generator can be loaded by the 1 kVDC battery during periods ofinactivity. All of the sources and loads will be controlled using an OPAL-RT HIL platform already installed in the PPEL. A 1.0 MJ capacitive load within the PPE"L, will be utilized in conjunction with a 6 kV resistive load that is proposed for purchase here. The resulting modular, one-of-a-ki""nd MVDC architecture will enable the PPEL to assist ONR Codes 33/35 in identifying, understanding, and overcoming the challenges ass"ociated with integrating 1 kVDC hybrid energy storage modules (HESMs) into the 4160 VAC generation system so that both can be deployed in future electrical ships to supply complex continuous and pulsed AC/DC loads.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 29, 2017
- Source ID
- N000141712801
Entities
People
- David A. Wetz
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Arlington