Accession Number : AD1013470


Title :   Dead Zone Oscillator Control for Communication-Free Synchronization of Paralleled, Three-Phase, Current-Controlled Inverters


Descriptive Note : Technical Report


Corporate Author : U.S. Naval Academy Annapolis


Personal Author(s) : Shabshab,Spencer C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1013470.pdf


Report Date : 11 May 2016


Pagination or Media Count : 25


Abstract : The prevalence of converter-interfaced power sources in the power grids of both civilian and military systems is increasing due to technological improvements in power conversion and changing requirements in system loads. The development of high-power pulsed loads on naval platforms, such as the Laser Weapon System (LaWS) and the electromagnetic railgun, calls for the ability to rapidly and drastically change the allocation of power in a system that contains many other loads. A new method of synchronizing parallel-connected converter-interfaced power sources, which involves controlling converters to emulate the dynamics of a nonlinear dead-zone oscillator, may provide an advantage. This method, termed Virtual Oscillator Control(VOC), was previously tested and validated for networks of single-phase, voltage-source power converters and supported in simulation fornetworks of three-phase, voltage-source inverters. The effectiveness of VOC in the control of three-phase grids was here validated through hardware experimentation. Additionally, VOC was extended to implementation with current-controlled inverters, which are very prevalent in power systems because of their enhanced safety and circuit-protection features. The hardware validation and performance evaluation of VOC applied to networks of parallel-connected, three-phase, current-controlled inverters is here detailed.


Descriptors :   converters , ENERGY CONVERSION , power supplies , INVERTER CIRCUITS , OSCILLATORS , SYNCHRONIZATION ELECTRONICS , voltage , ELECTRICAL IMPEDANCE , RENEWABLE ENERGY , ALTERNATING CURRENT , ELECTRICAL LOADS , grids


Distribution Statement : APPROVED FOR PUBLIC RELEASE