segunda-feira, 16 de fevereiro de 2015
Dynamic Power Flow Control for a Smart Micro-grid by a Power Electronic Transformer JALPA KAUSHIL SHAH FACULTY OF THE GRADUATE SCHOOL OF THE UNIVERSITY OF MINNESOTA
Title Dynamic power flow control for a smart micro-grid by a power electronic transformer
.Autor Shah, Jalpa Kaushil Data 2011-05 Type
Thesis or Dissertation
A novel strategy, for control of the power flow for a smart micro-grid is proposed. The utility grid power is dynamically controlled by a Power Electronic Transformer (PET). A 60 Hz, step-down transformer is generally used at the point of common coupling (PCC), to connect the micro-grid to the power system grid. Substitution of the conventional 60Hz transformer, by a PET, results in enhanced micro-grid power management system, during grid-connected operation. The smart micro-grid is a set of controllable loads and distributed energy resources (DER); both renewable and non-renewable; that supply demand of a group of customers. The proposed dynamic power limiter (also referred to as PET) is a high-frequency, isolated power-converter system, comprised of a highfrequency step-down transformer and three-phase to single-phase matrix converters. The matrix converters are modulated with a novel pulse width modulation (PWM) strategy for a bi-directional power flow control.
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