Design a Power Electronic Transformer for Micro Grid Applications
BibTeX
@MISC{C_designa,
author = {Ramki P Muniraj. C},
title = {Design a Power Electronic Transformer for Micro Grid Applications},
year = {}
}
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Abstract
ABSTRACT-This paper suggests a novel strategy, for control of the power flow for a smart micro-grid. The utility grid power is dynamically controlled by a Power Electronic Transformer (PET). A 50Hz, 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 50Hz 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 high- frequency 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. The output of the matrix converter generates a high frequency (few kHz) pulsating single phase AC at the primary and secondary of the transformer, which are phase shifted for active power control. The PET also allows voltage regulation by control of reactive power. The entire system; represented as two, three-phase AC systems with an intermediate
Keyphrases
power electronic transformer micro grid application smart micro-grid matrix converter supply demand single-phase matrix converter utility grid power abstract-this paper power system grid novel pulse width modulation novel strategy active power control power flow single phase ac step-down transformer high frequency dynamic power limiter enhanced micro-grid power management system grid-connected operation three-phase ac system controllable load common coupling power-converter system reactive power distributed energy resource entire system high frequency step-down transformer voltage regulation bi-directional power flow control
