Design, Development and Control of >13kV Silicon-Carbide MOSFET based Solid State Transformer(SST) Authors:Wang, Gangyao North Carolina State University

Design, Development and Control of >13 kV Silicon-Carbide MOSFET based Solid
State Transformer (SST) by Gangyao Wang
A dissertation submitted to the Graduate Faculty of North Carolina State University
in partial fulfillment of the requirements for the Degree of Doctor of Philosophy
Electrical Engineering
Raleigh, North Carolina
2013 
ABSTRACT

WANG, GANGYAO. Design, Development and Control of >13 kV Silicon-Carbide MOSFET based Solid State Transformer (SST). (Under the direction of Dr. Alex Huang.)

Within the advent of the smart grid system, the solid state transformer (SST) will replace the traditional 60 Hz transformer formed by silicon steel core and copper windings and provides the interface between the high distribution voltage and low utility voltage. Other than the smaller size and less weight, SST also brings many more functionalities including voltage regulation, reactive power compensation, power management and renewable energy integration. The motivation of this research is to design a solid state transformer based on the wide band-gap Silicon Carbide (SiC) power MOSFETs and compare it with the silicon IGBT based SST. With wider band-gap and higher critical electrical field, the high voltage SiC power device has advantages over silicon power device for both conduction and switching. An extensive study and characterization of the SiC MOSFET was first carried out. It has been found that the MOSFET parasitic capacitors store significant amount of energy and the MOSFET turn on loss is high but turn off loss is virtually zero with small enough turn on gate resistor. A method for estimating the MOSFET parasitic capacitances has been proposed and explained in detail. A PLECS loss simulation model has been developed for the >13 kV SiC MOSFET which has been verified through a boost converter with the SiC MOSFET switches under 40 kHz for both soft switching and hard switching conditions separately.
WEBSITE ORIGINAL
http://repository.lib.ncsu.edu/ir/handle/1840.16/9163
LINK DIRECT
http://repository.lib.ncsu.edu/ir/bitstream/1840.16/9163/1/etd.pdf
LINK ALTERNATIVO
https://copy.com/daXOYRg2bHliBDCU

Smart Home Power Management System using Wireles

Smart Home Power Management System using Wireles

The purpose of the Smart Power Management System(SPMS) is everything necessary to maintain complete comfort in a residential environment, energy and economic costs saving through efficient power measurement and distribution.
Existing Korea energy policies have focused stable and economic power supply. Therefore industry comes up with a social develop through power infra. However it caused the indiscriminate power use. The saving of energy is all-important to our country, which lacks petroleum resources. Also complex and population growth have required the more energy demand because of industrial developments. Our domestic marketing is yet to apply the passive system, self-produced distribution of energy is maintaining ineffectually. In other words, recently to reduce the energy consumption it depends on the self-devices performance and keeps the passive energy management(insulation use etc). In overseas market is developing the active system. In order to apply the active system that needs the intelligent electronics control, smart context-aware monitoring, renewable energy technology of smart grid connection, cloud engine technology based on home network, air conditioning and heating control via environment integration management, remote control technology. To achieve the effective home power management system that requires a lot of tech. The power management system based on home network can contribute the energy life time via efficient energy distribution such as intelligent home management. Through the application of study that prospect the CO2 and energy cost reduction and make comfort residential environment.

Development of 3kW Smart Home Energy Server System Minjae Kim, Ahjin Jung, Daeki Yang, Seokyong Hong, Sewan Choi, Junseok Cho* Seoul National University of Science and Technology,

ABSTRACT
In this paper, the emergency power function with high efficiency, high reliability
3kw power, we propose a smart home energy server systems. When the proposed
Systems are Li-Ion batteries charge and discharge bi-directional converter for solar power
Consists of a one-way converter, two-way grid-connected inverter, presenting the operation mode of the proposed system and of the  prototype power 3kW Test validity was verified through.
LINK
http://pefcl.snut.ac.kr/upload/study04/92ec40dd921c550b0fbdee5ced93f545.pdf

Parallel Operation of Inverters with Seamless transfer for Energy Storage System Jung,AhJin

Parallel Operation of Inverters with Seamless transfer
for Energy Storage System

Jung,AhJin
(SupervisorChoi,SeWan)
Dept.ofControlandInstrumentationEng.
Graduate School Seoul National University of
ScienceandTechnology


Recently,integrating are new able energy source,such as solar energy or
wind power, to distributed generation microgrid is widely developed
nowadays.The cost and efficiency of the system may be taking into
accountas an important consideration.A large powersystem consists of
several parallel inverters which work redundantly,in order to keep the
reliability of the system. In addition, several same capacity parallel
inverters may be operated as modular inverters,that may have lower
operation cost.In modular inverter operation,the load sharing between
inverters must be considered. Furthermore, the transition between
grid-connected and stand-alone mode may causing bad influence to the
critical load.
In this paper,a master-slave control algorithm with seamless transfer
during mode transition of modular parallel inverter as PCS for ESS is
proposed.

FOTOGRAFIAS INAUGURAÇÃO SHOW ROOM EQUIPAMENTOS SMS-LEGRAND-06-11-2014 SAO PAULO BRASIL

LINK ALBUM SHOW ROOM SMS LEGRAND
https://plus.google.com/photos/111424134529259305519/albums/6078754595834403345


PARABENS AO EMPRESA SMS LEGRAND PELA GRANDE INAUGURAÇÃO DE SEU SHOW ROOM DE EQUIPAMENTOS CONDICIONADORES DE ENERGIA ,ESTABILIZADORES,UPS,QUADROS DE DISTRIBUIÇÃO ELETRICOS,INFRAESTRUTURA DE TI,FOI UMA GRANDE ALEGRIA VISITAR APOS MUITO ANOS,EU TIVE A GRANDE SATISFAÇÃO DE SER PARTE DO GRUPO DE ENGENHARIA DE DESENVOLVIMENTO E PESQUISA NO PERIODO DE (1998-2005),TAMBEM VERIFIQUE QUE O PRODUTO SINUS DOBLE LP NO QUAL TIVE A HONRA DE DESENVOLVER JUNTO COM MEU EQUIPE DE ENGENHARIA AINDA ESTA EM LINHA DE PRODUÇÃO,DESEJO MUITOS EXITOS.