REVIEW OF PV INVERTER TECHNOLOGIES FOR PRACTICAL IMPLEMENTATION

REVIEW OF PV INVERTER TECHNOLOGIES FOR PRACTICAL
IMPLEMENTATION
Kuo-Lung Chai, Yue-Chun Lin, Jing-Fong Hsu, and Ying-Yu Tzou
Power Electronics IC Design and DSP Control Lab.,
Dept. of Electrical and Control Engineering, National Chiao Tung Univ., Hsinchu, Taiwan

RALE ENGINEERING VIDEO DEMO

TRANSFORMER DESIGN SOFTWARE VIDEO DEMO
RATIBUR HADZIMANOVIC .DIPL. ING.

RALE ENGINEERING

RALE Distribution and Power Transformer Design Software and Inductor Design Software .


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A Novel Driving and Protection Circuit for REVERSE BLOCKING IGBT USING IN MATRIX CONVERTER

A Novel Driving and Protection Circuit for
Reverse-Blocking IGBT Used in Matrix Converter
Daning Zhou, Kai Sun, Student Member, IEEE, Zhichao Liu, Lipei Huang,
Kouki Matsuse, Fellow, IEEE, and Kiyoaki Sasagawa

V. CONCLUSION
This paper has discussed a novel drive and protection circuit
designed for RB-IGBT.
1) A novel drive circuit was proposed to solve the conflict
between restricting di/dt of collector current in
turn-on transitions, dv/dt of collector–emitter voltage in
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 43, NO. 1, JANUARY/FEBRUARY 2007
Fig. 20. Performance of the matrix converter in 50-Hz output frequency and
4.5-Nm load condition. (a) Input phase voltage νa, phase current ia, and its fast
Fourier transform (FFT). (b) Output line voltage νAC, output current iA, and
its FFT.
turn-off transitions, and reducing turn-on/off intervals
that are existing in conventional drive circuits. Experimental
results show that the proposed circuit can work
as the hope.
2) A novel protection circuit was designed. The Ic sensing
unit of this circuit is specifically designed for an RBIGBT.
Experimental results show that the short-circuit
FUL condition can be handled properly. The problem is
that the value of the large resistance used to import Vce
of RB-IGBT is difficult to determine. It should be high
enough to reduce its power losses. However, it should be
controlled to reduce the response time in case a shortcircuit
fault occurs.
3) A three-phase-to-three-phase matrix converter was set up.
The proposed collector current sensing method is found
useful to produce the output current direction signals,
which are necessary to implement the current-sign-based
four-step commutation method.
The future work includes the following.
1) Simplify the proposed drive circuit to reduce the cost.
2) Investigate the effects of the variations of component
parameters on the performance of the proposed drive and
protection circuit.
ACKNOWLEDGMENT
The authors would like to thank Dr. H. Shigekane,
Dr. S. Igarashi of Fuji Electric Device Technology Company,
Ltd., and Y. Abe, and M. Takei of Fuji Electric Advanced
Technology Company, Ltd. for their kind support of this project.

DC-AC CONVERTER FOR STANDALONE POWER SYSTEM

ABSTRACT
Abstract of dissertation presented at Universidade Federal do Ceará as partial of
fulfillment of the requirements for the Master degree in Electrical Engineering.
DC-AC CONVERTER FOR STANDALONE POWER SYSTEM
The study and development of new topologies or combinations of these in order to
apply for autonomous systems of electric power supply are the main drivers of this work. The
project consists of the combination of two converters, one high-gain step-up converter based
on the three states switching cell whose role is to raise the battery voltage to a value of
400Vcc, thus forming a DC bus, and a single-phase inverter bridge-type with a LC filter,
using the bipolar modulation type to obtain sinusoidal voltage similar to the power grid. The
control of the high-gain converter is performed through a loop of current and voltage, both
analog, but some part of the voltage loop is performed internally in a dsPIC, and inverter
control is largely accomplished through this dsPIC (Digital modulator and controller), using
the principles of discrete control. This system is capable of converting from 48V DC batteries
in 220Vac and 60 Hz, with performance equal to or greater than 85% with a wide range of
loading. Each stage has its theoretical study developed, and the introduction of a methodology
for obtaining a reduced model of the high gain converter, and at the end, after the
specifications and sizes are shown the experimental results of the prototype developed. The
system was tested in various situations that can be found in everyday life, like starting a nonlinear load, for example.
Engo .LUIZ DANIEL S. BEZERRA
CONVERSOR DE ALTO GANHO ASSOCIADO A UM INVERSOR
PARA APLICAÇÃO EM SISTEMA AUTÔNOMO DE ENERGIA
ELÉTRICA
Dissertação submetida à Universidade Federal
do Ceará como parte dos requisitos para
obtenção do grau de Mestre em Engenharia
Elétrica.
Orientador: Prof. Dr. René Pastor Torrico Bascopé.
Fortaleza Julho 2009