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In this paper, the normally-on type bidirectional switch, in which is comprised of normally-on and normally-off switching devices is proposed for one of a protection method of the Matrix Converter (MC). A diode clamp circuit or auxiliary protection circuits have to keep inductive load current loop in a MC utilized a bidirectional switch when the MC becomes gate block situation under abnormal conditions...
This paper compares four different commutation strategies for a new monolithic dual-gate bidirectional IGBT (BD-IGBT) in matrix converters. A new variable-timing four-step commutation and an one-step commutation control strategies are proposed and compared with the conventional and the two-level four-step commutation methods reported previously. Operation modes and power losses of the BD-IGBT using...
This paper deals with comparison of a novel supply system consisting of a single leg matrix converter with a single leg voltage source inverter fed the single phase induction machine. Single leg matrix converter operates without DC-interlink, thus there is no need to use bulky capacitors. Comparison of the two converters is made by simulation under motoric load.
The paper deals with analysis and modelling of a new type of single-phase supplied AC/AC converter with two phase outputs. It consists of single-leg half-bridge matrix converter loaded by resistive-inductive load in series connection. There are two problems solved in the paper: a) creating of second output phase shifted by 90 degrees against original one, and b) providing of frequency control of both...
In this paper, the novel normally-on type bidirectional switch, in which is comprised of SiC-JFET, SiC-SBD, and Si-IGBT is proposed for one of a protection method of the Matrix Converter (MC). When the MC becomes gate block situation, a diode clamp circuit or auxiliary circuits keeps inductive load current loop in a conventional MC utilized a bidirectional switch. We focus that the normally-on type...
The research work presented in this paper is focused on the modelling of matrix converter systems, targeting field programmable gate arrays (FPGA) for the rapid prototyping of the associated digital electronic controllers. The novel approach is based on a high level description language, Handel-C, used within a modelling environment created by Celoxica Ltd., called DK5. The matrix converter system...
This paper seeks a simple, cost effective and compact gate drive circuit for bi-directional switch of matrix converter. Principals of IGBT commutation and bi-directional switch commutation in matrix converters are reviewed. Three simple IGBT gate drive circuits are presented and simulated in PSpice and simulation results are approved by experiments in the end of this paper. Paper concludes with comparative...
AC-AC converters have wide applications in AC motor drives and marine power supplies. Modern direct AC-AC converters are based on the new topology of matrix converters. Despite excellent features, matrix converters suffer from the problems associated with bidirectional switch implementation. In this paper, a new direct AC-AC converter is presented. The proposed system has most advantages of modern...
Matrix-converter is three phase AC to AC direct converter which is absence of dc-link capacitors for energy storage by using bi-directional switches. Like a conventional inverter, matrix-converter can control input waveform and power factor and can revive the electric power of load. Therefore, matrix-converter is superior to conventional pulse width modulation (PWM) inverter. In this paper, we report...
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