Journal ArticleDOI
Three-phase flyback AC-DC convertor with sinusoidal supply currents
R. Itoh,K. Ishizaka +1 more
- Vol. 138, Iss: 3, pp 143-151
TLDR
In this paper, a three-phase flyback AC-DC convertor with step-up and stepdown characteristics of output voltage is described, which has a near unity power factor.Abstract:
A three-phase flyback AC-DC convertor which has the step-up and step-down characteristics of output voltage, is described. The introduction of pulsewidth modulation makes it possible to obtain the sinusoidal supply currents with a near unity power factor. Three gate-turn-off thyristors provide the necessary control over the currents for unidirectional power flow. To improve upon the oscillatory transient operations, the tested system includes the digital PID controller using a microcomputer for output voltage regulations. The experimental results and state-space simulations confirm the usefulness of the presented convertor. >read more
Citations
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Journal ArticleDOI
A review of single-phase improved power quality AC-DC converters
TL;DR: This paper presents an exhaustive review of three-phase improved power quality AC-DC converters configurations, control strategies, selection of components, comparative factors, recent trends, their suitability, and selection for specific applications.
Journal ArticleDOI
A novel three-phase single-switch discontinuous-mode AC-DC buck-boost converter with high-quality input current waveforms and isolated output
TL;DR: In this article, a three-phase single-switch AC-DC flyback converter system is presented, which operates in the discontinuous mode, and the simple structure of its power and control circuit, low mains current distortion, and resistive fundamental behavior, as well as the high-frequency isolation of the controlled output voltage, have been pointed out.
Journal ArticleDOI
Three-phase single-stage four-switch PFC buck-boost-type rectifier
V.F. Pires,José Fernando Silva +1 more
TL;DR: This paper proposes a new three-phase single-stage power-factor corrector buck-boost-type rectifier topology that only requires four switches, improving the rectifier efficiency as only one reverse-blocking power semiconductor conducts at any time.
Journal ArticleDOI
Comparative evaluation of modulation methods of a three-phase buck + boost PWM rectifier. Part I: Theoretical analysis
TL;DR: Different switching state sequences of a three-phase three-switch buck-type unity power factor PWM rectifier with integrated DC/DC boost output stage with pulse frequencies of different modulation methods are presented to achieve the same switching losses.
Journal ArticleDOI
Analysis and Design of a Novel Three-Phase AC–DC Buck-Boost Converter
TL;DR: In this paper, the authors proposed a three-phase ac-dc buck-boost converter, which uses four active switches, which are driven by only one control signal, and achieves purely sinusoidal input current, high power factor, low total harmonic distortion of the input current and step-up/down output voltage.
References
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Journal ArticleDOI
Indirect current control of a unity power factor sinusoidal current boost type three-phase rectifier
Juan Dixon,Boon-Teck Ooi +1 more
TL;DR: In this paper, the inner hysteresis current feedback loop was replaced by the standard sinusoidal PWM control and in the process saving the cost of the current measuring transducers.
Journal ArticleDOI
A Three-Phase Controlled-Current PWM Converter with Leading Power Factor
TL;DR: In this paper, a three-phase bipolartransistor controlled-current PWM power modulator with a 360-degree power angle range was used to operate with near-sinusoidal currents at 60 Hz.
Journal ArticleDOI
Three-Phase AC/DC PWM Converter with Sinusoidal AC Currents and Minimum Filter Requirements
L. Malesani,Paolo Tenti +1 more
TL;DR: In this article, a pulsewidth modulation (PWM) control technique suitable for fully controlled three-phase ac/dc converters is analyzed, which gives sinusoidal input currents and ideally smoothed dc voltage.
Journal ArticleDOI
PWM Control Techniques for Rectifier Filter Minimization
TL;DR: In this article, three PWM control techniques that yield substantial filter size reduction for three-phase (self-commutated) rectifiers are presented and analyzed, and it is shown that in addition to filter minimization two of the proposed three control techniques improve substantially the rectifier total input power factor.
Journal ArticleDOI
Hysteresis current-forced three-phase voltage-sourced reversible rectifier
A.W. Green,J.T. Boys +1 more
TL;DR: In this article, a voltage-sourced reversible rectifier (VSRR) is described, which achieves bidirectional power flow between a three-phase AC supply and a DC bus voltage.
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