New soft-switching phase-shifted PWM high-frequency inverter-linked cycloconverter incorporating voltage-clamped quasi-resonant technique

Yonemori, H.; Chibani, Ali; Nakaoka, Mutsuo

doi:10.1109/pesc.1991.162689

Cited by 20 publications

(4 citation statements)

References 6 publications

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“…For example, PDM for a three-phase cycloconverter was analyzed, modeled, and simulated in [4]. Others such as [5], [6] and [7] made revisions to the threephase PDM cycloconverter, such as using various resonant converters as the input to the cycloconverter. Additional variant on the soft cycloconverter was reported in [1] which uses an isolated input to the cycloconverter.…”

Section: Introductionmentioning

confidence: 99%

Pulse density modulated soft-switching single-phase cycloconverter

Taufik

Adamson

Prabuwono

2011

2011 IEEE Applied Power Electronics Colloquium (IAPEC)

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Abstract-Single stage cycloconverters generally incorporate hard-switching at turn on and soft-switching at turn off which limit limits their use in lower frequency applications. This paper presents a proposed solution to this problem using a pulse density modulated soft-switching cycloconverter or abbreviated PDMSS cycloconverter. Unlike standard cycloconverters, the controller in PDMSS cycloconverter lets only complete half cycles of the input waveform through to the output. This requires a much greater frequency step down from the input to the output. The analysis and design of the PDMSS cycloconverter will be described using a simulink model whose results demonstrate the ability of PDMSS to produce the sinusoidal waveforms.

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Section: Introductionmentioning

confidence: 99%

Pulse density modulated soft-switching single-phase cycloconverter

Taufik

Adamson

Prabuwono

2011

2011 IEEE Applied Power Electronics Colloquium (IAPEC)

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“…A variation of this topology, the dc-clamped type switch mode rectifier, was proposed to simplify the control strategy. The circuit utilizes a lossy RCD snubber network to limit the secondary voltage spike [21], resulting in a degradation of the efficiency. Alternatively, the authors in [22] proposed a regenerative snubber for a dcdc type HF link inverter but it requires additional power circuitry with a very complex switching scheme.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Bidirectional Cycloconverter-Type High Frequency Link Inverter with Natural Commutated Phase Angle Control

Salam¹,

Lim²,

Ayob³

2011

Journal of Power Electronics

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In this paper a cycloconverter-type high frequency transformer link inverter with a reduced switch count is analyzed and designed. The proposed topology consists of an H-bridge inverter at the transformer's primary side and a cycloconverter with three bidirectional switches at the secondary. All of the switches of the cycloconverter operate in non-resonant zero voltage and zero current switching modes. To overcome a high voltage surge problem resulting from the transformer leakage inductance, phase angle control based on natural commutation is employed. The effectiveness of the proposed inverter is verified by constructing s 750W prototype. Experimentally, the inverter is able to supply a near sinusoidal output voltage with a total harmonic distortion of less than 1%. For comparison, a PSpice simulation of the inverter is also carried out. It was found that the experimental results are in very close agreement with the simulation.

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“…Kobe University, Japan dating back to 1991 [6], [7], [8], that utilize a PDM soft switching cycloconverter as well. These papers also use various resonant converters as the input to the cycloconverter.…”

Section: Chapter 2 Backgroundmentioning

confidence: 99%

Pulse Density Modulated Soft Switching Cycloconverter

Adamson¹

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This thesis explores the analysis and design of a pulse density modulated (PDM), soft switching cycloconverter. Unlike standard cycloconverters, the controller in this converter does not adjust thyristor firing angles. It lets only complete half cycles of the input waveform through to the output. This allows and requires a much greater frequency step down from the input to the output. The advantages, shortcomings and tradeoffs of this topology are explored as this converter is designed, built and tested.The resulting cycloconverter has many deficiencies, but proves the concept of the PDM soft switching technique. Cases for further improvement and study are outlined. In the end, this converter shows much promise for applications requiring a high step down in frequency, as well as where the lower electromagnetic interference (EMI) of soft switching may be beneficial.v

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New soft-switching phase-shifted PWM high-frequency inverter-linked cycloconverter incorporating voltage-clamped quasi-resonant technique

Cited by 20 publications

References 6 publications

Pulse density modulated soft-switching single-phase cycloconverter

Pulse density modulated soft-switching single-phase cycloconverter

Analysis and Design of a Bidirectional Cycloconverter-Type High Frequency Link Inverter with Natural Commutated Phase Angle Control

Pulse Density Modulated Soft Switching Cycloconverter

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