High power GTO AC/DC current source converter with minimum switching frequency and maximum power factor

Xiao, Yuan; Wu, Bin; DeWinter, F.A.; Sotudeh, R.

doi:10.1109/ccece.1996.548104

Cited by 10 publications

(3 citation statements)

References 6 publications

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“…Two switching patterns suitable for high-power converters are listed in Table I, where it is indicated that the maximum amplitude of the lowest order harmonic current is 57% for switching pattern A and 61% for pattern B [4]. The resonant frequency should be selected such that the amplitude of the harmonic current in the inductor should be much lower than that generated by the converter.…”

Section: Minimum Capacitor Sizementioning

confidence: 99%

“…However, the use of the filter capacitor makes the input power factor leading. For high-power converters (500 kVA and above), the switching frequency is usually limited to several hundred hertz [1], [4]. The converter operated with this low switching frequency requires a relatively large filter capacitor, typically in a range of 0.2-0.6 per unit (refer to Appendix for definition of the per-unit system used in this paper).…”

Section: Introductionmentioning

confidence: 99%

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A novel power factor control scheme for high-power GTO current-source converter

Xiao

Rizzo

et al. 1998

IEEE Trans. on Ind. Applicat.

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This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.---- Copyright IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.A novel power factor control scheme for high-power gate-turn-off thyristor current-source converters is proposed in this paper. Using both feedforward and feedback control techniques, the proposed scheme guarantees that the input power factor of the converter can be kept at unity or a maximum achievable value. Another feature of this scheme is parameter insensitive, that is, variations in the line and load impedance or changes in the filter capacitor size will not affect the process of tracking the maximum input power factor. No parameters in the control scheme should be adjusted to accommodate such variations or changes. Simulation and experimental results are provided to verify the operating principle of the scheme

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Section: Minimum Capacitor Sizementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel power factor control scheme for high-power GTO current-source converter

Xiao

Rizzo

et al. 1998

IEEE Trans. on Ind. Applicat.

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“…This requirement presented is also imposed by the switching characteristics of high-power GTO devices [4], [5]. In order to minimize the switching frequency, while keeping the input current close to sinusoidal, a novel GTO currentsource converter topology, as shown in Fig.…”

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confidence: 99%

A dual GTO current source converter topology with sinusoidal inputs for high power applications

Xiao

Wu²,

DeWinter³

et al.

Proceedings of APEC 97 - Applied Power Electronics Conference

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Abstract-A dual gate-turn-off thyristor current-source converter topology with sinusoidal inputs is proposed for high-power applications. The sinusoidal input current is realized by using pulsewidth modulation techniques to eliminate 11th and 13th harmonics and a transformer to cancel 5th, 7th, 17th, and 19th harmonics. Three switching patterns are proposed with a switching frequency of 360 or 420 Hz. The combination of these switching patterns provides a full-range control over the dc output current. Resonant modes of the proposed system are identified, and the criterion for the line capacitor design is provided. Simulation and experimental results are given to verify the theoretical analysis.

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PWM Current Source Rectifiers

Wu¹

2005

High‐Power Converters and Ac Drives

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High power GTO AC/DC current source converter with minimum switching frequency and maximum power factor

Cited by 10 publications

References 6 publications

A novel power factor control scheme for high-power GTO current-source converter

A novel power factor control scheme for high-power GTO current-source converter

A dual GTO current source converter topology with sinusoidal inputs for high power applications

PWM Current Source Rectifiers

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