Simple new PWM patterns for thyristor three-phase AC/DC convertors
作者:
S.K.Biswas,
M.S.Mahesh,
B.S.R.Iyengar,
期刊:
IEE Proceedings B (Electric Power Applications)
(IET Available online 1986)
卷期:
Volume 133,
issue 6
页码: 354-358
年代: 1986
DOI:10.1049/ip-b.1986.0047
出版商: IEE
数据来源: IET
摘要:
Thyristor forced commutated AC/DC convertors are useful for improving the power factor and waveform of AC-side line current. These are controlled through pulse-width modulation schemes for best performance. However, the 3-phase versions impose restrictions on the PWM strategies that can be implemented for excellent harmonic rejection. This paper presents new PWM control strategies for the 3-phase converters and compares them along with the conventional 4-pulse PWM strategy for harmonic elimination. Finally, two new PWM strategies are shown to be the best, for which oscillograms are presented from actual implementation.
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