Principle and fundamental characteristics of a new variable inductor for improved waveforms

Himei, Toyoji; Funabiki, Shigeyuki; Komatsubara, Hitoshi

doi:10.1002/eej.4391030411

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Setting Of Firing Angle and Harmonics1

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1985

2018

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“…In the both cases the firing angles are selected so as to satisfy the condition in Eq. (11) and not to increase the ratings of thyristor and reactor (8).…”

Section: Setting Of Firing Angle and Harmonicsmentioning

confidence: 99%

Control method of variable inductor for improved waveforms.

et al. 1985

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SummaryThis paper describes the theory, the distinctive features and the control method of the variable inductor with improved waveforms by means of an asymmetrical firing control of thyristors.The generation of harmonics can be effectively suppressed by means of the control method introduced in this variable inductor, then the harmonics are reduced less than one third of the conventional type. This strong point is experimentally confirmed by using a microcomputer-based control system. The experimental results are represented in two cases of the settings of firing angles to suppress both of the 5th and 7th harmonics and to suppress the 3rd harmonic. The response of the Var compensator with the variable inductor to the step change of the reactive power is examined and discussed.

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“…In the both cases the firing angles are selected so as to satisfy the condition in Eq. (11) and not to increase the ratings of thyristor and reactor (8).…”

Section: Setting Of Firing Angle and Harmonicsmentioning

confidence: 99%