超電導マグネット間インダクタコンバータブリッジエネルギー転送回路の瞬時電流ベクトル制御とその高速化

概要

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We have studied energy transfer circuits of inductor converter circuits (ICB), which are used for power supplies for superconducting magnets. We derived analytical solutions of steady state characteristics of ICB energy transfer circuits. On the basis of the solutions, we discussed a new control method of ICB transfer circuit to reduce a voltage ripple across a load superconducting magnet. In this paper, we propose a new control for line-commutated converters of ICB energy transfer circuit for quick changes in a transfer angle and a transfer frequency for the voltage ripple reduction control. We discuss speeding-up of the proposed controls. Validity of the proposed controls are confirmed by computer simulations.