AUXILIARY RESONANCE CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a high-performance auxiliary resonance circuit with a small number of parts for use. SOLUTION: The auxiliary resonance circuit consists of a first switching element that electrically breaks a DC link and a DC power source and a reactor that connects in parallel two switching elements connected in series to the DC power source and is inserted between a mutual contact of the two switching elements and a DC link contact of the first switching element.