Inverter

Abstract

Abstract PURPOSE:To cause the pulse currents of ACs to flow through a current transformer, and to prevent the magnetic saturation of the current transformer by ON-OFF controlling a self-arc-extinguishing type switching element for a power conversion circuit at every ON-OFF timing of an arm element. CONSTITUTION:The primary side of a current transformer 6 and a power conversion circuit 8, a conduction path thereof includes self-arc-extinguishing type switching elements 8a-8d, are connected, and the current transformer 6 is reset on the secondary side of the cur rent transformer 6. The switching elements 8a-8d constitute a single-phase bridge rectifier circuit. Bipolar feedback currents are permitted to flow alternately through the current transformer 6, conformed to the switching timing of arm elements 1U, 1X for an inverter, thus reducing the flux level of the current transformer 6.

Inventors

• 👤 Takeaki Asaeda
• 👤 健明 朝枝

Bibliographic Details