Patent ID: 9030282
Filing Date: 2015-05-12
Classification: H01F

Abstract:
1. A permanent magnet DC inductor, comprising: at least two separate magnetic inductors, each inductor having a core structure and forming closed individual magnetic paths, wherein each core structure includes two side legs and a center leg having a first portion that joins the side legs at one end of the core structure and a second portion that extends between the side legs and establishes a first magnetic gap with each side leg at another end of the core structure; a winding provided on the second portion of the center leg of each core structure wherein the core structures of the separate inductors adjacent and have external magnetic gaps formed between adjacent side legs of each core structure and at most a second magnetic gap formed between the second portions of the center leg of each core structure, and wherein each core structure has at least one permanent magnet piece arranged inside each external magnetic gap.