Winding core than laminated iron core characteristics and advantages

Flat iron core structure weakness plane roll core and fold as core, three column are arranged plane, such making that the magnetic circuit of three legged length inconsistent: magnetic circuit in the column length is short, two side column magnetic circuit length is longer, on average, about 20% longer magnetic circuit, resulting in three legged no-load loss difference is bigger, the stele low no-load loss and no-load loss is bigger, two side pillar of the three-phase imbalance.