Patent ID: 11948722
Assignee: NATIONAL TAIPEI UNIVERSITY OF TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A planar winding transformer, comprising:
a magnetic core set comprising:
a first magnetic core and a second magnetic core, which are parallel to each other, and
only two magnetic columns, which comprise a first magnetic column and a second magnetic column, which are disposed between the first magnetic core and the second magnetic core; and

a plurality of sub-transformers disposed between the first magnetic core and the second magnetic core, wherein a number of the sub-transformers is 2N, N is a natural number and greater than or equal to 2, the sub-transformers are constituted by a plurality of multilayer circuit boards, the multilayer circuit boards are stacked between the first magnetic core and the second magnetic core, the first magnetic column and the second magnetic column penetrate through the multilayer circuit boards, and each of the multilayer circuit boards comprises:
a first low voltage winding layer,
a second low voltage winding layer connected in parallel with the first low voltage winding layer, and
a high voltage winding layer disposed between the first low voltage winding layer and the second low voltage winding layer;

wherein, when the high voltage winding layer receives a polarity current, the first low voltage winding layer and/or the second low voltage winding layer generate a corresponding induced current, and the first magnetic core, the second magnetic core, the first magnetic column and the second magnetic column form a closed path for magnetic flux.