Global Patent Index - EP 4160631 A1

EP 4160631 A1 20230405 - PLANAR WINDING STRUCTURE FOR POWER TRANSFORMER

Title (en)

PLANAR WINDING STRUCTURE FOR POWER TRANSFORMER

Title (de)

PLANARE WICKLUNGSSTRUKTUR FÜR LEISTUNGSTRANSFORMATOR

Title (fr)

STRUCTURE D'ENROULEMENT PLANE POUR TRANSFORMATEUR DE PUISSANCE

Publication

EP 4160631 A1 20230405 (EN)

Application

EP 22169666 A 20220425

Priority

  • US 202163179784 P 20210426
  • US 202117471142 A 20210909

Abstract (en)

The present disclosure provides a printed circuit board (PCB) based planar winding structure (500) for a main power transformer and/or an auxiliary power need. The PCB-based planar winding structure (500) can confine electric field through magnetic core potential control and thus create partial discharge (PD) free design for medium voltage (MV) applications. Meanwhile, the winding structure can be formed in the PCB manufacturing process to create a more modular and reliable structure, thereby enhancing manufacturability. Techniques, such as termination treatment, primary and secondary winding arrangements, etc., can be used to control the electrical stress in the medium voltage applications.

IPC 8 full level

H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01); H01F 27/36 (2006.01)

CPC (source: EP)

H01F 27/2804 (2013.01); H01F 27/29 (2013.01); H01F 27/327 (2013.01); H01F 27/36 (2013.01); H01F 2027/2809 (2013.01)

Citation (applicant)

  • J. WANGA. Q. HUANGW. SUNGY. LIUB. J. BALIGA: "Smart grid technologies", IEEE INDUSTRIAL ELECTRONICS MAGAZINE, vol. 3, no. 2, June 2009 (2009-06-01), pages 16 - 23
  • D. ROTHMUNDG. ORTIZT. GUILLODJ. W. KOLAR: "lOkV SiC-based isolated DC-DC converter for medium voltage-connected Solid-State Transformers", 2015 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC), CHARLOTTE, NC, USA, 2015, pages 1096 - 1103, XP032775167, DOI: 10.1109/APEC.2015.7104485
  • Q. CHEN: "High Frequency Transformer Insulation in Medium Voltage SiC enabled Air-cooled Solid-State Transformers", 2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE), PORTLAND, OR, USA, 2018, pages 2436 - 2443, XP033463917, DOI: 10.1109/ECCE.2018.8557849
  • S. ZHAOQ. LIF. C. LEEB. LI: "High-Frequency Transformer Design for Modular Power Conversion From Medium-Voltage AC to 400 VDC", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 33, no. 9, September 2018 (2018-09-01), pages 7545 - 7557, XP011686292, DOI: 10.1109/TPEL.2017.2774440
  • L. HEINEMANN: "An actively cooled high power, high frequency transformer with high insulation capability", APEC. SEVENTEENTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (CAT. NO.02CH37335), DALLAS, TX, USA, vol. 1, 2002, pages 352 - 357, XP010582944, DOI: 10.1109/APEC.2002.989270
  • C. LOEFR. W. DE DONCKERB. ACKERMANN: "On high frequency high voltage generators with planar transformers", 2014 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION - APEC 2014, FORT WORTH, TX, USA, 2014, pages 1936 - 1940, XP032590947, DOI: 10.1109/APEC.2014.6803571

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4160631 A1 20230405

DOCDB simple family (application)

EP 22169666 A 20220425