High frequency high voltage generation with air-core transformer

Saijun Mao, Chengmin Li, Tingting Song, Jelena Popovic, Jan Abraham Ferreira

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

8 Citations (Scopus)

Abstract

A novel high frequency high voltage (HV) generator circuit with air-core transformer is proposed in this paper to achieve high power density packaging structure and compact size advantages. Planar multi-layer printed circuit board(PCB) winding and litz wire wound winding structure are investigated for air-core HV transformer. The electrical design of air-core HV transformer with HV multiplier circuit based on 1.2kV SiC Schottky diode are introduced. A with 450 kHz switching frequency HV generator prototype with 310W output power and 1kV output voltage is built in lab. The litz wire air-core HV transformer prototype is built to compare the efficiency, thermal performance and size with planar air-core HV transformer. The planar PCB air-core transformer based on HV generator can achieve 80.5% efficiency and 1.09kW/L power density. The litz wire wounded transformer based HV generator provide 89.0% efficiency and around 0.53kW/L power density. The design with planar PCB air-core transformer enable high voltage generation circuit system compact planar packaging. The design with litz wire air-core HV transformer behaves higher efficiency and thermal performance with low high frequency AC winding loss.

Original languageEnglish
Title of host publication2017 IEEE International Workshop on Integrated Power Packaging, IWIPP 2017
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)978-1-5090-4278-4
DOIs
Publication statusPublished - Apr 2017
EventInternational Workshop on Integrated Power Packaging 2017, IWIPP 2017 - Delft, Netherlands
Duration: 5 Apr 20177 Apr 2017
http://iwipp.org/

Workshop

WorkshopInternational Workshop on Integrated Power Packaging 2017, IWIPP 2017
Abbreviated titleIWIPP 2017
Country/TerritoryNetherlands
CityDelft
Period5/04/177/04/17
Internet address

Keywords

  • air-core transformer
  • High frequency
  • high voltage generator
  • litz wire wounded transformer
  • planar transformer

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