A Novel Soft Switching PWM Power Frequency Converter with Non DC Smoothing Filter Link for Consumer High Frequency Induction Heating

Hisayuki Sugimura, Hyun Woo Lee, Mutsuo Nakaoka, Hidekazu Muraoka, Eiji Hiraki, Izuo Hirota, Kenji Yasui, Hideki Omori

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


In this paper, high frequency power converter without DC smoothing electrolytic capacitor filter link which convert the 100V/200 Vrms and 60Hz single phase utility frequency AC power into a high frequency AC. This proposed high frequency AC power converter without electrolytic capacitor filter can operate under a principle of soft switching PWM based on a lossless capacitor snubber is proposed and demonstrated for consumer high frequency induction heating (IH). In particular, this high frequency power converter capable of producing a high frequency AC more than 20 kHz is developed for consumer IH applications as hot water producer and steamer based on the specially designed spiral type IH-Dual Packs Heater (DPH), which includes the dual mode pulse modulation control scheme based on soft switching PWM for high output power setting and commercial frequency AC zero voltage soft switching pulse density modulation (PDM) for low output power settings. This developed high frequency power frequency converter using trench gate IGBTs is clarified on the basis of experimental and simulation results for its circuit operation of the utility frequency AC to high frequency AC frequency PWM power converter without the electrolytic capacitor bank DC filter link for the IH hot water and IH steamer. These IH appliances are based upon an innovative electromagnetic IH-DPH for fluid heating as heat exchanger in consumer pipeline. Finally, its power regulation characteristics, power conversion efficiency and harmonic current components characteristics including power factor in utility AC grid side are evaluated and discussed from an experimental point of view. The practical effectiveness of this utility frequency AC to high frequency AC soft switching high power frequency converter defined conveniently as high frequency soft switching cyclo-inverter is proved as one of the important products effective for next generation IH application all electricity power utilizations.

Original languageEnglish
Pages (from-to)988-999
Number of pages12
Journalieej transactions on industry applications
Issue number11
Publication statusPublished - Sep 1 2005
Externally publishedYes


  • IH fluid heating in pipeline
  • dual mode pulse modulation
  • dual packs heater (DPH) as a steamer
  • high frequency AC power conversion
  • soft switching PWM
  • utility AC zero voltage soft switching PDM

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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