A waveform control method of AC to DC converters with high-frequency links

Katsuhisa Inagaki, Takeshi Furuhashi, Akio Ishiguro, Shigeru Okuma, Yoshiki Uchikawa, Muneaki Ishida

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Transformer isolation is a usual practice for ohmic isolation between a source and a load. The transformer designed for commercial frequency (50/60Hz) makes the converter bulky and heavy. Therefore, high-frequency link converters have been studied to make the transformer smaller and to minimize the weight, size and cost of the converters. This paper presents a new real-time control method of AC to DC converters with high-frequency links (switch mode rectifiers: SMR's). Results are as follows: (1) The new method makes the switching frequency of the SMR smaller than the conventional method. (2) The proposed method realizes sinusoidal input current, arbitrary output voltage waveform and controllable input displacement factor. The maximum output voltage ratio to the input liveto-neutral voltage is 3/2. (3) The new method is suitable for real time control and suppression of DC magnetization of the high-frequency transformer can easily be implemented. (4) Feasibility of the proposed method is confirmed by simulations and experiments. Using this method, it is easy to control the voltage waveform of the primary winding of the high-frequency tranformer by changing the output function, so that it is possible to compensate the unbalance of the source voltage and influence of the dead time.

Original languageEnglish
Pages (from-to)525-533
Number of pages9
JournalIEEJ Transactions on Industry Applications
Volume110
Issue number5
DOIs
Publication statusPublished - 1990 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'A waveform control method of AC to DC converters with high-frequency links'. Together they form a unique fingerprint.

Cite this