Phase-Controlled DC-AC Converter with High-Frequency Switching

Koosuke Harada, Hiroshi Sakamoto, Masahito Shoyama

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


An analysis of the phase-controlled dc-ac converter is presented. This converter has a pair of switches in each side of the primary and the secondary of the isolation transformer. The voltage conversion ratio is controlled by the phase difference between the two pairs of switches. The averaged equivalent circuit for low frequency is derived. The switching surge during commutation is much reduced by dividing the reactor into two parts. As a result, the transformer is miniaturized by increasing the switching frequency and the reactive energy can be easily recovered to the dc source. This dc-ac converter is especially suitable for small uninterruptible power supply (UPS) systems.

Original languageEnglish
Pages (from-to)406-411
Number of pages6
JournalIEEE Transactions on Power Electronics
Issue number4
Publication statusPublished - Oct 1988

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


Dive into the research topics of 'Phase-Controlled DC-AC Converter with High-Frequency Switching'. Together they form a unique fingerprint.

Cite this