Spectral characteristics of resonant-link inverters

Stephen J. Finney, Tim C. Green, Barry W. Williams

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Improvement in the frequency spectrum of resonant-link inverters does not match the increase in switching frequency because of the restriction of integral pulse modulation schemes such as delta modulation. Comparisons of low-frequency pulse width modulation with high-frequency delta modulation show that the spread spectrum of delta modulation may cause problems owing to low-frequency harmonics, despite a better total harmonic distortion. An assessment of total losses, for a bipolar junction transistor Darlington example, is used to set the operating frequency in each modulation case.

Original languageEnglish
Pages (from-to)562-570
Number of pages9
JournalIEEE Transactions on Power Electronics
Issue number4
Publication statusPublished - Oct 1993


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