A novel PWM method of three-level rectifiers for controlling input-current harmonics at lower switching frequencies

N. Hoshi, T. Tanaka, T. Kubota, K. Oguchi, K. Sakakibara

Research output: Contribution to journalConference article

7 Citations (Scopus)


This paper propose a novel "inverse-problems" approach to control a three-level rectifier so that the harmonic standards such as IEC 1000-3-2 class A can be met at lower switching frequencies. A conventional programmed switching method eliminates some designated harmonics of converter voltages. This results in a considerable increase in the amplitude of the residual lower harmonics and requires large input filter inductors to meet the standard. The proposed method does not eliminate the lower harmonics, but controls those amplitudes to meet the standard. As a result, the inductance required for the input filter can decrease to 45 - 33% of the conventional method.

Original languageEnglish
Pages (from-to)611-618
Number of pages8
JournalConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Publication statusPublished - 1 Jan 2001
Event36th IAS Annual Meeting -Conference Record of the 2001 Industry Applications - Chicago, IL, United States
Duration: 30 Sep 20014 Oct 2001


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