Output current ripple-free PWM inverters

Ching Tsai Pan, Ching Ming Lai, Yu-Lin Juan

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


In this brief, a simple modular passive ripple mirror circuit (PRMC) is proposed for eliminating the inherent high-frequency current ripple of pulsewidth modulation (PWM) inverters. The proposed passive circuit is robust in the sense of without containing either any power semiconductor switch or any extra control. Only the reflected high-frequency ripples are automatically induced and processed for proper cancellation with the original ripples. It turns out that not only the output power quality can be enhanced but also the inductance of the main power circuit can be reduced greatly. As an example, a single-phase PWM inverter is chosen for illustrating the effectiveness of the proposed PRMC. Experimental results show that the proposed PRMC can, indeed, achieve the desired performance.

Original languageEnglish
Article number5559409
Pages (from-to)823-827
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Issue number10
Publication statusPublished - 2010 Oct 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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