Common-mode voltage attenuation of an active common-mode filter in a motor drive system fed by a PWM inverter

Shotaro Takahashi, Satoshi Ogasawara, Masatsugu Takemoto, Koji Orikawa, Michio Tamate

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)


The switching speeds of next-generation power semiconductor devices, such as those made of silicon carbide and gallium nitride are roughly ten times those of conventional devices (e.g., silicon insulated-gate bipolar transistors). This increases the frequency range of the electromagnetic noise accompanying the switching operations of pulsewidth modulated (PWM) converters and worsens the influence of radiated noise. The authors have previously proposed an active common-mode filter (ACF) that reduces the radiated noise from the power cables connected to a PWM converter and evaluated its effect in reducing radiated noise by using a function generator as a common-mode (CM) noise source. In this paper, the ACF is applied to a motor drive system fed by a three-phase PWM inverter, and the attenuation characteristics of the CM voltage are evaluated. To avoid saturating the ACF, the combination of an active common-noise canceller and the ACF is discussed. The experimental results show that the system constructed in this paper can suppress the CM voltage produced by the PWM inverter over a wide frequency range from 100 to 100 MHz.

Original languageEnglish
Article number8607029
Pages (from-to)2721-2730
Number of pages10
JournalIEEE Transactions on Industry Applications
Issue number3
Publication statusPublished - May 1 2019
Externally publishedYes


  • Active common-mode filter (ACF)
  • active common-noise canceller (ACC)
  • common-mode (CM) voltage
  • electromagnetic interference (EMI)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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