A novel CSI-fed induction motor drive

Abdul Rahiman Beig, V. T. Ranganathan

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


Current source inverter (CSI) fed drives are employed in high power applications. The conventional CSI drives suffer from drawbacks such as harmonic resonance, unstable operation at low speed ranges, and torque pulsation. This paper presents a novel CSI drive which overcomes all these drawbacks and results in sinusoidal motor voltage and current even with CSI switching at fundamental frequency. The proposed CSI drive uses a three-level inverter as an active filter across motor terminals replacing the bulky ac capacitors used in the conventional drive. A sensorless vector controlled CSI drive based on proposed configuration is developed. The simulation and experimental results are presented. Experimental results show that the proposed drive has stable operation even at low speeds. Comparative results show that the proposed CSI drive has improved torque ripple compared to the conventional configuration.

Original languageBritish English
Pages (from-to)1073-1082
Number of pages10
JournalIEEE Transactions on Power Electronics
Issue number4
StatePublished - Jul 2006


  • Active filters
  • Current control
  • Current source inverters (CSI)
  • Harmonic distortion
  • Induction motor drives
  • Multilevel inverters
  • Pulsewidth modulation (PWM)


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