Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A Novel Dead-Time Compensation Method using Disturbance Observer

  • Youn, Myung-Joong (Dept. of Electrical Engineering＆Computer Science, KAIST) ;
  • Moon, Hyung-Tae (Dept. of Electrical Engineering＆Computer Science, KAIST) ;
  • Kim, Hyun-Soo (Dept. of Electrical Engineering＆Computer Science, KAIST)
  • Published : 2002.01.01
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Abstract

A new on-line dead-time compensation method for a permanent magnet (PM) synchronous motor drive is proposed. Using a simple disturbance observer without any additional circuit and off-line experimental measurement, disturbance voltages in the synchronous reference dq frame caused by the dead time and non-ideal switching characteristics of power devices are estimated in an on-line manner and fed to voltage references in order to compensate the dead-time effects. The proposed method is applied to a PM synchronous motor drive system and implemented by using software of a digital signal processor (DSP) TMS320C31. Simulations and experiments are carried out for this system and the results well demonstrate the effectiveness of the proposed method.

Keywords

References

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