Dual-DSP sensorless speed control of an induction motor with adaptive voltage compensation

Ying-Yu Tzou*, Wen Ao Lee, Shiu Yung Lin

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


This paper presents a new sensorless speed control scheme for adjustable ac induction motor drive. In the proposed scheme, rotor flux oriented vector control is used to decouple nonlinearity of the induction motor and stator flux based flux estimator is used estimate the synchronous speed. The motor speed can be estimated using only the phase currents and dc-link voltage. An adaptive voltage compensation scheme is proposed to compensate the nonlinearities resulted by the PWM inverter and eliminate the time delay of conventional line voltage sensor filters. A dual-DSP based digital control development system has been used realize the proposed sensorless control scheme. Experimental results show the proposed sensorless speed control scheme can achieve fast transient responses and at the same time maintain a wide speed control range.

Original languageEnglish
Article number548603
Pages (from-to)351-357
Number of pages7
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
StatePublished - 23 Jun 1996
EventProceedings of the 1996 27th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2) - Maggiore, Italy
Duration: 1 Jan 19961 Jan 1996

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