SENSORLESS VECTOR CONTROLLED THREE-PHASE PWM INVERTER-FED INDUCTION MOTOR DRIVE SYSTEM WITH AUTO-TUNING ESTIMATION OF MACHINE PARAMETER APPROACH

Sayed, Khairy; Kassem, Ahmed M.

doi:10.21608/sej.2021.155853

SENSORLESS VECTOR CONTROLLED THREE-PHASE PWM INVERTER-FED INDUCTION MOTOR DRIVE SYSTEM WITH AUTO-TUNING ESTIMATION OF MACHINE PARAMETER APPROACH

Document Type : Original research articles

Authors

Electrical Engineering Department, Sohag University, 82524, Sohag, Egypt

10.21608/sej.2021.155853

Abstract

This paper deal with a practical development technology on a highly accurate faster response adjustable speed drive implementation for the three-phase sinewave fed general purpose induction motor system which is based upon sensorless slip frequency type vector control scheme with an automatic auto-tuning machine parameter estimation strategy. The essential procedure and considerations to measure and estimate the exact stator and cage rotor circuit parameters of the induction motor treated here are discussed under its operating conditions. The speed regulation characteristics of the induction motor is illustrated and evaluated for the induction machine parameter variations under the actual operating conditions ranging from a low frequency to a high frequency for various specified load torque setting. The variable speed induction motor drive system employing sensorless slip frequency-based vector control scheme which incorporates the current controlled three-phase high frequency carrier PWM switching inverter with automatic auto-tuning estimation strategy on the temperature-dependent and -independent machine circuit parameters is practically implemented using DSP-based vector controller. The dynamic speed response performances under essentially changed load torque disturbances as well as steady state speed against torque characteristics of the proposed variable speed drive control and implementations are illustrated and discussed from an experimental point of view.

Keywords

References

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