A1 N.M.B. Abdel-Rahim

A1 A. Shaltout

PB iet

T1 Torsional vibration control of large induction motors using constant air gap flux scheme

JN IET Electric Power Applications

VO 6

IS 8

SP 545

OP 552

AB Comprehensive analysis of the starting period of inverter-fed large induction motors reveals that these motors are subjected to additional components of pulsating torsional torque. These torque pulsations may coincide with the natural torsional frequency of the large motor system and produce hazardous shaft torque oscillations. To alleviate the torsional toque problem and limit the motor starting current, a constant air-gap flux using slip frequency control scheme is proposed to operate the motor inverter. Simulation results show that the proposed scheme is capable of drastically reducing the torsional torque oscillations and limiting the motor line current to approximately 22% of its direct online starting value without prolonging its starting period.

K1 inverter-fed large induction motors

K1 direct online starting value

K1 constant air-gap flux

K1 hazardous shaft torque oscillations

K1 slip frequency control scheme

K1 large motor system

K1 pulsating torsional torque

K1 torsional vibration control

K1 natural torsional frequency

K1 motor line current

K1 torque pulsations

K1 motor starting current

K1 constant air gap flux scheme

K1 torsional toque problem

K1 motor inverter

K1 torsional torque oscillations

K1 starting period

DO https://doi.org/10.1049/iet-epa.2011.0129

UL https://digital-library.theiet.org/;jsessionid=94ofr1k4a4yl.x-iet-live-01content/journals/10.1049/iet-epa.2011.0129

LA English

SN 1751-8660

YR 2012

OL EN