DYNAMIC EMULATION OF MECHANICAL LOAD USING VECTOR-CONTROLLED INDUCTION MOTOR-GENERATOR SET

초록

This paper presents the dynamic emulation of mechanical load using vector-controlled induction motor-generator set with a load torque observer and a feed-forward control. To operate dynamometer, the conventional control method using vector-controlled induction motor-generator set requires the special structure to must offer the torque value of the motor to be tested to dynamometer. Therefore the control scheme such as the method to detect the torque value of the motor to be tested is difficult to adapt to real industrial applications in application fields. In the proposed system, the dynamic emulation of mechanical load is realized without the torque detection of the motor to be test. To realize it, to estimate the driving torque of motor under test using a torque observer control for the dynamometer is presented, and the feed-forward control scheme to improve the dynamic emulation of mechanical load using VCIM is applied, which preserves the load dynamics and allows for emulation of mechanical loads without the torque detection of the motor to be test, The experimental results and simulation using MATLAB show excellent emulation of load dynamics