Dynamic emulation of mechanical loads using a vector-controlledinduction motor-generator set
Hakan Akpolat, Z.; Asher, G.M.; Clare, J.C.
Industrial Electronics, IEEE Transactions on
Volume 46, Issue 2, Apr 1999 Page(s):370 - 379
Digital Object Identifier   10.1109/41.753776
Summary:This paper addresses the problem of electronic emulation of both linear and nonlinear mechanical loads using a vector-controlled induction machine dynamometer. It is shown that a basic emulation scheme where the dynamometer torque demand is derived from the inverse dynamics of the emulated load is not generally viable, especially if the emulated load is part of a closed-loop speed control system. A new feedforward speed-tracking control scheme for the dynamometer is presented, which preserves the load dynamics and allows for emulation of a large class of nonlinear loads. An experimental rig is described using vector-controlled induction machines as the drive motor and dynamometer, and experimental results showing excellent emulation of both linear and nonlinear load dynamics are presented

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