Dynamic emulation of mechanical loads using a vector-controlledinduction motor-generator set
Hakan Akpolat, Z.
Asher, G.M.
Clare, J.C.
Dept. of Electr. & Electron. Eng., Nottingham Univ.;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Apr 1999
Volume: 46,
Issue: 2
On page(s): 370-379
ISSN: 0278-0046
References Cited: 13
CODEN: ITIED6
INSPEC Accession Number: 6221689
Digital Object Identifier: 10.1109/41.753776
Current Version Published: 2002-08-06
Abstract
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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