Abstract
A method for studying a combined power electronic network/variable-speed AC electric motor drive system based on a simple numerical algorithm is presented. It can be applied to any machine that can be describing using a d-q-type model. An LCI-fed synchronous motor drive in the steady state is used as an illustrative example. A simple iterative technique is used to find the initial conditions in the time domain, making use of an infinite link inductance approximation to provide the first iteration. The predicted waveforms of voltage and current for a sample operating point are compared with their experimental equivalents (measured on a 3 kVA prototype drive system), and a good level of agreement is reached. The technique is sufficiently simple to have been implemented on a personal computer.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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