PROBLEMS OF CONSTRUCTION OF ASYNCHRONOUS ELECTRIC DRIVES WITH STATE OBSERVERS
DOI:
https://doi.org/10.34185/1991-7848.itmm.2021.01.023Keywords:
frequency converter, asynchronous motor, state observer, mathematical model, converter, controller, sensorAbstract
This paper considers the problems of constructing asynchronous electric drives with state observers and the latest advances in the field of sensorless alternating current drives. The main areas of application of asynchronous electric drives with state observers are determined. A vector sensorless control system using coordinate converters from a natural coordinate system to a stationary and rotating one and a state observer based on a mathematical model of a motor in a two-phase stationary coordinate system was used as a basic one when considering the structures of modern asynchronous electric drives. The main types of flow and speed observers of asynchronous electric drives are considered for the tasks of constructing a high-quality asynchronous electric drive with vector control without using sensors. The problem was formulated for further modernization of control systems based on an electric drive with a flow and speed observer.
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