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This paper investigates the opportunity for energy saving in a three-phase induction motor (IM) driving pump load and proposes an improved loss model control (LMC). Compared with other power-loss reduction algorithms for IM, the presented one has the advantages of fast and smooth flux adaptation, high accuracy, and versatile implementation. The performance of LMC depends mainly on the accuracy of...
Nowadays, a controlled electric drives (ED) are widely used in different fields of industry. Well-known that about 10 per cent of all electric power is consumed by controlled ED. In an asynchronous drive with valve cascade converter-asynchronous-valve cascade (AVC), the smooth start and speed control of the phase-wound rotor motor are realised. However, the frequency converter as a part of electric...
Presence of torque pulsation in an inverter fed motor drive is evident when inverter operates in square wave mode. This paper presents qualitative and quantitative approach to access the torque pulsation in an open-loop inverter fed five-phase induction motor drive system. A method is proposed to reduce the torque pulsation in transient and steady-state conditions otherwise present in the motor due...
This paper presents a new induction motor model specifically developed for simulating self-sensored variable speed drives which employ signal injection based sensorless control techniques. The model is to be used to investigate improved filtering algorithms and closed loop speed controllers. The model employs a simple state space equivalent circuit based model of the induction machine, which is enhanced...
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