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Real time hysteresis controller for relay testing

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2 Author(s)
Khanniche, M.S. ; Dept. of Electr. & Electron. Eng., Univ. Coll. of Swansea, UK ; Lake, I.D.W.

The paper presents a novel sinusoidal current controller for nonlinear loads based on an AC chopper topology using a hysteresis current control scheme. The Intel 80C196KC, 16-bit single chip microcontroller is used to implement the developed control algorithms online and in real time resulting in a significant reduction in weight and cost. The validity of the developed controller has been assessed in the development of an overcurrent test relay system; practical and simulated results are presented

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Electric Power Applications, IEE Proceedings -  (Volume:141 ,  Issue: 2 )