Application of H∞ Control to Improve the Current and Speed Loops of Switched Reluctance Motor Drives

[+] Author and Article Information
Mi-Ching Tsai

Department of Mechanical Engineering, National Cheng Kung University, Tainan, 701 Taiwan, ROCe-mail: mctsai@mail.ncku.edu.tw

J. Dyn. Sys., Meas., Control 123(3), 363-369 (Jun 08, 2000) (7 pages) doi:10.1115/1.1387016 History: Received June 08, 2000
Copyright © 2001 by ASME
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An 8/6 pole switched reluctance motor
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Block diagram of a fully digital control switched reluctance motor drive
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Ideal phase inductance and the generated torque
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Five different rotor positions
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The measured frequency responses of the current loop in the five positions of Fig. 4
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The 2 DOF control scheme
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Closed-loop frequency responses of the current loop
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The H controller placed on feedback path
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Closed-loop frequency responses of the speed loop
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The control structure of PI controller
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The step response of the H design for the speed input from 3000 rpm–3500 rpm
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Disturbance suppression for unity step unload: (a) H design; (b) PI design



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