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Linear control design for a current-injection-based three-phase unity-power-factor rectifier

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6 Author(s)
Kanaan, H.Y. ; Ecole de Technol. Superieure, Montreal, Que., Canada ; Fortin-Blanchette, H. ; Al-Haddad, K. ; Chaffai, R.
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In this paper, a new control strategy based on the pulsewidth-modulation technique is proposed and applied to an active-current-injection-based unity-power-factor three-phase ac-dc converter. The control circuit of the converter consists of a multivariable inner current regulator and an outer voltage regulator. Based on linear control techniques, the control circuit has been designed. Averaging techniques are used to derive a linear small-signal model of the converter in the frequency domain. Numerical simulations using the Power System Blockset tool of Matlab/Simulink highlight the performance of the proposed control scheme. Experimental results obtained on a 2-kW prototype validate the theoretical approach described in the paper.

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Industrial Electronics, IEEE Transactions on  (Volume:51 ,  Issue: 2 )