Sliding-mode control of boost-type unity-power-factor PWMrectifiers
Silva, J.F.
Industrial Electronics, IEEE Transactions on
Volume 46, Issue 3, Jun 1999 Page(s):594 - 603
Digital Object Identifier 10.1109/41.767067
Summary:A robust sliding-mode controller, suitable for the output voltage
control of voltage-sourced unity-power-factor three-phase pulsewidth
modulation (PWM) rectifiers, presenting no steady-state errors, is
described. This “just-in-time” switching controller controls
the output voltage and the line input currents, while providing
bidirectional power flow, near-unity-power-factor operation, low
harmonic content, fast dynamic response of the output voltage, and
minimum switching frequency due to a new α-β space-vector
current regulator. The voltage controller performance is compared with
the behavior of the conventional proportional integral output voltage
control, aided by PWM current-mode modulators, and with the nonrobust
fast and slow manifold sliding-mode approach. The comparison shows that
the proposed controller confers faster dynamics and does not present
steady-state errors. Test results confirm that the performance of the
controller is independent of system parameters and load and exceeds the
performance of existing hysteretic current-mode control systems
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