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    MODEL PREDICTIVE CONTROL OF A CONVERTER BASED ON PULSE WIDTH MODULATED SWITCHING PATTERNS
    1.
    发明申请
    MODEL PREDICTIVE CONTROL OF A CONVERTER BASED ON PULSE WIDTH MODULATED SWITCHING PATTERNS 审中-公开

    公开(公告)号：WO2019137916A1

    公开(公告)日：2019-07-18

    申请号：PCT/EP2019/050345

    申请日：2019-01-08

    Applicant: ABB SCHWEIZ AG

    Inventor： GREYER, Tobias ,  SPUDIC, Vedrana ,  GUTSCHER, Christof ,  RUEETSCHI, Andrea

    IPC: H02P27/12 ,  H02P21/30 ,  H02P27/14 ,  H02M7/487 ,  H02M7/5395 ,  H02M7/5387

    CPC classification number: H02P27/12 ,  H02M7/487 ,  H02M7/5395 ,  H02M2007/53876 ,  H02P21/30 ,  H02P27/14

    Abstract: A method for controlling an electrical converter (12), the electrical converter (12) being adapted for converting a DC voltage (v dc ) into a multi-phase voltage with at least two voltage levels, comprises: determining a modulating signal vector (u* abc ) from a stator flux reference vector (ψ* s, αβ ); determining a switching pattern (54) from the modulating signal vector (u* abc ) via pulse width modulation, the switching pattern (54) comprising a sequence of switching transitions, wherein a switching transitions defines a switch position, at which a phase of the converter is switched from one voltage level to another voltage level, and a transition time instant at which the phase of the converter is switched; determining a stator flux error ( ψ* s,err,αβ ) by subtracting the stator flux reference vector (ψ* s,αβ ) from an estimated stator flux vector (ψ s,αβ ), which is estimated from measurements in the electrical converter (12); modifying the switching pattern (54) by moving transition time instants of switching transitions of the switching pattern (54), such that the stator flux error (ψ s,err,αβ ) is minimized; and applying at least a part of the modified switching pattern to the electrical converter (12).

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