VECTOR METHOD FOR CONTROL OF THREE-PHASE STATIC CONVERTER WITH ASYMMETRIC LOAD Russian patent published in 2012 - IPC H02M5/27 H02M7/539 H02P9/42 H02P21/00 

FIELD: electricity.

SUBSTANCE: in the vector method of control a three-phase output value is converted into a rotary dq-system of coordinates, zero reference values of harmonic components are generated for d- and q-components of the output value, for d- component of the output value the reference signal is generated accordingly to the rated value of the output value, the reference signal of q-component of the output value is generated as zero, the above specified signals of comparison of d- and q-components of the output value are generated by integration of differences of appropriate reference signals and signals proportionate to d- and q-components of the output value, difference signals are generated by distraction of signals proportional to d- and q-components of the output value from the appropriate reference signals of harmonic components, in difference signals for d- and q-components of the output value the harmonic components are extracted with high amplification ratio, and the specified control signals for d- and q-components of the output value are generated by summation of the appropriate comparison signals and extracted harmonic components for d- and q-components of the output value.

EFFECT: higher quality of generated power due to exclusion of reverse sequence from a three-phase signal in case of a non-symmetrical load and due to increased accuracy of direct sequence stabilisation.

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