Optimizing pulse patterns with Bernoulli polynomials

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United States of America

PATENT NO 12237761
APP PUB NO 20230155481A1
SERIAL NO

17908159

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Abstract

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Described herein is method for controlling an electrical converter, the electrical converter converting an input voltage (vin) into a multi-level output voltage (vout), the method incudes: determining an optimized pule pattern (u(x)); and determining switching states from the optimized pulse pattern (u(x)) and applying the switching states to semiconductor switches of the electrical converter, such that the multi-level output voltage (vout) is generated, where the optimized pulse pattern (u(x)) includes a plurality of switching transitions (Δu), each switching transition (Δui) encoding a transition between two different levels of the multi-level output voltage (vout), at a switching angle (xi), where the optimized pulse pattern (u(x)) is determined by optimizing a cost function, where the cost function J(x)=ΔuTA(x)Δu is a cost matrix A(x), and where each entry of the cost matrix A(x) depends on polynomials into which the switching angles (xi) are input.

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Patent Owner(s)

  • ABB SCHWEIZ AG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Geyer, Tobias Ennetbaden, CH 26 199
Mouton, Hendrik du Toit Stellenbosch, ZA 2 1

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