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Algebraic Modulation Scheme for Current Source Converter
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DOI：10.1109/TPEL.2023.3304020.png)
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Abstract
En 中文
In this article, an algebraic modulation scheme is tailored for the three-phase current source converter, featuring easy implementation, low computation, and flexibility. The general form of the modulation vector is first obtained by solving nonhomogeneous equations of converter current synthesis. The duty-cycle constraints are satisfied by designing the free variables in the general modulation vector. Then, the switching sequence is flexibly arranged according to the performance requirement. Based on the algebraic modulation scheme, two optimized modulation strategies are further developed, where one for common-mode voltage reduction and another for dc-link current ripple reduction. The feasibility of the proposed methods is validated by laboratory experiments.
Keywords:
Algebraic modulation (AM)
current source converter (CSC)
modulation vector
switching sequence
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6.5
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1.7W
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8.3W
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