Modulation Technique for a $3 \times 5$ Matrix Converter Achieving a Maximum Input Reactive Power Range Based on Load Information

Abstract

In this article, a load information-based modulation algorithm is proposed for a three-input five-output matrix converter (3 ×5 MC) to achieve a maximum input reactive power, whose superiority can be illustrated visually through a 2-D modulation graph. This article first derives the modulation matrix and its inherent constraints in the framework of duty-cycle calculation. After that, a constrained optimization problem for maximizing the reactive power is formulated; with the aforementioned constraints mapped to the 2-D modulation graph, the solution can be obtained without a substantial computational burden. The main contribution of this article is the adoption of a 2-D modulation graph to solve the constrained optimization problem for maximizing the input reactive power of a 3 ×5 MC, which presents a new viewpoint by employing load information in modulation constraints. Finally, experiment results are presented for assessing the performance of the proposed modulation algorithm.