page_title: Sparse matrix converter
section_title: Ultra Sparse Matrix Converter
hierarchical_section_title: Sparse matrix converter / Topologies / Ultra Sparse Matrix Converter
caption_attribution_description: English: Topology of the ultra-sparse matrix.
context_page_description: The Sparse Matrix Converter is an AC/AC converter which offers a reduced number of components, a low-complexity modulation scheme, and low realization effort. Invented in 2001 by Prof Johann W. Kolar
  , sparse matrix converters avoid the multi step commutation procedure of the conventional matrix converter, improving system reliability in industrial operations. Its principal application is in highly compact integrated AC drives.
context_section_description: Characteristics of the Ultra Sparse Matrix Converter topology are 9 Transistors, 18 Diodes, and 7 Isolated Driver Potentials. The significant limitation of this converter topology compared to the Sparse Matrix Converter is the restriction of its maximal phase displacement between input voltage and input current which is restricted to ± 30°.
caption: Fig 3: Topology of the ultra-sparse matrix.
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