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This paper gives an overview to voltage-controlled matrix converter commutation. Conventional converter systems with explicit sign measurement circuits that were necessary for the commutation in the past are discussed. New operation methods eliminating these extra measuring circuits are presented. The paper explains the new methods. Advantages and disadvantages of different approaches are discussed. The robustness of the new methods against disturbance is proved and measurements on a 5.5-kW matrix converter system are shown.

In this paper the design and testing of a new protection strategy for a matrix converter feeding an induction motor is described. The new protection strategy with excellent over-voltage protection allows to remove the large and expensive diode clamp.

In this paper, the design and testing of a new protection strategy for a matrix converter feeding an induction motor with a squirrel cage rotor is described. The new protection strategy with excellent overvoltage protection allows the removal of the large and expensive diode clamp.

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