Method for controlling matrix converter
A method for controlling a matrix converter with nine bidirectional power switches arranged in a 3x3 switch matrix is described. Switching states of a modulation period are each calculated with associated time intervals by using a space vector modulation method. According to the invention, these cal...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A method for controlling a matrix converter with nine bidirectional power switches arranged in a 3x3 switch matrix is described. Switching states of a modulation period are each calculated with associated time intervals by using a space vector modulation method. According to the invention, these calculated switching states are each divided into switching states of an output phase of the matrix converter, with time intervals assigned to the switching states, wherein the time intervals and the output-phase-related switching states are placed into one-to-one correspondence. Depending on the measured input voltages, the output-phase-related switching states with associated time intervals are combined into a pulse train of a modulation period, so that a sequential commutation always occurs to a nearest input voltage. This significantly reduces the switching losses of a matrix converter. |
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