Multinu00ecveis unidirectional converters of the type elevator based on connection of multiple converters by means of switching cells of multiple states

摘要

Multiniveis unidirectional converters of the type elevator based on connection of multiple converters by means of switching cells of multiple states. Describes electronic converters operating in high frequency and rectifying the voltage of a three-phase electric system or muu00edtifu00e1sico to a DC voltage divided in two equal parts.We use the converter state - of - the - art as basic blocks that are connected through a special arrangement that is able to provide better performance on factors such as the distribution of losses in the semiconductor devices, reduce the amplitude of current in high frequency, red. Uu00e7u00e3o generating electromagnetic emissions conducted common mode and differential mode.Increased frequency of electromagnetic emissions detected by electrical circuits connected to the input and the output of the converter. The arrangement of the connection is carried out with inductors coupled in integer variable of two (2) any whole number.These inductors coupled are connected from one side to a common terminal that is connected to an inducer inlet and on the other side of the switches implemented preferably by controlled power semiconductor devices. The pattern of modulation is also part of this invention, which provides advantages in performance.With this, allowing the converter has an increased efficiency in energy conversion, a reduction of their passive components, such as inductors and capacitors and a reduction in the size of refrigeration systems.