Method, control device and Flying Capacitor converter in discontinuous conduction mode

Abstract

The invention relates to a method for controlling a floating-capacitor multilevel converter, the method comprising the following steps: - Determining a primary control signal (G1P) corresponding to the control signal in continuous conduction mode of the converter for at least one controlled switch of the converter; - Determining a secondary control signal (G1CDM) such that its value changes in relation to the zero crossing of the current in the at least one controlled switch; - Combining the primary control signal (G1P) and the secondary control signal (G1CDM) to obtain a composite control signal (G1C); - Controlling the at least one controlled switch based on the composite control signal (G1C). The invention also relates to a control device for a converter and a converter. Figure 9

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