Control method for autonomous changing the number of DC-DC converters to improve efficiency

In this paper, a control method for autonomous changing the number of parallel driven DC-DC converter is proposed. In order to improve efficiency of the parallel driving, the number of parallel driven converters is dynamically changed for the variations of the load current. The changing point of the load current is determined as a function by the number of parallel driven converters and the parameters of the converter. The calculated changing points are usable in practical use with the experimental power loss of the converters.