Implementation of a current share method for paralleling of DC/DC converter without control interconnection

A current share method for paralleling of DC/DC converter with no interconnection is introduced in this paper. This technique uses an AC signal on the output line to realize current share control. It has some merits that other current share methods don´t have and is suitable for current share control with great number of module parallel converter system. The parallel converter system using this current share control method is presented, and the basic principle of this current share control method with no control interconnection and the implementation of this method are analyzed in detail. Practical implementation of this method is addressed. The experimental results based on a three-module prototype system show the validity of this approach.