Patent ID: 8295068
Filing Date: 2012-10-23
Classification: H02M,Y02B

Abstract:
1. A phase shift full bridge power converting system, comprising: a power converter interfacing with a load state detecting module, a second switch element and a comparator for converting an input voltage into an output voltage; the load state detecting module interfacing with the power converter and a switching controller, the load state detecting module converting a parameter outputted by the power converter into load parameter data and outputting the load parameter data to the switching controller; the switching controller interfacing with the load state detecting module, a first switch element and a second switch element, the switching controller determining a load state according to the load parameter data and controlling the first switch element and the second switch element; a switch module comprising the first switch element and the second switch element; a command generating module interfacing with the first switch element and generating a voltage command; a comparator interfacing with the power converter, the first switch element and the controller, the comparator comparing the output voltage of the power converter and a reference voltage outputted by the command generating module to obtain an error value; a controller interfacing with the comparator and the modulator module, the controller calculating a duty cycle parameter according to the error value outputted by the comparator; and a comparator modulator module interfacing with the controller and the second switch element, the comparator modulator module generating a modulating signal and inputting the modulating signal to the power converter for controlling the driving of the power converter.