Method and an apparatus for controlling the output voltage of a boost converter composed of plural bridge devices

摘要

A method and apparatus for controlling the output voltage of a boost converter including a number n of bridge devices connected in series, each bridge device including plural switches and a capacitor. The method and apparatus provide control of the switches according to a selected periodical matrix pattern including a number N of time intervals, N being a positive integer greater than 2, and in that in each time interval, the voltage between the input and the output of each ith bridge device with i from one to n, is equal to one of a null value, a number ki times a positive value, and minus the number ki times the positive value, the positive value being the result of the division of the output voltage of the boost converter including the n bridge devices by the number of time intervals N of the periodical matrix pattern.

主权项

1. Method for controlling the output voltage of a boost converter comprising a number n of bridge devices connected in series, n being a positive integer, each bridge device including plural switches and a capacitor, wherein the method comprises:
selecting a periodical matrix pattern with a plurality of N time intervals, N being a positive integer greater than 2, with a voltage between the input and the output of each ith bridge device, i being a positive integer from 1 to n, being indicated in each time interval as being equal to one of a null value, a predetermined number ki times a positive value, and minus the predetermined number ki times the positive value, with the positive value being the result of the division of an output voltage of the boost converter composed of the n bridge devices by the number of time intervals N of the periodical pattern; and controlling the switches according to the selected periodical matrix pattern.