n -Port -m -Phase -Active -Bridge -converter

摘要

Device (100) for operating an n -port -m phase -active bridge converter (10), k, i *8838; 1, 2,...n a number of freely selectable ports (1,...n(n) is m /1 and n /2, where each port (1,......, n) can be operated as an entry or exit port, each of the ports (1,...n) has a phase branch (16) with several active switches (17, 19), with a phase shift (20) between the phase branches (16) of each port;where the ports can convert a DC voltage (U) into an AC voltage (v) and vice versa, the ports (1) via an m -phase transformer (25) or via separate m transformers (25),which are connected to each of the m phase branches (16) of each of the n ports (1,......,n) in order to achieve a performance between the ports (1,...(n) to be transmitted, where the switches (17, 19) of the phase branch (16) are operated by a control unit (30);to reduce at least one initial DC offset (32) in a magnetisation current (I), the control unit being designed for:- splitting (110) of a switch period T in m intervals (38),if m is a straight number and in 2 *m intervals (38), if m is an odd number, the intervals (38) define interval limits (40) for switching the active switches (17, 19),Pre -tuning (120) of a power to be transferred from the n -Port -m phase -active bridge converter (10) according to a given relative load angle f =f -f between a load angle of a free choiceportable ports i and an absolute load angle of a reference port 1, and switches (130) of the active switches (17, 19) of the n ports (1,...(n) such that each phase branch (16) of a freely selectable port (i) is at the absolute load angle (f) relative to the interval limits (40) of any of the intervals (38);in which the AC voltage (v) of the m phase branch (16) changes its signal, where fis calculated as Udie DC voltage at a freely selectable port k with k `88381, 2, 3,...is, n and kLeak ductivity of port k transformer development is referenced to port i =1 and is no transformer twist ratio between port i =1 and port k and given relativeiv -load angle between port k with k i and port 1.