公开(公告)号：EP2561606B1

公开(公告)日：2018-12-05

申请号：EP10726607.4

申请日：2010-04-19

Applicant: ABB Schweiz AG

Inventor： MARTINI, David ,  VALIANI, Massimo ,  SOLDANI, Simone

IPC: H02M7/487

CPC classification number: H02M7/483 ,  H02M3/158 ,  H02M7/487 ,  H02M7/49 ,  H02M2001/007

Abstract: The multi-level DC/AC converter, comprising: an input (5,7) connectable to a direct voltage source (3), with a first connection (5) and a second connection (7) between which can be applied an input voltage (Vi); a half-bridge with a first controlled switch (21) and a second controlled switch (25) between which is positioned an output (U) of the converter; a first connecting branch (15) between the first controlled switch (21) and the first connection (5) and a second connecting branch (17) between the second controlled switch (25) and the second connection (7); a third controlled switch (59) associated to the first controlled switch (21), connectable in series to the first controlled switch to generate an output voltage exceeding a first limit value (Vi/2); a fourth controlled switch (61) associated to the second controlled switch (25), connectable in series to said second controlled switch to generate an output voltage below a second limit value (−Vi/2).

公开(公告)号：EP2668747B1

公开(公告)日：2018-09-12

申请号：EP11709501.8

申请日：2011-01-25

Applicant: ABB Schweiz AG

Inventor： VALIANI, Massimo ,  TAZZARI, Davide ,  VERNIA, Filippo

IPC: H04L12/403

CPC classification number: H04L7/00 ,  H04L12/403 ,  H04L12/4135 ,  H04L25/4902

Abstract: A method is described for the transmission of data among devices (D1, D2, . . . Di, . . . Dn) connected to a communication channel (1) through sequences containing at least two symbols, one dominant (“0”) and one recessive (“1”). According to this transmission method, one (DTSG) of the devices connected to the communication channel (1) has the function of time slot generator and it transmits on the communication channel (1) with a transmission frequency (f) a sequence of symbols, each defining a time slot in a sequence of time slots. The sequence of symbols comprises at least a series of recessive symbols (“1”). When one of the devices (Di) has to transmit on the communication channel (1), it generates a sequence of symbols, synchronized with the sequence of time slots generated by the time slot generator device (DTSG) and comprising at least one dominant symbol (“0”).