专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2022268593A1 A PULSE WIDTH MODULATION SYSTEM AND A METHOD IN RELATION THERETO 审中-公开
公开(公告)号：WO2022268593A1
公开(公告)日：2022-12-29
申请号：PCT/EP2022/066257
申请日：2022-06-15
申请人： BOMBARDIER TRANSPORTATION GMBH
发明人： BOHLIN, Henrik , CHRISTENSSON, Åke , LODESTEN, Lucas , TROSTÉN, Torbjörn
IPC分类号： H02M1/08 , G06F1/04 , H02M7/537 , H02M1/0043 , H02M1/36 , H02M7/5387
摘要： A pulse width modulation system (2) comprising a plurality of module building blocks (41-44), where each building block is connected to and controlled by a control board (61- 64), each module building block comprises a set of function modules (81-85), provided with pulse width modulated phase outputs (101-105) adapted to be connected to predetermined loads, and wherein each module building block (41-44) is connected to a direct current (DC) link, and that the control boards (61-64) are connected to each other via a communication bus (12). One of the control boards is a master control board (61) and the others are slave control boards (62, 63, 64), the master control board (61) comprises a master board timer (141) configured to generate a clock signal having a master timer rate, wherein each of the slave control boards (62, 63, 64) comprises a slave board timer (142, 143, 144). Each slave control board (62, 63, 64) is configured to determine a fictive master board timer based upon timer information received from said master control board (61) via said communication bus (12), and is further configured to synchronize the timer rate of the slave board timer (142, 143, 144) to the master timer rate. The timer information also comprises timer offset information defining a time offset between the master board timer (141) and the slave board timer (142, 143, 144), and the slave control board (62, 63, 64) is configured to apply the time offset in the control of the pulse width modulated phase outputs (101-105), such that the position of a slave pulse width modulated phase output signal is controlled in relation to the fictive master board timer.

IPRDB

热门服务

关于我们

友情链接

联系方式