发明名称 |
Control Methods for the Synchronization and Phase Shift of the Pulse Width Modulation (PWM) Strategy of Power Converters |
摘要 |
A method of controlling a plurality of power converters 1a, 1b and 1c can be used to interface to a supply network, ac busbar etc. Each power converter includes a network bridge 14 operating in accordance with a pulse width modulation (PWM) strategy having the same switching period and which causes at least one unwanted harmonic in the supply network voltage. The method includes the step of providing the switching period of the PWM strategy of each network bridge with a different time offset relative to a time datum such that the at least one unwanted harmonic in the supply network voltage is at least partially cancelled. Two alternative ways of providing the time offset are described.
|
申请公布号 |
US2012133211(A1) |
申请公布日期 |
2012.05.31 |
申请号 |
US201213368572 |
申请日期 |
2012.02.08 |
申请人 |
CONVERTEAM TECHNOLOGY LTD |
发明人 |
JONES RODNEY;FULCHER ROBERT VERNON;STIESDAL HENRIK |
分类号 |
H02M1/12 |
主分类号 |
H02M1/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|