公开(公告)号：US4336585A

公开(公告)日：1982-06-22

申请号：US219773

申请日：1980-12-23

申请人： Robert M. Moriarty ,  John W. Walton ,  Samuel C. Caldwell

发明人： Robert M. Moriarty ,  John W. Walton ,  Samuel C. Caldwell

IPC分类号： H02M7/527 ,  H02P13/00

CPC分类号： H02M7/527 ,  H02M2007/4811

摘要： A selective commutation technique used with an inverter eliminates one of the two commutation pulses at those points at which there is a particular relationship of inverter operating characteristics. The power factor angle .theta., the voltage phase angle .delta., and the voltage pattern notch angle .beta. are sensed to determine this particular relationship. Because at the switching point there is no current flowing through the gated thyristor, the gated thyristor can then be transitioned to the nonconducting state merely by the removal of its gate signal. A single makeup pulse is then rung through the system to initialize the commutation capacitors for the next switch point.

摘要翻译： 与逆变器一起使用的选择性换向技术在那些具有逆变器工作特性的特定关系的点消除了两个换向脉冲之一。 感测功率因数角度θ，电压相位角度Δ和电压模式切口角度β以确定该特定关系。 因为在开关点没有电流流过门控晶闸管，所以门控晶闸管可以仅通过去除其栅极信号而转变到非导通状态。 然后，单个补充脉冲通过系统梯级，以初始化下一个切换点的换向电容器。