公开(公告)号：EP1177612A1

公开(公告)日：2002-02-06

申请号：EP00916236.3

申请日：2000-03-10

申请人： NMB (USA), Inc.

发明人： JANSEN, Arian

IPC分类号： H02M3/28 ,  H02M3/335 ,  H02M7/00

CPC分类号： H02J1/102

摘要： A system (30) and a method may use variable-frequency power sources for supplying power to a load (36). The system and method use phase detection in order to automatically and substantially equalize the currents supplied to a load by each of the variable-frequency power sources, and to cancel a ripple component of the input current drawn by the system. First and second power sources (31, 32) supply power to the load. The power sources have a similar relationship between their respective variable switching frequencies of, respectively, the first and second power sources are locked to one another using phase detection to substantially equalize the power supplied to the load by each power source. The system and method are advantageously utilized to provide a power factor correction front-end for a switch-mode power supply. Power sources with non-linear and/or inverse relationships between power supplied and switching frequency can be used. In alternate embodiments power from series power sources is equalized by equalizing voltages supplied by each power source to a load.

摘要翻译： 系统（30）和方法可以使用变频电源向负载（36）供电。 该系统和方法使用相位检测，以便自动且基本均衡由每个变频电源提供给负载的电流，并且消除由系统汲取的输入电流的纹波分量。 第一和第二电源（31,32）向负载供电。 电源在它们各自的可变开关频率之间具有类似的关系，第一和第二电源分别利用相位检测彼此锁定，以基本均衡由每个电源提供给负载的电力。 该系统和方法有利地用于为开关模式电源提供功率因数校正前端。 可以使用在供电和开关频率之间具有非线性和/或反相关系的电源。 在替代实施例中，通过均衡由每个电源向负载供应的电压来均衡来自串联电源的电力。