| 主权项 |
1. A distributed load current sensing system connected to a power input terminal that is connected to a main power trunk, said main power trunk having connected thereto at least one load branch, the distributed load current sensing system comprising:
a power bus electrically connected to said main power trunk; an active power filter electrically connected to said power bus, said active power filter comprising:
a signal processor unit adapted to analyze each received signal and output a corresponding signal;a driving circuit unit electrically connected to said signal processor unit for receiving the output signal of said signal processor unit and outputting a corresponding driving signal;a power unit electrically connected to said driving circuit unit for receiving said driving signal and generating a corresponding compensation signal; anda load current sensor device electrically connected to said load branch, said load current sensor device comprising a control unit and a load current sensing unit, said control unit being electrically coupled with said load current sensing unit, said load current sensing unit being adapted for sensing the load current of each said load branch and transmitting each sensed signal to said control unit and then said active power filter; said active power filter being adapted for generating a compensation signal same as the harmonic signal and amplitude of each respective said load branch in a reversed phase for transmission through said power bus and said main power trunk to each respective said load branch to compensate the harmonic signal and virtual work of each respective said load branch. |
