| 摘要 |
A load balancer is to be used in a power supplying system which includes at least two power supplying units that are connected in parallel to supply power concurrently to operate an electrical load. The load balancer includes at least two sensors, each of which is adapted to generate an ac sensor output corresponding to power output of a respective one of the power supplying units. Each of at least two rectifying and filtering circuits rectifies and filters the ac sensor output of a respective one of the sensors so as to obtain a corresponding dc sensor output. A microprocessor receives the dc sensor outputs from the rectifying and filtering circuits, and calculates an average input value therefrom that corresponds to a balanced power output for the power supplying units. The microprocessor compares each of the dc sensor outputs with the average input value, and when one of the dc sensor outputs is larger than the average input value, indicating a condition in that the power output of one of the power supplying units is higher than the balanced power output, the microprocessor generates a load adjustment signal to control the power supplying unit with the higher power output so as to decrease its power output to the balanced power output.
|
