| 摘要 |
A switching power supply transmits power between a single front end including electromagnetic interference filtering and power factor correction circuits to an output end at a high voltage and high frequency from which any desired DC voltage or waveform may be readily and directly derived with high efficiency in order to reduce size and weight of components including transformers at the output end and allow greater variety of connection wiring of reduced weight and volume to be used. The high frequency is limited at the low frequency end by the frequency at which significant power can be transferred through, for example, a ferrite core or other transformer of sufficiently low volume to accommodate closely spaced loads or power converters and at the high frequency end by the wavelength in the connection wiring such that 1/10 wavelength is greater than one thousand feet. Branches of the power distribution system which are not desired to be in use can be operated at zero power and be brought back on line within milliseconds, when needed. Power distribution among respective branches of the power distribution system can be controlled by varying the high frequency of power transmission and appropriate filtering.
|
