High Frequency Switching Intelligent Power Dc Panel Technology

In the power plant and transformer substations, the DC operating power is supplied from high frequency switching DC power supply and uses bulky batteries as an alternative power.With the computer supervision control technology, the high frequency switching DC power supply is actualized auto control and has the abilities such as the telecontrol, the telemetering, the remote regulating and the remote signaling. To meet the high power requirement and to achieve reliability and efficiency, the use of paralleled connected power modules becomes necessary. The current-sharing between modules is the key technology. Because of the batteries' charging and discharging, the output voltage of the charger must be regulated constantly before used by the other equipment.This paper contains some correlative technologies of the high frequency intelligent DC power supply:1. Introduce the designing and realizing of the intelligent control system.2. Research the single wire average current sharing technology used in paralleling DC/DC converters.3. Research the Zeta converter which can step up or step down the input DC voltage without changing its polarity.